Weekly Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri Nov 19 19:10:00 UTC 2010
This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
The posting is sent to APOPS, NANOG, AfNOG, AusNOG, SANOG, PacNOG, LacNOG,
CaribNOG and the RIPE Routing Working Group.
Daily listings are sent to bgp-stats at lists.apnic.net
For historical data, please see http://thyme.rand.apnic.net.
If you have any comments please contact Philip Smith <pfs at cisco.com>.
Routing Table Report 04:00 +10GMT Sat 20 Nov, 2010
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 337920
Prefixes after maximum aggregation: 153662
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 165745
Total ASes present in the Internet Routing Table: 35314
Prefixes per ASN: 9.57
Origin-only ASes present in the Internet Routing Table: 30423
Origin ASes announcing only one prefix: 14892
Transit ASes present in the Internet Routing Table: 4891
Transit-only ASes present in the Internet Routing Table: 118
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 31
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 374
Unregistered ASNs in the Routing Table: 168
Number of 32-bit ASNs allocated by the RIRs: 901
Prefixes from 32-bit ASNs in the Routing Table: 4
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 198
Number of addresses announced to Internet: 2301671776
Equivalent to 137 /8s, 48 /16s and 185 /24s
Percentage of available address space announced: 62.1
Percentage of allocated address space announced: 65.4
Percentage of available address space allocated: 95.0
Percentage of address space in use by end-sites: 85.6
Total number of prefixes smaller than registry allocations: 139129
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 82883
Total APNIC prefixes after maximum aggregation: 28130
APNIC Deaggregation factor: 2.95
Prefixes being announced from the APNIC address blocks: 79793
Unique aggregates announced from the APNIC address blocks: 34792
APNIC Region origin ASes present in the Internet Routing Table: 4240
APNIC Prefixes per ASN: 18.82
APNIC Region origin ASes announcing only one prefix: 1191
APNIC Region transit ASes present in the Internet Routing Table: 683
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 564159264
Equivalent to 33 /8s, 160 /16s and 99 /24s
Percentage of available APNIC address space announced: 76.4
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, 42/8, 43/8, 49/8,
58/8, 59/8, 60/8, 61/8, 101/8, 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: 137691
Total ARIN prefixes after maximum aggregation: 71142
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 108854
Unique aggregates announced from the ARIN address blocks: 43801
ARIN Region origin ASes present in the Internet Routing Table: 14049
ARIN Prefixes per ASN: 7.75
ARIN Region origin ASes announcing only one prefix: 5384
ARIN Region transit ASes present in the Internet Routing Table: 1492
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 23
Number of ARIN addresses announced to Internet: 740892160
Equivalent to 44 /8s, 41 /16s and 30 /24s
Percentage of available ARIN address space announced: 63.1
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, 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, 54/8,
55/8, 56/8, 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, 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: 77905
Total RIPE prefixes after maximum aggregation: 45024
RIPE Deaggregation factor: 1.73
Prefixes being announced from the RIPE address blocks: 71405
Unique aggregates announced from the RIPE address blocks: 46773
RIPE Region origin ASes present in the Internet Routing Table: 15029
RIPE Prefixes per ASN: 4.75
RIPE Region origin ASes announcing only one prefix: 7745
RIPE Region transit ASes present in the Internet Routing Table: 2327
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 30
Number of RIPE addresses announced to Internet: 444617152
Equivalent to 26 /8s, 128 /16s and 81 /24s
Percentage of available RIPE address space announced: 77.9
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, 196608-197631
RIPE Address Blocks 2/8, 25/8, 31/8, 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,
193/8, 194/8, 195/8, 212/8, 213/8, 217/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 31585
Total LACNIC prefixes after maximum aggregation: 7363
LACNIC Deaggregation factor: 4.29
