Weekly Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri Oct 8 19:12:02 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.apnic.net.
If you have any comments please contact Philip Smith <pfs at cisco.com>.
Routing Table Report 04:00 +10GMT Sat 09 Oct, 2010
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 332924
Prefixes after maximum aggregation: 152886
Deaggregation factor: 2.18
Unique aggregates announced to Internet: 163608
Total ASes present in the Internet Routing Table: 34937
Prefixes per ASN: 9.53
Origin-only ASes present in the Internet Routing Table: 30306
Origin ASes announcing only one prefix: 14711
Transit ASes present in the Internet Routing Table: 4631
Transit-only ASes present in the Internet Routing Table: 102
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 24
Max AS path prepend of ASN (41664) 21
Prefixes from unregistered ASNs in the Routing Table: 3825
Unregistered ASNs in the Routing Table: 1691
Number of 32-bit ASNs allocated by the RIRs: 809
Prefixes from 32-bit ASNs in the Routing Table: 1141
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 217
Number of addresses announced to Internet: 2278375680
Equivalent to 135 /8s, 205 /16s and 65 /24s
Percentage of available address space announced: 61.5
Percentage of allocated address space announced: 65.6
Percentage of available address space allocated: 93.7
Percentage of address space in use by end-sites: 85.1
Total number of prefixes smaller than registry allocations: 136876
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 81350
Total APNIC prefixes after maximum aggregation: 27868
APNIC Deaggregation factor: 2.92
Prefixes being announced from the APNIC address blocks: 78281
Unique aggregates announced from the APNIC address blocks: 34323
APNIC Region origin ASes present in the Internet Routing Table: 4200
APNIC Prefixes per ASN: 18.64
APNIC Region origin ASes announcing only one prefix: 1172
APNIC Region transit ASes present in the Internet Routing Table: 647
Average APNIC Region AS path length visible: 3.7
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 551177312
Equivalent to 32 /8s, 218 /16s and 76 /24s
Percentage of available APNIC address space announced: 78.2
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, 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: 135954
Total ARIN prefixes after maximum aggregation: 70173
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 108553
Unique aggregates announced from the ARIN address blocks: 43351
ARIN Region origin ASes present in the Internet Routing Table: 13936
ARIN Prefixes per ASN: 7.79
ARIN Region origin ASes announcing only one prefix: 5326
ARIN Region transit ASes present in the Internet Routing Table: 1381
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 22
Number of ARIN addresses announced to Internet: 737000992
Equivalent to 43 /8s, 237 /16s and 190 /24s
Percentage of available ARIN address space announced: 62.8
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: 76620
Total RIPE prefixes after maximum aggregation: 44371
RIPE Deaggregation factor: 1.73
Prefixes being announced from the RIPE address blocks: 70070
Unique aggregates announced from the RIPE address blocks: 45843
RIPE Region origin ASes present in the Internet Routing Table: 14868
RIPE Prefixes per ASN: 4.71
RIPE Region origin ASes announcing only one prefix: 7661
RIPE Region transit ASes present in the Internet Routing Table: 2235
Average RIPE Region AS path length visible: 3.9
Max RIPE Region AS path length visible: 24
Number of RIPE addresses announced to Internet: 440693376
Equivalent to 26 /8s, 68 /16s and 114 /24s
Percentage of available RIPE address space announced: 77.3
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, 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: 30164
Total LACNIC prefixes after maximum aggregation: 7163
LACNIC Deaggregation factor: 4.21
Prefixes being announced from the LACNIC address blocks: 28958
Unique aggregates announced from the LACNIC address blocks: 15115
LACNIC Region origin ASes present in the Internet Routing Table: 1361
LACNIC Prefixes per ASN: 21.28
LACNIC Region origin ASes announcing only one prefix: 429
LACNIC Region transit ASes present in the Internet Routing Table: 235
Average LACNIC Region AS path length visible: 3.9
Max LACNIC Region AS path length visible: 17
Number of LACNIC addresses announced to Internet: 76059264
Equivalent to 4 /8s, 136 /16s and 146 /24s
Percentage of available LACNIC address space announced: 56.7
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: 7442
Total AfriNIC prefixes after maximum aggregation: 1892
AfriNIC Deaggregation factor: 3.93
Prefixes being announced from the AfriNIC address blocks: 5735
Unique aggregates announced from the AfriNIC address blocks: 1696
AfriNIC Region origin ASes present in the Internet Routing Table: 406
AfriNIC Prefixes per ASN: 14.13
AfriNIC Region origin ASes announcing only one prefix: 123
AfriNIC Region transit ASes present in the Internet Routing Table: 92
Average AfriNIC Region AS path length visible: 3.8
Max AfriNIC Region AS path length visible: 17
Number of AfriNIC addresses announced to Internet: 20856320
Equivalent to 1 /8s, 62 /16s and 62 /24s
Percentage of available AfriNIC address space announced: 62.2
AfriNIC AS Blocks 36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks 41/8, 197/8,
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4766 1865 9437 510 Korea Telecom (KIX)
7545 1412 297 82 TPG Internet Pty Ltd
4755 1367 380 158 TATA Communications formerly
17488 1360 156 122 Hathway IP Over Cable Interne
17974 1258 302 79 PT TELEKOMUNIKASI INDONESIA
24560 1045 303 180 Bharti Airtel Ltd., Telemedia
9583 1033 77 497 Sify Limited
4808 936 1714 261 CNCGROUP IP network: China169
18101 885 100 132 Reliance Infocom Ltd Internet
9829 816 692 33 BSNL National Internet Backbo
Complete listing at http://thyme.apnic.net/current/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3774 3667 278 bellsouth.net, inc.
