BGP Routing: 2011-05-15

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, May 21, 2011

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

* BGP Routing Table Analysis Reports *
Routing Table Report 00:00 GMT Sun 22 May, 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: 361839
Prefixes after maximum aggregation: 163189
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 176630
Total ASes present in the Internet Routing Table: 37637
Prefixes per ASN: 9.61
Origin-only ASes present in the Internet Routing Table: 31434
Origin ASes announcing only one prefix: 15041
Transit ASes present in the Internet Routing Table: 5109
Transit-only ASes present in the Internet Routing Table: 132
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 33
Max AS path prepend of ASN (48687) 24
Prefixes from unregistered ASNs in the Routing Table: 3258
Unregistered ASNs in the Routing Table: 362
Number of 32-bit ASNs allocated by the RIRs: 1367
Number of 32-bit ASNs visible in the Routing Table: 1094
Prefixes from 32-bit ASNs in the Routing Table: 2489
Special use prefixes present in the Routing Table: 78
Prefixes being announced from unallocated address space: 164
Number of addresses announced to Internet: 2433215095
Equivalent to 145 /8s, 7 /16s and 234 /24s
Percentage of available address space announced: 65.6
Percentage of allocated address space announced: 65.6
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.9
Total number of prefixes smaller than registry allocations: 150285

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

Prefixes being announced by APNIC Region ASes: 87118
Total APNIC prefixes after maximum aggregation: 28862
APNIC Deaggregation factor: 3.02
Prefixes being announced from the APNIC address blocks: 83598
Unique aggregates announced from the APNIC address blocks: 36643
APNIC Region origin ASes present in the Internet Routing Table: 4429
APNIC Prefixes per ASN: 18.88
APNIC Region origin ASes announcing only one prefix: 1238
APNIC Region transit ASes present in the Internet Routing Table: 698
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 21
Number of APNIC region 32-bit ASNs visible in the Routing Table: 47
Number of APNIC addresses announced to Internet: 615256257
Equivalent to 36 /8s, 172 /16s and 16 /24s
Percentage of available APNIC address space announced: 78.0

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: 143335
Total ARIN prefixes after maximum aggregation: 73489
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 115280
Unique aggregates announced from the ARIN address blocks: 45537
ARIN Region origin ASes present in the Internet Routing Table: 14387
ARIN Prefixes per ASN: 8.01
ARIN Region origin ASes announcing only one prefix: 5467
ARIN Region transit ASes present in the Internet Routing Table: 1481
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 22
Number of ARIN region 32-bit ASNs visible in the Routing Table: 12
Number of ARIN addresses announced to Internet: 801731608
Equivalent to 47 /8s, 201 /16s and 116 /24s
Percentage of available ARIN address space announced: 63.7

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: 87742
Total RIPE prefixes after maximum aggregation: 48616
RIPE Deaggregation factor: 1.80
Prefixes being announced from the RIPE address blocks: 80448
Unique aggregates announced from the RIPE address blocks: 51519
RIPE Region origin ASes present in the Internet Routing Table: 15642
RIPE Prefixes per ASN: 5.14
RIPE Region origin ASes announcing only one prefix: 7769
RIPE Region transit ASes present in the Internet Routing Table: 2487
Average RIPE Region AS path length visible: 4.1
Max RIPE Region AS path length visible: 33
Number of RIPE region 32-bit ASNs visible in the Routing Table: 812
Number of RIPE addresses announced to Internet: 473529852
Equivalent to 28 /8s, 57 /16s and 125 /24s
Percentage of available RIPE address space announced: 76.3

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: 32963
Total LACNIC prefixes after maximum aggregation: 7542
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31990
Unique aggregates announced from the LACNIC address blocks: 16773
LACNIC Region origin ASes present in the Internet Routing Table: 1455
LACNIC Prefixes per ASN: 21.99
LACNIC Region origin ASes announcing only one prefix: 431
LACNIC Region transit ASes present in the Internet Routing Table: 264
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 20
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 219
Number of LACNIC addresses announced to Internet: 83538440
Equivalent to 4 /8s, 250 /16s and 178 /24s
Percentage of available LACNIC address space announced: 55.3

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: 7892
Total AfriNIC prefixes after maximum aggregation: 1884
AfriNIC Deaggregation factor: 4.19
Prefixes being announced from the AfriNIC address blocks: 6213
Unique aggregates announced from the AfriNIC address blocks: 1903
AfriNIC Region origin ASes present in the Internet Routing Table: 447
AfriNIC Prefixes per ASN: 13.90
AfriNIC Region origin ASes announcing only one prefix: 136
AfriNIC Region transit ASes present in the Internet Routing Table: 101
Average AfriNIC Region AS path length visible: 4.3
Max AfriNIC Region AS path length visible: 26
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 4
Number of AfriNIC addresses announced to Internet: 23207680
Equivalent to 1 /8s, 98 /16s and 31 /24s
Percentage of available AfriNIC address space announced: 34.6

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 1897 9502 615 Korea Telecom (KIX)
17974 1826 516 32 PT TELEKOMUNIKASI INDONESIA
7545 1555 301 86 TPG Internet Pty Ltd
4755 1471 630 167 Videsh Sanchar Nigam Ltd. Aut
24560 1151 336 184 Bharti Airtel Ltd.
7552 1138 1064 7 Vietel Corporation
9583 1082 81 511 Sify Limited
9829 1039 874 51 BSNL National Internet Backbo
4808 959 2023 275 CNCGROUP IP network: China169
17488 945 170 101 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 3643 3822 255 bellsouth.net, inc.
4323 1973 1097 398 Time Warner Telecom
18566 1904 362 266 Covad Communications
1785 1787 681 124 AppliedTheory Corporation
6478 1694 315 54 AT&T Worldnet Services
20115 1588 1543 633 Charter Communications
19262 1497 4943 301 Verizon Global Networks
7018 1372 7085 897 AT&T WorldNet Services
22773 1331 2897 88 Cox Communications, Inc.
11492 1280 240 15 Cable One

