Weekly Routing Table Report
Routing Analysis
cscora at dev.apnic.net
Thu May 10 14:05:19 EDT 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 11 May, 2001
Analysis Summary
----------------
BGP routing table entries examined: 105792
Origin ASes present in the Internet Routing Table: 10804
Origin ASes announcing only one prefix: 3935
Transit ASes present in the Internet Routing Table: 1445
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: 16
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: 1263460384
Equivalent to 75 /8s, 78 /16s and 224 /24s
Percentage of available address space announced: 34.1
Percentage of allocated address space announced: 65.7
Percentage of available address space allocated: 51.9
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 15441
Prefixes being announced from the APNIC address blocks: 14012
APNIC Region origin ASes present in the Internet Routing Table: 1249
APNIC Region origin ASes announcing only one prefix: 445
APNIC Region transit ASes present in the Internet Routing Table: 209
Average APNIC Region AS path length visible: 5.1
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 70917987
Equivalent to 4 /8s, 58 /16s and 31 /24s
Percentage of available APNIC address space announced: 69.7
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: 73634
Prefixes being announced from the ARIN address blocks: 50662
ARIN Region origin ASes present in the Internet Routing Table: 6580
ARIN Region origin ASes announcing only one prefix: 1970
ARIN Region transit ASes present in the Internet Routing Table: 691
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 13
Number of ARIN addresses announced to Internet: 183888365
Equivalent to 10 /8s, 245 /16s and 233 /24s
Percentage of available ARIN address space announced: 84.3
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: 16701
Prefixes being announced from the RIPE address blocks: 13038
RIPE Region origin ASes present in the Internet Routing Table: 2972
RIPE Region origin ASes announcing only one prefix: 1516
RIPE Region transit ASes present in the Internet Routing Table: 544
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 114898378
Equivalent to 6 /8s, 217 /16s and 53 /24s
Percentage of available RIPE address space announced: 76.1
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 1766 707 Telstra
2764 430 147 connect.com.au pty ltd
703 381 205 UUNET Technologies, Inc.
2907 363 883 SINET Japan
4755 328 112 VSNL India
4538 243 1049 China Education and Research
7539 209 90 Delegated to TWNIC for subseq
7657 206 14 The Internet Group Limited
7474 193 86 Optus Communications
4134 192 632 Data Communications Bureau
7545 154 10 TPG Internet Pty Ltd
17561 152 69 Internet service provision to
1237 148 50 System Engineering Research I
4766 147 598 KORnet Powered BY Korea Telec
4740 140 10 Ozemail
4786 126 7 NetConnect Communications Pty
9443 125 23 INTERNETPRIMUS-AS-A
7586 123 9 Paradox Digital Pty. Ltd
9394 122 19 CHINA RAILWAY TELECOMMUNICATI
4736 120 17 Magna Data
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
702 543 803 UUNET Technologies, Inc.
15870 446 3 Global Center Frankfurt
3301 390 401 TeliaNet Sweden
1257 278 263 Swipnet AB
1270 266 440 UUNET Germany
3215 213 224 RAIN
680 212 938 Deutschef Forschurgsnetz
5515 193 336 Sonera Finland
719 187 146 LANLINK
786 185 952 JANET IP Service
3320 162 710 Deutsche Telekom AG
517 131 137 Xlink
5400 129 33 Concert Internet Plus Europea
8708 127 7 Romania Data System
3303 122 296 Swisscom
2856 120 396 BTnet UK Regional network
1290 102 204 PSINet UK Ltd.
1267 100 978 IUnet S.p.A
1901 92 77 EUnet Austria
1849 91 79 UUNET UK (formerly PIPEX)
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
701 2381 3908 UUNET Technologies, Inc.
705 1143 54 UUNET Technologies, Inc.
7018 1019 3283 AT&T
1 955 4464 BBN Planet
7046 802 565 UUNET Technologies, Inc.
3491 694 181 CAIS Internet
1239 635 1606 Sprint ICM-Inria
2914 598 1185 Verio, Inc.
3561 544 1215 Cable & Wireless USA
3549 507 524 Global Crossing
4293 501 52 Cable & Wireless USA
18994 493 5 Global Crossing
690 463 54 Merit Network
209 459 726 Qwest
2548 410 506 Digital Express Group, Inc.
174 405 2695 PSINet Inc.
3908 384 233 Supernet, Inc.
3602 358 73 Sprint Canada
3967 340 228 Exodus Communication
4323 340 136 Time Warner Communications, I
Global Per AS prefix count summary
----------------------------------
ASN No of nets /19 equiv Description
701 2381 3908 UUNET Technologies, Inc.
1221 1766 707 Telstra
705 1143 54 UUNET Technologies, Inc.
7018 1019 3283 AT&T
1 955 4464 BBN Planet
7046 802 565 UUNET Technologies, Inc.
3491 694 181 CAIS Internet
1239 635 1606 Sprint ICM-Inria
2914 598 1185 Verio, Inc.
3561 544 1215 Cable & Wireless USA
702 543 803 UUNET Technologies, Inc.
3549 507 524 Global Crossing
4293 501 52 Cable & Wireless USA
18994 493 5 Global Crossing
690 463 54 Merit Network
209 459 726 Qwest
15870 446 3 Global Center Frankfurt
2764 430 147 connect.com.au pty ltd
2548 410 506 Digital Express Group, Inc.
174 405 2695 PSINet Inc.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
60002 RESERVED 64.76.148.0/24 19583 CHILE S.A.
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,
60002 RESERVED 200.9.98.0/24 6429 RdC Internet
60002 RESERVED 200.9.99.0/24 6429 RdC Internet
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
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
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 /8:22 /9:5 /10:6 /11:9 /12:30
/13:74 /14:205 /15:341 /16:6943 /17:1151 /18:2133
/19:6648 /20:5186 /21:4524 /22:6813 /23:8728 /24:60541
/25:313 /26:512 /27:432 /28:450 /29:377 /30:286
/31:1 /32:62
Number of /24s announced per /8 block (Global)
----------------------------------------------
9:3 12:364 13:10 15:1 17:2 24:689
26:1 32:12 38:593 44:3 47:1 53:2
55:1 57:11 61:30 62:122 63:1946 64:1613
65:527 66:315 128:35 129:111 130:23 131:36
132:9 133:1 134:169 135:11 136:16 137:121
138:247 139:49 140:141 141:166 142:61 143:41
144:136 145:9 146:136 147:135 148:96 149:123
150:27 151:300 152:700 153:36 154:17 155:78
156:43 157:107 158:172 159:76 160:27 161:56
162:62 163:134 164:96 165:126 166:178 167:138
168:79 169:34 170:264 171:2 192:5446 193:1957
194:2074 195:783 196:398 198:3650 199:3392 200:2020
201:1 202:2458 203:4810 204:3378 205:2253 206:2837
207:2904 208:2981 209:3138 210:503 211:155 212:873
213:403 214:9 215:12 216:3015 217:221
End of report
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