Weekly Routing Table Report
Routing Analysis
cscora at dev.apnic.net
Thu Feb 1 13:04:51 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 02 Feb, 2001
Analysis Summary
----------------
BGP routing table entries examined: 100908
Origin ASes present in the Internet Routing Table: 9827
Origin ASes announcing only one prefix: 3489
Transit ASes present in the Internet Routing Table: 1316
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: 17
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: 1202892915
Equivalent to 71 /8s, 178 /16s and 176 /24s
Percentage of available address space announced: 32.5
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: 15560
Prefixes being announced from the APNIC address blocks: 13998
APNIC Region origin ASes present in the Internet Routing Table: 1142
APNIC Region origin ASes announcing only one prefix: 406
APNIC Region transit ASes present in the Internet Routing Table: 187
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 12
Number of APNIC addresses announced to Internet: 65649152
Equivalent to 3 /8s, 233 /16s and 186 /24s
Percentage of available APNIC address space announced: 64.5
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: 69861
Prefixes being announced from the ARIN address blocks: 47377
ARIN Region origin ASes present in the Internet Routing Table: 5985
ARIN Region origin ASes announcing only one prefix: 1732
ARIN Region transit ASes present in the Internet Routing Table: 628
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 13
Number of ARIN addresses announced to Internet: 175815311
Equivalent to 10 /8s, 122 /16s and 186 /24s
Percentage of available ARIN address space announced: 80.6
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: 15470
Prefixes being announced from the RIPE address blocks: 12207
RIPE Region origin ASes present in the Internet Routing Table: 2698
RIPE Region origin ASes announcing only one prefix: 1349
RIPE Region transit ASes present in the Internet Routing Table: 499
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 89469667
Equivalent to 5 /8s, 85 /16s and 50 /24s
Percentage of available RIPE address space announced: 76.2
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 2384 1189 Telstra
2764 436 139 connect.com.au pty ltd
703 416 250 UUNET Technologies, Inc.
2907 366 892 SINET Japan
4755 312 110 VSNL India
7657 217 12 The Internet Group Limited
9269 209 24 Hong Kong CTI
4618 207 56 Internet Thailand
4740 207 13 Ozemail
7545 205 7 TPG Internet Pty Ltd
7474 191 90 Optus Communications
4763 190 43 Telstra New Zealand
4766 175 619 KORnet Powered BY Korea Telec
4134 169 523 Data Communications Bureau
7586 135 10 Paradox Digital Pty. Ltd
3462 131 181 Data Communications Institute
4786 129 7 NetConnect Communications Pty
7496 124 9 Power Up
7617 122 46 One.Net Pty Ltd
9797 122 10 Asia Online Australia
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
3301 392 306 TeliaNet Sweden
702 367 490 UUNET Technologies, Inc.
1270 333 432 UUNET Germany
1257 314 240 Swipnet AB
3215 204 180 RAIN
719 193 146 LANLINK
5515 193 359 Sonera Finland
680 188 864 Deutschef Forschurgsnetz
786 184 960 JANET IP Service
3320 166 462 Deutsche Telekom AG
1849 162 280 UUNET UK (formerly PIPEX)
1942 140 53 GIP Renater
2856 138 394 BTnet UK Regional network
517 134 137 Xlink
3303 128 277 Swisscom
5400 110 32 Concert Internet Plus Europea
1901 103 77 EUnet Austria
1267 98 986 IUnet S.p.A
3259 95 88 UUNET FRANCE
2830 83 30 UUNET UK (formerly PIPEX)
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
701 2608 3599 UUNET Technologies, Inc.
1 1009 4612 BBN Planet
7018 913 3017 AT&T
7046 730 542 UUNET Technologies, Inc.
1239 695 1589 Sprint ICM-Inria
2914 614 1289 Verio, Inc.
174 597 2806 PSINet Inc.
705 597 37 UUNET Technologies, Inc.
3561 565 1306 Cable & Wireless USA
2548 543 523 Digital Express Group, Inc.
3549 537 441 Frontier GlobalCenter
8013 523 64 PSINet Ltd. Canada
2551 504 345 NETCOM On-Line Communication
4293 449 57 Cable & Wireless USA
209 433 633 Qwest
271 424 271 BCnet Backbone
3908 386 280 Supernet, Inc.
6082 359 63 Management Analysis, Incorpor
8151 357 192 UniNet S.A. de C.V.
11371 324 49 Rhythms NetConnections
Global Per AS prefix count summary
----------------------------------
ASN No of nets /19 equiv Description
701 2608 3599 UUNET Technologies, Inc.
1221 2384 1189 Telstra
1 1009 4612 BBN Planet
7018 913 3017 AT&T
7046 730 542 UUNET Technologies, Inc.
1239 695 1589 Sprint ICM-Inria
2914 614 1289 Verio, Inc.
174 597 2806 PSINet Inc.
705 597 37 UUNET Technologies, Inc.
3561 565 1306 Cable & Wireless USA
2548 543 523 Digital Express Group, Inc.
3549 537 441 Frontier GlobalCenter
8013 523 64 PSINet Ltd. Canada
2551 504 345 NETCOM On-Line Communication
4293 449 57 Cable & Wireless USA
2764 436 139 connect.com.au pty ltd
209 433 633 Qwest
271 424 271 BCnet Backbone
703 416 250 UUNET Technologies, Inc.
3301 392 306 TeliaNet Sweden
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65535 PRIVATE 63.140.210.0/23 5696 WINSTAR
65535 PRIVATE 63.140.240.0/24 5696 WINSTAR
65535 PRIVATE 63.140.241.0/24 5696 WINSTAR
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,
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
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 /15:306 /16:6807 /17:1025 /18:2025
/19:6319 /20:4543 /21:4291 /22:6497 /23:8428 /24:58495
/25:297 /26:399 /27:230 /28:220 /29:154 /30:321
/31:1 /32:221
Number of /24s announced per /8 block (Global)
----------------------------------------------
9:3 12:302 15:1 24:625 26:1 32:6
38:9 44:2 53:2 55:1 57:9 61:60
62:126 63:1637 64:1200 65:43 66:111 91:1
128:33 129:231 130:20 131:31 132:9 133:4
134:104 135:8 136:123 137:144 138:189 139:51
140:102 141:138 142:58 143:38 144:126 145:11
146:132 147:90 148:120 149:115 150:23 151:331
152:959 153:62 154:76 155:71 156:15 157:108
158:56 159:56 160:18 161:57 162:61 163:125
164:105 165:101 166:174 167:82 168:69 169:30
170:207 171:2 192:5419 193:1822 194:2013 195:756
196:394 198:3749 199:3419 200:1810 202:2448 203:5211
204:3572 205:2461 206:2817 207:2997 208:2881 209:3419
210:382 211:136 212:817 213:305 214:8 215:11
216:2747 217:97
End of report
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