Weekly Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri Aug 27 18:32:14 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 28 Aug, 2010
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 329510
Prefixes after maximum aggregation: 151625
Deaggregation factor: 2.17
Unique aggregates announced to Internet: 161906
Total ASes present in the Internet Routing Table: 34686
Prefixes per ASN: 9.50
Origin-only ASes present in the Internet Routing Table: 30086
Origin ASes announcing only one prefix: 14608
Transit ASes present in the Internet Routing Table: 4600
Transit-only ASes present in the Internet Routing Table: 106
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: 1590
Unregistered ASNs in the Routing Table: 797
Number of 32-bit ASNs allocated by the RIRs: 748
Prefixes from 32-bit ASNs in the Routing Table: 962
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 170
Number of addresses announced to Internet: 2293803456
Equivalent to 136 /8s, 184 /16s and 169 /24s
Percentage of available address space announced: 61.9
Percentage of allocated address space announced: 66.1
Percentage of available address space allocated: 93.7
Percentage of address space in use by end-sites: 84.5
Total number of prefixes smaller than registry allocations: 156020
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 80080
Total APNIC prefixes after maximum aggregation: 27494
APNIC Deaggregation factor: 2.91
Prefixes being announced from the APNIC address blocks: 77020
Unique aggregates announced from the APNIC address blocks: 33981
APNIC Region origin ASes present in the Internet Routing Table: 4178
APNIC Prefixes per ASN: 18.43
APNIC Region origin ASes announcing only one prefix: 1167
APNIC Region transit ASes present in the Internet Routing Table: 640
Average APNIC Region AS path length visible: 3.7
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 541736480
Equivalent to 32 /8s, 74 /16s and 62 /24s
Percentage of available APNIC address space announced: 76.9
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, 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: 135692
Total ARIN prefixes after maximum aggregation: 69900
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 108438
Unique aggregates announced from the ARIN address blocks: 42670
ARIN Region origin ASes present in the Internet Routing Table: 13878
ARIN Prefixes per ASN: 7.81
ARIN Region origin ASes announcing only one prefix: 5319
ARIN Region transit ASes present in the Internet Routing Table: 1380
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 22
Number of ARIN addresses announced to Internet: 732630688
Equivalent to 43 /8s, 171 /16s and 14 /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: 75384
Total RIPE prefixes after maximum aggregation: 44003
RIPE Deaggregation factor: 1.71
Prefixes being announced from the RIPE address blocks: 68841
Unique aggregates announced from the RIPE address blocks: 45070
RIPE Region origin ASes present in the Internet Routing Table: 14722
RIPE Prefixes per ASN: 4.68
RIPE Region origin ASes announcing only one prefix: 7583
RIPE Region transit ASes present in the Internet Routing Table: 2207
Average RIPE Region AS path length visible: 3.9
Max RIPE Region AS path length visible: 24
Number of RIPE addresses announced to Internet: 436405504
Equivalent to 26 /8s, 3 /16s and 5 /24s
Percentage of available RIPE address space announced: 76.5
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: 29777
Total LACNIC prefixes after maximum aggregation: 7078
LACNIC Deaggregation factor: 4.21
Prefixes being announced from the LACNIC address blocks: 28269
Unique aggregates announced from the LACNIC address blocks: 15311
LACNIC Region origin ASes present in the Internet Routing Table: 1338
LACNIC Prefixes per ASN: 21.13
LACNIC Region origin ASes announcing only one prefix: 414
LACNIC Region transit ASes present in the Internet Routing Table: 237
Average LACNIC Region AS path length visible: 3.9
Max LACNIC Region AS path length visible: 18
Number of LACNIC addresses announced to Internet: 76818560
Equivalent to 4 /8s, 148 /16s and 40 /24s
Percentage of available LACNIC address space announced: 57.2
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: 7369
Total AfriNIC prefixes after maximum aggregation: 1886
AfriNIC Deaggregation factor: 3.91
Prefixes being announced from the AfriNIC address blocks: 5717
Unique aggregates announced from the AfriNIC address blocks: 1722
AfriNIC Region origin ASes present in the Internet Routing Table: 397
AfriNIC Prefixes per ASN: 14.40
AfriNIC Region origin ASes announcing only one prefix: 125
AfriNIC Region transit ASes present in the Internet Routing Table: 91
Average AfriNIC Region AS path length visible: 3.7
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 20112896
Equivalent to 1 /8s, 50 /16s and 230 /24s
Percentage of available AfriNIC address space announced: 59.9
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 498 Korea Telecom (KIX)
4755 1482 302 162 TATA Communications formerly
7545 1385 234 86 TPG Internet Pty Ltd
17488 1342 153 130 Hathway IP Over Cable Interne
17974 1168 295 81 PT TELEKOMUNIKASI INDONESIA
9583 1017 76 490 Sify Limited
24560 998 303 179 Bharti Airtel Ltd., Telemedia
4808 917 1692 247 CNCGROUP IP network: China169
9829 818 689 36 BSNL National Internet Backbo
4134 785 22475 418 CHINANET-BACKBONE
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 3843 3668 277 bellsouth.net, inc.
4323 2701 1115 393 Time Warner Telecom
19262 1802 4626 276 Verizon Global Networks
1785 1791 698 131 PaeTec Communications, Inc.
