Weekly Routing Table Report
Routing Analysis
cscora at dev.apnic.net
Thu Feb 22 13:03:51 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 Feb, 2001
Analysis Summary
----------------
BGP routing table entries examined: 101198
Origin ASes present in the Internet Routing Table: 10071
Origin ASes announcing only one prefix: 3584
Transit ASes present in the Internet Routing Table: 1348
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: 1243790830
Equivalent to 74 /8s, 34 /16s and 189 /24s
Percentage of available address space announced: 33.6
Percentage of allocated address space announced: 65.8
Percentage of available address space allocated: 51.0
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 15712
Prefixes being announced from the APNIC address blocks: 14048
APNIC Region origin ASes present in the Internet Routing Table: 1162
APNIC Region origin ASes announcing only one prefix: 420
APNIC Region transit ASes present in the Internet Routing Table: 193
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 69937651
Equivalent to 4 /8s, 43 /16s and 41 /24s
Percentage of available APNIC address space announced: 68.8
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: 69818
Prefixes being announced from the ARIN address blocks: 47624
ARIN Region origin ASes present in the Internet Routing Table: 6144
ARIN Region origin ASes announcing only one prefix: 1786
ARIN Region transit ASes present in the Internet Routing Table: 637
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 13
Number of ARIN addresses announced to Internet: 194202724
Equivalent to 11 /8s, 147 /16s and 76 /24s
Percentage of available ARIN address space announced: 89.0
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: 15654
Prefixes being announced from the RIPE address blocks: 12384
RIPE Region origin ASes present in the Internet Routing Table: 2764
RIPE Region origin ASes announcing only one prefix: 1378
RIPE Region transit ASes present in the Internet Routing Table: 516
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 107480842
Equivalent to 6 /8s, 104 /16s and 7 /24s
Percentage of available RIPE address space announced: 91.5
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 2394 1189 Telstra
2764 427 140 connect.com.au pty ltd
703 391 253 UUNET Technologies, Inc.
2907 376 909 SINET Japan
4755 305 111 VSNL India
4618 212 56 Internet Thailand
4740 209 13 Ozemail
9269 206 24 Hong Kong CTI
4538 205 948 China Education and Research
7545 203 7 TPG Internet Pty Ltd
7474 199 89 Optus Communications
7657 198 12 The Internet Group Limited
4763 187 43 Telstra New Zealand
4766 174 619 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 86 Delegated to TWNIC for subseq
7586 131 10 Paradox Digital Pty. Ltd
7496 128 9 Power Up
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
702 413 607 UUNET Technologies, Inc.
3301 402 330 TeliaNet Sweden
1257 311 248 Swipnet AB
3215 273 183 RAIN
1270 271 450 UUNET Germany
680 203 889 Deutschef Forschurgsnetz
719 190 146 LANLINK
786 184 960 JANET IP Service
5515 168 318 Sonera Finland
3320 167 462 Deutsche Telekom AG
1849 154 271 UUNET UK (formerly PIPEX)
1942 139 53 GIP Renater
517 135 137 Xlink
2856 130 388 BTnet UK Regional network
3303 129 277 Swisscom
5400 113 31 Concert Internet Plus Europea
1901 104 77 EUnet Austria
1267 99 986 IUnet S.p.A
3269 86 275 TELECOM ITALIA
2830 85 30 UUNET UK (formerly PIPEX)
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
701 2666 3571 UUNET Technologies, Inc.
1 1006 4565 BBN Planet
7018 932 3017 AT&T
705 739 41 UUNET Technologies, Inc.
7046 715 524 UUNET Technologies, Inc.
1239 641 1551 Sprint ICM-Inria
2914 626 1271 Verio, Inc.
174 583 2799 PSINet Inc.
3561 573 1276 Cable & Wireless USA
3549 533 473 Frontier GlobalCenter
2551 498 345 NETCOM On-Line Communication
4293 471 57 Cable & Wireless USA
209 470 658 Qwest
2548 394 515 Digital Express Group, Inc.
3908 389 280 Supernet, Inc.
8151 364 204 UniNet S.A. de C.V.
271 349 270 BCnet Backbone
8013 339 63 PSINet Ltd. Canada
690 328 34 Merit Network
11371 325 49 Rhythms NetConnections
Global Per AS prefix count summary
----------------------------------
ASN No of nets /19 equiv Description
701 2666 3571 UUNET Technologies, Inc.
1221 2394 1189 Telstra
1 1006 4565 BBN Planet
7018 932 3017 AT&T
705 739 41 UUNET Technologies, Inc.
7046 715 524 UUNET Technologies, Inc.
1239 641 1551 Sprint ICM-Inria
2914 626 1271 Verio, Inc.
174 583 2799 PSINet Inc.
3561 573 1276 Cable & Wireless USA
3549 533 473 Frontier GlobalCenter
2551 498 345 NETCOM On-Line Communication
4293 471 57 Cable & Wireless USA
209 470 658 Qwest
2764 427 140 connect.com.au pty ltd
702 413 607 UUNET Technologies, Inc.
3301 402 330 TeliaNet Sweden
2548 394 515 Digital Express Group, Inc.
703 391 253 UUNET Technologies, Inc.
3908 389 280 Supernet, 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 /11:10 /12:32
/13:62 /14:196 /15:306 /16:6866 /17:1062 /18:2040
/19:6379 /20:4714 /21:4339 /22:6578 /23:8567 /24:58739
/25:271 /26:345 /27:147 /28:110 /29:83 /30:178
/31:0 /32:142
Number of /24s announced per /8 block (Global)
----------------------------------------------
9:3 12:316 13:10 15:1 17:1 24:660
26:1 32:7 38:8 44:3 53:2 55:1
57:8 61:42 62:121 63:1763 64:1361 65:112
66:120 91:1 103:1 128:38 129:115 130:20
131:31 132:10 133:3 134:108 135:8 136:16
137:112 138:288 139:54 140:105 141:45 142:56
143:42 144:193 145:9 146:133 147:92 148:122
149:117 150:25 151:334 152:974 153:35 154:12
155:73 156:18 157:106 158:55 159:78 160:16
161:56 162:60 163:131 164:132 165:113 166:173
167:87 168:81 169:31 170:201 171:2 192:5370
193:1841 194:2019 195:793 196:389 198:3711 199:3424
200:1835 202:2425 203:5183 204:3672 205:2450 206:2735
207:2984 208:2934 209:3295 210:394 211:146 212:835
213:308 214:9 215:11 216:2811 217:113
End of report
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