BGP Routing: 2011-04-17

The Border Gateway Protocol (BGP) is the protocol backing the core routing decisions on the Internet. It maintains a table of IP networks or 'prefixes' which designate network reachability among autonomous systems (AS). It is described as a path vector protocol. BGP does not use traditional Interior Gateway Protocol (IGP) metrics, but makes routing decisions based on path, network policies and/or rulesets. For this reason, it is more appropriately termed a reachability protocol rather than routing protocol.

Saturday, April 23, 2011

[bgp-stats] Routing Table Report - RouteViews-3 view

* BGP Routing Table Analysis Reports *
Routing Table Report 00:00 GMT Sun 24 Apr, 2011

NB: RouteViews data includes iBGP information from some ASNs.
Treat the information provided below appropriately.

Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/rviews/

Analysis Summary
----------------

BGP routing table entries examined: 360123
Prefixes after maximum aggregation: 162118
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 175268
Total ASes present in the Internet Routing Table: 37423
Prefixes per ASN: 9.62
Origin-only ASes present in the Internet Routing Table: 31366
Origin ASes announcing only one prefix: 15041
Transit ASes present in the Internet Routing Table: 5039
Transit-only ASes present in the Internet Routing Table: 127
Average AS path length visible in the Internet Routing Table: 5.1
Max AS path length visible: 33
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 2947
Unregistered ASNs in the Routing Table: 297
Number of 32-bit ASNs allocated by the RIRs: 1311
Number of 32-bit ASNs visible in the Routing Table: 1018
Prefixes from 32-bit ASNs in the Routing Table: 2273
Special use prefixes present in the Routing Table: 76
Prefixes being announced from unallocated address space: 157
Number of addresses announced to Internet: 2418692217
Equivalent to 144 /8s, 42 /16s and 80 /24s
Percentage of available address space announced: 65.3
Percentage of allocated address space announced: 65.3
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.5
Total number of prefixes smaller than registry allocations: 149388

APNIC Region Analysis Summary
-----------------------------

Prefixes being announced by APNIC Region ASes: 86775
Total APNIC prefixes after maximum aggregation: 28820
APNIC Deaggregation factor: 3.01
Prefixes being announced from the APNIC address blocks: 83371
Unique aggregates announced from the APNIC address blocks: 36878
APNIC Region origin ASes present in the Internet Routing Table: 4404
APNIC Prefixes per ASN: 18.93
APNIC Region origin ASes announcing only one prefix: 1238
APNIC Region transit ASes present in the Internet Routing Table: 693
Average APNIC Region AS path length visible: 5.7
Max APNIC Region AS path length visible: 24
Number of APNIC region 32-bit ASNs visible in the Routing Table: 48
Number of APNIC addresses announced to Internet: 610726337
Equivalent to 36 /8s, 102 /16s and 241 /24s
Percentage of available APNIC address space announced: 77.5

APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079
55296-56319, 131072-132095
APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8,
49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8,
106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
123/8, 124/8, 125/8, 126/8, 133/8, 175/8, 180/8,
182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8,
219/8, 220/8, 221/8, 222/8, 223/8,

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes: 143047
Total ARIN prefixes after maximum aggregation: 73223
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 115146
Unique aggregates announced from the ARIN address blocks: 45155
ARIN Region origin ASes present in the Internet Routing Table: 14362
ARIN Prefixes per ASN: 8.02
ARIN Region origin ASes announcing only one prefix: 5470
ARIN Region transit ASes present in the Internet Routing Table: 1489
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 27
Number of ARIN region 32-bit ASNs visible in the Routing Table: 11
Number of ARIN addresses announced to Internet: 798943768
Equivalent to 47 /8s, 158 /16s and 234 /24s
Percentage of available ARIN address space announced: 63.5

ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153
3354-4607, 4865-5119, 5632-6655, 6912-7466
7723-8191, 10240-12287, 13312-15359, 16384-17407
18432-20479, 21504-23551, 25600-26591,
26624-27647, 29696-30719, 31744-33791
35840-36863, 39936-40959, 46080-47103
53248-55295, 393216-394239
ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8,
12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8,
20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8,
29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8,
40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8,
53/8, 54/8, 55/8, 56/8, 57/8, 63/8, 64/8,
65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8,
72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8,
98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 173/8,
174/8, 184/8, 199/8, 204/8, 205/8, 206/8, 207/8,
208/8, 209/8, 214/8, 215/8, 216/8,

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes: 87276
Total RIPE prefixes after maximum aggregation: 48173
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 79625
Unique aggregates announced from the RIPE address blocks: 50737
RIPE Region origin ASes present in the Internet Routing Table: 15570
RIPE Prefixes per ASN: 5.11
RIPE Region origin ASes announcing only one prefix: 7768
RIPE Region transit ASes present in the Internet Routing Table: 2437
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 30
Number of RIPE region 32-bit ASNs visible in the Routing Table: 756
Number of RIPE addresses announced to Internet: 467124604
Equivalent to 27 /8s, 215 /16s and 193 /24s
Percentage of available RIPE address space announced: 75.3

RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631
6656-6911, 8192-9215, 12288-13311, 15360-16383
20480-21503, 24576-25599, 28672-29695
30720-31743, 33792-35839, 38912-39935
40960-45055, 47104-52223, 56320-58367
196608-198655
RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8,
62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8,
83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8,
90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8,
176/8, 178/8, 185/8, 193/8, 194/8, 195/8, 212/8,
213/8, 217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes: 32697
Total LACNIC prefixes after maximum aggregation: 7486
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31677
Unique aggregates announced from the LACNIC address blocks: 16485
LACNIC Region origin ASes present in the Internet Routing Table: 1443
LACNIC Prefixes per ASN: 21.95
LACNIC Region origin ASes announcing only one prefix: 431
LACNIC Region transit ASes present in the Internet Routing Table: 262
Average LACNIC Region AS path length visible: 5.3
Max LACNIC Region AS path length visible: 29
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 198
Number of LACNIC addresses announced to Internet: 82688652
Equivalent to 4 /8s, 237 /16s and 186 /24s
Percentage of available LACNIC address space announced: 54.8

LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
262144-263167 plus ERX transfers
LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
200/8, 201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes: 7751
Total AfriNIC prefixes after maximum aggregation: 1843
AfriNIC Deaggregation factor: 4.21
Prefixes being announced from the AfriNIC address blocks: 6117
Unique aggregates announced from the AfriNIC address blocks: 1897
AfriNIC Region origin ASes present in the Internet Routing Table: 446
AfriNIC Prefixes per ASN: 13.72
AfriNIC Region origin ASes announcing only one prefix: 134
AfriNIC Region transit ASes present in the Internet Routing Table: 97
Average AfriNIC Region AS path length visible: 4.9
Max AfriNIC Region AS path length visible: 33
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23357952
Equivalent to 1 /8s, 100 /16s and 106 /24s
Percentage of available AfriNIC address space announced: 34.8

AfriNIC AS Blocks 36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks 41/8, 102/8, 105/8, 197/8,

APNIC Region per AS prefix count summary
----------------------------------------