4323 2612 1108 390 Time Warner Telecom
1785 1795 698 131 PaeTec Communications, Inc.
19262 1779 4833 279 Verizon Global Networks
20115 1501 1519 649 Charter Communications
7018 1468 5729 941 AT&T WorldNet Services
6478 1368 277 109 AT&T Worldnet Services
2386 1309 555 923 AT&T Data Communications Serv
11492 1222 230 71 Cable One
22773 1204 2858 61 Cox Communications, Inc.
Complete listing at http://thyme.apnic.net/current/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3292 450 2028 391 TDC Tele Danmark
8866 419 119 24 Bulgarian Telecommunication C
702 404 1869 318 UUNET - Commercial IP service
8551 402 353 46 Bezeq International
34984 379 91 186 BILISIM TELEKOM
3301 378 1688 334 TeliaNet Sweden
3320 377 7329 328 Deutsche Telekom AG
30890 374 79 203 Evolva Telecom
12479 372 576 5 Uni2 Autonomous System
31148 353 19 77 FreeNet ISP
Complete listing at http://thyme.apnic.net/current/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 1342 2571 368 UniNet S.A. de C.V.
10620 1333 247 150 TVCABLE BOGOTA
28573 1175 909 87 NET Servicos de Comunicao S.A
7303 805 440 90 Telecom Argentina Stet-France
6503 759 223 259 AVANTEL, S.A.
27947 566 64 92 Telconet S.A
22047 558 310 15 VTR PUNTO NET S.A.
14420 540 39 78 CORPORACION NACIONAL DE TELEC
3816 484 210 95 Empresa Nacional de Telecomun
7738 478 922 30 Telecomunicacoes da Bahia S.A
Complete listing at http://thyme.apnic.net/current/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8452 1046 445 10 TEDATA
24863 738 147 39 LINKdotNET AS number
36992 651 279 174 Etisalat MISR
3741 266 906 224 The Internet Solution
6713 203 199 12 Itissalat Al-MAGHRIB
29571 203 19 11 Ci Telecom Autonomous system
2018 197 277 64 Tertiary Education Network
33776 196 12 14 Starcomms Nigeria Limited
16637 170 440 92 MTN Network Solutions
24835 165 78 9 RAYA Telecom - Egypt
Complete listing at http://thyme.apnic.net/current/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3774 3667 278 bellsouth.net, inc.
4323 2612 1108 390 Time Warner Telecom
4766 1865 9437 510 Korea Telecom (KIX)
1785 1795 698 131 PaeTec Communications, Inc.
19262 1779 4833 279 Verizon Global Networks
20115 1501 1519 649 Charter Communications
7018 1468 5729 941 AT&T WorldNet Services
7545 1412 297 82 TPG Internet Pty Ltd
6478 1368 277 109 AT&T Worldnet Services
4755 1367 380 158 TATA Communications formerly
Complete listing at http://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 2612 2222 Time Warner Telecom
1785 1795 1664 PaeTec Communications, Inc.