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 1014 798 176 KPNQwest Backbone AS
9116 539 326 30 Goldenlines main autonomous s
6830 520 1780 320 UPC Distribution Services
34984 514 106 182 Tellcom Iletisim Hizmetleri
3292 513 2062 395 TDC Tele Danmark
20940 462 135 354 Akamai Technologies European
29049 453 33 44 AzerSat LLC.
8866 444 134 26 Bulgarian Telecommunication C
12479 429 577 6 Uni2 Autonomous System
3320 418 8149 364 Deutsche Telekom AG

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 1481 273 154 TVCABLE BOGOTA
8151 1370 2685 358 Uninet S.A. de C.V.
28573 1313 991 86 Types of queries are: POCs, o
7303 925 470 151 Telecom Argentina Stet-France
6503 734 354 74 AVANTEL, S.A.
14420 670 54 91 Types of queries are: POCs, o
22047 563 310 15 Types of queries are: POCs, o
3816 523 227 100 COLOMBIA TELECOMUNICACIONES S
13489 515 258 124 Orbitel S.A. E.S.P.
27947 500 53 51 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 894 445 11 TEDATA
24863 788 147 38 LINKdotNET AS number
15475 416 90 8 Nile Online
36992 287 331 17 Etisalat MISR
3741 268 985 228 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
33776 217 12 11 Starcomms Nigeria Limited
24835 209 78 10 RAYA Telecom - Egypt
29571 162 17 11 Ci Telecom Autonomous system
16637 153 441 87 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 3643 3822 255 bellsouth.net, inc.
23456 2489 629 1351 >>UNKNOWN<<
4323 1973 1097 398 Time Warner Telecom
18566 1904 362 266 Covad Communications
4766 1897 9502 615 Korea Telecom (KIX)
17974 1826 516 32 PT TELEKOMUNIKASI INDONESIA
1785 1787 681 124 AppliedTheory Corporation
6478 1694 315 54 AT&T Worldnet Services
20115 1588 1543 633 Charter Communications
7545 1555 301 86 TPG Internet Pty Ltd

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

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

ASN No of nets Net Savings Description
17974 1826 1794 PT TELEKOMUNIKASI INDONESIA
1785 1787 1663 AppliedTheory Corporation
6478 1694 1640 AT&T Worldnet Services
18566 1904 1638 Covad Communications
4323 1973 1575 Time Warner Telecom
7545 1555 1469 TPG Internet Pty Ltd
10620 1481 1327 TVCABLE BOGOTA
4755 1471 1304 Videsh Sanchar Nigam Ltd. Aut
4766 1897 1282 Korea Telecom (KIX)
11492 1280 1265 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 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.25.107.0/24 4323 Time Warner Telecom
26973 UNALLOCATED 12.39.152.0/24 1239 Sprint
26973 UNALLOCATED 12.39.154.0/23 1239 Sprint
26973 UNALLOCATED 12.39.155.0/24 1239 Sprint
26973 UNALLOCATED 12.39.159.0/24 1239 Sprint
25639 UNALLOCATED 12.41.169.0/24 7018 AT&T WorldNet Servic
13317 UNALLOCATED 12.44.10.0/24 7018 AT&T WorldNet Servic
23502 UNALLOCATED 12.44.44.0/24 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
27.0.128.0/17 7514 Media Exchange, Inc.
41.190.32.0/23 31856 CABSAS
41.190.34.0/23 31856 CABSAS
41.190.36.0/23 31856 CABSAS

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 /8:21 /9:12 /10:28 /11:80 /12:226
/13:461 /14:801 /15:1427 /16:11910 /17:6066 /18:10048
/19:19900 /20:26345 /21:26315 /22:34602 /23:33500 /24:187455
/25:373 /26:350 /27:171 /28:285 /29:176 /30:598
/31:65 /32:624

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

ASN No of nets Total ann. Description
6389 2243 3643 bellsouth.net, inc.
18566 1862 1904 Covad Communications
6478 1648 1694 AT&T Worldnet Services
10620 1371 1481 TVCABLE BOGOTA
11492 1226 1280 Cable One
23456 1222 2489 >>UNKNOWN<<
7011 1060 1159 Citizens Utilities
1785 1051 1787 AppliedTheory Corporation
4323 884 1973 Time Warner Telecom
286 874 1014 KPNQwest Backbone AS

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

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

1:279 2:62 4:20 5:1 6:3 8:352
12:1985 13:1 14:450 15:15 16:3 17:8
20:8 23:7 24:1648 27:758 31:348 32:126
33:4 34:2 37:1 38:740 40:101 41:2527
42:5 44:3 46:928 47:4 49:193 50:416
52:13 54:1 55:3 56:2 57:40 58:812
59:484 60:387 61:1152 62:978 63:1948 64:3965
65:2292 66:4171 67:1872 68:1270 69:3090 70:749
71:357 72:1916 73:3 74:2406 75:317 76:348
77:909 78:713 79:482 80:1106 81:826 82:508
83:458 84:648 85:1080 86:612 87:776 88:334
89:1585 90:204 91:3788 92:516 93:1079 94:1294
95:829 96:504 97:249 98:846 99:35 101:59
103:13 106:1 107:7 108:85 109:955 110:599
111:713 112:303 113:401 114:536 115:662 116:967
117:690 118:801 119:1139 120:308 121:680 122:1622
123:1000 124:1265 125:1229 128:263 129:179 130:164
131:573 132:109 133:19 134:214 135:48 136:215
137:143 138:300 139:124 140:482 141:239 142:406
143:402 144:482 145:54 146:444 147:219 148:588
149:242 150:172 151:186 152:308 153:178 154:3
155:396 156:194 157:353 158:135 159:385 160:318
161:207 162:282 163:163 164:504 165:371 166:515
167:432 168:729 169:154 170:794 171:77 172:1
173:1578 174:555 175:375 177:131 178:926 180:823
181:17 182:446 183:195 184:355 185:1 186:1164
187:740 188:862 189:897 190:4819 192:5804 193:4875
194:3534 195:3117 196:1221 197:19 198:3611 199:3900
200:5544 201:1498 202:8288 203:8433 204:4163 205:2309
206:2749 207:2917 208:3977 209:3449 210:2729 211:1428
212:2034 213:1781 214:726 215:71 216:4920 217:1642
218:567 219:363 220:1200 221:464 222:334 223:148

