Weekly Routing Table Report
Routing Analysis
cscora at dev.apnic.net
Thu Mar 22 13:03:54 EST 2001
This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
Daily listings are sent to bgp-stats at lists.apnic.net
For a graphical representation, please see http://www.apnic.net/stats/bgp.
If you have any comments please contact Philip Smith <pfs at cisco.com>.
Routing Table Report 23 Mar, 2001
Analysis Summary
----------------
BGP routing table entries examined: 101605
Origin ASes present in the Internet Routing Table: 10350
Origin ASes announcing only one prefix: 3696
Transit ASes present in the Internet Routing Table: 1371
Average AS path length visible in the Internet Routing Table: 5.3
Max AS path length visible: 15
Illegal AS announcements present in the Routing Table: 23
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 3
Number of addresses announced to Internet: 1248418756
Equivalent to 74 /8s, 105 /16s and 91 /24s
Percentage of available address space announced: 33.7
Percentage of allocated address space announced: 66.1
Percentage of available address space allocated: 51.0
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 15520
Prefixes being announced from the APNIC address blocks: 14054
APNIC Region origin ASes present in the Internet Routing Table: 1212
APNIC Region origin ASes announcing only one prefix: 436
APNIC Region transit ASes present in the Internet Routing Table: 202
Average APNIC Region AS path length visible: 5.1
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 68740939
Equivalent to 4 /8s, 24 /16s and 231 /24s
Percentage of available APNIC address space announced: 67.6
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239, 17408 - 18431
APNIC Address Blocks 61/8, 202/7, 210/7 and 218/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 70312
Prefixes being announced from the ARIN address blocks: 47807
ARIN Region origin ASes present in the Internet Routing Table: 6304
ARIN Region origin ASes announcing only one prefix: 1833
ARIN Region transit ASes present in the Internet Routing Table: 649
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 14
Number of ARIN addresses announced to Internet: 212859421
Equivalent to 12 /8s, 175 /16s and 250 /24s
Percentage of available ARIN address space announced: 97.6
ARIN AS Blocks 1 - 1876, 1902 - 2042, 2044 - 2046, 2048 - 2106
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
ARIN Address Blocks 63/8, 64/7, 66/8, 199/8, 200/8, 204/6, 208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 15750
Prefixes being announced from the RIPE address blocks: 12458
RIPE Region origin ASes present in the Internet Routing Table: 2840
RIPE Region origin ASes announcing only one prefix: 1427
RIPE Region transit ASes present in the Internet Routing Table: 519
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 93284090
Equivalent to 5 /8s, 143 /16s and 102 /24s
Percentage of available RIPE address space announced: 79.4
RIPE AS Blocks 1877 - 1901, 2042, 2047, 2107 - 2136, 2585 - 2614
2773 - 2822, 2830 - 2879, 3154 - 3353, 5377 - 5631
6656 - 6911, 8192 - 9215, 12288 - 13311, 15360 - 16383
RIPE Address Blocks 62/8, 193/8, 194/7, 212/7 and 217/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /19 equiv Description
1221 2005 681 Telstra
2764 429 139 connect.com.au pty ltd
703 395 253 UUNET Technologies, Inc.
2907 375 892 SINET Japan
4755 300 111 VSNL India
4538 242 1031 China Education and Research
9269 205 24 Hong Kong CTI
4740 197 13 Ozemail
7474 190 86 Optus Communications
4134 182 603 Data Communications Bureau
4766 178 626 KORnet Powered BY Korea Telec
4763 176 35 Telstra New Zealand
7657 168 12 The Internet Group Limited
1237 167 71 System Engineering Research I
7539 156 101 Delegated to TWNIC for subseq
7545 151 10 TPG Internet Pty Ltd
3462 138 205 Data Communications Institute
4786 124 7 NetConnect Communications Pty
7617 124 46 One.Net Pty Ltd
7586 123 9 Paradox Digital Pty. Ltd
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
702 420 624 UUNET Technologies, Inc.
3301 397 321 TeliaNet Sweden
1257 287 248 Swipnet AB
1270 276 455 UUNET Germany
680 207 905 Deutschef Forschurgsnetz
5515 191 335 Sonera Finland
719 190 146 LANLINK
3215 189 209 RAIN
786 183 959 JANET IP Service
3320 157 462 Deutsche Telekom AG
1849 146 255 UUNET UK (formerly PIPEX)
517 132 136 Xlink
3303 125 298 Swisscom
5400 121 33 Concert Internet Plus Europea
2856 119 388 BTnet UK Regional network
8708 101 5 Romania Data System
1267 97 978 IUnet S.p.A
1901 97 77 EUnet Austria
2830 96 38 UUNET UK (formerly PIPEX)
1290 84 205 PSINet UK Ltd.
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
701 2399 3607 UUNET Technologies, Inc.
705 1079 52 UUNET Technologies, Inc.
1 996 4542 BBN Planet
7018 944 3041 AT&T
7046 728 4645 UUNET Technologies, Inc.
1239 638 1564 Sprint ICM-Inria
2914 604 1239 Verio, Inc.