ASN No of nets /20 equiv MaxAgg Description
4766 1868 9474 600 Korea Telecom (KIX)
17974 1815 515 29 PT TELEKOMUNIKASI INDONESIA
4755 1450 374 164 Videsh Sanchar Nigam Ltd. Aut
7545 1439 300 80 TPG Internet Pty Ltd
7552 1195 1064 7 Vietel Corporation
24560 1140 323 204 Bharti Airtel Ltd.
9583 1056 77 494 Sify Limited
9829 1008 870 50 BSNL National Internet Backbo
17488 957 164 98 Hathway IP Over Cable Interne
18101 932 116 137 Reliance Infocom Ltd Internet

Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-APNIC

ARIN Region per AS prefix count summary
---------------------------------------

ASN No of nets /20 equiv MaxAgg Description
6389 3650 3822 255 bellsouth.net, inc.
4323 2647 1090 398 Time Warner Telecom
1785 1789 681 128 AppliedTheory Corporation
18566 1760 349 229 Covad Communications
6478 1641 309 46 AT&T Worldnet Services
20115 1585 1556 638 Charter Communications
19262 1494 4933 297 Verizon Global Networks
7018 1362 6801 891 AT&T WorldNet Services
22773 1299 2865 84 Cox Communications, Inc.
2386 1267 536 911 AT&T Data Communications Serv

Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-ARIN

RIPE Region per AS prefix count summary
---------------------------------------

ASN No of nets /20 equiv MaxAgg Description
286 1021 798 175 KPNQwest Backbone AS
9116 542 326 30 Goldenlines main autonomous s
6830 519 1780 320 UPC Distribution Services
3292 509 1997 392 TDC Tele Danmark
34984 508 106 182 Tellcom Iletisim Hizmetleri
29049 450 33 48 AzerSat LLC.
8866 447 134 26 Bulgarian Telecommunication C
20940 444 130 338 Akamai Technologies European
3320 423 7609 368 Deutsche Telekom AG
8551 407 356 39 Bezeq International

Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-RIPE

LACNIC Region per AS prefix count summary
-----------------------------------------

ASN No of nets /20 equiv MaxAgg Description
10620 1437 268 160 TVCABLE BOGOTA
8151 1352 2688 370 Uninet S.A. de C.V.
28573 1279 988 87 Types of queries are: POCs, o
7303 927 467 149 Telecom Argentina Stet-France
6503 907 354 72 AVANTEL, S.A.
14420 663 53 91 Types of queries are: POCs, o
22047 565 310 15 Types of queries are: POCs, o
3816 516 225 98 COLOMBIA TELECOMUNICACIONES S
11172 489 100 83 Alestra
27947 488 53 52 Telconet S.A

Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-LACNIC

AfriNIC Region per AS prefix count summary
------------------------------------------

ASN No of nets /20 equiv MaxAgg Description
8452 866 445 11 TEDATA
24863 778 147 39 LINKdotNET AS number
15475 423 90 8 Nile Online
36992 296 415 13 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 238 215 13 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
24835 215 78 10 RAYA Telecom - Egypt
29571 161 17 11 Ci Telecom Autonomous system
16637 150 441 86 Johnnic e-Ventures

Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-AFRINIC

Global Per AS prefix count summary
----------------------------------

ASN No of nets /20 equiv MaxAgg Description
6389 3650 3822 255 bellsouth.net, inc.
4323 2647 1090 398 Time Warner Telecom
23456 2273 654 1238 >>UNKNOWN<<
4766 1868 9474 600 Korea Telecom (KIX)
17974 1815 515 29 PT TELEKOMUNIKASI INDONESIA
1785 1789 681 128 AppliedTheory Corporation
18566 1760 349 229 Covad Communications
6478 1641 309 46 AT&T Worldnet Services
20115 1585 1556 638 Charter Communications
19262 1494 4933 297 Verizon Global Networks

Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet

Global Per AS Maximum Aggr summary
----------------------------------

ASN No of nets Net Savings Description
4323 2647 2249 Time Warner Telecom
17974 1815 1786 PT TELEKOMUNIKASI INDONESIA
1785 1789 1661 AppliedTheory Corporation
6478 1641 1595 AT&T Worldnet Services
18566 1760 1531 Covad Communications
7545 1439 1359 TPG Internet Pty Ltd
4755 1450 1286 Videsh Sanchar Nigam Ltd. Aut
10620 1437 1277 TVCABLE BOGOTA
4766 1868 1268 Korea Telecom (KIX)
11492 1256 1241 Cable One

Complete listing at http://thyme.rand.apnic.net/rviews/data-CIDRnet

List of Unregistered Origin ASNs (Global)
-----------------------------------------

Bad AS Designation Network Transit AS Description
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.14.170.0/24 4323 Time Warner Telecom
13746 UNALLOCATED 12.24.56.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.25.107.0/24 4323 Time Warner Telecom
26973 UNALLOCATED 12.39.152.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.154.0/23 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.155.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.159.0/24 7018 AT&T WorldNet Servic
25639 UNALLOCATED 12.41.169.0/24 7018 AT&T WorldNet Servic
13317 UNALLOCATED 12.44.10.0/24 7018 AT&T WorldNet Servic

Complete listing at http://thyme.rand.apnic.net/rviews/data-badAS

Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------

Prefix Origin AS Description
10.29.244.56/29 286 KPNQwest Backbone AS
10.29.245.1/32 286 KPNQwest Backbone AS
10.29.245.2/32 286 KPNQwest Backbone AS
10.29.245.15/32 286 KPNQwest Backbone AS
10.29.245.19/32 286 KPNQwest Backbone AS
10.29.245.20/32 286 KPNQwest Backbone AS
10.29.245.21/32 286 KPNQwest Backbone AS
10.29.245.22/32 286 KPNQwest Backbone AS
10.29.245.25/32 286 KPNQwest Backbone AS
10.29.245.26/32 286 KPNQwest Backbone AS

Complete listing at http://thyme.rand.apnic.net/rviews/data-dsua

Advertised Unallocated Addresses
--------------------------------

Network Origin AS Description
24.225.128.0/18 36377 Comcast Telecommunications, I
24.225.192.0/23 36377 Comcast Telecommunications, I
24.225.192.0/18 36377 Comcast Telecommunications, I
24.225.224.0/21 36377 Comcast Telecommunications, I
24.225.237.0/24 36377 Comcast Telecommunications, I
24.225.248.0/21 36377 Comcast Telecommunications, I
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
45.127.0.0/16 13767 NetworkTwo Communications Gro
62.61.220.0/24 24974 Tachyon Europe BV - Wireless

Complete listing at http://thyme.rand.apnic.net/rviews/data-add-IANA

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:20 /9:12 /10:28 /11:78 /12:221
/13:458 /14:792 /15:1407 /16:11780 /17:5989 /18:9910
/19:19686 /20:26289 /21:26024 /22:34176 /23:33150 /24:187454
/25:369 /26:356 /27:164 /28:267 /29:182 /30:617
/31:61 /32:633

Advertised prefixes smaller than registry allocations
-----------------------------------------------------

ASN No of nets Total ann. Description
6389 2251 3650 bellsouth.net, inc.
18566 1728 1760 Covad Communications
6478 1595 1641 AT&T Worldnet Services
4323 1344 2647 Time Warner Telecom
10620 1327 1437 TVCABLE BOGOTA
11492 1205 1256 Cable One
23456 1145 2273 >>UNKNOWN<<
7011 1062 1161 Citizens Utilities
1785 1059 1789 AppliedTheory Corporation
286 881 1021 KPNQwest Backbone AS

Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos

Number of /24s announced per /8 block (Global)
----------------------------------------------

