Weekly Routing Table Report
Routing Analysis
cscora at dev.apnic.net
Thu May 31 14:12:58 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 01 Jun, 2001
Analysis Summary
----------------
BGP routing table entries examined: 107671
Origin ASes present in the Internet Routing Table: 10993
Origin ASes announcing only one prefix: 4006
Transit ASes present in the Internet Routing Table: 1458
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: 33
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 16
Number of addresses announced to Internet: 1233416619
Equivalent to 73 /8s, 132 /16s and 113 /24s
Percentage of available address space announced: 33.3
Percentage of allocated address space announced: 64.6
Percentage of available address space allocated: 51.5
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 15398
Prefixes being announced from the APNIC address blocks: 13903
APNIC Region origin ASes present in the Internet Routing Table: 1263
APNIC Region origin ASes announcing only one prefix: 442
APNIC Region transit ASes present in the Internet Routing Table: 207
Average APNIC Region AS path length visible: 5.1
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 69540541
Equivalent to 4 /8s, 37 /16s and 26 /24s
Percentage of available APNIC address space announced: 68.4
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: 74885
Prefixes being announced from the ARIN address blocks: 53222
ARIN Region origin ASes present in the Internet Routing Table: 6693
ARIN Region origin ASes announcing only one prefix: 1994
ARIN Region transit ASes present in the Internet Routing Table: 697
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 12
Number of ARIN addresses announced to Internet: 198605942
Equivalent to 11 /8s, 214 /16s and 124 /24s
Percentage of available ARIN address space announced: 78.9
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, 21504 - 22527
ARIN Address Blocks 24/8, 63/8, 64/7, 66/7, 199/8, 200/8, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 17384
Prefixes being announced from the RIPE address blocks: 13517
RIPE Region origin ASes present in the Internet Routing Table: 3047
RIPE Region origin ASes announcing only one prefix: 1570
RIPE Region transit ASes present in the Internet Routing Table: 555
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 99124106
Equivalent to 5 /8s, 232 /16s and 131 /24s
Percentage of available RIPE address space announced: 65.6
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 /20 equiv Description
1221 1722 1329 Telstra
2764 430 328 connect.com.au pty ltd
2907 365 1767 SINET Japan
703 353 394 UUNET Technologies, Inc.
4755 339 221 VSNL India
7539 222 195 TANet2, sponsored by NSC, TAI
4134 200 1419 Data Communications Bureau
7474 194 171 Optus Communications
4766 173 1258 KORnet Powered BY Korea Telec
4740 160 37 Ozemail
7657 156 25 The Internet Group Limited
1237 152 140 System Engineering Research I
17561 151 137 Internet service provision to
7545 149 21 TPG Internet Pty Ltd
9443 132 47 INTERNETPRIMUS-AS-A
4786 125 14 NetConnect Communications Pty
7586 118 10 Paradox Digital Pty. Ltd
4763 115 85 Telstra New Zealand
7617 114 91 One.Net Pty Ltd
9583 112 62 Satyam Infoway Ltd.,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
3301 902 950 TeliaNet Sweden
702 650 1755 UUNET Technologies, Inc.
15870 441 7 Global Center Frankfurt
1257 283 503 Swipnet AB
1270 265 864 UUNET Germany
680 226 2007 Deutschef Forschurgsnetz
15878 221 8 Global Center Paris
3215 220 471 RAIN
719 186 291 LANLINK
786 185 1904 JANET IP Service
5515 175 638 Sonera Finland
3320 164 1418 Deutsche Telekom AG
5400 136 67 Concert Internet Plus Europea
8708 130 14 Romania Data System
3303 129 592 Swisscom
517 128 273 Xlink
2856 116 775 BTnet UK Regional network
1267 99 1954 IUnet S.p.A
1290 98 407 PSINet UK Ltd.
3269 90 568 TELECOM ITALIA
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2415 7538 UUNET Technologies, Inc.
7018 1800 7007 AT&T
705 1488 129 UUNET Technologies, Inc.
1 924 8919 BBN Planet
7046 811 1131 UUNET Technologies, Inc.
3491 674 392 CAIS Internet
1239 658 3274 Sprint ICM-Inria
2914 564 2335 Verio, Inc.
3561 543 2434 Cable & Wireless USA
690 487 66 Merit Network
18994 474 11 Global Crossing
4293 472 100 Cable & Wireless USA
209 463 1829 Qwest
2149 414 489 Performance Systems, Inc.
2548 406 997 Digital Express Group, Inc.
3908 391 533 Supernet, Inc.
3549 344 1064 Global Crossing
5106 333 132 Ameritech Advanced Data Servi
11371 333 100 Rhythms NetConnections
3967 331 454 Exodus Communication
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2415 7538 UUNET Technologies, Inc.
7018 1800 7007 AT&T
1221 1722 1329 Telstra
705 1488 129 UUNET Technologies, Inc.
1 924 8919 BBN Planet
3301 902 950 TeliaNet Sweden
7046 811 1131 UUNET Technologies, Inc.