End of report
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Friday, May 20, 2011

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

* BGP Routing Table Analysis Reports *
Routing Table Report 00:00 GMT Sat 21 May, 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: 362141
Prefixes after maximum aggregation: 163368
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 176709
Total ASes present in the Internet Routing Table: 37653
Prefixes per ASN: 9.62
Origin-only ASes present in the Internet Routing Table: 31451
Origin ASes announcing only one prefix: 15062
Transit ASes present in the Internet Routing Table: 5108
Transit-only ASes present in the Internet Routing Table: 129
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 33
Max AS path prepend of ASN (48687) 24
Prefixes from unregistered ASNs in the Routing Table: 3235
Unregistered ASNs in the Routing Table: 363
Number of 32-bit ASNs allocated by the RIRs: 1366
Number of 32-bit ASNs visible in the Routing Table: 1094
Prefixes from 32-bit ASNs in the Routing Table: 2483
Special use prefixes present in the Routing Table: 78
Prefixes being announced from unallocated address space: 169
Number of addresses announced to Internet: 2433546215
Equivalent to 145 /8s, 12 /16s and 247 /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: 90.9
Total number of prefixes smaller than registry allocations: 150210

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

Prefixes being announced by APNIC Region ASes: 87456
Total APNIC prefixes after maximum aggregation: 28943
APNIC Deaggregation factor: 3.02
Prefixes being announced from the APNIC address blocks: 83934
Unique aggregates announced from the APNIC address blocks: 36683
APNIC Region origin ASes present in the Internet Routing Table: 4437
APNIC Prefixes per ASN: 18.92
APNIC Region origin ASes announcing only one prefix: 1245
APNIC Region transit ASes present in the Internet Routing Table: 701
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 21
Number of APNIC region 32-bit ASNs visible in the Routing Table: 46
Number of APNIC addresses announced to Internet: 615217089
Equivalent to 36 /8s, 171 /16s and 119 /24s
Percentage of available APNIC address space announced: 78.0

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

Prefixes being announced by ARIN Region ASes: 143451
Total ARIN prefixes after maximum aggregation: 73601
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 115359
Unique aggregates announced from the ARIN address blocks: 45557
ARIN Region origin ASes present in the Internet Routing Table: 14394
ARIN Prefixes per ASN: 8.01
ARIN Region origin ASes announcing only one prefix: 5478
ARIN Region transit ASes present in the Internet Routing Table: 1479
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 22
Number of ARIN region 32-bit ASNs visible in the Routing Table: 12
Number of ARIN addresses announced to Internet: 801737240
Equivalent to 47 /8s, 201 /16s and 138 /24s
Percentage of available ARIN address space announced: 63.7

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

Prefixes being announced by RIPE Region ASes: 87679
Total RIPE prefixes after maximum aggregation: 48606
RIPE Deaggregation factor: 1.80
Prefixes being announced from the RIPE address blocks: 80408
Unique aggregates announced from the RIPE address blocks: 51508
RIPE Region origin ASes present in the Internet Routing Table: 15644
RIPE Prefixes per ASN: 5.14
RIPE Region origin ASes announcing only one prefix: 7774
RIPE Region transit ASes present in the Internet Routing Table: 2486
Average RIPE Region AS path length visible: 4.1
Max RIPE Region AS path length visible: 33
Number of RIPE region 32-bit ASNs visible in the Routing Table: 813
Number of RIPE addresses announced to Internet: 473202028
Equivalent to 28 /8s, 52 /16s and 125 /24s
Percentage of available RIPE address space announced: 76.2

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

Prefixes being announced by LACNIC Region ASes: 32947
Total LACNIC prefixes after maximum aggregation: 7533
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31974
Unique aggregates announced from the LACNIC address blocks: 16773
LACNIC Region origin ASes present in the Internet Routing Table: 1454
LACNIC Prefixes per ASN: 21.99
LACNIC Region origin ASes announcing only one prefix: 429
LACNIC Region transit ASes present in the Internet Routing Table: 261
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 20
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 219
Number of LACNIC addresses announced to Internet: 83548424
Equivalent to 4 /8s, 250 /16s and 217 /24s
Percentage of available LACNIC address space announced: 55.3

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: 7824
Total AfriNIC prefixes after maximum aggregation: 1888
AfriNIC Deaggregation factor: 4.14
Prefixes being announced from the AfriNIC address blocks: 6150
Unique aggregates announced from the AfriNIC address blocks: 1908
AfriNIC Region origin ASes present in the Internet Routing Table: 449
AfriNIC Prefixes per ASN: 13.70
AfriNIC Region origin ASes announcing only one prefix: 136
AfriNIC Region transit ASes present in the Internet Routing Table: 102
Average AfriNIC Region AS path length visible: 4.3
Max AfriNIC Region AS path length visible: 26
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 4
Number of AfriNIC addresses announced to Internet: 23216640
Equivalent to 1 /8s, 98 /16s and 66 /24s
Percentage of available AfriNIC address space announced: 34.6

