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Weekly Routing Table Report
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 18 May, 2001
Analysis Summary
----------------
BGP routing table entries examined: 106302
Origin ASes present in the Internet Routing Table: 10868
Origin ASes announcing only one prefix: 3970
Transit ASes present in the Internet Routing Table: 1434
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: 19
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 1
Number of addresses announced to Internet: 1230918418
Equivalent to 73 /8s, 94 /16s and 83 /24s
Percentage of available address space announced: 33.2
Percentage of allocated address space announced: 64.0
Percentage of available address space allocated: 51.9
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 15978
Prefixes being announced from the APNIC address blocks: 14530
APNIC Region origin ASes present in the Internet Routing Table: 1248
APNIC Region origin ASes announcing only one prefix: 442
APNIC Region transit ASes present in the Internet Routing Table: 205
Average APNIC Region AS path length visible: 5.1
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 72191777
Equivalent to 4 /8s, 77 /16s and 143 /24s
Percentage of available APNIC address space announced: 71.0
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: 73572
Prefixes being announced from the ARIN address blocks: 50747
ARIN Region origin ASes present in the Internet Routing Table: 6618
ARIN Region origin ASes announcing only one prefix: 1985
ARIN Region transit ASes present in the Internet Routing Table: 686
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 200075426
Equivalent to 11 /8s, 236 /16s and 232 /24s
Percentage of available ARIN address space announced: 91.7
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: 16733
Prefixes being announced from the RIPE address blocks: 13079
RIPE Region origin ASes present in the Internet Routing Table: 3000
RIPE Region origin ASes announcing only one prefix: 1539
RIPE Region transit ASes present in the Internet Routing Table: 541
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 98389962
Equivalent to 5 /8s, 221 /16s and 79 /24s
Percentage of available RIPE address space announced: 65.2
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
20480 - 21503
RIPE Address Blocks 62/8, 80/7, 193/8, 194/7, 212/7 and 217/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /19 equiv Description
1221 1743 665 Telstra
2764 875 172 connect.com.au pty ltd
703 382 206 UUNET Technologies, Inc.
2907 364 884 SINET Japan
4755 327 110 VSNL India
4538 241 1048 China Education and Research
7539 214 97 Delegated to TWNIC for subseq
4134 195 635 Data Communications Bureau
7474 191 86 Optus Communications
7657 183 13 The Internet Group Limited
7545 156 11 TPG Internet Pty Ltd
4740 151 9 Ozemail
17561 151 68 Internet service provision to
1237 149 50 System Engineering Research I
4766 148 681 KORnet Powered BY Korea Telec
4786 126 7 NetConnect Communications Pty
9443 124 23 INTERNETPRIMUS-AS-A
7586 121 9 Paradox Digital Pty. Ltd
4736 120 17 Magna Data
7617 120 46 One.Net Pty Ltd
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
702 591 833 UUNET Technologies, Inc.
15870 450 3 Global Center Frankfurt
3301 392 401 TeliaNet Sweden
1257 278 263 Swipnet AB
1270 268 440 UUNET Germany
680 215 970 Deutschef Forschurgsnetz
3215 211 231 RAIN
719 186 146 LANLINK
786 185 952 JANET IP Service
5515 173 318 Sonera Finland
3320 163 709 Deutsche Telekom AG
5400 132 34 Concert Internet Plus Europea
517 128 136 Xlink
3303 126 296 Swisscom
8708 120 7 Romania Data System
2856 118 396 BTnet UK Regional network
1267 100 978 IUnet S.p.A
1290 98 203 PSINet UK Ltd.
1901 91 69 EUnet Austria
3269 86 278 TELECOM ITALIA
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
701 2364 3781 UUNET Technologies, Inc.
705 1157 54 UUNET Technologies, Inc.
7018 1026 3306 AT&T
1 948 4464 BBN Planet
7046 804 2612 UUNET Technologies, Inc.
3491 678 180 CAIS Internet
1239 637 1597 Sprint ICM-Inria
2914 594 1181 Verio, Inc.