1:262 2:63 4:18 5:1 6:3 8:349
12:2012 13:1 14:440 15:15 16:3 17:8
20:9 23:5 24:1623 27:725 31:210 32:126
33:3 34:2 37:1 38:766 40:101 41:2434
42:3 44:3 46:870 47:4 49:177 50:366
52:13 55:3 56:2 57:40 58:848 59:480
60:356 61:1271 62:1001 63:1934 64:3960 65:2327
66:4379 67:1879 68:1257 69:3082 70:744 71:349
72:1935 73:3 74:2411 75:311 76:344 77:884
78:683 79:471 80:1108 81:837 82:516 83:471
84:667 85:1093 86:613 87:764 88:338 89:1631
90:183 91:3712 92:518 93:1070 94:1290 95:800
96:466 97:251 98:829 99:35 101:64 103:5
106:1 107:5 108:84 109:943 110:557 111:696
112:325 113:392 114:526 115:685 116:965 117:676
118:805 119:1140 120:301 121:676 122:1628 123:1071
124:1251 125:1272 128:266 129:163 130:172 131:551
132:113 133:19 134:219 135:49 136:214 137:143
138:302 139:118 140:486 141:174 142:401 143:399
144:485 145:52 146:442 147:218 148:578 149:233
150:171 151:187 152:307 153:179 154:3 155:392
156:191 157:354 158:132 159:384 160:316 161:243
162:277 163:165 164:489 165:367 166:511 167:426
168:719 169:153 170:782 171:77 172:1 173:1529
174:534 175:360 177:73 178:868 180:822 181:9
182:433 183:205 184:334 185:1 186:1140 187:805
188:991 189:1004 190:4849 192:5829 193:4848 194:3521
195:3110 196:1196 197:16 198:3577 199:3931 200:5542
201:1504 202:8360 203:8439 204:4141 205:2338 206:2759
207:3030 208:3993 209:3519 210:2736 211:1384 212:2030
213:1760 214:738 215:67 216:4899 217:1669 218:566
219:375 220:1198 221:485 222:341 223:143

End of report
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[bgp-stats] Routing Table Report - London view

* BGP Routing Table Analysis Reports *
Routing Table Report 08:00 +10GMT Sun 24 Apr, 2011

Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/london/

Analysis Summary
----------------

BGP routing table entries examined: 350369
Prefixes after maximum aggregation: 158891
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 175351
Total ASes present in the Internet Routing Table: 36197
Prefixes per ASN: 9.68
Origin-only ASes present in the Internet Routing Table: 31299
Origin ASes announcing only one prefix: 15065
Transit ASes present in the Internet Routing Table: 4898
Transit-only ASes present in the Internet Routing Table: 113
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 27
Max AS path prepend of ASN (50912) 25
Prefixes from unregistered ASNs in the Routing Table: 1982
Unregistered ASNs in the Routing Table: 380
Number of 32-bit ASNs allocated by the RIRs: 1311
Number of 32-bit ASNs visible in the Routing Table: 0
Prefixes from 32-bit ASNs in the Routing Table: 2252
Special use prefixes present in the Routing Table: 6
Prefixes being announced from unallocated address space: 148
Number of addresses announced to Internet: 2434862848
Equivalent to 145 /8s, 33 /16s and 15 /24s
Percentage of available address space announced: 65.7
Percentage of allocated address space announced: 65.7
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.5
Total number of prefixes smaller than registry allocations: 144096

APNIC Region Analysis Summary
-----------------------------

Prefixes being announced by APNIC Region ASes: 84477
Total APNIC prefixes after maximum aggregation: 28563
APNIC Deaggregation factor: 2.96
Prefixes being announced from the APNIC address blocks: 81828
Unique aggregates announced from the APNIC address blocks: 36774
APNIC Region origin ASes present in the Internet Routing Table: 4362
APNIC Prefixes per ASN: 18.76
APNIC Region origin ASes announcing only one prefix: 1232
APNIC Region transit ASes present in the Internet Routing Table: 664
Average APNIC Region AS path length visible: 4.1
Max APNIC Region AS path length visible: 22
Number of APNIC region 32-bit ASNs visible in the Routing Table: 0
Number of APNIC addresses announced to Internet: 609732864
Equivalent to 36 /8s, 87 /16s and 201 /24s
Percentage of available APNIC address space announced: 77.3

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes: 138789
Total ARIN prefixes after maximum aggregation: 70731
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 111489
Unique aggregates announced from the ARIN address blocks: 45222
ARIN Region origin ASes present in the Internet Routing Table: 14258
ARIN Prefixes per ASN: 7.82
ARIN Region origin ASes announcing only one prefix: 5456
ARIN Region transit ASes present in the Internet Routing Table: 1413
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 22
Number of ARIN region 32-bit ASNs visible in the Routing Table: 0
Number of ARIN addresses announced to Internet: 798857984
Equivalent to 47 /8s, 157 /16s and 155 /24s
Percentage of available ARIN address space announced: 63.5

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes: 84294
Total RIPE prefixes after maximum aggregation: 47863
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 77447
Unique aggregates announced from the RIPE address blocks: 51027
RIPE Region origin ASes present in the Internet Routing Table: 15538
RIPE Prefixes per ASN: 4.98
RIPE Region origin ASes announcing only one prefix: 7807
RIPE Region transit ASes present in the Internet Routing Table: 2412
Average RIPE Region AS path length visible: 3.6
Max RIPE Region AS path length visible: 27
Number of RIPE region 32-bit ASNs visible in the Routing Table: 0
Number of RIPE addresses announced to Internet: 466792960
Equivalent to 27 /8s, 210 /16s and 178 /24s
Percentage of available RIPE address space announced: 75.2

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes: 32102
Total LACNIC prefixes after maximum aggregation: 7333
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 31255
Unique aggregates announced from the LACNIC address blocks: 16475
LACNIC Region origin ASes present in the Internet Routing Table: 1428
LACNIC Prefixes per ASN: 21.89
LACNIC Region origin ASes announcing only one prefix: 436
LACNIC Region transit ASes present in the Internet Routing Table: 249
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 0
Number of LACNIC addresses announced to Internet: 82635264
Equivalent to 4 /8s, 236 /16s and 234 /24s
Percentage of available LACNIC address space announced: 54.7

LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
262144-263167 plus ERX transfers
LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
200/8, 201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes: 7735
Total AfriNIC prefixes after maximum aggregation: 1840
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 6103
Unique aggregates announced from the AfriNIC address blocks: 1893
AfriNIC Region origin ASes present in the Internet Routing Table: 445
AfriNIC Prefixes per ASN: 13.71
AfriNIC Region origin ASes announcing only one prefix: 134
AfriNIC Region transit ASes present in the Internet Routing Table: 97
Average AfriNIC Region AS path length visible: 3.4
Max AfriNIC Region AS path length visible: 17
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 0
Number of AfriNIC addresses announced to Internet: 23312896
Equivalent to 1 /8s, 99 /16s and 186 /24s
Percentage of available AfriNIC address space announced: 34.7

AfriNIC AS Blocks 36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks 41/8, 102/8, 105/8, 197/8,

APNIC Region per AS prefix count summary
----------------------------------------