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 1897 9502 615 Korea Telecom (KIX)
17974 1831 516 32 PT TELEKOMUNIKASI INDONESIA
7545 1555 301 86 TPG Internet Pty Ltd
4755 1470 374 166 Videsh Sanchar Nigam Ltd. Aut
24560 1153 336 184 Bharti Airtel Ltd.
7552 1139 1064 7 Vietel Corporation
9583 1083 81 512 Sify Limited
9829 1039 874 51 BSNL National Internet Backbo
4808 963 2028 278 CNCGROUP IP network: China169
17488 943 168 99 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 3643 3822 255 bellsouth.net, inc.
4323 1972 1097 397 Time Warner Telecom
18566 1904 362 266 Covad Communications
1785 1787 681 124 AppliedTheory Corporation
6478 1693 315 55 AT&T Worldnet Services
20115 1589 1544 634 Charter Communications
19262 1497 4943 301 Verizon Global Networks
7018 1369 7085 894 AT&T WorldNet Services
22773 1331 2897 88 Cox Communications, Inc.
11492 1280 240 15 Cable One

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 1014 798 176 KPNQwest Backbone AS
9116 539 326 30 Goldenlines main autonomous s
6830 520 1780 320 UPC Distribution Services
34984 514 106 182 Tellcom Iletisim Hizmetleri
3292 513 2062 395 TDC Tele Danmark
20940 462 135 354 Akamai Technologies European
29049 453 33 44 AzerSat LLC.
8866 444 134 26 Bulgarian Telecommunication C
12479 430 577 6 Uni2 Autonomous System
3320 424 8153 369 Deutsche Telekom AG

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 1481 273 154 TVCABLE BOGOTA
8151 1367 2685 359 Uninet S.A. de C.V.
28573 1314 991 86 Types of queries are: POCs, o
7303 926 470 152 Telecom Argentina Stet-France
6503 734 354 74 AVANTEL, S.A.
14420 670 54 91 Types of queries are: POCs, o
22047 563 310 15 Types of queries are: POCs, o
3816 523 227 100 COLOMBIA TELECOMUNICACIONES S
13489 515 258 124 Orbitel S.A. E.S.P.
11172 494 84 84 Alestra

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 894 445 11 TEDATA
24863 735 147 38 LINKdotNET AS number
15475 416 90 8 Nile Online
36992 287 331 17 Etisalat MISR
3741 268 985 228 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
33776 217 12 11 Starcomms Nigeria Limited
24835 211 78 10 RAYA Telecom - Egypt
29571 162 17 11 Ci Telecom Autonomous system
16637 153 441 87 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 3643 3822 255 bellsouth.net, inc.
23456 2483 629 1351 >>UNKNOWN<<
4323 1972 1097 397 Time Warner Telecom
18566 1904 362 266 Covad Communications
4766 1897 9502 615 Korea Telecom (KIX)
17974 1831 516 32 PT TELEKOMUNIKASI INDONESIA
1785 1787 681 124 AppliedTheory Corporation
6478 1693 315 55 AT&T Worldnet Services
20115 1589 1544 634 Charter Communications
7545 1555 301 86 TPG Internet Pty Ltd

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

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

ASN No of nets Net Savings Description
17974 1831 1799 PT TELEKOMUNIKASI INDONESIA
1785 1787 1663 AppliedTheory Corporation
18566 1904 1638 Covad Communications
6478 1693 1638 AT&T Worldnet Services
4323 1972 1575 Time Warner Telecom
7545 1555 1469 TPG Internet Pty Ltd
10620 1481 1327 TVCABLE BOGOTA
4755 1470 1304 Videsh Sanchar Nigam Ltd. Aut
4766 1897 1282 Korea Telecom (KIX)
11492 1280 1265 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
--------------------------------

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 /8:21 /9:12 /10:28 /11:80 /12:226
/13:460 /14:801 /15:1427 /16:11910 /17:6060 /18:10049
/19:19858 /20:26356 /21:26311 /22:34606 /23:33455 /24:187854
/25:371 /26:350 /27:171 /28:283 /29:172 /30:599
/31:65 /32:616

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

ASN No of nets Total ann. Description
6389 2243 3643 bellsouth.net, inc.
18566 1862 1904 Covad Communications
6478 1647 1693 AT&T Worldnet Services
10620 1371 1481 TVCABLE BOGOTA
11492 1226 1280 Cable One
23456 1223 2483 >>UNKNOWN<<
7011 1060 1159 Citizens Utilities
1785 1051 1787 AppliedTheory Corporation
4323 883 1972 Time Warner Telecom
286 874 1014 KPNQwest Backbone AS

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

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

1:279 2:63 4:20 5:1 6:3 8:354
12:1989 13:1 14:457 15:15 16:3 17:8
20:10 23:7 24:1646 27:757 31:348 32:126
33:4 34:2 37:1 38:737 40:101 41:2536
42:5 44:3 46:929 47:4 49:194 50:415
52:13 54:1 55:3 56:2 57:40 58:846
59:484 60:387 61:1238 62:977 63:1948 64:3963
65:2293 66:4182 67:1872 68:1270 69:3089 70:749
71:357 72:1916 73:3 74:2406 75:317 76:348
77:909 78:713 79:484 80:1098 81:828 82:507
83:457 84:649 85:1080 86:612 87:776 88:335
89:1583 90:204 91:3783 92:517 93:1079 94:1289
95:830 96:504 97:249 98:843 99:35 101:60
103:12 106:1 107:7 108:85 109:956 110:600
111:715 112:303 113:402 114:537 115:668 116:970
117:691 118:819 119:1135 120:308 121:680 122:1627
123:1001 124:1259 125:1228 128:263 129:179 130:164
131:573 132:109 133:19 134:219 135:48 136:215
137:143 138:306 139:124 140:484 141:239 142:405
143:401 144:480 145:54 146:445 147:217 148:588
149:243 150:172 151:186 152:291 153:178 154:3
155:396 156:194 157:353 158:135 159:387 160:317
161:207 162:282 163:163 164:504 165:372 166:516
167:433 168:729 169:153 170:795 171:77 172:1
173:1578 174:554 175:374 177:130 178:923 180:844
181:17 182:446 183:207 184:355 185:1 186:1165
187:741 188:862 189:897 190:4808 192:5821 193:4874
194:3534 195:3117 196:1236 197:19 198:3615 199:3915
200:5544 201:1497 202:8371 203:8442 204:4161 205:2330
206:2751 207:2916 208:3979 209:3473 210:2741 211:1428
212:2032 213:1783 214:734 215:69 216:4917 217:1633
218:568 219:364 220:1203 221:485 222:340 223:148