174 597 2791 PSINet Inc.
3561 559 1250 Cable & Wireless USA
3549 546 496 Global Crossing
4293 474 60 Cable & Wireless USA
209 450 722 Qwest
690 409 56 Merit Network
2548 394 514 Digital Express Group, Inc.
3908 384 278 Supernet, Inc.
8151 358 204 UniNet S.A. de C.V.
8013 338 55 PSINet Ltd. Canada
4323 337 136 Time Warner Communications, I
11371 328 49 Rhythms NetConnections
3967 326 221 Exodus Communication
Global Per AS prefix count summary
----------------------------------
ASN No of nets /19 equiv Description
701 2399 3607 UUNET Technologies, Inc.
1221 2005 681 Telstra
705 1079 52 UUNET Technologies, Inc.
1 996 4542 BBN Planet
7018 944 3041 AT&T
7046 728 4645 UUNET Technologies, Inc.
1239 638 1564 Sprint ICM-Inria
2914 604 1239 Verio, Inc.
174 597 2791 PSINet Inc.
3561 559 1250 Cable & Wireless USA
3549 546 496 Global Crossing
4293 474 60 Cable & Wireless USA
209 450 722 Qwest
2764 429 139 connect.com.au pty ltd
702 420 624 UUNET Technologies, Inc.
690 409 56 Merit Network
3301 397 321 TeliaNet Sweden
703 395 253 UUNET Technologies, Inc.
2548 394 514 Digital Express Group, Inc.
3908 384 278 Supernet, Inc.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
2027 UNALLOCATED 150.185.0.0/16 10530 Interpacket Group, I
2027 UNALLOCATED 150.185.128.0/18 8143 Publicom Corp.
2027 UNALLOCATED 150.186.0.0/16 10530 Interpacket Group, I
2027 UNALLOCATED 150.187.0.0/16 10530 Interpacket Group, I
2027 UNALLOCATED 150.188.0.0/16 10530 Interpacket Group, I
2027 UNALLOCATED 150.189.0.0/16 10530 Interpacket Group, I
1877 UNALLOCATED 192.108.196.0/24 1800 SPRINT
1877 UNALLOCATED 192.108.209.0/24 1880 Stupi, house man's
1877 UNALLOCATED 192.108.210.0/24 1880 Stupi, house man's
1877 UNALLOCATED 192.108.214.0/24 1800 SPRINT
20516 UNALLOCATED 192.117.224.0/21 8513 ITD Israel
5757 UNALLOCATED 192.239.13.0/24 701 UUNET Technologies,
65008 PRIVATE 193.48.190.0/24 2200 INRIA-Rocquencourt
65008 PRIVATE 193.49.4.0/24 2200 INRIA-Rocquencourt
20486 UNALLOCATED 193.178.213.0/24 9085 SUPER MEDIA Autonomo
65008 PRIVATE 194.167.0.0/24 2200 INRIA-Rocquencourt
65535 PRIVATE 203.24.169.0/24 17486 Swiftel Communicatio
65500 PRIVATE 203.166.86.0/24 10084 Western Australian I
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
20508 UNALLOCATED 213.88.96.0/22 12909 Ics.IP SpA
20507 UNALLOCATED 217.149.192.0/20 702 UUNET Technologies,
20483 UNALLOCATED 217.150.0.0/20 9110 AG TELECOM AS Russia
20521 UNALLOCATED 217.168.160.0/20 15735 Datastream internati
Advertised IANA Reserved Addresses
----------------------------------
Network Origin AS Description
91.16.23.0/24 11770 Net56
106.1.1.0/24 5705 Sirius Solutions, Inc.
106.1.2.0/24 5705 Sirius Solutions, Inc.
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:23 /9:4 /10:4 /11:9 /12:31
/13:63 /14:206 /15:319 /16:6912 /17:1108 /18:2074
/19:6496 /20:4912 /21:4404 /22:6769 /23:8640 /24:58363
/25:273 /26:342 /27:148 /28:109 /29:72 /30:165
/31:1 /32:158
Number of /24s announced per /8 block (Global)
----------------------------------------------
9:3 12:326 13:10 15:1 17:1 24:667
26:1 32:11 38:7 44:3 47:1 53:2
55:1 57:9 61:41 62:121 63:1865 64:1499
65:430 66:197 91:1 106:2 128:31 129:119
130:20 131:24 132:11 133:3 134:148 135:10
136:16 137:112 138:234 139:50 140:113 141:158
142:56 143:74 144:35 145:9 146:132 147:91
148:131 149:133 150:27 151:355 152:965 153:33
154:13 155:73 156:35 157:111 158:58 159:79
160:16 161:57 162:60 163:134 164:133 165:121
166:172 167:90 168:78 169:31 170:214 171:2
192:5357 193:1843 194:2030 195:760 196:382 198:3660
199:3357 200:1854 202:2422 203:4905 204:3389 205:2239
206:2743 207:2791 208:2919 209:3178 210:479 211:159
212:797 213:316 214:8 215:11 216:2840 217:158
End of report
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