20115 1493 1529 653 Charter Communications
7018 1470 5734 953 AT&T WorldNet Services
6478 1308 274 118 AT&T Worldnet Services
2386 1289 554 907 AT&T Data Communications Serv
11492 1239 214 119 Cable One
22773 1180 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 449 2026 390 TDC Tele Danmark
30890 443 99 211 Evolva Telecom
702 407 1870 324 UUNET - Commercial IP service
8866 403 117 18 Bulgarian Telecommunication C
8551 401 353 46 Bezeq International
3320 376 7329 325 Deutsche Telekom AG
3301 374 1416 329 TeliaNet Sweden
34984 367 89 185 BILISIM TELEKOM
12479 350 576 5 Uni2 Autonomous System
31148 326 17 80 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 1526 3049 246 UniNet S.A. de C.V.
10620 1102 246 148 TVCABLE BOGOTA
28573 1025 833 111 NET Servicos de Comunicao S.A
6503 835 187 257 AVANTEL, S.A.
7303 791 408 101 Telecom Argentina Stet-France
14420 553 35 76 CORPORACION NACIONAL DE TELEC
22047 551 310 15 VTR PUNTO NET S.A.
3816 477 210 100 Empresa Nacional de Telecomun
7738 477 922 30 Telecomunicacoes da Bahia S.A
11172 445 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 1145 445 10 TEDATA
24863 725 147 39 LINKdotNET AS number
36992 661 279 185 Etisalat MISR
3741 267 907 225 The Internet Solution
33776 209 12 12 Starcomms Nigeria Limited
2018 197 277 64 Tertiary Education Network
6713 195 186 16 Itissalat Al-MAGHRIB
29571 193 19 11 Ci Telecom Autonomous system
24835 190 78 9 RAYA Telecom - Egypt
16637 147 440 96 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 3843 3668 277 bellsouth.net, inc.
4323 2701 1115 393 Time Warner Telecom
4766 1866 8412 498 Korea Telecom (KIX)
19262 1802 4626 276 Verizon Global Networks
1785 1791 698 131 PaeTec Communications, Inc.
8151 1526 3049 246 UniNet S.A. de C.V.
20115 1493 1529 653 Charter Communications
4755 1482 302 162 TATA Communications formerly
7018 1470 5734 953 AT&T WorldNet Services
7545 1385 234 86 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 2701 2308 Time Warner Telecom
1785 1791 1660 PaeTec Communications, Inc.
19262 1802 1526 Verizon Global Networks
4766 1866 1368 Korea Telecom (KIX)
4755 1482 1320 TATA Communications formerly
7545 1385 1299 TPG Internet Pty Ltd
8151 1526 1280 UniNet S.A. de C.V.
17488 1342 1212 Hathway IP Over Cable Interne
6478 1308 1190 AT&T Worldnet Services
8452 1145 1135 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 3561 Savvis
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 /8:21 /9:10 /10:25 /11:67 /12:198
/13:414 /14:721 /15:1314 /16:11254 /17:5413 /18:9271
/19:18630 /20:23332 /21:23461 /22:30502 /23:29899 /24:171828
/25:1059 /26:1198 /27:718 /28:115 /29:47 /30:6
/31:0 /32:7
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2459 3843 bellsouth.net, inc.
4766 1488 1866 Korea Telecom (KIX)
4323 1365 2701 Time Warner Telecom
1785 1254 1791 PaeTec Communications, Inc.
11492 1091 1239 Cable One
17488 1084 1342 Hathway IP Over Cable Interne
18566 1068 1087 Covad Communications
8452 1036 1145 TEDATA
10620 1015 1102 TVCABLE BOGOTA
24560 897 998 Bharti Airtel Ltd., Telemedia
Complete listing at http://thyme.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:56 2:2 4:13 8:303 12:2014 13:8
14:1 15:21 16:3 17:9 20:7 24:1436
27:289 31:1 32:61 33:22 38:695 40:97
41:2521 44:3 46:45 47:16 52:12 55:7
56:2 57:28 58:801 59:503 60:460 61:1074
62:1086 63:1975 64:3740 65:2323 66:4032 67:1839
68:1122 69:2788 70:743 71:372 72:1940 73:2
74:2320 75:274 76:327 77:882 78:624 79:437
80:1038 81:804 82:503 83:510 84:691 85:1043
86:481 87:696 88:317 89:1532 90:97 91:2989
92:423 93:985 94:1161 95:679 96:489 97:217
98:621 99:34 108:64 109:651 110:456 111:556
112:279 113:314 114:451 115:573 116:1095 117:658
118:484 119:895 120:141 121:708 122:1540 123:955
124:1119 125:1242 128:226 129:158 130:199 131:540
132:247 133:17 134:195 135:45 136:236 137:136
138:264 139:105 140:476 141:197 142:344 143:351
144:471 145:52 146:427 147:170 148:679 149:305
150:153 151:233 152:299 153:169 154:3 155:361
156:165 157:328 158:118 159:358 160:315 161:183
162:269 163:167 164:416 165:369 166:467 167:423
168:654 169:158 170:722 171:61 172:2 173:1008
174:502 175:155 176:1 177:1 178:435 180:586
181:1 182:234 183:237 184:204 186:565 187:453
188:797 189:757 190:3978 192:5764 193:4754 194:3427
195:2788 196:1172 198:3577 199:3579 200:5430 201:1580
202:8055 203:8300 204:4010 205:2398 206:2534 207:3077
208:3887 209:3469 210:2561 211:1297 212:1754 213:1683
214:658 215:67 216:4775 217:1576 218:478 219:379
220:1140 221:388 222:290 223:7
End of report
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