ASN No of nets /20 equiv MaxAgg Description
4766 1868 9474 600 Korea Telecom (KIX)
17974 1470 470 33 PT Telekomunikasi Indonesia
4755 1452 634 166 TATA Communications formerly
7545 1437 300 78 TPG Internet Pty Ltd
7552 1195 1064 7 Vietel Corporation
24560 1108 310 203 Bharti Airtel Ltd., Telemedia
9583 1056 78 494 Sify Limited
9829 1008 870 50 National Internet Backbone
4808 944 2019 276 CNCGROUP IP network China169
17488 940 164 98 Hathway IP Over Cable Interne

Complete listing at http://thyme.rand.apnic.net/london/data-ASnet-APNIC

ARIN Region per AS prefix count summary
---------------------------------------

ASN No of nets /20 equiv MaxAgg Description
6389 3651 3822 256 BellSouth.net Inc.
4323 2647 1106 399 tw telecom holdings, inc.
1785 1792 681 128 PaeTec Communications, Inc.
18566 1707 338 239 Covad Communications Co.
6478 1641 309 46 AT&T Services, Inc.
20115 1535 1552 638 Charter Communications
19262 1494 4949 297 Verizon Online LLC
7018 1370 6962 898 AT&T Services, Inc.
22773 1298 2865 84 Cox Communications Inc.
2386 1269 536 911 AT&T Data Communications Serv

Complete listing at http://thyme.rand.apnic.net/london/data-ASnet-ARIN

RIPE Region per AS prefix count summary
---------------------------------------

ASN No of nets /20 equiv MaxAgg Description
9116 541 326 30 Goldenlines main autonomous s
6830 517 1780 320 UPC Broadband
34984 508 106 182 BILISIM TELEKOM
3292 455 1997 391 TDC Data Networks
29049 450 33 48 AzerSat LLC.
8866 446 134 26 Bulgarian Telecommunication C
20940 443 130 338 Akamai Technologies European
3320 422 7609 367 Deutsche Telekom AG
8551 407 356 39 Bezeq International
12479 406 577 6 France Telecom Espana SA

Complete listing at http://thyme.rand.apnic.net/london/data-ASnet-RIPE

LACNIC Region per AS prefix count summary
-----------------------------------------

ASN No of nets /20 equiv MaxAgg Description
10620 1437 268 160 Types of queries are: POCs, o
28573 1261 988 87 Types of queries are: POCs, o
8151 1225 2668 359 Uninet S.A. de C.V.
6503 907 354 73 Axtel, S.A.B. de C.V.
7303 904 466 137 Telecom Argentina S.A.
14420 663 53 91 CORPORACION NACIONAL DE TELEC
22047 565 310 15 Types of queries are: POCs, o
3816 517 225 97 Types of queries are: POCs, o
14117 492 46 43 Telefonica del Sur S.A.
11172 485 99 81 Alestra, S. de R.L. de C.V.

Complete listing at http://thyme.rand.apnic.net/london/data-ASnet-LACNIC

AfriNIC Region per AS prefix count summary
------------------------------------------

ASN No of nets /20 equiv MaxAgg Description
8452 864 445 11 TEDATA
24863 775 147 37 LINKdotNET AS number
15475 430 90 8 Nile Online
36992 297 415 13 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 238 215 13 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
24835 215 78 10 RAYA Telecom - Egypt
29571 161 17 11 Ci Telecom Autonomous system
16637 147 441 86 MTN Network Solutions

Complete listing at http://thyme.rand.apnic.net/london/data-ASnet-AFRINIC

Global Per AS prefix count summary
----------------------------------

ASN No of nets /20 equiv MaxAgg Description
6389 3651 3822 256 BellSouth.net Inc.
4323 2647 1106 399 tw telecom holdings, inc.
23456 2252 654 1232 32-bit ASN transition
4766 1868 9474 600 Korea Telecom (KIX)
1785 1792 681 128 PaeTec Communications, Inc.
18566 1707 338 239 Covad Communications Co.
6478 1641 309 46 AT&T Services, Inc.
20115 1535 1552 638 Charter Communications
19262 1494 4949 297 Verizon Online LLC
17974 1470 470 33 PT Telekomunikasi Indonesia

Complete listing at http://thyme.rand.apnic.net/london/data-ASnet

Global Per AS Maximum Aggr summary
----------------------------------

ASN No of nets Net Savings Description
4323 2647 2248 tw telecom holdings, inc.
1785 1792 1664 PaeTec Communications, Inc.
6478 1641 1595 AT&T Services, Inc.
18566 1707 1468 Covad Communications Co.
17974 1470 1437 PT Telekomunikasi Indonesia
7545 1437 1359 TPG Internet Pty Ltd
4755 1452 1286 TATA Communications formerly
10620 1437 1277 Types of queries are: POCs, o
4766 1868 1268 Korea Telecom (KIX)
11492 1252 1237 CABLE ONE, INC.

Complete listing at http://thyme.rand.apnic.net/london/data-CIDRnet

List of Unregistered Origin ASNs (Global)
-----------------------------------------

Bad AS Designation Network Transit AS Description
65333 PRIVATE 10.0.0.0/8 0 *
32805 UNALLOCATED 12.1.225.0/24 7018 AT&T Services, Inc.
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T Services, Inc.
32567 UNALLOCATED 12.14.170.0/24 7018 AT&T Services, Inc.
16504 UNALLOCATED 12.18.155.0/24 30170 Optic Fusion
13746 UNALLOCATED 12.24.56.0/24 7018 AT&T Services, Inc.
32567 UNALLOCATED 12.25.107.0/24 4323 tw telecom holdings,
30031 UNALLOCATED 12.27.122.0/24 7018 AT&T Services, Inc.
26095 UNALLOCATED 12.34.8.0/24 7018 AT&T Services, Inc.
21861 UNALLOCATED 12.37.59.0/24 7018 AT&T Services, Inc.

Complete listing at http://thyme.rand.apnic.net/london/data-badAS

Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------

Prefix Origin AS Description
10.0.0.0/8 65333 Internet Assigned Numbers Aut
169.254.0.0/16 65333 Internet Assigned Numbers Aut
172.16.0.0/12 65333 Internet Assigned Numbers Aut
192.0.2.0/24 65333 Internet Assigned Numbers Aut
192.168.0.0/16 65535 Internet Assigned Numbers Aut
198.18.0.0/15 65333 Internet Assigned Numbers Aut

Complete listing at http://thyme.rand.apnic.net/london/data-dsua

Advertised Unallocated Addresses
--------------------------------

Network Origin AS Description
24.225.128.0/18 36377 Comcast Telecommunications, I
24.225.192.0/23 36377 Comcast Telecommunications, I
24.225.192.0/18 36377 Comcast Telecommunications, I
24.225.224.0/21 36377 Comcast Telecommunications, I
24.225.237.0/24 36377 Comcast Telecommunications, I
24.225.248.0/21 36377 Comcast Telecommunications, I
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
45.127.0.0/16 13767 DataBank Holdings, Ltd.
62.61.220.0/24 24974 Tachyon Europe BV

Complete listing at http://thyme.rand.apnic.net/london/data-add-IANA

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:21 /9:12 /10:28 /11:77 /12:221
/13:458 /14:785 /15:1379 /16:11635 /17:5733 /18:9542
/19:19259 /20:25622 /21:25501 /22:33529 /23:32258 /24:183837
/25:11 /26:17 /27:23 /28:160 /29:96 /30:51
/31:0 /32:114

Advertised prefixes smaller than registry allocations
-----------------------------------------------------

ASN No of nets Total ann. Description
6389 2251 3651 BellSouth.net Inc.
18566 1681 1707 Covad Communications Co.
6478 1595 1641 AT&T Services, Inc.
4323 1343 2647 tw telecom holdings, inc.
10620 1327 1437 Types of queries are: POCs, o
11492 1201 1252 CABLE ONE, INC.
23456 1131 2252 32-bit ASN transition
7011 1062 1161 Frontier Communications of Am
1785 1059 1792 PaeTec Communications, Inc.
22773 842 1298 Cox Communications Inc.