3561 542 1208 Cable & Wireless USA
4293 485 42 Cable & Wireless USA
18994 480 5 Global Crossing
690 472 47 Merit Network
209 454 797 Qwest
2548 405 506 Digital Express Group, Inc.
3908 386 265 Supernet, Inc.
174 368 2614 PSINet Inc.
3602 358 73 Sprint Canada
3549 349 526 Global Crossing
4323 340 140 Time Warner Communications, I
3967 338 227 Exodus Communication
Global Per AS prefix count summary
----------------------------------
ASN No of nets /19 equiv Description
701 2364 3781 UUNET Technologies, Inc.
1221 1743 665 Telstra
705 1157 54 UUNET Technologies, Inc.
7018 1026 3306 AT&T
1 948 4464 BBN Planet
2764 875 172 connect.com.au pty ltd
7046 804 2612 UUNET Technologies, Inc.
3491 678 180 CAIS Internet
1239 637 1597 Sprint ICM-Inria
2914 594 1181 Verio, Inc.
702 591 833 UUNET Technologies, Inc.
3561 542 1208 Cable & Wireless USA
4293 485 42 Cable & Wireless USA
18994 480 5 Global Crossing
690 472 47 Merit Network
209 454 797 Qwest
15870 450 3 Global Center Frankfurt
2548 405 506 Digital Express Group, Inc.
3301 392 401 TeliaNet Sweden
3908 386 265 Supernet, Inc.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
2027 UNALLOCATED 150.185.128.0/18 8143 Publicom Corp.
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,
65527 PRIVATE 195.138.163.0/24 6221 US Cybersites, Inc
17441 UNALLOCATED 203.131.192.0/24 6347 SAVVIS Communication
65502 PRIVATE 203.166.83.0/24 10084 Western Australian I
65500 PRIVATE 203.166.86.0/24 10084 Western Australian I
5555 UNALLOCATED 205.110.64.0/24 721 DLA Systems Automati
5555 UNALLOCATED 205.110.68.0/22 721 DLA Systems Automati
5555 UNALLOCATED 205.110.72.0/21 721 DLA Systems Automati
65527 PRIVATE 206.98.236.0/24 6221 US Cybersites, Inc
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
65527 PRIVATE 208.130.10.0/24 6221 US Cybersites, Inc
65527 PRIVATE 208.140.136.0/21 6221 US Cybersites, Inc
65527 PRIVATE 208.140.170.0/24 6221 US Cybersites, Inc
65527 PRIVATE 208.140.174.0/23 6221 US Cybersites, Inc
Advertised IANA Reserved Addresses
----------------------------------
Network Origin AS Description
201.115.100.0/24 7018 AT&T
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:20 /9:5 /10:6 /11:9 /12:31
/13:73 /14:203 /15:346 /16:6936 /17:1167 /18:2138
/19:6650 /20:5201 /21:4529 /22:6813 /23:8705 /24:61097
/25:265 /26:455 /27:449 /28:463 /29:380 /30:296
/31:1 /32:64
Number of /24s announced per /8 block (Global)
----------------------------------------------
9:3 12:362 13:10 15:1 17:2 24:690
26:1 32:13 38:576 44:3 47:1 53:2
55:1 57:11 61:32 62:121 63:1955 64:1670
65:568 66:318 128:43 129:106 130:23 131:36
132:9 133:1 134:169 135:11 136:16 137:122
138:245 139:47 140:139 141:165 142:63 143:41
144:139 145:9 146:137 147:135 148:93 149:124
150:27 151:300 152:629 153:32 154:18 155:80
156:47 157:106 158:178 159:76 160:27 161:56
162:62 163:135 164:95 165:119 166:175 167:139
168:82 169:35 170:266 171:2 192:5447 193:1956
194:2067 195:774 196:403 198:3658 199:3394 200:2051
201:1 202:2521 203:4981 204:3358 205:2265 206:2835
207:2903 208:2961 209:3153 210:746 211:159 212:877
213:413 214:9 215:12 216:3023 217:231
End of report
-----
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