Prefixes being announced from the LACNIC address blocks: 30236
Unique aggregates announced from the LACNIC address blocks: 15369
LACNIC Region origin ASes present in the Internet Routing Table: 1392
LACNIC Prefixes per ASN: 21.72
LACNIC Region origin ASes announcing only one prefix: 437
LACNIC Region transit ASes present in the Internet Routing Table: 245
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 77683968
Equivalent to 4 /8s, 161 /16s and 93 /24s
Percentage of available LACNIC address space announced: 57.9
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
262144-263167 plus ERX transfers
LACNIC Address Blocks 177/8, 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: 7617
Total AfriNIC prefixes after maximum aggregation: 1883
AfriNIC Deaggregation factor: 4.05
Prefixes being announced from the AfriNIC address blocks: 5929
Unique aggregates announced from the AfriNIC address blocks: 1759
AfriNIC Region origin ASes present in the Internet Routing Table: 422
AfriNIC Prefixes per ASN: 14.05
AfriNIC Region origin ASes announcing only one prefix: 135
AfriNIC Region transit ASes present in the Internet Routing Table: 93
Average AfriNIC Region AS path length visible: 5.2
Max AfriNIC Region AS path length visible: 31
Number of AfriNIC addresses announced to Internet: 21482496
Equivalent to 1 /8s, 71 /16s and 204 /24s
Percentage of available AfriNIC address space announced: 42.7
AfriNIC AS Blocks 36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks 41/8, 105/8, 197/8,
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4766 1874 9470 520 Korea Telecom (KIX)
7545 1437 299 78 TPG Internet Pty Ltd
4755 1389 383 157 TATA Communications formerly
17488 1365 157 115 Hathway IP Over Cable Interne
17974 1312 427 27 PT TELEKOMUNIKASI INDONESIA
24560 1057 309 168 Bharti Airtel Ltd., Telemedia
9583 1028 75 487 Sify Limited
4808 983 1722 267 CNCGROUP IP network: China169
18101 906 116 140 Reliance Infocom Ltd Internet
9829 835 695 30 BSNL National Internet Backbo
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 3748 3906 277 bellsouth.net, inc.
4323 2653 1104 402 Time Warner Telecom
19262 1838 4866 283 Verizon Global Networks
1785 1802 697 130 PaeTec Communications, Inc.
20115 1512 1532 640 Charter Communications
7018 1406 5659 900 AT&T WorldNet Services
6478 1402 283 104 AT&T Worldnet Services
2386 1310 556 929 AT&T Data Communications Serv
11492 1258 233 66 Cable One
22773 1252 2863 69 Cox Communications, Inc.
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
3292 446 2026 388 TDC Tele Danmark
8866 435 133 25 Bulgarian Telecommunication C
8551 400 353 46 Bezeq International
34984 397 92 191 BILISIM TELEKOM
702 396 1865 310 UUNET - Commercial IP service
3301 382 1696 336 TeliaNet Sweden
3320 379 7316 332 Deutsche Telekom AG
12479 378 576 5 Uni2 Autonomous System
30890 374 79 208 Evolva Telecom
31148 354 18 85 FreeNet ISP
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
6503 2011 277 361 AVANTEL, S.A.
8151 1345 2623 366 UniNet S.A. de C.V.
10620 1336 249 156 TVCABLE BOGOTA
28573 1164 928 84 NET Servicos de Comunicao S.A
7303 827 440 105 Telecom Argentina Stet-France
14420 572 48 77 CORPORACION NACIONAL DE TELEC
22047 563 310 15 VTR PUNTO NET S.A.
3816 487 212 95 Empresa Nacional de Telecomun
7738 478 922 30 Telecomunicacoes da Bahia S.A
14117 451 32 29 Telefonica del Sur 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 1068 445 10 TEDATA
24863 741 147 39 LINKdotNET AS number
36992 652 278 160 Etisalat MISR
3741 265 923 227 The Internet Solution
6713 203 199 12 Itissalat Al-MAGHRIB
29571 200 19 11 Ci Telecom Autonomous system
2018 197 277 64 Tertiary Education Network
33776 195 12 14 Starcomms Nigeria Limited
24835 193 78 10 RAYA Telecom - Egypt
16637 152 440 89 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 3748 3906 277 bellsouth.net, inc.
4323 2653 1104 402 Time Warner Telecom
6503 2011 277 361 AVANTEL, S.A.
4766 1874 9470 520 Korea Telecom (KIX)
19262 1838 4866 283 Verizon Global Networks
1785 1802 697 130 PaeTec Communications, Inc.
20115 1512 1532 640 Charter Communications
7545 1437 299 78 TPG Internet Pty Ltd
7018 1406 5659 900 AT&T WorldNet Services
6478 1402 283 104 AT&T Worldnet Services
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 2653 2251 Time Warner Telecom
1785 1802 1672 PaeTec Communications, Inc.
6503 2011 1650 AVANTEL, S.A.
