Weekly Routing Table Report
Routing Analysis
cscora at dev.apnic.net
Thu Mar 8 13:03:47 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 Mar, 2001
Analysis Summary
----------------
BGP routing table entries examined: 101587
Origin ASes present in the Internet Routing Table: 10242
Origin ASes announcing only one prefix: 3665
Transit ASes present in the Internet Routing Table: 1374
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: 14
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 2
Number of addresses announced to Internet: 1244351344
Equivalent to 74 /8s, 43 /16s and 75 /24s
Percentage of available address space announced: 33.6
Percentage of allocated address space announced: 65.8
Percentage of available address space allocated: 51.0
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 15875
Prefixes being announced from the APNIC address blocks: 14211
APNIC Region origin ASes present in the Internet Routing Table: 1190
APNIC Region origin ASes announcing only one prefix: 428
APNIC Region transit ASes present in the Internet Routing Table: 197
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 67053608
Equivalent to 3 /8s, 255 /16s and 40 /24s
Percentage of available APNIC address space announced: 65.9
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: 69945
Prefixes being announced from the ARIN address blocks: 47720
ARIN Region origin ASes present in the Internet Routing Table: 6241
ARIN Region origin ASes announcing only one prefix: 1824
ARIN Region transit ASes present in the Internet Routing Table: 655
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 14
Number of ARIN addresses announced to Internet: 211929698
Equivalent to 12 /8s, 161 /16s and 202 /24s
Percentage of available ARIN address space announced: 97.2
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: 15753
Prefixes being announced from the RIPE address blocks: 12466
RIPE Region origin ASes present in the Internet Routing Table: 2810
RIPE Region origin ASes announcing only one prefix: 1413
RIPE Region transit ASes present in the Internet Routing Table: 520
Average RIPE Region AS path length visible: 6.0
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 92205759
Equivalent to 5 /8s, 126 /16s and 242 /24s
Percentage of available RIPE address space announced: 78.5
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 2375 679 Telstra
2764 474 141 connect.com.au pty ltd
703 401 253 UUNET Technologies, Inc.
2907 378 909 SINET Japan
4755 297 112 VSNL India
4740 273 17 Ozemail
4538 264 1055 China Education and Research
9269 205 24 Hong Kong CTI
7545 201 7 TPG Internet Pty Ltd
7474 200 87 Optus Communications
7657 198 12 The Internet Group Limited
4763 177 35 Telstra New Zealand
4134 176 570 Data Communications Bureau
4766 175 620 KORnet Powered BY Korea Telec
3462 137 205 Data Communications Institute
7539 137 91 Delegated to TWNIC for subseq
4786 134 8 NetConnect Communications Pty
7586 129 10 Paradox Digital Pty. Ltd
9797 128 8 Asia Online Australia
7617 124 46 One.Net Pty Ltd
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
702 404 629 UUNET Technologies, Inc.
3301 399 321 TeliaNet Sweden
1257 288 248 Swipnet AB
1270 273 451 UUNET Germany
3215 248 190 RAIN
680 204 889 Deutschef Forschurgsnetz
5515 195 343 Sonera Finland
719 190 146 LANLINK
786 183 959 JANET IP Service
3320 166 462 Deutsche Telekom AG
1849 148 255 UUNET UK (formerly PIPEX)
1942 139 53 GIP Renater
517 131 136 Xlink
3303 131 286 Swisscom
2856 123 388 BTnet UK Regional network
5400 114 32 Concert Internet Plus Europea
1267 97 978 IUnet S.p.A
1901 96 69 EUnet Austria
2830 89 30 UUNET UK (formerly PIPEX)
3269 86 275 TELECOM ITALIA
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
701 2373 3684 UUNET Technologies, Inc.
1 997 4549 BBN Planet
7018 925 3043 AT&T
705 875 46 UUNET Technologies, Inc.
7046 719 525 UUNET Technologies, Inc.
1239 641 1573 Sprint ICM-Inria
174 616 2800 PSINet Inc.
2914 612 1252 Verio, Inc.
3561 574 1267 Cable & Wireless USA
3549 554 534 Global Crossing
4293 479 58 Cable & Wireless USA
209 463 675 Qwest
816 425 74 UUNET Canada4
2548 398 515 Digital Express Group, Inc.
3908 375 277 Supernet, Inc.
8151 365 197 UniNet S.A. de C.V.
8013 337 62 PSINet Ltd. Canada
690 329 19 Merit Network
11371 327 49 Rhythms NetConnections
3967 322 221 Exodus Communication
Global Per AS prefix count summary
----------------------------------
ASN No of nets /19 equiv Description
1221 2375 679 Telstra
701 2373 3684 UUNET Technologies, Inc.
1 997 4549 BBN Planet
7018 925 3043 AT&T
705 875 46 UUNET Technologies, Inc.
7046 719 525 UUNET Technologies, Inc.
1239 641 1573 Sprint ICM-Inria
174 616 2800 PSINet Inc.
2914 612 1252 Verio, Inc.
3561 574 1267 Cable & Wireless USA
3549 554 534 Global Crossing
4293 479 58 Cable & Wireless USA
2764 474 141 connect.com.au pty ltd
209 463 675 Qwest
816 425 74 UUNET Canada4
702 404 629 UUNET Technologies, Inc.
703 401 253 UUNET Technologies, Inc.
3301 399 321 TeliaNet Sweden
2548 398 515 Digital Express Group, Inc.
2907 378 909 SINET Japan
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,
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
91.16.23.0/24 11770 Net56
100.100.100.0/24 9318 AS Object of HANARO Telecom i
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:23 /9:4 /10:4 /11:9 /12:31
/13:62 /14:203 /15:318 /16:6904 /17:1085 /18:2046
/19:6434 /20:4853 /21:4352 /22:6679 /23:8586 /24:58696
/25:280 /26:350 /27:156 /28:111 /29:65 /30:184
/31:0 /32:152
Number of /24s announced per /8 block (Global)
----------------------------------------------
9:3 12:317 13:10 15:1 24:674 26:1
32:5 38:8 44:3 47:1 53:2 55:1
57:8 61:39 62:123 63:1836 64:1426 65:225
66:166 91:1 100:1 128:30 129:105 130:20
131:32 132:11 133:3 134:138 135:8 136:16
137:112 138:239 139:54 140:103 141:26 142:58
143:45 144:189 145:9 146:133 147:90 148:123
149:132 150:26 151:358 152:949 153:35 154:12
155:72 156:31 157:106 158:58 159:76 160:16
161:55 162:60 163:134 164:129 165:122 166:174
167:90 168:80 169:30 170:205 171:2 192:5353
193:1824 194:2029 195:812 196:388 198:3699 199:3344
200:1836 202:2439 203:5108 204:3517 205:2355 206:2745
207:2852 208:2931 209:3367 210:499 211:165 212:793
213:299 214:9 215:11 216:2845 217:129
End of report
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