19262 1779 1500 Verizon Global Networks
4766 1865 1355 Korea Telecom (KIX)
7545 1412 1330 TPG Internet Pty Ltd
6478 1368 1259 AT&T Worldnet Services
17488 1360 1238 Hathway IP Over Cable Interne
4755 1367 1209 TATA Communications formerly
10620 1333 1183 TVCABLE BOGOTA
17974 1258 1179 PT TELEKOMUNIKASI INDONESIA
Complete listing at http://thyme.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
40331 UNALLOCATED 8.11.167.0/24 7018 AT&T WorldNet Servic
11946 UNALLOCATED 8.12.155.0/24 40913 Quality Technology S
15040 UNALLOCATED 8.12.156.0/24 3356 Level 3 Communicatio
53317 UNALLOCATED 8.14.38.0/24 3356 Level 3 Communicatio
33084 UNALLOCATED 8.15.195.0/24 3356 Level 3 Communicatio
18826 UNALLOCATED 8.17.208.0/20 2828 XO Communications
16734 UNALLOCATED 8.18.204.0/24 26914 Global Netoptex, Inc
53562 UNALLOCATED 8.19.94.0/24 3356 Level 3 Communicatio
23200 UNALLOCATED 8.20.243.0/24 25653 Pegasus Web Technolo
22015 UNALLOCATED 8.22.137.0/24 14989 Broadview Networks
Complete listing at http://thyme.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<<
41.223.196.0/24 36990 Alkan Telecom Ltd
41.223.197.0/24 36990 Alkan Telecom Ltd
41.223.198.0/24 36990 Alkan Telecom Ltd
41.223.199.0/24 36990 Alkan Telecom Ltd
46.16.160.0/24 43584 RIPE Network Coordination Cen
Complete listing at http://thyme.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 /11:67 /12:203
/13:419 /14:733 /15:1327 /16:11300 /17:5483 /18:9304
/19:18494 /20:23668 /21:23842 /22:31149 /23:30417 /24:173673
/25:983 /26:1080 /27:564 /28:143 /29:12 /30:2
/31:0 /32:7
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2337 3774 bellsouth.net, inc.
4323 1408 2612 Time Warner Telecom
6478 1332 1368 AT&T Worldnet Services
10620 1221 1333 TVCABLE BOGOTA
11492 1179 1222 Cable One
1785 1075 1795 PaeTec Communications, Inc.
7011 1056 1156 Citizens Utilities
18566 1039 1058 Covad Communications
8452 957 1046 TEDATA
19262 905 1779 Verizon Global Networks
Complete listing at http://thyme.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:78 2:17 4:13 8:313 12:2003 13:8
14:33 15:20 16:3 17:9 20:8 24:1379
27:361 31:1 32:61 33:12 38:701 40:97
41:2509 44:3 46:151 47:11 49:4 52:12
55:5 56:2 57:30 58:830 59:501 60:480
61:1087 62:1031 63:1974 64:3738 65:2329 66:4065
67:1847 68:1146 69:2849 70:755 71:375 72:1935
73:2 74:2308 75:288 76:322 77:876 78:696
79:432 80:1042 81:818 82:502 83:459 84:687
85:1039 86:433 87:693 88:323 89:1565 90:106
91:3098 92:437 93:1027 94:1109 95:746 96:385
97:220 98:630 99:32 101:3 108:64 109:715
110:436 111:584 112:293 113:288 114:475 115:603
116:1111 117:655 118:534 119:973 120:203 121:717
122:1565 123:914 124:1230 125:1270 128:227 129:157
130:170 131:559 132:273 133:20 134:207 135:46
136:214 137:140 138:276 139:109 140:478 141:196
142:348 143:384 144:479 145:54 146:428 147:173
148:616 149:305 150:148 151:233 152:295 153:172
154:3 155:368 156:169 157:317 158:113 159:359
160:313 161:190 162:269 163:166 164:422 165:368
166:468 167:418 168:679 169:157 170:708 171:63
172:2 173:1005 174:558 175:176 176:1 177:1
178:534 180:676 181:1 182:235 183:228 184:126
186:733 187:502 188:839 189:823 190:4124 192:5770
193:4739 194:3431 195:2830 196:1192 198:3544 199:3600
200:5408 201:1579 202:8172 203:8316 204:4019 205:2319
206:2542 207:3038 208:3882 209:3482 210:2553 211:1283
212:1762 213:1716 214:667 215:66 216:4786 217:1583
218:491 219:401 220:1168 221:427 222:341 223:51
End of report
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