Weekly Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri Sep 3 18:38:23 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 04 Sep, 2010
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 330158
Prefixes after maximum aggregation: 151682
Deaggregation factor: 2.18
Unique aggregates announced to Internet: 162121
Total ASes present in the Internet Routing Table: 34721
Prefixes per ASN: 9.51
Origin-only ASes present in the Internet Routing Table: 30112
Origin ASes announcing only one prefix: 14633
Transit ASes present in the Internet Routing Table: 4609
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: 1987
Unregistered ASNs in the Routing Table: 969
Number of 32-bit ASNs allocated by the RIRs: 757
Prefixes from 32-bit ASNs in the Routing Table: 991
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 191
Number of addresses announced to Internet: 2279348416
Equivalent to 135 /8s, 220 /16s and 24 /24s
Percentage of available address space announced: 61.5
Percentage of allocated address space announced: 65.7
Percentage of available address space allocated: 93.7
Percentage of address space in use by end-sites: 84.6
Total number of prefixes smaller than registry allocations: 156259
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 80332
Total APNIC prefixes after maximum aggregation: 27557
APNIC Deaggregation factor: 2.92
Prefixes being announced from the APNIC address blocks: 77315
Unique aggregates announced from the APNIC address blocks: 34057
APNIC Region origin ASes present in the Internet Routing Table: 4177
APNIC Prefixes per ASN: 18.51
APNIC Region origin ASes announcing only one prefix: 1170
APNIC Region transit ASes present in the Internet Routing Table: 642
Average APNIC Region AS path length visible: 3.7
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 543003680
Equivalent to 32 /8s, 93 /16s and 148 /24s
Percentage of available APNIC address space announced: 77.1
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: 135713
Total ARIN prefixes after maximum aggregation: 69909
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 108391
Unique aggregates announced from the ARIN address blocks: 42744
ARIN Region origin ASes present in the Internet Routing Table: 13888
ARIN Prefixes per ASN: 7.80
ARIN Region origin ASes announcing only one prefix: 5328
ARIN Region transit ASes present in the Internet Routing Table: 1377
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 22
Number of ARIN addresses announced to Internet: 733182368
Equivalent to 43 /8s, 179 /16s and 121 /24s
Percentage of available ARIN address space announced: 62.4
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: 75380
Total RIPE prefixes after maximum aggregation: 43966
RIPE Deaggregation factor: 1.71
Prefixes being announced from the RIPE address blocks: 68844
Unique aggregates announced from the RIPE address blocks: 45168
RIPE Region origin ASes present in the Internet Routing Table: 14750
RIPE Prefixes per ASN: 4.67
RIPE Region origin ASes announcing only one prefix: 7592
RIPE Region transit ASes present in the Internet Routing Table: 2218
Average RIPE Region AS path length visible: 3.9
Max RIPE Region AS path length visible: 24
Number of RIPE addresses announced to Internet: 436878592
Equivalent to 26 /8s, 10 /16s and 61 /24s
Percentage of available RIPE address space announced: 76.6
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, 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: 30075
Total LACNIC prefixes after maximum aggregation: 7082
LACNIC Deaggregation factor: 4.25
Prefixes being announced from the LACNIC address blocks: 28605
Unique aggregates announced from the LACNIC address blocks: 15336
LACNIC Region origin ASes present in the Internet Routing Table: 1342
LACNIC Prefixes per ASN: 21.32
LACNIC Region origin ASes announcing only one prefix: 417
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: 18
Number of LACNIC addresses announced to Internet: 77005696
Equivalent to 4 /8s, 151 /16s and 3 /24s
Percentage of available LACNIC address space announced: 57.4
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: 7421
Total AfriNIC prefixes after maximum aggregation: 1872
AfriNIC Deaggregation factor: 3.96
Prefixes being announced from the AfriNIC address blocks: 5738
Unique aggregates announced from the AfriNIC address blocks: 1658
AfriNIC Region origin ASes present in the Internet Routing Table: 397
AfriNIC Prefixes per ASN: 14.45
AfriNIC Region origin ASes announcing only one prefix: 126
AfriNIC Region transit ASes present in the Internet Routing Table: 89
Average AfriNIC Region AS path length visible: 3.7
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 20221952
Equivalent to 1 /8s, 52 /16s and 144 /24s
Percentage of available AfriNIC address space announced: 60.3
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 1866 8412 500 Korea Telecom (KIX)
4755 1483 303 164 TATA Communications formerly
7545 1367 233 82 TPG Internet Pty Ltd
17488 1346 153 128 Hathway IP Over Cable Interne
17974 1206 296 82 PT TELEKOMUNIKASI INDONESIA
24560 1020 303 179 Bharti Airtel Ltd., Telemedia
9583 1017 76 490 Sify Limited
4808 933 1713 260 CNCGROUP IP network: China169
18101 844 95 126 Reliance Infocom Ltd Internet
9829 819 690 35 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 3826 3667 273 bellsouth.net, inc.
