Routing Table Report 00:00 GMT Thu 12 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: 361767
Prefixes after maximum aggregation: 162852
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 175906
Total ASes present in the Internet Routing Table: 37541
Prefixes per ASN: 9.64
Origin-only ASes present in the Internet Routing Table: 31513
Origin ASes announcing only one prefix: 15048
Transit ASes present in the Internet Routing Table: 4959
Transit-only ASes present in the Internet Routing Table: 118
Average AS path length visible in the Internet Routing Table: 3.9
Max AS path length visible: 25
Max AS path prepend of ASN (36992) 22
Prefixes from unregistered ASNs in the Routing Table: 3133
Unregistered ASNs in the Routing Table: 333
Number of 32-bit ASNs allocated by the RIRs: 1336
Number of 32-bit ASNs visible in the Routing Table: 1069
Prefixes from 32-bit ASNs in the Routing Table: 2410
Special use prefixes present in the Routing Table: 78
Prefixes being announced from unallocated address space: 159
Number of addresses announced to Internet: 2426315503
Equivalent to 144 /8s, 158 /16s and 162 /24s
Percentage of available address space announced: 65.5
Percentage of allocated address space announced: 65.5
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.7
Total number of prefixes smaller than registry allocations: 150010
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87434
Total APNIC prefixes after maximum aggregation: 28879
APNIC Deaggregation factor: 3.03
Prefixes being announced from the APNIC address blocks: 83865
Unique aggregates announced from the APNIC address blocks: 36597
APNIC Region origin ASes present in the Internet Routing Table: 4425
APNIC Prefixes per ASN: 18.95
APNIC Region origin ASes announcing only one prefix: 1246
APNIC Region transit ASes present in the Internet Routing Table: 687
Average APNIC Region AS path length visible: 4.2
Max APNIC Region AS path length visible: 18
Number of APNIC region 32-bit ASNs visible in the Routing Table: 47
Number of APNIC addresses announced to Internet: 614244801
Equivalent to 36 /8s, 156 /16s and 161 /24s
Percentage of available APNIC address space announced: 77.9
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: 143612
Total ARIN prefixes after maximum aggregation: 73443
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 115583
Unique aggregates announced from the ARIN address blocks: 45358
ARIN Region origin ASes present in the Internet Routing Table: 14381
ARIN Prefixes per ASN: 8.04
ARIN Region origin ASes announcing only one prefix: 5484
ARIN Region transit ASes present in the Internet Routing Table: 1460
Average ARIN Region AS path length visible: 3.7
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: 800176152
Equivalent to 47 /8s, 177 /16s and 184 /24s
Percentage of available ARIN address space announced: 63.6
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: 87459
Total RIPE prefixes after maximum aggregation: 48414
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 80134
Unique aggregates announced from the RIPE address blocks: 51075
RIPE Region origin ASes present in the Internet Routing Table: 15599
RIPE Prefixes per ASN: 5.14
RIPE Region origin ASes announcing only one prefix: 7750
RIPE Region transit ASes present in the Internet Routing Table: 2395
Average RIPE Region AS path length visible: 3.8
Max RIPE Region AS path length visible: 22
Number of RIPE region 32-bit ASNs visible in the Routing Table: 791
Number of RIPE addresses announced to Internet: 468996212
Equivalent to 27 /8s, 244 /16s and 80 /24s
Percentage of available RIPE address space announced: 75.6
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: 32752
Total LACNIC prefixes after maximum aggregation: 7527
LACNIC Deaggregation factor: 4.35
Prefixes being announced from the LACNIC address blocks: 31810
Unique aggregates announced from the LACNIC address blocks: 16685
LACNIC Region origin ASes present in the Internet Routing Table: 1451
LACNIC Prefixes per ASN: 21.92
LACNIC Region origin ASes announcing only one prefix: 433
LACNIC Region transit ASes present in the Internet Routing Table: 263
Average LACNIC Region AS path length visible: 4.1
Max LACNIC Region AS path length visible: 18
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 214
Number of LACNIC addresses announced to Internet: 83335688
Equivalent to 4 /8s, 247 /16s and 154 /24s
Percentage of available LACNIC address space announced: 55.2
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: 7804
Total AfriNIC prefixes after maximum aggregation: 1869
AfriNIC Deaggregation factor: 4.18
Prefixes being announced from the AfriNIC address blocks: 6128
Unique aggregates announced from the AfriNIC address blocks: 1919
AfriNIC Region origin ASes present in the Internet Routing Table: 445
AfriNIC Prefixes per ASN: 13.77
AfriNIC Region origin ASes announcing only one prefix: 135
AfriNIC Region transit ASes present in the Internet Routing Table: 100
Average AfriNIC Region AS path length visible: 4.0
Max AfriNIC Region AS path length visible: 25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23104768
Equivalent to 1 /8s, 96 /16s and 141 /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 1891 9485 612 Korea Telecom (KIX)
17974 1825 508 33 PT TELEKOMUNIKASI INDONESIA
7545 1546 301 86 TPG Internet Pty Ltd
4755 1459 378 165 Videsh Sanchar Nigam Ltd. Aut
24560 1151 336 184 Bharti Airtel Ltd.
7552 1105 1064 7 Vietel Corporation
9583 1080 80 511 Sify Limited
9829 1039 874 51 BSNL National Internet Backbo
17488 958 165 100 Hathway IP Over Cable Interne
18101 934 116 140 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 3645 3822 256 bellsouth.net, inc.