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 Sat 21 May, 2011

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

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

BGP routing table entries examined: 357743
Prefixes after maximum aggregation: 161995
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 176757
Total ASes present in the Internet Routing Table: 37632
Prefixes per ASN: 9.51
Origin-only ASes present in the Internet Routing Table: 31443
Origin ASes announcing only one prefix: 15107
Transit ASes present in the Internet Routing Table: 5101
Transit-only ASes present in the Internet Routing Table: 135
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 36
Max AS path prepend of ASN (48687) 24
Prefixes from unregistered ASNs in the Routing Table: 647
Unregistered ASNs in the Routing Table: 338
Number of 32-bit ASNs allocated by the RIRs: 1366
Number of 32-bit ASNs visible in the Routing Table: 1088
Prefixes from 32-bit ASNs in the Routing Table: 2459
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 166
Number of addresses announced to Internet: 2432900032
Equivalent to 145 /8s, 3 /16s and 27 /24s
Percentage of available address space announced: 65.6
Percentage of allocated address space announced: 65.6
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.9
Total number of prefixes smaller than registry allocations: 148733

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

Prefixes being announced by APNIC Region ASes: 89422
Total APNIC prefixes after maximum aggregation: 30028
APNIC Deaggregation factor: 2.98
Prefixes being announced from the APNIC address blocks: 85798
Unique aggregates announced from the APNIC address blocks: 36687
APNIC Region origin ASes present in the Internet Routing Table: 4453
APNIC Prefixes per ASN: 19.27
APNIC Region origin ASes announcing only one prefix: 1236
APNIC Region transit ASes present in the Internet Routing Table: 707
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 21
Number of APNIC region 32-bit ASNs visible in the Routing Table: 46
Number of APNIC addresses announced to Internet: 615312672
Equivalent to 36 /8s, 172 /16s and 237 /24s
Percentage of available APNIC address space announced: 78.0

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

Prefixes being announced by ARIN Region ASes: 140448
Total ARIN prefixes after maximum aggregation: 71554
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 112638
Unique aggregates announced from the ARIN address blocks: 45620
ARIN Region origin ASes present in the Internet Routing Table: 14381
ARIN Prefixes per ASN: 7.83
ARIN Region origin ASes announcing only one prefix: 5494
ARIN Region transit ASes present in the Internet Routing Table: 1498
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 23
Number of ARIN region 32-bit ASNs visible in the Routing Table: 12
Number of ARIN addresses announced to Internet: 801671424
Equivalent to 47 /8s, 200 /16s and 137 /24s
Percentage of available ARIN address space announced: 63.7

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

Prefixes being announced by RIPE Region ASes: 84534
Total RIPE prefixes after maximum aggregation: 48247
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 78018
Unique aggregates announced from the RIPE address blocks: 51632
RIPE Region origin ASes present in the Internet Routing Table: 15619
RIPE Prefixes per ASN: 5.00
RIPE Region origin ASes announcing only one prefix: 7813
RIPE Region transit ASes present in the Internet Routing Table: 2464
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 36
Number of RIPE region 32-bit ASNs visible in the Routing Table: 805
Number of RIPE addresses announced to Internet: 472636160
Equivalent to 28 /8s, 43 /16s and 219 /24s
Percentage of available RIPE address space announced: 76.1

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

Prefixes being announced by LACNIC Region ASes: 32829
Total LACNIC prefixes after maximum aggregation: 7512
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31866
Unique aggregates announced from the LACNIC address blocks: 16758
LACNIC Region origin ASes present in the Internet Routing Table: 1456
LACNIC Prefixes per ASN: 21.89
LACNIC Region origin ASes announcing only one prefix: 431
LACNIC Region transit ASes present in the Internet Routing Table: 266
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: 220
Number of LACNIC addresses announced to Internet: 83532288
Equivalent to 4 /8s, 250 /16s and 154 /24s
Percentage of available LACNIC address space announced: 55.3

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: 7836
Total AfriNIC prefixes after maximum aggregation: 1877
AfriNIC Deaggregation factor: 4.17
Prefixes being announced from the AfriNIC address blocks: 6175
Unique aggregates announced from the AfriNIC address blocks: 1909
AfriNIC Region origin ASes present in the Internet Routing Table: 448
AfriNIC Prefixes per ASN: 13.78
AfriNIC Region origin ASes announcing only one prefix: 133
AfriNIC Region transit ASes present in the Internet Routing Table: 100
Average AfriNIC Region AS path length visible: 4.8
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23174656
Equivalent to 1 /8s, 97 /16s and 158 /24s
Percentage of available AfriNIC address space announced: 34.5

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 2457 9494 918 Korea Telecom (KIX)
17974 1832 516 32 PT TELEKOMUNIKASI INDONESIA
7545 1556 301 87 TPG Internet Pty Ltd
4755 1472 635 169 TATA Communications formerly
24560 1153 336 184 Bharti Airtel Ltd., Telemedia
7552 1123 1064 7 Vietel Corporation
9583 1082 81 511 Sify Limited
4808 1080 2141 298 CNCGROUP IP network: China169
9829 1039 874 51 BSNL National Internet Backbo
18101 935 116 142 Reliance Infocom Ltd Internet

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 3645 3822 255 bellsouth.net, inc.
4323 1976 1081 397 Time Warner Telecom
18566 1860 354 267 Covad Communications
1785 1786 681 123 PaeTec Communications, Inc.
6478 1693 315 55 AT&T Worldnet Services
20115 1538 1540 635 Charter Communications
19262 1496 4943 300 Verizon Global Networks
7018 1365 7069 890 AT&T WorldNet Services
22773 1330 2897 88 Cox Communications, Inc.
11492 1279 240 15 Cable One