4323 2703 1107 392 Time Warner Telecom
19262 1812 4643 282 Verizon Global Networks
1785 1790 698 131 PaeTec Communications, Inc.
20115 1491 1528 651 Charter Communications
7018 1474 5734 951 AT&T WorldNet Services
6478 1332 275 109 AT&T Worldnet Services
2386 1287 554 905 AT&T Data Communications Serv
11492 1189 226 89 Cable One
22773 1181 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 448 2018 389 TDC Tele Danmark
30890 444 100 212 Evolva Telecom
702 411 1869 324 UUNET - Commercial IP service
8551 403 353 47 Bezeq International
8866 403 117 18 Bulgarian Telecommunication C
3301 374 1416 329 TeliaNet Sweden
3320 372 7328 322 Deutsche Telekom AG
34984 372 90 184 BILISIM TELEKOM
12479 352 576 5 Uni2 Autonomous System
31148 331 17 76 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 1525 3049 245 UniNet S.A. de C.V.
10620 1204 247 148 TVCABLE BOGOTA
28573 1123 863 111 NET Servicos de Comunicao S.A
6503 874 188 272 AVANTEL, S.A.
7303 795 408 102 Telecom Argentina Stet-France
14420 565 36 76 CORPORACION NACIONAL DE TELEC
22047 555 310 15 VTR PUNTO NET S.A.
3816 477 210 94 Empresa Nacional de Telecomun
7738 477 922 30 Telecomunicacoes da Bahia S.A
11172 444 99 76 Servicios Alestra S.A de C.V
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 1149 445 10 TEDATA
24863 725 147 39 LINKdotNET AS number
36992 662 279 177 Etisalat MISR
3741 266 906 224 The Internet Solution
33776 209 12 12 Starcomms Nigeria Limited
6713 203 199 12 Itissalat Al-MAGHRIB
2018 197 277 64 Tertiary Education Network
29571 193 19 11 Ci Telecom Autonomous system
24835 190 78 9 RAYA Telecom - Egypt
16637 150 440 98 MTN Network Solutions
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 3826 3667 273 bellsouth.net, inc.
4323 2703 1107 392 Time Warner Telecom
4766 1866 8412 500 Korea Telecom (KIX)
19262 1812 4643 282 Verizon Global Networks
1785 1790 698 131 PaeTec Communications, Inc.
8151 1525 3049 245 UniNet S.A. de C.V.
20115 1491 1528 651 Charter Communications
4755 1483 303 164 TATA Communications formerly
7018 1474 5734 951 AT&T WorldNet Services
7545 1367 233 82 TPG Internet Pty Ltd
Complete listing at http://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 2703 2311 Time Warner Telecom
1785 1790 1659 PaeTec Communications, Inc.
19262 1812 1530 Verizon Global Networks
4766 1866 1366 Korea Telecom (KIX)
4755 1483 1319 TATA Communications formerly
7545 1367 1285 TPG Internet Pty Ltd
8151 1525 1280 UniNet S.A. de C.V.