3491 674 392 CAIS Internet
1239 658 3274 Sprint ICM-Inria
702 650 1755 UUNET Technologies, Inc.
2914 564 2335 Verio, Inc.
3561 543 2434 Cable & Wireless USA
690 487 66 Merit Network
18994 474 11 Global Crossing
4293 472 100 Cable & Wireless USA
209 463 1829 Qwest
15870 441 7 Global Center Frankfurt
2764 430 328 connect.com.au pty ltd
2149 414 489 Performance Systems, Inc.
2548 406 997 Digital Express Group, Inc.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
16998 UNALLOCATED 63.127.205.0/24 1239 Sprint ICM-Inria
16998 UNALLOCATED 63.170.150.0/24 1239 Sprint ICM-Inria
16998 UNALLOCATED 63.175.19.0/24 1239 Sprint ICM-Inria
60002 RESERVED 64.76.148.0/24 19583 IMPSAT CHILE S.A.
578 UNALLOCATED 64.230.243.96/27 577 Bell Canada
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,
16028 UNALLOCATED 193.251.160.0/24 5511 OPENTRANSIT
16028 UNALLOCATED 193.251.162.0/24 5511 OPENTRANSIT
16028 UNALLOCATED 193.251.163.0/24 5511 OPENTRANSIT
16028 UNALLOCATED 193.251.164.0/24 5511 OPENTRANSIT
65000 PRIVATE 198.208.54.0/24 7046 UUNET Technologies,
65000 PRIVATE 198.208.187.0/24 7046 UUNET Technologies,
5978 UNALLOCATED 199.211.157.0/24 303 Navy Personnel R & D
5978 UNALLOCATED 199.211.162.0/24 303 Navy Personnel R & D
9700 UNALLOCATED 202.30.50.0/23 3786 DACOM Corporation
65500 PRIVATE 203.166.86.0/24 10084 Western Australian I
9700 UNALLOCATED 203.255.208.0/24 3786 DACOM Corporation
9700 UNALLOCATED 203.255.209.0/24 3786 DACOM Corporation
9700 UNALLOCATED 203.255.210.0/24 3786 DACOM Corporation
9700 UNALLOCATED 203.255.211.0/24 3786 DACOM Corporation
5978 UNALLOCATED 204.222.228.0/24 303 Navy Personnel R & D
5978 UNALLOCATED 204.222.229.0/24 303 Navy Personnel R & D
16998 UNALLOCATED 206.67.166.0/24 1239 Sprint ICM-Inria
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
12762 UNALLOCATED 212.51.224.0/21 8437 UTA.AT Backbone
12762 UNALLOCATED 212.51.232.0/21 8447 HIGHWAY194 Autonomo
12762 UNALLOCATED 212.51.240.0/21 5385 TELEPORT Consulting
12762 UNALLOCATED 212.51.248.0/21 8437 UTA.AT Backbone
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
128.65.0.0/16 3463 ACES Research Inc
128.199.0.0/16 5519 GX Networks (former
132.0.0.0/10 568 DISO-UNRRA
134.137.0.0/16 7170 AT&T Government Markets
135.0.0.0/13 10455 Lucent Technologies
137.0.0.0/13 568 DISO-UNRRA
138.94.0.0/16 1 BBN Planet
139.157.0.0/16 5515 Sonera Finland
144.7.0.0/16 701 UUNET Technologies, Inc.
146.104.0.0/16 1136 SURFnet BV
153.34.0.0/15 701 UUNET Technologies, Inc.
153.36.0.0/14 701 UUNET Technologies, Inc.
158.0.0.0/13 568 DISO-UNRRA
172.32.1.0/25 1221 Telstra
172.122.0.0/16 701 UUNET Technologies, Inc.
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 /12:32
/13:76 /14:207 /15:346 /16:6902 /17:1170 /18:2157
/19:6689 /20:5195 /21:4526 /22:6825 /23:8784 /24:62286
/25:269 /26:439 /27:479 /28:485 /29:382 /30:324
/31:1 /32:57
Number of /24s announced per /8 block (Global)
----------------------------------------------
9:3 12:750 13:10 15:1 17:3 24:675
26:1 32:125 38:572 44:3 47:1 53:2
55:1 57:13 61:31 62:130 63:1964 64:1673
65:998 66:340 80:2 128:38 129:134 130:23
131:39 132:9 133:1 134:169 135:12 136:16
137:122 138:246 139:44 140:139 141:158 142:69
143:41 144:135 145:9 146:141 147:135 148:94
149:121 150:36 151:298 152:582 153:32 154:19
155:78 156:52 157:110 158:181 159:75 160:27
161:53 162:68 163:139 164:97 165:129 166:203
167:140 168:98 169:35 170:253 171:4 192:5434
193:1858 194:2052 195:747 196:410 198:3662 199:3372
200:2100 201:1 202:2500 203:4830 204:3361 205:2269
206:2838 207:2969 208:3042 209:3207 210:551 211:125
212:823 213:804 214:9 215:11 216:3057 217:352
End of report
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