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 520 1780 321 UPC Distribution Services
34984 514 106 182 BILISIM TELEKOM
3292 460 2062 395 TDC Tele Danmark
20940 457 134 351 Akamai Technologies European
29049 453 33 44 AzerSat LLC.
8866 444 134 26 Bulgarian Telecommunication C
12479 432 577 6 Uni2 Autonomous System
3320 426 8153 371 Deutsche Telekom AG
8551 406 355 45 Bezeq International
702 395 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 1481 273 154 TVCABLE BOGOTA
8151 1375 2702 362 UniNet S.A. de C.V.
28573 1314 991 86 NET Servicos de Comunicao S.A
7303 925 470 151 Telecom Argentina Stet-France
6503 731 354 73 AVANTEL, S.A.
14420 670 54 91 CORPORACION NACIONAL DE TELEC
22047 563 310 15 VTR PUNTO NET S.A.
3816 522 227 101 Empresa Nacional de Telecomun
13489 511 254 124 Orbitel S.A. E.S.P.
11172 493 84 83 Servicios Alestra S.A de C.V

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 894 445 11 TEDATA
24863 787 147 37 LINKdotNET AS number
15475 415 90 8 Nile Online
36992 287 331 17 Etisalat MISR
3741 268 985 228 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
33776 217 12 11 Starcomms Nigeria Limited
24835 208 78 10 RAYA Telecom - Egypt
29571 163 19 12 Ci Telecom Autonomous system
16637 150 441 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 3645 3822 255 bellsouth.net, inc.
23456 2459 631 1341 32-bit ASN transition
4766 2457 9494 918 Korea Telecom (KIX)
4323 1976 1081 397 Time Warner Telecom
18566 1860 354 267 Covad Communications
17974 1832 516 32 PT TELEKOMUNIKASI INDONESIA
1785 1786 681 123 PaeTec Communications, Inc.
6478 1693 315 55 AT&T Worldnet Services
7545 1556 301 87 TPG Internet Pty Ltd
20115 1538 1540 635 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
17974 1832 1800 PT TELEKOMUNIKASI INDONESIA
1785 1786 1663 PaeTec Communications, Inc.
6478 1693 1638 AT&T Worldnet Services
18566 1860 1593 Covad Communications
4323 1976 1579 Time Warner Telecom
4766 2457 1539 Korea Telecom (KIX)
7545 1556 1469 TPG Internet Pty Ltd
10620 1481 1327 TVCABLE BOGOTA
4755 1472 1303 TATA Communications formerly
11492 1279 1264 Cable One

Complete listing at http://thyme.rand.apnic.net/current/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
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
23502 UNALLOCATED 12.44.44.0/24 7018 AT&T WorldNet Servic

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 /11:79 /12:226
/13:461 /14:793 /15:1393 /16:11769 /17:5810 /18:9731
/19:19329 /20:25643 /21:25885 /22:34217 /23:32989 /24:186103
/25:1087 /26:1274 /27:713 /28:165 /29:8 /30:2
/31:0 /32:6

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

ASN No of nets Total ann. Description
6389 2245 3645 bellsouth.net, inc.
18566 1824 1860 Covad Communications
6478 1647 1693 AT&T Worldnet Services
10620 1371 1481 TVCABLE BOGOTA
11492 1225 1279 Cable One
23456 1204 2459 32-bit ASN transition
7011 1060 1159 Citizens Utilities
1785 1051 1786 PaeTec Communications, Inc.
4323 886 1976 Time Warner Telecom
22773 846 1330 Cox Communications, Inc.

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

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

1:279 2:39 4:14 5:1 6:3 8:352
12:1985 13:1 14:457 15:15 16:3 17:8
20:10 23:7 24:1633 27:753 31:345 32:60
33:4 34:2 37:1 38:738 40:101 41:2537
42:5 44:3 46:920 47:4 49:194 50:415
52:13 55:3 56:2 57:30 58:844 59:481
60:387 61:1235 62:960 63:1935 64:3941 65:2292
66:4158 67:1846 68:1092 69:2985 70:704 71:352
72:1883 73:1 74:2351 75:303 76:340 77:870
78:709 79:464 80:1094 81:821 82:490 83:447
84:629 85:1069 86:594 87:749 88:328 89:1556
90:204 91:3771 92:516 93:1053 94:1279 95:817
96:504 97:249 98:835 99:35 101:60 103:12
106:1 107:7 108:85 109:950 110:601 111:715
112:302 113:401 114:534 115:667 116:956 117:691
118:821 119:1145 120:308 121:677 122:1627 123:1001
124:1265 125:1228 128:262 129:176 130:164 131:573
132:109 133:19 134:218 135:48 136:215 137:143
138:305 139:112 140:487 141:239 142:402 143:402
144:481 145:54 146:444 147:209 148:589 149:243
150:172 151:186 152:306 153:178 154:3 155:396
156:194 157:352 158:135 159:387 160:317 161:207
162:279 163:163 164:501 165:354 166:516 167:433
168:729 169:152 170:794 171:77 172:1 173:1566
174:551 175:374 177:128 178:918 180:844 181:17
182:446 183:207 184:272 185:1 186:1164 187:735
188:842 189:897 190:4805 192:5790 193:4854 194:3482
195:2982 196:1210 197:19 198:3584 199:3908 200:5540
201:1486 202:8357 203:8427 204:4158 205:2326 206:2730
207:2913 208:3964 209:3462 210:2736 211:1392 212:1972
213:1734 214:735 215:71 216:4899 217:1623 218:563
219:362 220:1200 221:483 222:336 223:148

End of report
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Thursday, May 19, 2011