6478 1332 1223 AT&T Worldnet Services
17488 1346 1218 Hathway IP Over Cable Interne
8452 1149 1139 TEDATA
Complete listing at http://thyme.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
11946 UNALLOCATED 8.12.155.0/24 40913 Quality Technology S
33084 UNALLOCATED 8.15.195.0/24 3356 Level 3 Communicatio
16734 UNALLOCATED 8.18.204.0/24 26914 Global Netoptex, Inc
22015 UNALLOCATED 8.22.137.0/24 14989 Broadview Networks
46856 UNALLOCATED 8.22.184.0/22 3356 Level 3 Communicatio
26169 UNALLOCATED 8.225.177.0/24 20225 TelJet
32249 UNALLOCATED 8.225.178.0/24 3356 Level 3 Communicatio
16927 UNALLOCATED 12.0.252.0/23 7018 AT&T WorldNet Servic
46883 UNALLOCATED 12.4.222.0/24 7018 AT&T WorldNet Servic
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
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<<
41.223.189.0/24 6453 Teleglobe Inc.
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
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 /8:20 /9:10 /10:25 /11:67 /12:198
/13:414 /14:724 /15:1315 /16:11259 /17:5420 /18:9283
/19:18666 /20:23423 /21:23540 /22:30709 /23:29993 /24:171963
/25:1061 /26:1173 /27:719 /28:116 /29:47 /30:6
/31:0 /32:7
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2445 3826 bellsouth.net, inc.
4766 1488 1866 Korea Telecom (KIX)
4323 1366 2703 Time Warner Telecom
1785 1253 1790 PaeTec Communications, Inc.
11492 1093 1189 Cable One
10620 1092 1204 TVCABLE BOGOTA
17488 1088 1346 Hathway IP Over Cable Interne
18566 1068 1087 Covad Communications
8452 1040 1149 TEDATA
24560 921 1020 Bharti Airtel Ltd., Telemedia
Complete listing at http://thyme.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:60 2:8 4:13 8:303 12:2017 13:8
14:1 15:21 16:3 17:9 20:7 24:1438
27:298 31:1 32:61 33:22 38:692 40:97
41:2519 44:3 46:55 47:16 52:12 55:5
56:2 57:28 58:805 59:504 60:470 61:1078
62:1038 63:1971 64:3734 65:2307 66:3975 67:1870
68:1135 69:2778 70:743 71:372 72:1940 73:2
74:2306 75:275 76:331 77:915 78:635 79:435
80:1016 81:774 82:501 83:438 84:687 85:1040
86:486 87:692 88:318 89:1536 90:96 91:2996
92:426 93:982 94:1166 95:683 96:507 97:218
98:622 99:34 108:64 109:669 110:481 111:570
112:283 113:316 114:450 115:579 116:1101 117:657
118:507 119:884 120:141 121:707 122:1537 123:961
124:1204 125:1244 128:226 129:158 130:170 131:538
132:246 133:17 134:196 135:46 136:221 137:137
138:272 139:105 140:478 141:196 142:343 143:351
144:472 145:53 146:427 147:169 148:677 149:307
150:153 151:233 152:298 153:169 154:3 155:360
156:167 157:332 158:110 159:358 160:313 161:183
162:269 163:167 164:415 165:368 166:468 167:423
168:667 169:157 170:725 171:61 172:2 173:1034
174:476 175:161 176:1 177:1 178:442 180:604
181:1 182:207 183:232 184:153 186:582 187:514
188:799 189:800 190:4020 192:5764 193:4748 194:3429
195:2793 196:1190 198:3575 199:3560 200:5451 201:1590
202:8053 203:8275 204:4011 205:2387 206:2530 207:3068
208:3869 209:3467 210:2547 211:1295 212:1743 213:1667
214:655 215:67 216:4791 217:1581 218:471 219:394
220:1141 221:387 222:313 223:27
End of report
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