Weekly Routing Table Report
Routing Analysis
cscora at dev.apnic.net
Thu Jan 25 13:03:24 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 26 Jan, 2001
Analysis Summary
----------------
BGP routing table entries examined: 100429
Origin ASes present in the Internet Routing Table: 9764
Origin ASes announcing only one prefix: 3457
Transit ASes present in the Internet Routing Table: 1294
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: 16
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: 1201411540
Equivalent to 71 /8s, 156 /16s and 21 /24s
Percentage of available address space announced: 32.4
Percentage of allocated address space announced: 63.6
Percentage of available address space allocated: 51.0
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 15456
Prefixes being announced from the APNIC address blocks: 13920
APNIC Region origin ASes present in the Internet Routing Table: 1138
APNIC Region origin ASes announcing only one prefix: 402
APNIC Region transit ASes present in the Internet Routing Table: 183
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 10
Number of APNIC addresses announced to Internet: 65439899
Equivalent to 3 /8s, 230 /16s and 136 /24s
Percentage of available APNIC address space announced: 77.0
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239, 17408 - 18431
APNIC Address Blocks 61/8, 202/7 and 210/7
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 69576
Prefixes being announced from the ARIN address blocks: 47310
ARIN Region origin ASes present in the Internet Routing Table: 5941
ARIN Region origin ASes announcing only one prefix: 1710
ARIN Region transit ASes present in the Internet Routing Table: 620
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 13
Number of ARIN addresses announced to Internet: 175378645
Equivalent to 10 /8s, 116 /16s and 16 /24s
Percentage of available ARIN address space announced: 80.4
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: 15381
Prefixes being announced from the RIPE address blocks: 12109
RIPE Region origin ASes present in the Internet Routing Table: 2684
RIPE Region origin ASes announcing only one prefix: 1345
RIPE Region transit ASes present in the Internet Routing Table: 489
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 89330179
Equivalent to 5 /8s, 83 /16s and 18 /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
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 2374 1189 Telstra
2764 434 139 connect.com.au pty ltd
2907 366 892 SINET Japan
703 364 247 UUNET Technologies, Inc.
4755 345 113 VSNL India
4740 257 16 Ozemail
7657 222 12 The Internet Group Limited
4618 208 56 Internet Thailand
9269 208 23 Hong Kong CTI
7545 204 7 TPG Internet Pty Ltd
4763 191 43 Telstra New Zealand
7474 186 84 Optus Communications
4766 177 619 KORnet Powered BY Korea Telec
4134 168 521 Data Communications Bureau
7586 135 10 Paradox Digital Pty. Ltd
3462 128 180 Data Communications Institute
4786 128 7 NetConnect Communications Pty
7496 123 9 Power Up
7617 122 46 One.Net Pty Ltd
7539 119 73 Delegated to TWNIC for subseq
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
3301 393 306 TeliaNet Sweden
702 359 487 UUNET Technologies, Inc.
1270 339 433 UUNET Germany
1257 316 248 Swipnet AB
3215 203 181 RAIN
719 192 146 LANLINK
5515 192 351 Sonera Finland
786 184 960 JANET IP Service
1849 171 290 UUNET UK (formerly PIPEX)
680 170 855 Deutschef Forschurgsnetz
3320 167 462 Deutsche Telekom AG
1942 140 53 INRIA-Rocquencourt
2856 137 394 BTnet UK Regional network
517 136 137 Xlink
3303 127 277 Swisscom
5400 110 31 Concert Internet Plus Europea
1901 103 77 EUnet Austria
1267 95 985 IUnet S.p.A
3269 94 289 TELECOM ITALIA
3259 92 88 UUNET FRANCE
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
701 2594 3614 UUNET Technologies, Inc.
1 1010 4596 BBN Planet
7018 894 3015 AT&T
1239 716 1631 Sprint ICM-Inria
7046 712 523 UUNET Technologies, Inc.
2914 623 1296 Verio, Inc.
2548 611 535 Digital Express Group, Inc.
174 593 2814 PSINet Inc.
705 566 36 UUNET Technologies, Inc.
3561 565 1303 Cable & Wireless USA
2551 530 346 NETCOM On-Line Communication
8013 525 64 PSINet Ltd. Canada
3549 522 436 Frontier GlobalCenter
4293 443 56 Cable & Wireless USA
209 430 632 Qwest
271 424 271 BCnet Backbone
3602 424 79 Sprint Canada
3908 388 280 Supernet, Inc.
6082 360 63 Management Analysis, Incorpor
8151 355 192 UniNet S.A. de C.V.
Global Per AS prefix count summary
----------------------------------
ASN No of nets /19 equiv Description
701 2594 3614 UUNET Technologies, Inc.
1221 2374 1189 Telstra
1 1010 4596 BBN Planet
7018 894 3015 AT&T
1239 716 1631 Sprint ICM-Inria
7046 712 523 UUNET Technologies, Inc.
2914 623 1296 Verio, Inc.
2548 611 535 Digital Express Group, Inc.
174 593 2814 PSINet Inc.
705 566 36 UUNET Technologies, Inc.
3561 565 1303 Cable & Wireless USA
2551 530 346 NETCOM On-Line Communication
8013 525 64 PSINet Ltd. Canada
3549 522 436 Frontier GlobalCenter
4293 443 56 Cable & Wireless USA
2764 434 139 connect.com.au pty ltd
209 430 632 Qwest
271 424 271 BCnet Backbone
3602 424 79 Sprint Canada
3301 393 306 TeliaNet Sweden
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
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,
65000 PRIVATE 199.114.36.0/24 721 DLA Systems Automati
65000 PRIVATE 199.252.48.0/24 721 DLA Systems Automati
65000 PRIVATE 199.252.50.0/24 721 DLA Systems Automati
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
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 /10:5 /11:10 /12:32
/13:61 /14:196 /15:305 /16:6796 /17:1022 /18:2023
/19:6302 /20:4461 /21:4318 /22:6502 /23:8446 /24:58136
/25:294 /26:401 /27:227 /28:187 /29:160 /30:297
/31:1 /32:222
Number of /24s announced per /8 block (Global)
----------------------------------------------
9:3 12:307 15:1 24:632 26:1 32:6
38:9 44:2 53:2 55:1 57:9 61:60
62:102 63:1589 64:1210 65:31 66:85 91:1
128:28 129:205 130:20 131:31 132:9 133:4
134:94 135:8 136:122 137:78 138:189 139:54
140:104 141:22 142:58 143:36 144:126 145:11
146:132 147:90 148:120 149:112 150:21 151:330
152:961 153:119 154:76 155:68 156:15 157:110
158:57 159:52 160:17 161:57 162:62 163:121
164:105 165:99 166:175 167:79 168:68 169:29
170:194 171:2 191:1 192:5391 193:1813 194:1985
195:768 196:395 198:3742 199:3395 200:1781 202:2447
203:5209 204:3573 205:2478 206:2843 207:3022 208:2876
209:3473 210:383 211:134 212:786 213:294 214:8
215:11 216:2717 217:90
End of report
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