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

* BGP Routing Table Analysis Reports *
Routing Table Report 00:00 GMT Fri 20 May, 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: 362068
Prefixes after maximum aggregation: 163306
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 176624
Total ASes present in the Internet Routing Table: 37644
Prefixes per ASN: 9.62
Origin-only ASes present in the Internet Routing Table: 31457
Origin ASes announcing only one prefix: 15059
Transit ASes present in the Internet Routing Table: 5098
Transit-only ASes present in the Internet Routing Table: 129
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 33
Max AS path prepend of ASN (48687) 24
Prefixes from unregistered ASNs in the Routing Table: 3221
Unregistered ASNs in the Routing Table: 360
Number of 32-bit ASNs allocated by the RIRs: 1362
Number of 32-bit ASNs visible in the Routing Table: 1089
Prefixes from 32-bit ASNs in the Routing Table: 2457
Special use prefixes present in the Routing Table: 78
Prefixes being announced from unallocated address space: 166
Number of addresses announced to Internet: 2433445239
Equivalent to 145 /8s, 11 /16s and 109 /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: 90.9
Total number of prefixes smaller than registry allocations: 150159

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

Prefixes being announced by APNIC Region ASes: 87472
Total APNIC prefixes after maximum aggregation: 28947
APNIC Deaggregation factor: 3.02
Prefixes being announced from the APNIC address blocks: 83918
Unique aggregates announced from the APNIC address blocks: 36703
APNIC Region origin ASes present in the Internet Routing Table: 4439
APNIC Prefixes per ASN: 18.90
APNIC Region origin ASes announcing only one prefix: 1247
APNIC Region transit ASes present in the Internet Routing Table: 700
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 21
Number of APNIC region 32-bit ASNs visible in the Routing Table: 47
Number of APNIC addresses announced to Internet: 615212625
Equivalent to 36 /8s, 171 /16s and 102 /24s
Percentage of available APNIC address space announced: 78.0

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

Prefixes being announced by ARIN Region ASes: 143394
Total ARIN prefixes after maximum aggregation: 73596
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 115332
Unique aggregates announced from the ARIN address blocks: 45545
ARIN Region origin ASes present in the Internet Routing Table: 14398
ARIN Prefixes per ASN: 8.01
ARIN Region origin ASes announcing only one prefix: 5482
ARIN Region transit ASes present in the Internet Routing Table: 1482
Average ARIN Region AS path length visible: 4.1
Max ARIN Region AS path length visible: 22
Number of ARIN region 32-bit ASNs visible in the Routing Table: 12
Number of ARIN addresses announced to Internet: 801847064
Equivalent to 47 /8s, 203 /16s and 55 /24s
Percentage of available ARIN address space announced: 63.7

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

Prefixes being announced by RIPE Region ASes: 87617
Total RIPE prefixes after maximum aggregation: 48561
RIPE Deaggregation factor: 1.80
Prefixes being announced from the RIPE address blocks: 80342
Unique aggregates announced from the RIPE address blocks: 51414
RIPE Region origin ASes present in the Internet Routing Table: 15634
RIPE Prefixes per ASN: 5.14
RIPE Region origin ASes announcing only one prefix: 7765
RIPE Region transit ASes present in the Internet Routing Table: 2474
Average RIPE Region AS path length visible: 4.2
Max RIPE Region AS path length visible: 33
Number of RIPE region 32-bit ASNs visible in the Routing Table: 809
Number of RIPE addresses announced to Internet: 473061228
Equivalent to 28 /8s, 50 /16s and 87 /24s
Percentage of available RIPE address space announced: 76.2

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

Prefixes being announced by LACNIC Region ASes: 32934
Total LACNIC prefixes after maximum aggregation: 7543
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31943
Unique aggregates announced from the LACNIC address blocks: 16755
LACNIC Region origin ASes present in the Internet Routing Table: 1455
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: 265
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 20
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 216
Number of LACNIC addresses announced to Internet: 83524872
Equivalent to 4 /8s, 250 /16s and 125 /24s
Percentage of available LACNIC address space announced: 55.3

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: 7892
Total AfriNIC prefixes after maximum aggregation: 1882
AfriNIC Deaggregation factor: 4.19
Prefixes being announced from the AfriNIC address blocks: 6209
Unique aggregates announced from the AfriNIC address blocks: 1911
AfriNIC Region origin ASes present in the Internet Routing Table: 448
AfriNIC Prefixes per ASN: 13.86
AfriNIC Region origin ASes announcing only one prefix: 134
AfriNIC Region transit ASes present in the Internet Routing Table: 102
Average AfriNIC Region AS path length visible: 4.3
Max AfriNIC Region AS path length visible: 26
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23084032
Equivalent to 1 /8s, 96 /16s and 60 /24s
Percentage of available AfriNIC address space announced: 34.4

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 1893 9485 613 Korea Telecom (KIX)
17974 1830 516 32 PT TELEKOMUNIKASI INDONESIA
7545 1554 301 85 TPG Internet Pty Ltd
4755 1469 374 166 Videsh Sanchar Nigam Ltd. Aut
24560 1153 336 184 Bharti Airtel Ltd.
7552 1124 1064 7 Vietel Corporation
9583 1075 79 508 Sify Limited
9829 1039 874 51 BSNL National Internet Backbo
4808 962 2028 278 CNCGROUP IP network: China169
17488 943 168 99 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 3645 3822 255 bellsouth.net, inc.
4323 1976 1097 397 Time Warner Telecom
18566 1853 358 255 Covad Communications
1785 1787 681 124 AppliedTheory Corporation
6478 1688 314 54 AT&T Worldnet Services
20115 1590 1544 635 Charter Communications
19262 1497 4943 301 Verizon Global Networks
7018 1372 7085 897 AT&T WorldNet Services
22773 1330 2897 88 Cox Communications, Inc.
11492 1279 240 15 Cable One

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 1014 798 176 KPNQwest Backbone AS
9116 539 326 30 Goldenlines main autonomous s
6830 520 1780 320 UPC Distribution Services
3292 513 2062 395 TDC Tele Danmark
34984 512 106 182 Tellcom Iletisim Hizmetleri
20940 462 135 354 Akamai Technologies European
29049 453 33 44 AzerSat LLC.
8866 444 134 26 Bulgarian Telecommunication C
12479 429 577 6 Uni2 Autonomous System
3320 424 8153 369 Deutsche Telekom AG

