Weekly Routing Table Report
Routing Analysis
cscora at dev.apnic.net
Thu Mar 15 13:03:57 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 16 Mar, 2001
Analysis Summary
----------------
BGP routing table entries examined: 101454
Origin ASes present in the Internet Routing Table: 10295
Origin ASes announcing only one prefix: 3673
Transit ASes present in the Internet Routing Table: 1364
Average AS path length visible in the Internet Routing Table: 5.3
Max AS path length visible: 15
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: 1212764391
Equivalent to 72 /8s, 73 /16s and 80 /24s
Percentage of available address space announced: 32.7
Percentage of allocated address space announced: 64.2
Percentage of available address space allocated: 51.0
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 15577
Prefixes being announced from the APNIC address blocks: 14101
APNIC Region origin ASes present in the Internet Routing Table: 1195
APNIC Region origin ASes announcing only one prefix: 427
APNIC Region transit ASes present in the Internet Routing Table: 197
Average APNIC Region AS path length visible: 5.1
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 68405865
Equivalent to 4 /8s, 19 /16s and 202 /24s
Percentage of available APNIC address space announced: 67.3
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: 70227
Prefixes being announced from the ARIN address blocks: 47910
ARIN Region origin ASes present in the Internet Routing Table: 6271
ARIN Region origin ASes announcing only one prefix: 1818
ARIN Region transit ASes present in the Internet Routing Table: 646
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 14
Number of ARIN addresses announced to Internet: 178852306
Equivalent to 10 /8s, 169 /16s and 17 /24s
Percentage of available ARIN address space announced: 82.0
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: 15631
Prefixes being announced from the RIPE address blocks: 12351
RIPE Region origin ASes present in the Internet Routing Table: 2831
RIPE Region origin ASes announcing only one prefix: 1428
RIPE Region transit ASes present in the Internet Routing Table: 519
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 92441309
Equivalent to 5 /8s, 130 /16s and 138 /24s
Percentage of available RIPE address space announced: 78.7
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 2093 685 Telstra
2764 429 140 connect.com.au pty ltd
703 393 253 UUNET Technologies, Inc.
2907 379 909 SINET Japan
4755 277 109 VSNL India
4538 244 1032 China Education and Research
9269 205 24 Hong Kong CTI
4740 200 13 Ozemail
7657 200 12 The Internet Group Limited
7545 196 8 TPG Internet Pty Ltd
7474 188 86 Optus Communications
4134 180 591 Data Communications Bureau
4766 178 626 KORnet Powered BY Korea Telec
4763 176 35 Telstra New Zealand
1237 169 71 System Engineering Research I
7539 152 97 Delegated to TWNIC for subseq
3462 137 205 Data Communications Institute
7586 128 9 Paradox Digital Pty. Ltd
4786 127 7 NetConnect Communications Pty
9797 126 8 Asia Online Australia
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
702 407 622 UUNET Technologies, Inc.
3301 404 321 TeliaNet Sweden
1257 288 248 Swipnet AB
1270 277 455 UUNET Germany
680 207 905 Deutschef Forschurgsnetz
719 189 146 LANLINK
5515 189 335 Sonera Finland
786 184 960 JANET IP Service
3215 180 199 RAIN
3320 158 462 Deutsche Telekom AG
1849 149 255 UUNET UK (formerly PIPEX)
517 134 136 Xlink
3303 133 318 Swisscom
2856 121 388 BTnet UK Regional network
5400 116 32 Concert Internet Plus Europea
1267 97 978 IUnet S.p.A
1901 97 77 EUnet Austria
2830 91 38 UUNET UK (formerly PIPEX)
1290 84 205 PSINet UK Ltd.
3269 84 276 TELECOM ITALIA
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
701 2373 3561 UUNET Technologies, Inc.
1 993 4533 BBN Planet
705 952 49 UUNET Technologies, Inc.
7018 937 3027 AT&T
7046 736 550 UUNET Technologies, Inc.
1239 637 1564 Sprint ICM-Inria
174 629 2800 PSINet Inc.
2914 608 1244 Verio, Inc.
3549 578 534 Global Crossing
3561 565 1258 Cable & Wireless USA
4293 481 59 Cable & Wireless USA
209 446 723 Qwest
2548 400 515 Digital Express Group, Inc.
3908 378 277 Supernet, Inc.
816 370 162 UUNET Canada4
8151 365 204 UniNet S.A. de C.V.
690 339 36 Merit Network
8013 338 55 PSINet Ltd. Canada
4323 337 136 Time Warner Communications, I
11371 328 49 Rhythms NetConnections
Global Per AS prefix count summary
----------------------------------
ASN No of nets /19 equiv Description
701 2373 3561 UUNET Technologies, Inc.
1221 2093 685 Telstra
1 993 4533 BBN Planet
705 952 49 UUNET Technologies, Inc.
7018 937 3027 AT&T
7046 736 550 UUNET Technologies, Inc.
1239 637 1564 Sprint ICM-Inria
174 629 2800 PSINet Inc.
2914 608 1244 Verio, Inc.
3549 578 534 Global Crossing
3561 565 1258 Cable & Wireless USA
4293 481 59 Cable & Wireless USA
209 446 723 Qwest
2764 429 140 connect.com.au pty ltd
702 407 622 UUNET Technologies, Inc.
3301 404 321 TeliaNet Sweden
2548 400 515 Digital Express Group, Inc.
703 393 253 UUNET Technologies, Inc.
2907 379 909 SINET Japan
3908 378 277 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,
65008 PRIVATE 193.48.190.0/24 2200 INRIA-Rocquencourt
65008 PRIVATE 193.49.4.0/24 2200 INRIA-Rocquencourt
65008 PRIVATE 194.167.0.0/24 2200 INRIA-Rocquencourt
65500 PRIVATE 203.166.86.0/24 10084 Western Australian I
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
65200 PRIVATE 216.248.176.0/22 6983 Viper Computer Syste
20483 UNALLOCATED 217.150.0.0/20 9110 AG TELECOM AS Russia
Advertised IANA Reserved Addresses
----------------------------------
Network Origin AS Description
91.16.23.0/24 11770 Net56
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 /10:4 /11:9 /12:31
/13:62 /14:204 /15:320 /16:6907 /17:1106 /18:2057
/19:6455 /20:4886 /21:4373 /22:6752 /23:8663 /24:58367
/25:272 /26:344 /27:149 /28:104 /29:60 /30:146
/31:1 /32:157
Number of /24s announced per /8 block (Global)
----------------------------------------------
9:3 12:324 13:10 15:1 17:1 24:657
26:1 32:11 38:7 44:3 47:1 53:2
55:1 57:9 61:42 62:122 63:1862 64:1464
65:300 66:177 91:1 128:31 129:108 130:20
131:24 132:11 133:3 134:143 135:10 136:16
137:112 138:237 139:51 140:113 141:25 142:58
143:45 144:35 145:9 146:134 147:91 148:122
149:135 150:27 151:358 152:972 153:35 154:12
155:72 156:34 157:107 158:57 159:78 160:15
161:55 162:60 163:136 164:132 165:119 166:174
167:86 168:80 169:30 170:215 171:2 192:5356
193:1833 194:2023 195:762 196:388 198:3673 199:3326
200:1862 202:2439 203:5030 204:3400 205:2256 206:2744
207:2804 208:2946 209:3416 210:445 211:161 212:790
213:309 214:9 215:11 216:2859 217:137
End of report
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