4323 2563 1104 400 Time Warner Telecom
18566 1800 355 232 Covad Communications
1785 1776 681 125 AppliedTheory Corporation
6478 1669 313 52 AT&T Worldnet Services
20115 1587 1543 634 Charter Communications
19262 1499 4933 299 Verizon Global Networks
7018 1359 6943 888 AT&T WorldNet Services
22773 1329 2897 87 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 1028 798 176 KPNQwest Backbone AS
9116 540 326 30 Goldenlines main autonomous s
6830 520 1780 321 UPC Distribution Services
3292 517 1997 391 TDC Tele Danmark
34984 511 106 183 Tellcom Iletisim Hizmetleri
20940 451 132 345 Akamai Technologies European
8866 443 134 26 Bulgarian Telecommunication C
29049 443 33 43 AzerSat LLC.
8402 425 320 32 Corbina telecom
12479 425 577 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 1467 270 155 TVCABLE BOGOTA
8151 1371 2681 361 Uninet S.A. de C.V.
28573 1307 990 86 Types of queries are: POCs, o
7303 930 470 151 Telecom Argentina Stet-France
6503 734 354 74 AVANTEL, S.A.
14420 667 54 91 Types of queries are: POCs, o
22047 554 310 15 Types of queries are: POCs, o
3816 519 226 98 COLOMBIA TELECOMUNICACIONES S
11172 495 100 83 Alestra
27947 495 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 783 147 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 207 78 10 RAYA Telecom - Egypt
33776 200 12 11 Starcomms Nigeria Limited
29571 162 17 11 Ci Telecom Autonomous system
16637 152 441 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 3645 3822 256 bellsouth.net, inc.
4323 2563 1104 400 Time Warner Telecom
23456 2410 682 1312 >>UNKNOWN<<
4766 1891 9485 612 Korea Telecom (KIX)
17974 1825 508 33 PT TELEKOMUNIKASI INDONESIA
18566 1800 355 232 Covad Communications
1785 1776 681 125 AppliedTheory Corporation
6478 1669 313 52 AT&T Worldnet Services
20115 1587 1543 634 Charter Communications
7545 1546 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
4323 2563 2163 Time Warner Telecom
17974 1825 1792 PT TELEKOMUNIKASI INDONESIA
1785 1776 1651 AppliedTheory Corporation
6478 1669 1617 AT&T Worldnet Services
18566 1800 1568 Covad Communications
7545 1546 1460 TPG Internet Pty Ltd
10620 1467 1312 TVCABLE BOGOTA
4755 1459 1294 Videsh Sanchar Nigam Ltd. Aut
4766 1891 1279 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 1239 Sprint
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
31.130.240.0/21 51333 Skynet Trading SRL
31.211.184.0/21 174 Cogent Communications
31.220.136.0/21 31078 Netsign GmbH
41.222.79.0/24 36938 >>UNKNOWN<<
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 /11:79 /12:223
/13:459 /14:798 /15:1426 /16:11872 /17:6024 /18:10008
/19:19841 /20:26254 /21:26239 /22:34459 /23:33392 /24:187984
/25:375 /26:345 /27:168 /28:280 /29:180 /30:611
/31:66 /32:624
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2245 3645 bellsouth.net, inc.
18566 1762 1800 Covad Communications
6478 1623 1669 AT&T Worldnet Services
10620 1357 1467 TVCABLE BOGOTA
4323 1271 2563 Time Warner Telecom
11492 1225 1279 Cable One
23456 1180 2410 >>UNKNOWN<<
7011 1062 1162 Citizens Utilities
1785 1051 1776 AppliedTheory Corporation
286 888 1028 KPNQwest Backbone AS
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:264 2:72 4:18 5:1 6:3 8:354
12:1988 13:1 14:453 15:15 16:3 17:8
20:10 23:6 24:1653 27:747 31:315 32:126
33:3 34:2 37:1 38:766 40:101 41:2463
42:5 44:3 46:905 47:4 49:172 50:395
52:13 55:5 56:2 57:40 58:849 59:485
60:387 61:1257 62:1003 63:1939 64:3962 65:2301
66:4343 67:1902 68:1271 69:3084 70:742 71:356
72:1916 73:3 74:2401 75:322 76:350 77:908
78:693 79:481 80:1101 81:825 82:508 83:459
84:645 85:1085 86:610 87:772 88:333 89:1634
90:200 91:3731 92:513 93:1083 94:1280 95:820
96:482 97:255 98:847 99:35 101:70 103:12
106:1 107:6 108:85 109:948 110:584 111:710
112:321 113:401 114:535 115:665 116:962 117:680
118:818 119:1136 120:305 121:679 122:1619 123:1080
124:1255 125:1223 128:260 129:170 130:165 131:570
132:110 133:19 134:219 135:49 136:214 137:143
138:304 139:125 140:481 141:240 142:403 143:399
144:488 145:53 146:441 147:217 148:580 149:243
150:171 151:187 152:312 153:179 154:3 155:395
156:194 157:347 158:131 159:387 160:315 161:206
162:279 163:163 164:499 165:368 166:514 167:429
168:725 169:154 170:793 171:76 172:1 173:1569
174:554 175:370 177:118 178:910 180:828 181:20
182:437 183:208 184:343 185:1 186:1159 187:761
188:846 189:904 190:4803 192:5828 193:4871 194:3530
195:3111 196:1225 197:16 198:3595 199:3909 200:5537
201:1513 202:8367 203:8481 204:4158 205:2329 206:2769
207:3054 208:3989 209:3500 210:2733 211:1413 212:2034
213:1777 214:732 215:69 216:4914 217:1671 218:570
219:372 220:1207 221:485 222:342 223:146
End of report
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