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 1481 273 154 TVCABLE BOGOTA
8151 1370 2683 359 Uninet S.A. de C.V.
28573 1314 991 86 Types of queries are: POCs, o
7303 925 470 151 Telecom Argentina Stet-France
6503 733 354 74 AVANTEL, S.A.
14420 668 54 90 Types of queries are: POCs, o
22047 556 310 15 Types of queries are: POCs, o
3816 523 227 100 COLOMBIA TELECOMUNICACIONES S
13489 511 254 116 Orbitel S.A. E.S.P.
27947 496 53 46 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 894 445 11 TEDATA
24863 788 147 38 LINKdotNET AS number
15475 416 90 8 Nile Online
36992 288 331 17 Etisalat MISR
3741 268 985 228 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
24835 219 78 10 RAYA Telecom - Egypt
33776 217 12 11 Starcomms Nigeria Limited
29571 162 17 11 Ci Telecom Autonomous system
16637 153 441 87 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 3645 3822 255 bellsouth.net, inc.
23456 2457 631 1341 >>UNKNOWN<<
4323 1976 1097 397 Time Warner Telecom
4766 1893 9485 613 Korea Telecom (KIX)
18566 1853 358 255 Covad Communications
17974 1830 516 32 PT TELEKOMUNIKASI INDONESIA
1785 1787 681 124 AppliedTheory Corporation
6478 1688 314 54 AT&T Worldnet Services
20115 1590 1544 635 Charter Communications
7545 1554 301 85 TPG Internet Pty Ltd

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

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

ASN No of nets Net Savings Description
17974 1830 1798 PT TELEKOMUNIKASI INDONESIA
1785 1787 1663 AppliedTheory Corporation
6478 1688 1634 AT&T Worldnet Services
18566 1853 1598 Covad Communications
4323 1976 1579 Time Warner Telecom
7545 1554 1469 TPG Internet Pty Ltd
10620 1481 1327 TVCABLE BOGOTA
4755 1469 1303 Videsh Sanchar Nigam Ltd. Aut
4766 1893 1280 Korea Telecom (KIX)
11492 1279 1264 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
32567 UNALLOCATED 12.25.107.0/24 4323 Time Warner Telecom
26973 UNALLOCATED 12.39.152.0/24 1239 Sprint
26973 UNALLOCATED 12.39.154.0/23 1239 Sprint
26973 UNALLOCATED 12.39.155.0/24 1239 Sprint
26973 UNALLOCATED 12.39.159.0/24 1239 Sprint
25639 UNALLOCATED 12.41.169.0/24 7018 AT&T WorldNet Servic
13317 UNALLOCATED 12.44.10.0/24 7018 AT&T WorldNet Servic
23502 UNALLOCATED 12.44.44.0/24 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)
-----------------------------------------------------------

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

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

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 /11:80 /12:226
/13:461 /14:801 /15:1427 /16:11907 /17:6061 /18:10028
/19:19862 /20:26370 /21:26312 /22:34636 /23:33470 /24:187732
/25:377 /26:350 /27:171 /28:286 /29:172 /30:599
/31:65 /32:615

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

ASN No of nets Total ann. Description
6389 2245 3645 bellsouth.net, inc.
18566 1812 1853 Covad Communications
6478 1642 1688 AT&T Worldnet Services
10620 1371 1481 TVCABLE BOGOTA
11492 1225 1279 Cable One
23456 1209 2457 >>UNKNOWN<<
7011 1060 1159 Citizens Utilities
1785 1051 1787 AppliedTheory Corporation
4323 887 1976 Time Warner Telecom
286 874 1014 KPNQwest Backbone AS

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

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

1:270 2:62 4:18 5:1 6:3 8:354
12:1992 13:1 14:457 15:15 16:3 17:8
20:10 23:7 24:1654 27:758 31:347 32:126
33:4 34:2 37:1 38:739 40:101 41:2532
42:5 44:3 46:923 47:4 49:193 50:411
52:13 55:5 56:2 57:40 58:847 59:484
60:387 61:1236 62:977 63:1948 64:3959 65:2294
66:4171 67:1871 68:1270 69:3096 70:750 71:357
72:1914 73:3 74:2407 75:323 76:350 77:907
78:713 79:484 80:1107 81:826 82:508 83:458
84:649 85:1080 86:612 87:776 88:331 89:1581
90:204 91:3780 92:517 93:1079 94:1275 95:829
96:504 97:249 98:842 99:35 101:59 103:12
106:1 107:7 108:85 109:953 110:603 111:715
112:302 113:401 114:539 115:668 116:971 117:691
118:822 119:1133 120:308 121:679 122:1626 123:1000
124:1265 125:1227 128:263 129:179 130:164 131:570
132:108 133:19 134:218 135:49 136:215 137:143
138:305 139:124 140:483 141:239 142:405 143:406
144:482 145:54 146:443 147:219 148:592 149:243
150:172 151:186 152:312 153:178 154:3 155:396
156:194 157:353 158:133 159:387 160:317 161:207
162:279 163:163 164:501 165:372 166:512 167:431
168:729 169:154 170:794 171:77 172:1 173:1583
174:553 175:374 177:120 178:920 180:841 181:17
182:445 183:207 184:353 185:1 186:1171 187:735
188:854 189:897 190:4804 192:5819 193:4876 194:3527
195:3115 196:1214 197:19 198:3604 199:3914 200:5539
201:1495 202:8377 203:8433 204:4163 205:2330 206:2751
207:2920 208:3978 209:3477 210:2742 211:1428 212:2039
213:1779 214:729 215:71 216:4882 217:1634 218:567
219:362 220:1203 221:486 222:341 223:148

End of report
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