Weekly Routing Table Report
Routing Analysis
cscora at dev.apnic.net
Thu Mar 1 13:03:47 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 02 Mar, 2001
Analysis Summary
----------------
BGP routing table entries examined: 101782
Origin ASes present in the Internet Routing Table: 10158
Origin ASes announcing only one prefix: 3648
Transit ASes present in the Internet Routing Table: 1351
Average AS path length visible in the Internet Routing Table: 5.3
Max AS path length visible: 16
Illegal AS announcements present in the Routing Table: 14
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: 1245881361
Equivalent to 74 /8s, 66 /16s and 164 /24s
Percentage of available address space announced: 33.6
Percentage of allocated address space announced: 65.9
Percentage of available address space allocated: 51.0
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 15777
Prefixes being announced from the APNIC address blocks: 14124
APNIC Region origin ASes present in the Internet Routing Table: 1171
APNIC Region origin ASes announcing only one prefix: 429
APNIC Region transit ASes present in the Internet Routing Table: 192
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 70384792
Equivalent to 4 /8s, 49 /16s and 252 /24s
Percentage of available APNIC address space announced: 69.2
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: 70153
Prefixes being announced from the ARIN address blocks: 47971
ARIN Region origin ASes present in the Internet Routing Table: 6186
ARIN Region origin ASes announcing only one prefix: 1815
ARIN Region transit ASes present in the Internet Routing Table: 638
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 14
Number of ARIN addresses announced to Internet: 194580734
Equivalent to 11 /8s, 153 /16s and 16 /24s
Percentage of available ARIN address space announced: 89.2
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: 15838
Prefixes being announced from the RIPE address blocks: 12549
RIPE Region origin ASes present in the Internet Routing Table: 2800
RIPE Region origin ASes announcing only one prefix: 1404
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: 16
Number of RIPE addresses announced to Internet: 109079953
Equivalent to 6 /8s, 128 /16s and 109 /24s
Percentage of available RIPE address space announced: 92.9
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 2389 1189 Telstra
2764 426 140 connect.com.au pty ltd
703 401 253 UUNET Technologies, Inc.
2907 378 909 SINET Japan
4755 296 111 VSNL India
4740 275 17 Ozemail
4538 220 1006 China Education and Research
4618 211 56 Internet Thailand
9269 205 24 Hong Kong CTI
7474 202 89 Optus Communications
7545 201 7 TPG Internet Pty Ltd
7657 192 12 The Internet Group Limited
4763 177 35 Telstra New Zealand
4766 175 620 KORnet Powered BY Korea Telec
4134 173 557 Data Communications Bureau
3462 137 205 Data Communications Institute
4786 131 8 NetConnect Communications Pty
7539 131 82 Delegated to TWNIC for subseq
7586 131 10 Paradox Digital Pty. Ltd
7617 125 46 One.Net Pty Ltd
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
3301 403 330 TeliaNet Sweden
702 397 607 UUNET Technologies, Inc.
1257 290 248 Swipnet AB
3215 274 183 RAIN
1270 272 450 UUNET Germany
680 203 889 Deutschef Forschurgsnetz
719 190 146 LANLINK
786 184 960 JANET IP Service
5515 169 318 Sonera Finland
3320 167 462 Deutsche Telekom AG
1849 149 263 UUNET UK (formerly PIPEX)
1942 139 53 GIP Renater
517 134 136 Xlink
3303 129 277 Swisscom
2856 125 388 BTnet UK Regional network
3352 114 321 Ibernet, Internet A
5400 112 31 Concert Internet Plus Europea
1901 104 77 EUnet Austria
1267 98 986 IUnet S.p.A
2830 89 30 UUNET UK (formerly PIPEX)
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
701 2693 3546 UUNET Technologies, Inc.
1 1000 4549 BBN Planet
7018 921 3024 AT&T
705 781 51 UUNET Technologies, Inc.
7046 724 525 UUNET Technologies, Inc.
1239 645 1554 Sprint ICM-Inria
2914 617 1261 Verio, Inc.
174 613 2808 PSINet Inc.
3561 580 1276 Cable & Wireless USA
3549 540 497 Global Crossing
2551 490 344 NETCOM On-Line Communication
4293 476 58 Cable & Wireless USA
209 468 674 Qwest
3908 394 280 Supernet, Inc.
2548 393 514 Digital Express Group, Inc.
8151 366 197 UniNet S.A. de C.V.
271 350 270 BCnet Backbone
8013 339 63 PSINet Ltd. Canada
690 332 35 Merit Network
11371 327 49 Rhythms NetConnections
Global Per AS prefix count summary
----------------------------------
ASN No of nets /19 equiv Description
701 2693 3546 UUNET Technologies, Inc.
1221 2389 1189 Telstra
1 1000 4549 BBN Planet
7018 921 3024 AT&T
705 781 51 UUNET Technologies, Inc.
7046 724 525 UUNET Technologies, Inc.
1239 645 1554 Sprint ICM-Inria
2914 617 1261 Verio, Inc.
174 613 2808 PSINet Inc.
3561 580 1276 Cable & Wireless USA
3549 540 497 Global Crossing
2551 490 344 NETCOM On-Line Communication
4293 476 58 Cable & Wireless USA
209 468 674 Qwest
2764 426 140 connect.com.au pty ltd
3301 403 330 TeliaNet Sweden
703 401 253 UUNET Technologies, Inc.
702 397 607 UUNET Technologies, Inc.
3908 394 280 Supernet, Inc.
2548 393 514 Digital Express Group, Inc.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65535 PRIVATE 62.4.68.96/27 6461 AboveNet Communicati
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
5757 UNALLOCATED 192.239.13.0/24 701 UUNET Technologies,
65500 PRIVATE 203.166.86.0/24 10084 Western Australian I
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
Advertised IANA Reserved Addresses
----------------------------------
Network Origin AS Description
39.96.40.224/30 14408 iCAIR
91.16.23.0/24 11770 Net56
103.22.7.0/24 9768 PubNet (Korea Telecom)
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 /10:5 /11:9 /12:31
/13:61 /14:201 /15:314 /16:6889 /17:1070 /18:2095
/19:6411 /20:4792 /21:4338 /22:6640 /23:8610 /24:58989
/25:279 /26:352 /27:151 /28:111 /29:76 /30:178
/31:0 /32:153
Number of /24s announced per /8 block (Global)
----------------------------------------------
9:3 12:311 13:10 15:1 17:1 24:673
26:1 32:6 38:8 44:3 47:1 53:2
55:1 57:8 61:38 62:123 63:1813 64:1375
65:157 66:146 91:1 103:1 128:34 129:110
130:20 131:31 132:11 133:3 134:136 135:8
136:16 137:112 138:239 139:54 140:102 141:35
142:57 143:44 144:193 145:10 146:132 147:92
148:123 149:123 150:24 151:357 152:979 153:35
154:12 155:73 156:29 157:105 158:56 159:78
160:16 161:55 162:60 163:132 164:129 165:114
166:175 167:90 168:81 169:31 170:202 171:2
192:5349 193:1833 194:2014 195:817 196:366 198:3712
199:3422 200:1830 202:2423 203:5177 204:3656 205:2467
206:2777 207:3001 208:2944 209:3345 210:426 211:145
212:818 213:295 214:9 215:11 216:2817 217:132
End of report
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