Complete listing at http://thyme.rand.apnic.net/london/data-sXXas-nos

Number of /24s announced per /8 block (Global)
----------------------------------------------

1:260 2:43 4:14 5:1 6:3 8:348
12:2002 13:1 14:426 15:15 16:3 17:8
20:9 23:5 24:1604 27:720 31:210 32:55
33:3 34:2 37:1 38:761 40:101 41:2431
42:3 44:3 46:865 47:4 49:177 50:366
52:13 55:3 56:2 57:29 58:796 59:468
60:354 61:1090 62:985 63:1916 64:3907 65:2315
66:4343 67:1855 68:1080 69:2975 70:698 71:344
72:1904 73:1 74:2349 75:297 76:336 77:844
78:675 79:460 80:1095 81:831 82:506 83:464
84:649 85:1081 86:563 87:746 88:333 89:1578
90:183 91:3705 92:514 93:1056 94:1262 95:787
96:461 97:251 98:822 99:35 101:56 103:5
106:1 107:5 108:84 109:925 110:547 111:688
112:314 113:390 114:502 115:675 116:930 117:673
118:767 119:1134 120:299 121:648 122:1625 123:1054
124:1225 125:1255 128:213 129:155 130:166 131:563
132:104 133:19 134:209 135:49 136:211 137:139
138:301 139:104 140:463 141:174 142:382 143:396
144:482 145:52 146:437 147:207 148:567 149:232
150:163 151:187 152:305 153:179 154:2 155:395
156:188 157:324 158:132 159:377 160:315 161:235
162:276 163:155 164:489 165:347 166:511 167:425
168:714 169:151 170:778 171:77 172:1 173:1510
174:530 175:348 177:73 178:852 180:812 181:9
182:420 183:205 184:253 185:1 186:1138 187:802
188:983 189:999 190:4830 192:5747 193:4827 194:3458
195:2963 196:1192 197:16 198:3511 199:3890 200:5521
201:1490 202:8131 203:8306 204:4061 205:2309 206:2641
207:2958 208:3967 209:3479 210:2656 211:1373 212:1989
213:1704 214:735 215:66 216:4856 217:1657 218:550
219:372 220:1191 221:465 222:305 223:128

End of report
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[bgp-stats] Routing Table Report - Japan view

* BGP Routing Table Analysis Reports *
Routing Table Report 04:00 +10GMT Sun 24 Apr, 2011

Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/

Analysis Summary
----------------

BGP routing table entries examined: 355507
Prefixes after maximum aggregation: 160798
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 175370
Total ASes present in the Internet Routing Table: 37372
Prefixes per ASN: 9.51
Origin-only ASes present in the Internet Routing Table: 31315
Origin ASes announcing only one prefix: 15066
Transit ASes present in the Internet Routing Table: 5047
Transit-only ASes present in the Internet Routing Table: 134
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 36
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 565
Unregistered ASNs in the Routing Table: 277
Number of 32-bit ASNs allocated by the RIRs: 1311
Number of 32-bit ASNs visible in the Routing Table: 1010
Prefixes from 32-bit ASNs in the Routing Table: 2248
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 148
Number of addresses announced to Internet: 2418041152
Equivalent to 144 /8s, 32 /16s and 97 /24s
Percentage of available address space announced: 65.2
Percentage of allocated address space announced: 65.2
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.5
Total number of prefixes smaller than registry allocations: 147616

APNIC Region Analysis Summary
-----------------------------

Prefixes being announced by APNIC Region ASes: 88947
Total APNIC prefixes after maximum aggregation: 29960
APNIC Deaggregation factor: 2.97
Prefixes being announced from the APNIC address blocks: 85437
Unique aggregates announced from the APNIC address blocks: 36858
APNIC Region origin ASes present in the Internet Routing Table: 4416
APNIC Prefixes per ASN: 19.35
APNIC Region origin ASes announcing only one prefix: 1224
APNIC Region transit ASes present in the Internet Routing Table: 700
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 22
Number of APNIC region 32-bit ASNs visible in the Routing Table: 48
Number of APNIC addresses announced to Internet: 610709280
Equivalent to 36 /8s, 102 /16s and 175 /24s
Percentage of available APNIC address space announced: 77.4

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes: 140016
Total ARIN prefixes after maximum aggregation: 71176
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 112450
Unique aggregates announced from the ARIN address blocks: 45219
ARIN Region origin ASes present in the Internet Routing Table: 14332
ARIN Prefixes per ASN: 7.85
ARIN Region origin ASes announcing only one prefix: 5470
ARIN Region transit ASes present in the Internet Routing Table: 1491
Average ARIN Region AS path length visible: 3.9
Max ARIN Region AS path length visible: 23
Number of ARIN region 32-bit ASNs visible in the Routing Table: 11
Number of ARIN addresses announced to Internet: 798925824
Equivalent to 47 /8s, 158 /16s and 164 /24s
Percentage of available ARIN address space announced: 63.5

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes: 83967
Total RIPE prefixes after maximum aggregation: 47852
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 77124
Unique aggregates announced from the RIPE address blocks: 51029
RIPE Region origin ASes present in the Internet Routing Table: 15541
RIPE Prefixes per ASN: 4.96
RIPE Region origin ASes announcing only one prefix: 7808
RIPE Region transit ASes present in the Internet Routing Table: 2437
Average RIPE Region AS path length visible: 4.7
Max RIPE Region AS path length visible: 36
Number of RIPE region 32-bit ASNs visible in the Routing Table: 749
Number of RIPE addresses announced to Internet: 466782208
Equivalent to 27 /8s, 210 /16s and 136 /24s
Percentage of available RIPE address space announced: 75.2

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes: 32380
Total LACNIC prefixes after maximum aggregation: 7413
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31391
Unique aggregates announced from the LACNIC address blocks: 16388
LACNIC Region origin ASes present in the Internet Routing Table: 1440
LACNIC Prefixes per ASN: 21.80
LACNIC Region origin ASes announcing only one prefix: 430
LACNIC Region transit ASes present in the Internet Routing Table: 262
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 197
Number of LACNIC addresses announced to Internet: 82652288
Equivalent to 4 /8s, 237 /16s and 44 /24s
Percentage of available LACNIC address space announced: 54.7

LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
262144-263167 plus ERX transfers
LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
200/8, 201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes: 7724
Total AfriNIC prefixes after maximum aggregation: 1840
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 6112
Unique aggregates announced from the AfriNIC address blocks: 1899
AfriNIC Region origin ASes present in the Internet Routing Table: 446
AfriNIC Prefixes per ASN: 13.70
AfriNIC Region origin ASes announcing only one prefix: 134
AfriNIC Region transit ASes present in the Internet Routing Table: 96
Average AfriNIC Region AS path length visible: 4.7
Max AfriNIC Region AS path length visible: 31
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23318272
Equivalent to 1 /8s, 99 /16s and 207 /24s
Percentage of available AfriNIC address space announced: 34.7