19262 1838 1555 Verizon Global Networks
7545 1437 1359 TPG Internet Pty Ltd
4766 1874 1354 Korea Telecom (KIX)
6478 1402 1298 AT&T Worldnet Services
17974 1312 1285 PT TELEKOMUNIKASI INDONESIA
17488 1365 1250 Hathway IP Over Cable Interne
4755 1389 1232 TATA Communications formerly
Complete listing at http://thyme.rand.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
13329 UNALLOCATED 8.19.99.0/24 3356 Level 3 Communicatio
33257 UNALLOCATED 8.20.94.0/24 3356 Level 3 Communicatio
12235 UNALLOCATED 8.28.128.0/20 40498 New Mexico Lambda Ra
23347 UNALLOCATED 8.225.222.0/24 3356 Level 3 Communicatio
16927 UNALLOCATED 12.0.252.0/23 7018 AT&T WorldNet Servic
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
Complete listing at http://thyme.rand.apnic.net/current/data-badAS
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
31.0.0.0/16 12654 RIPE NCC RIS Project
31.1.0.0/21 12654 RIPE NCC RIS Project
31.1.24.0/24 12654 RIPE NCC RIS Project
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
45.127.0.0/16 13767 NetworkTwo Communications Gro
46.22.0.0/20 30910 TAGNet Autonomous System
46.182.16.0/21 13270 DDKOM Autonomous System
46.187.0.0/17 42420 Internet Center Ltd.
62.61.220.0/24 24974 Tachyon Europe BV - Wireless
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 /8:19 /9:10 /10:25 /11:69 /12:207
/13:423 /14:750 /15:1351 /16:11398 /17:5576 /18:9342
/19:18637 /20:23989 /21:24018 /22:31685 /23:30550 /24:177021
/25:995 /26:1087 /27:586 /28:161 /29:12 /30:2
/31:0 /32:7
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2313 3748 bellsouth.net, inc.
6503 1763 2011 AVANTEL, S.A.
4323 1432 2653 Time Warner Telecom
6478 1361 1402 AT&T Worldnet Services
10620 1228 1336 TVCABLE BOGOTA
11492 1215 1258 Cable One
1785 1080 1802 PaeTec Communications, Inc.
18566 1073 1092 Covad Communications
7011 1059 1160 Citizens Utilities
8452 961 1068 TEDATA
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:99 2:15 4:13 8:314 12:2023 13:6
14:58 15:18 16:3 17:8 20:9 24:1413
27:443 31:1 32:61 33:8 34:2 36:1
38:718 40:101 41:2631 42:1 44:3 46:262
47:10 49:16 50:7 52:12 55:6 56:2
57:29 58:848 59:504 60:500 61:1138 62:1006
63:1953 64:3724 65:2328 66:4077 67:1810 68:1126
69:2893 70:717 71:381 72:1917 73:2 74:2278
75:294 76:327 77:865 78:672 79:429 80:1059
81:778 82:499 83:439 84:679 85:1015 86:483
87:699 88:331 89:1571 90:121 91:3202 92:448
93:998 94:1092 95:710 96:404 97:228 98:674
99:33 101:3 107:1 108:69 109:774 110:417
111:655 112:308 113:317 114:477 115:626 116:1130
117:660 118:572 119:1010 120:168 121:713 122:1599
123:963 124:1235 125:1272 128:228 129:152 130:172
131:554 132:239 133:20 134:209 135:46 136:204
137:143 138:284 139:108 140:475 141:195 142:348
143:524 144:503 145:54 146:430 147:169 148:671
149:331 150:149 151:231 152:294 153:175 154:3
155:363 156:167 157:342 158:121 159:366 160:311
161:199 162:276 163:166 164:435 165:331 166:466
167:429 168:702 169:150 170:719 171:63 172:2
173:1109 174:439 175:250 176:1 178:657 180:702
182:256 183:244 184:182 186:813 187:881 188:887
189:1590 190:4225 192:5775 193:4795 194:3466 195:2872
196:1185 197:1 198:3538 199:3644 200:5520 201:1640
202:8224 203:8325 204:4036 205:2346 206:2559 207:3023
208:3875 209:3457 210:2539 211:1296 212:1795 213:1712
214:693 215:63 216:4745 217:1604 218:565 219:401
220:1222 221:422 222:337 223:77
End of report
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