Weekly Routing Table Report
Routing Analysis
cscora at dev.apnic.net
Thu Feb 8 13:03:30 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 09 Feb, 2001
Analysis Summary
----------------
BGP routing table entries examined: 100689
Origin ASes present in the Internet Routing Table: 9892
Origin ASes announcing only one prefix: 3524
Transit ASes present in the Internet Routing Table: 1324
Average AS path length visible in the Internet Routing Table: 5.3
Max AS path length visible: 18
Illegal AS announcements present in the Routing Table: 15
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 4
Number of addresses announced to Internet: 1207529448
Equivalent to 71 /8s, 249 /16s and 111 /24s
Percentage of available address space announced: 32.6
Percentage of allocated address space announced: 63.9
Percentage of available address space allocated: 51.0
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 15740
Prefixes being announced from the APNIC address blocks: 14063
APNIC Region origin ASes present in the Internet Routing Table: 1147
APNIC Region origin ASes announcing only one prefix: 413
APNIC Region transit ASes present in the Internet Routing Table: 190
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 13
Number of APNIC addresses announced to Internet: 69686953
Equivalent to 4 /8s, 39 /16s and 86 /24s
Percentage of available APNIC address space announced: 68.5
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: 69573
Prefixes being announced from the ARIN address blocks: 47249
ARIN Region origin ASes present in the Internet Routing Table: 6028
ARIN Region origin ASes announcing only one prefix: 1756
ARIN Region transit ASes present in the Internet Routing Table: 632
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 14
Number of ARIN addresses announced to Internet: 176439809
Equivalent to 10 /8s, 132 /16s and 66 /24s
Percentage of available ARIN address space announced: 80.9
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
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: 15361
Prefixes being announced from the RIPE address blocks: 12117
RIPE Region origin ASes present in the Internet Routing Table: 2715
RIPE Region origin ASes announcing only one prefix: 1353
RIPE Region transit ASes present in the Internet Routing Table: 501
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 89815660
Equivalent to 5 /8s, 90 /16s and 122 /24s
Percentage of available RIPE address space announced: 76.5
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 2446 1198 Telstra
2764 438 140 connect.com.au pty ltd
703 367 248 UUNET Technologies, Inc.
2907 366 892 SINET Japan
4755 311 112 VSNL India
4740 257 16 Ozemail
7657 215 12 The Internet Group Limited
9269 209 24 Hong Kong CTI
4618 207 56 Internet Thailand
7545 205 7 TPG Internet Pty Ltd
4538 199 972 China Education and Research
4763 190 43 Telstra New Zealand
7474 189 87 Optus Communications
4766 171 619 KORnet Powered BY Korea Telec
4134 169 523 Data Communications Bureau
3462 136 205 Data Communications Institute
7586 135 10 Paradox Digital Pty. Ltd
7539 129 83 Delegated to TWNIC for subseq
4786 128 7 NetConnect Communications Pty
7496 124 9 Power Up
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
3301 391 314 TeliaNet Sweden
702 380 588 UUNET Technologies, Inc.
1257 320 240 Swipnet AB
1270 270 433 UUNET Germany
3215 207 182 RAIN
680 194 856 Deutschef Forschurgsnetz
719 191 146 LANLINK
786 184 960 JANET IP Service
5515 172 326 Sonera Finland
3320 167 462 Deutsche Telekom AG
1849 152 271 UUNET UK (formerly PIPEX)
1942 140 53 GIP Renater
2856 140 394 BTnet UK Regional network
517 134 137 Xlink
3303 128 277 Swisscom
5400 109 31 Concert Internet Plus Europea
1901 104 77 EUnet Austria
1267 98 986 IUnet S.p.A
2830 85 30 UUNET UK (formerly PIPEX)
3269 85 267 TELECOM ITALIA
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
701 2640 3588 UUNET Technologies, Inc.
1 996 4572 BBN Planet
7018 911 3020 AT&T
7046 735 551 UUNET Technologies, Inc.
1239 697 1580 Sprint ICM-Inria
705 635 39 UUNET Technologies, Inc.
2914 611 1272 Verio, Inc.
174 594 2794 PSINet Inc.
3561 569 1307 Cable & Wireless USA
3549 537 442 Frontier GlobalCenter
8013 521 68 PSINet Ltd. Canada
2551 502 345 NETCOM On-Line Communication
4293 473 58 Cable & Wireless USA
209 438 650 Qwest
2548 398 523 Digital Express Group, Inc.
3908 392 280 Supernet, Inc.
6082 358 63 Management Analysis, Incorpor
8151 358 192 UniNet S.A. de C.V.
271 349 269 BCnet Backbone
11371 324 49 Rhythms NetConnections
Global Per AS prefix count summary
----------------------------------
ASN No of nets /19 equiv Description
701 2640 3588 UUNET Technologies, Inc.
1221 2446 1198 Telstra
1 996 4572 BBN Planet
7018 911 3020 AT&T
7046 735 551 UUNET Technologies, Inc.
1239 697 1580 Sprint ICM-Inria
705 635 39 UUNET Technologies, Inc.
2914 611 1272 Verio, Inc.
174 594 2794 PSINet Inc.
3561 569 1307 Cable & Wireless USA
3549 537 442 Frontier GlobalCenter
8013 521 68 PSINet Ltd. Canada
2551 502 345 NETCOM On-Line Communication
4293 473 58 Cable & Wireless USA
209 438 650 Qwest
2764 438 140 connect.com.au pty ltd
2548 398 523 Digital Express Group, Inc.
3908 392 280 Supernet, Inc.
3301 391 314 TeliaNet Sweden
702 380 588 UUNET Technologies, Inc.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
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
61512 RESERVED 170.224.16.0/20 17232 Enhanced Network Ser
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,
17411 UNALLOCATED 202.137.32.0/21 703 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
50.198.0.0/16 2548 Digital Express Group, Inc.
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 /8:21 /9:4 /10:5 /11:10 /12:32
/13:61 /14:195 /15:307 /16:6859 /17:1040 /18:2041
/19:6339 /20:4637 /21:4310 /22:6515 /23:8469 /24:58457
/25:277 /26:349 /27:132 /28:101 /29:105 /30:291
/31:0 /32:132
Number of /24s announced per /8 block (Global)
----------------------------------------------
9:3 12:310 13:10 15:1 24:648 26:1
32:6 38:9 44:3 53:2 55:1 57:9
61:41 62:112 63:1677 64:1263 65:54 66:112
91:1 103:1 128:33 129:233 130:20 131:31
132:10 133:4 134:104 135:8 136:121 137:145
138:192 139:53 140:110 141:43 142:56 143:38
144:188 145:7 146:133 147:54 148:119 149:116
150:24 151:330 152:969 153:35 154:76 155:71
156:15 157:106 158:56 159:60 160:16 161:57
162:60 163:130 164:108 165:102 166:174 167:83
168:74 169:30 170:203 171:2 192:5413 193:1819
194:1996 195:773 196:394 198:3758 199:3459 200:1821
202:2427 203:5259 204:3552 205:2455 206:2799 207:2948
208:2925 209:3374 210:387 211:135 212:800 213:297
214:9 215:11 216:2678 217:105
End of report
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