AfriNIC AS Blocks 36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks 41/8, 102/8, 105/8, 197/8,

APNIC Region per AS prefix count summary
----------------------------------------

ASN No of nets /20 equiv MaxAgg Description
4766 2430 9482 904 Korea Telecom (KIX)
17974 1811 515 29 PT TELEKOMUNIKASI INDONESIA
7545 1549 300 81 TPG Internet Pty Ltd
4755 1454 634 167 TATA Communications formerly
7552 1195 1064 7 Vietel Corporation
24560 1140 323 204 Bharti Airtel Ltd., Telemedia
9583 1054 77 495 Sify Limited
4808 1030 2097 293 CNCGROUP IP network: China169
9829 1008 870 50 BSNL National Internet Backbo
17488 942 164 98 Hathway IP Over Cable Interne

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-APNIC

ARIN Region per AS prefix count summary
---------------------------------------

ASN No of nets /20 equiv MaxAgg Description
6389 3651 3822 255 bellsouth.net, inc.
4323 2648 1090 398 Time Warner Telecom
1785 1789 681 128 PaeTec Communications, Inc.
18566 1760 349 229 Covad Communications
6478 1641 309 46 AT&T Worldnet Services
20115 1535 1552 638 Charter Communications
19262 1494 4949 297 Verizon Global Networks
7018 1357 6801 886 AT&T WorldNet Services
22773 1299 2865 84 Cox Communications, Inc.
2386 1269 536 912 AT&T Data Communications Serv

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-ARIN

RIPE Region per AS prefix count summary
---------------------------------------

ASN No of nets /20 equiv MaxAgg Description
6830 519 1780 321 UPC Distribution Services
34984 508 106 182 BILISIM TELEKOM
3292 455 1997 391 TDC Tele Danmark
29049 450 33 48 AzerSat LLC.
8866 446 134 26 Bulgarian Telecommunication C
20940 439 129 335 Akamai Technologies European
3320 423 7609 368 Deutsche Telekom AG
12479 408 577 6 Uni2 Autonomous System
8551 405 354 47 Bezeq International
702 396 1802 309 UUNET - Commercial IP service

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-RIPE

LACNIC Region per AS prefix count summary
-----------------------------------------

ASN No of nets /20 equiv MaxAgg Description
10620 1437 268 160 TVCABLE BOGOTA
28573 1281 988 87 NET Servicos de Comunicao S.A
8151 1245 2688 368 UniNet S.A. de C.V.
7303 927 467 149 Telecom Argentina Stet-France
6503 907 354 72 AVANTEL, S.A.
14420 663 53 91 CORPORACION NACIONAL DE TELEC
22047 565 310 15 VTR PUNTO NET S.A.
3816 516 225 98 Empresa Nacional de Telecomun
11172 488 99 82 Servicios Alestra S.A de C.V
27947 482 53 53 Telconet S.A

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-LACNIC

AfriNIC Region per AS prefix count summary
------------------------------------------

ASN No of nets /20 equiv MaxAgg Description
8452 866 445 11 TEDATA
24863 775 147 39 LINKdotNET AS number
15475 422 90 8 Nile Online
36992 297 415 13 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 238 215 13 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
24835 209 78 10 RAYA Telecom - Egypt
29571 161 17 11 Ci Telecom Autonomous system
16637 148 441 86 MTN Network Solutions

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-AFRINIC

Global Per AS prefix count summary
----------------------------------

ASN No of nets /20 equiv MaxAgg Description
6389 3651 3822 255 bellsouth.net, inc.
4323 2648 1090 398 Time Warner Telecom
4766 2430 9482 904 Korea Telecom (KIX)
23456 2248 651 1230 32-bit ASN transition
17974 1811 515 29 PT TELEKOMUNIKASI INDONESIA
1785 1789 681 128 PaeTec Communications, Inc.
18566 1760 349 229 Covad Communications
6478 1641 309 46 AT&T Worldnet Services
7545 1549 300 81 TPG Internet Pty Ltd
20115 1535 1552 638 Charter Communications

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet

Global Per AS Maximum Aggr summary
----------------------------------

ASN No of nets Net Savings Description
4323 2648 2250 Time Warner Telecom
17974 1811 1782 PT TELEKOMUNIKASI INDONESIA
1785 1789 1661 PaeTec Communications, Inc.
6478 1641 1595 AT&T Worldnet Services
18566 1760 1531 Covad Communications
4766 2430 1526 Korea Telecom (KIX)
7545 1549 1468 TPG Internet Pty Ltd
4755 1454 1287 TATA Communications formerly
10620 1437 1277 TVCABLE BOGOTA
11492 1256 1241 Cable One

Complete listing at http://thyme.rand.apnic.net/current/data-CIDRnet

List of Unregistered Origin ASNs (Global)
-----------------------------------------

Complete listing at http://thyme.rand.apnic.net/current/data-badAS

Advertised Unallocated Addresses
--------------------------------

Complete listing at http://thyme.rand.apnic.net/current/data-add-IANA

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:20 /9:12 /10:28 /11:77 /12:221
/13:458 /14:787 /15:1379 /16:11664 /17:5741 /18:9619
/19:19170 /20:25629 /21:25627 /22:33789 /23:32606 /24:185535
/25:1112 /26:1280 /27:698 /28:39 /29:8 /30:2
/31:0 /32:6

Advertised prefixes smaller than registry allocations
-----------------------------------------------------

ASN No of nets Total ann. Description
6389 2252 3651 bellsouth.net, inc.
18566 1728 1760 Covad Communications
6478 1595 1641 AT&T Worldnet Services
4323 1345 2648 Time Warner Telecom
10620 1327 1437 TVCABLE BOGOTA
11492 1205 1256 Cable One
23456 1131 2248 32-bit ASN transition
7011 1062 1161 Citizens Utilities
1785 1059 1789 PaeTec Communications, Inc.
22773 843 1299 Cox Communications, Inc.

Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos

Number of /24s announced per /8 block (Global)
----------------------------------------------

1:262 2:44 4:14 5:1 6:3 8:348
12:2004 13:1 14:447 15:15 16:3 17:8
20:9 23:5 24:1607 27:723 31:210 32:60
33:3 34:2 37:1 38:765 40:101 41:2439
42:3 44:3 46:867 47:4 49:177 50:366
52:13 55:3 56:2 57:31 58:847 59:478
60:387 61:1266 62:985 63:1920 64:3934 65:2317
66:4355 67:1855 68:1081 69:2977 70:699 71:344
72:1904 73:1 74:2351 75:297 76:336 77:844
78:677 79:451 80:1097 81:829 82:488 83:461
84:647 85:1079 86:565 87:742 88:332 89:1580
90:183 91:3713 92:514 93:1054 94:1259 95:789
96:466 97:251 98:823 99:35 101:64 103:5
106:1 107:5 108:84 109:929 110:557 111:696
112:325 113:391 114:523 115:683 116:949 117:676
118:806 119:1142 120:301 121:672 122:1628 123:1071
124:1251 125:1272 128:265 129:160 130:172 131:565
132:113 133:19 134:183 135:49 136:214 137:142
138:301 139:106 140:486 141:174 142:398 143:397
144:485 145:52 146:441 147:207 148:576 149:233
150:171 151:187 152:307 153:179 154:3 155:396
156:191 157:353 158:132 159:372 160:316 161:243
162:277 163:165 164:489 165:349 166:511 167:425
168:719 169:153 170:783 171:77 172:1 173:1511
174:530 175:360 177:73 178:853 180:822 181:9
182:432 183:205 184:253 185:1 186:1140 187:805
188:985 189:1004 190:4826 192:5779 193:4823 194:3459
195:2965 196:1180 197:16 198:3563 199:3919 200:5475
201:1494 202:8360 203:8440 204:4137 205:2325 206:2740
207:3029 208:3971 209:3502 210:2716 211:1382 212:1975
213:1715 214:736 215:67 216:4879 217:1657 218:561
219:374 220:1195 221:483 222:341 223:143

End of report
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Friday, April 22, 2011

[bgp-stats] Routing Table Report - RouteViews-3 view

* BGP Routing Table Analysis Reports *
Routing Table Report 00:00 GMT Sat 23 Apr, 2011

NB: RouteViews data includes iBGP information from some ASNs.
Treat the information provided below appropriately.

Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/rviews/

Analysis Summary
----------------

BGP routing table entries examined: 360055
Prefixes after maximum aggregation: 162133
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 175418
Total ASes present in the Internet Routing Table: 37398
Prefixes per ASN: 9.63
Origin-only ASes present in the Internet Routing Table: 31332
Origin ASes announcing only one prefix: 15025
Transit ASes present in the Internet Routing Table: 5049
Transit-only ASes present in the Internet Routing Table: 128
Average AS path length visible in the Internet Routing Table: 4.1
Max AS path length visible: 31
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 2949
Unregistered ASNs in the Routing Table: 290
Number of 32-bit ASNs allocated by the RIRs: 1309
Number of 32-bit ASNs visible in the Routing Table: 1017
Prefixes from 32-bit ASNs in the Routing Table: 2281
Special use prefixes present in the Routing Table: 76
Prefixes being announced from unallocated address space: 169
Number of addresses announced to Internet: 2418734713
Equivalent to 144 /8s, 42 /16s and 246 /24s
Percentage of available address space announced: 65.3
Percentage of allocated address space announced: 65.3
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.5
Total number of prefixes smaller than registry allocations: 149414

APNIC Region Analysis Summary
-----------------------------

Prefixes being announced by APNIC Region ASes: 86754
Total APNIC prefixes after maximum aggregation: 28854
APNIC Deaggregation factor: 3.01
Prefixes being announced from the APNIC address blocks: 83336
Unique aggregates announced from the APNIC address blocks: 36859
APNIC Region origin ASes present in the Internet Routing Table: 4401
APNIC Prefixes per ASN: 18.94
APNIC Region origin ASes announcing only one prefix: 1235
APNIC Region transit ASes present in the Internet Routing Table: 697
Average APNIC Region AS path length visible: 4.3
Max APNIC Region AS path length visible: 22
Number of APNIC region 32-bit ASNs visible in the Routing Table: 48
Number of APNIC addresses announced to Internet: 610700993
Equivalent to 36 /8s, 102 /16s and 142 /24s
Percentage of available APNIC address space announced: 77.4

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes: 143061
Total ARIN prefixes after maximum aggregation: 73234
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 115135
Unique aggregates announced from the ARIN address blocks: 45157
ARIN Region origin ASes present in the Internet Routing Table: 14349
ARIN Prefixes per ASN: 8.02
ARIN Region origin ASes announcing only one prefix: 5459
ARIN Region transit ASes present in the Internet Routing Table: 1482
Average ARIN Region AS path length visible: 3.7
Max ARIN Region AS path length visible: 25
Number of ARIN region 32-bit ASNs visible in the Routing Table: 11
Number of ARIN addresses announced to Internet: 798691352
Equivalent to 47 /8s, 155 /16s and 16 /24s
Percentage of available ARIN address space announced: 63.5

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes: 87306
Total RIPE prefixes after maximum aggregation: 48182
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 79627
Unique aggregates announced from the RIPE address blocks: 50905
RIPE Region origin ASes present in the Internet Routing Table: 15571
RIPE Prefixes per ASN: 5.11
RIPE Region origin ASes announcing only one prefix: 7765
RIPE Region transit ASes present in the Internet Routing Table: 2440
Average RIPE Region AS path length visible: 4.4
Max RIPE Region AS path length visible: 29
Number of RIPE region 32-bit ASNs visible in the Routing Table: 757
Number of RIPE addresses announced to Internet: 467129468
Equivalent to 27 /8s, 215 /16s and 212 /24s
Percentage of available RIPE address space announced: 75.3

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes: 32677
Total LACNIC prefixes after maximum aggregation: 7453
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 31683
Unique aggregates announced from the LACNIC address blocks: 16483
LACNIC Region origin ASes present in the Internet Routing Table: 1440
LACNIC Prefixes per ASN: 22.00
LACNIC Region origin ASes announcing only one prefix: 432
LACNIC Region transit ASes present in the Internet Routing Table: 260
Average LACNIC Region AS path length visible: 4.5
Max LACNIC Region AS path length visible: 29
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 196
Number of LACNIC addresses announced to Internet: 82680460
Equivalent to 4 /8s, 237 /16s and 154 /24s
Percentage of available LACNIC address space announced: 54.8

LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
262144-263167 plus ERX transfers
LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
200/8, 201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes: 7683
Total AfriNIC prefixes after maximum aggregation: 1831
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 6082
Unique aggregates announced from the AfriNIC address blocks: 1891
AfriNIC Region origin ASes present in the Internet Routing Table: 439
AfriNIC Prefixes per ASN: 13.85
AfriNIC Region origin ASes announcing only one prefix: 134
AfriNIC Region transit ASes present in the Internet Routing Table: 97
Average AfriNIC Region AS path length visible: 4.4
Max AfriNIC Region AS path length visible: 31
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23316992
Equivalent to 1 /8s, 99 /16s and 202 /24s
Percentage of available AfriNIC address space announced: 34.7

AfriNIC AS Blocks 36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks 41/8, 102/8, 105/8, 197/8,

APNIC Region per AS prefix count summary
----------------------------------------

ASN No of nets /20 equiv MaxAgg Description
4766 1874 9507 606 Korea Telecom (KIX)
17974 1813 515 29 PT TELEKOMUNIKASI INDONESIA
4755 1450 374 164 Videsh Sanchar Nigam Ltd. Aut
7545 1437 300 78 TPG Internet Pty Ltd
7552 1195 1064 7 Vietel Corporation
24560 1140 323 204 Bharti Airtel Ltd.
9583 1056 77 494 Sify Limited
9829 993 864 70 BSNL National Internet Backbo
4808 986 2035 274 CNCGROUP IP network: China169
17488 957 164 98 Hathway IP Over Cable Interne

Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-APNIC

ARIN Region per AS prefix count summary
---------------------------------------

ASN No of nets /20 equiv MaxAgg Description
6389 3650 3822 255 bellsouth.net, inc.
4323 2633 1099 396 Time Warner Telecom
1785 1789 680 128 AppliedTheory Corporation
18566 1760 349 229 Covad Communications
6478 1641 309 46 AT&T Worldnet Services
20115 1585 1556 638 Charter Communications
19262 1496 4949 299 Verizon Global Networks
7018 1367 6945 895 AT&T WorldNet Services
22773 1298 2865 84 Cox Communications, Inc.
2386 1270 536 912 AT&T Data Communications Serv

Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-ARIN

RIPE Region per AS prefix count summary
---------------------------------------

ASN No of nets /20 equiv MaxAgg Description
286 1021 798 175 KPNQwest Backbone AS
9116 542 326 30 Goldenlines main autonomous s
6830 519 1780 320 UPC Distribution Services
3292 508 1997 391 TDC Tele Danmark
34984 508 106 182 Tellcom Iletisim Hizmetleri
29049 450 33 48 AzerSat LLC.
8866 447 134 26 Bulgarian Telecommunication C
20940 444 130 338 Akamai Technologies European
3320 423 7609 368 Deutsche Telekom AG
12479 408 577 6 Uni2 Autonomous System

Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-RIPE

LACNIC Region per AS prefix count summary
-----------------------------------------

ASN No of nets /20 equiv MaxAgg Description
10620 1437 268 160 TVCABLE BOGOTA
8151 1349 2669 365 Uninet S.A. de C.V.
28573 1272 988 87 Types of queries are: POCs, o
7303 927 467 149 Telecom Argentina Stet-France
6503 908 354 73 AVANTEL, S.A.
14420 663 53 91 Types of queries are: POCs, o
22047 565 310 15 Types of queries are: POCs, o
3816 518 225 97 COLOMBIA TELECOMUNICACIONES S
14117 492 46 43 Telefonica del Sur S.A.
27947 492 54 48 Telconet S.A

Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-LACNIC

AfriNIC Region per AS prefix count summary
------------------------------------------

ASN No of nets /20 equiv MaxAgg Description
8452 872 445 11 TEDATA
24863 779 147 40 LINKdotNET AS number
15475 429 90 8 Nile Online
36992 297 415 13 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 238 215 13 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
24835 209 78 10 RAYA Telecom - Egypt
29571 161 17 11 Ci Telecom Autonomous system
16637 150 441 86 Johnnic e-Ventures

Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-AFRINIC

Global Per AS prefix count summary
----------------------------------

ASN No of nets /20 equiv MaxAgg Description
6389 3650 3822 255 bellsouth.net, inc.
4323 2633 1099 396 Time Warner Telecom
23456 2281 655 1241 >>UNKNOWN<<
4766 1874 9507 606 Korea Telecom (KIX)
17974 1813 515 29 PT TELEKOMUNIKASI INDONESIA
1785 1789 680 128 AppliedTheory Corporation
18566 1760 349 229 Covad Communications
6478 1641 309 46 AT&T Worldnet Services
20115 1585 1556 638 Charter Communications
19262 1496 4949 299 Verizon Global Networks

Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet

Global Per AS Maximum Aggr summary
----------------------------------

ASN No of nets Net Savings Description
4323 2633 2237 Time Warner Telecom
17974 1813 1784 PT TELEKOMUNIKASI INDONESIA
1785 1789 1661 AppliedTheory Corporation
6478 1641 1595 AT&T Worldnet Services
18566 1760 1531 Covad Communications
7545 1437 1359 TPG Internet Pty Ltd
4755 1450 1286 Videsh Sanchar Nigam Ltd. Aut
10620 1437 1277 TVCABLE BOGOTA
4766 1874 1268 Korea Telecom (KIX)
11492 1254 1239 Cable One

Complete listing at http://thyme.rand.apnic.net/rviews/data-CIDRnet

List of Unregistered Origin ASNs (Global)
-----------------------------------------

Complete listing at http://thyme.rand.apnic.net/rviews/data-badAS

Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------

Complete listing at http://thyme.rand.apnic.net/rviews/data-dsua

Advertised Unallocated Addresses
--------------------------------

Network Origin AS Description
24.225.128.0/18 36377 Comcast Telecommunications, I
24.225.192.0/23 36377 Comcast Telecommunications, I
24.225.192.0/18 36377 Comcast Telecommunications, I
24.225.224.0/21 36377 Comcast Telecommunications, I
24.225.237.0/24 36377 Comcast Telecommunications, I
24.225.248.0/21 36377 Comcast Telecommunications, I
31.192.112.0/20 30361 Swiftwill Solutions
31.192.128.0/19 31214 TIS-DIALOG Autonomous system
31.192.232.0/23 47271 CJSC "Uralunicom"
31.192.232.0/22 47271 CJSC "Uralunicom"

Complete listing at http://thyme.rand.apnic.net/rviews/data-add-IANA

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:20 /9:12 /10:28 /11:78 /12:221
/13:458 /14:791 /15:1407 /16:11781 /17:5990 /18:9913
/19:19691 /20:26275 /21:26010 /22:34157 /23:33141 /24:187430
/25:369 /26:358 /27:166 /28:266 /29:181 /30:619
/31:61 /32:632

Advertised prefixes smaller than registry allocations
-----------------------------------------------------

ASN No of nets Total ann. Description
6389 2251 3650 bellsouth.net, inc.
18566 1728 1760 Covad Communications
6478 1595 1641 AT&T Worldnet Services
4323 1341 2633 Time Warner Telecom
10620 1327 1437 TVCABLE BOGOTA
11492 1203 1254 Cable One
23456 1150 2281 >>UNKNOWN<<
7011 1062 1161 Citizens Utilities
1785 1059 1789 AppliedTheory Corporation
286 881 1021 KPNQwest Backbone AS

Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos

Number of /24s announced per /8 block (Global)
----------------------------------------------

1:261 2:63 4:18 5:1 6:3 8:348
12:2013 13:1 14:439 15:15 16:3 17:8
20:9 23:5 24:1619 27:725 31:209 32:126
33:3 34:2 37:1 38:765 40:101 41:2401
42:3 44:3 46:869 47:4 49:177 50:366
52:13 55:3 56:2 57:40 58:848 59:480
60:356 61:1271 62:1001 63:1933 64:3961 65:2327
66:4380 67:1880 68:1257 69:3082 70:745 71:350
72:1939 73:3 74:2409 75:311 76:344 77:884
78:683 79:470 80:1106 81:835 82:514 83:470
84:667 85:1096 86:612 87:784 88:338 89:1634
90:183 91:3719 92:518 93:1077 94:1290 95:796
96:466 97:251 98:832 99:35 101:63 103:5
106:1 107:5 108:84 109:944 110:550 111:695
112:325 113:392 114:527 115:685 116:965 117:676
118:805 119:1142 120:301 121:676 122:1628 123:1071
124:1250 125:1271 128:266 129:167 130:172 131:566
132:113 133:19 134:219 135:49 136:214 137:143
138:302 139:116 140:486 141:174 142:401 143:398
144:485 145:52 146:442 147:218 148:577 149:233
150:171 151:187 152:307 153:179 154:3 155:396
156:191 157:354 158:132 159:382 160:316 161:243
162:277 163:165 164:487 165:368 166:511 167:425
168:719 169:154 170:784 171:77 172:1 173:1529
174:535 175:359 177:71 178:865 180:820 181:9
182:433 183:205 184:334 185:1 186:1140 187:813
188:991 189:1004 190:4848 192:5827 193:4852 194:3517
195:3112 196:1171 197:16 198:3578 199:3927 200:5546
201:1505 202:8356 203:8438 204:4139 205:2336 206:2762
207:3033 208:3989 209:3518 210:2735 211:1384 212:2028
213:1769 214:738 215:67 216:4898 217:1668 218:564
219:375 220:1198 221:485 222:341 223:143

End of report
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