Weekly Routing Table Report
Routing Analysis
cscora at dev.apnic.net
Thu Mar 29 13:04:03 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 30 Mar, 2001
Analysis Summary
----------------
BGP routing table entries examined: 102113
Origin ASes present in the Internet Routing Table: 10430
Origin ASes announcing only one prefix: 3741
Transit ASes present in the Internet Routing Table: 1375
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: 17
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 3
Number of addresses announced to Internet: 1214667866
Equivalent to 72 /8s, 102 /16s and 92 /24s
Percentage of available address space announced: 32.8
Percentage of allocated address space announced: 64.3
Percentage of available address space allocated: 51.0
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 15583
Prefixes being announced from the APNIC address blocks: 14173
APNIC Region origin ASes present in the Internet Routing Table: 1211
APNIC Region origin ASes announcing only one prefix: 435
APNIC Region transit ASes present in the Internet Routing Table: 198
Average APNIC Region AS path length visible: 5.1
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 69169775
Equivalent to 4 /8s, 31 /16s and 114 /24s
Percentage of available APNIC address space announced: 68.0
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: 70655
Prefixes being announced from the ARIN address blocks: 47994
ARIN Region origin ASes present in the Internet Routing Table: 6353
ARIN Region origin ASes announcing only one prefix: 1858
ARIN Region transit ASes present in the Internet Routing Table: 651
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 14
Number of ARIN addresses announced to Internet: 179855217
Equivalent to 10 /8s, 184 /16s and 95 /24s
Percentage of available ARIN address space announced: 82.5
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: 15858
Prefixes being announced from the RIPE address blocks: 12560
RIPE Region origin ASes present in the Internet Routing Table: 2866
RIPE Region origin ASes announcing only one prefix: 1448
RIPE Region transit ASes present in the Internet Routing Table: 524
Average RIPE Region AS path length visible: 6.0
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 93806295
Equivalent to 5 /8s, 151 /16s and 94 /24s
Percentage of available RIPE address space announced: 79.9
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
20480 - 21503
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 2083 692 Telstra
703 451 264 UUNET Technologies, Inc.
2764 429 139 connect.com.au pty ltd
2907 373 892 SINET Japan
4755 296 110 VSNL India
4538 244 1032 China Education and Research
9269 206 24 Hong Kong CTI
7474 195 86 Optus Communications
4134 182 603 Data Communications Bureau
4763 179 35 Telstra New Zealand
4766 178 626 KORnet Powered BY Korea Telec
1237 168 71 System Engineering Research I
7657 164 12 The Internet Group Limited
7545 150 10 TPG Internet Pty Ltd
4740 145 10 Ozemail
3462 138 205 Data Communications Institute
4786 128 7 NetConnect Communications Pty
4713 126 427 NTT-OCNET
7539 124 38 Delegated to TWNIC for subseq
7617 123 46 One.Net Pty Ltd
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
702 417 624 UUNET Technologies, Inc.
3301 395 329 TeliaNet Sweden
1257 287 248 Swipnet AB
1270 276 455 UUNET Germany
680 208 913 Deutschef Forschurgsnetz
3215 202 227 RAIN
5515 191 335 Sonera Finland
719 190 146 LANLINK
786 183 959 JANET IP Service
3320 157 454 Deutsche Telekom AG
1849 149 255 UUNET UK (formerly PIPEX)
517 128 134 Xlink
3303 124 298 Swisscom
5400 124 33 Concert Internet Plus Europea
2856 122 388 BTnet UK Regional network
8708 105 5 Romania Data System
1901 99 77 EUnet Austria
1267 98 979 IUnet S.p.A
2830 95 38 UUNET UK (formerly PIPEX)
1290 85 205 PSINet UK Ltd.
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
701 2442 3623 UUNET Technologies, Inc.
705 1183 55 UUNET Technologies, Inc.
1 968 4504 BBN Planet
7018 948 3057 AT&T
7046 803 544 UUNET Technologies, Inc.
1239 636 1600 Sprint ICM-Inria
2914 610 1222 Verio, Inc.
174 582 2777 PSINet Inc.
3561 558 1240 Cable & Wireless USA
3549 540 496 Global Crossing
4293 477 52 Cable & Wireless USA
209 450 723 Qwest
690 404 64 Merit Network
2548 397 514 Digital Express Group, Inc.
3908 378 270 Supernet, Inc.
8112 370 64 Bell Atlantic Internet Soluti
4323 338 136 Time Warner Communications, I
8151 329 191 UniNet S.A. de C.V.
11371 329 49 Rhythms NetConnections
3967 328 222 Exodus Communication
Global Per AS prefix count summary
----------------------------------
ASN No of nets /19 equiv Description
701 2442 3623 UUNET Technologies, Inc.
1221 2083 692 Telstra
705 1183 55 UUNET Technologies, Inc.
1 968 4504 BBN Planet
7018 948 3057 AT&T
7046 803 544 UUNET Technologies, Inc.
1239 636 1600 Sprint ICM-Inria
2914 610 1222 Verio, Inc.
174 582 2777 PSINet Inc.
3561 558 1240 Cable & Wireless USA
3549 540 496 Global Crossing
4293 477 52 Cable & Wireless USA
703 451 264 UUNET Technologies, Inc.
209 450 723 Qwest
2764 429 139 connect.com.au pty ltd
702 417 624 UUNET Technologies, Inc.
690 404 64 Merit Network
2548 397 514 Digital Express Group, Inc.
3301 395 329 TeliaNet Sweden
3908 378 270 Supernet, 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
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
65535 PRIVATE 203.24.169.0/24 17486 Swiftel Communicatio
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
106.1.1.0/24 5705 Sirius Solutions, Inc.
106.1.2.0/24 5705 Sirius Solutions, Inc.
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 /12:30
/13:64 /14:202 /15:328 /16:6907 /17:1108 /18:2079
/19:6515 /20:4962 /21:4391 /22:6761 /23:8638 /24:58825
/25:269 /26:345 /27:146 /28:111 /29:73 /30:160
/31:1 /32:160
Number of /24s announced per /8 block (Global)
----------------------------------------------
9:3 12:340 13:10 15:1 17:1 24:687
26:1 32:10 38:7 44:3 47:1 53:2
55:1 57:9 61:41 62:134 63:1883 64:1429
65:541 66:209 91:1 106:2 128:31 129:122
130:21 131:24 132:11 133:1 134:147 135:8
136:16 137:114 138:246 139:52 140:106 141:174
142:55 143:150 144:35 145:11 146:134 147:92
148:143 149:136 150:25 151:362 152:968 153:33
154:13 155:75 156:37 157:107 158:59 159:79
160:17 161:56 162:90 163:134 164:134 165:118
166:173 167:90 168:81 169:31 170:220 171:2
192:5350 193:1827 194:2038 195:774 196:381 198:3619
199:3364 200:1876 202:2435 203:4976 204:3374 205:2241
206:2747 207:2793 208:2932 209:3183 210:487 211:169
212:810 213:351 214:8 215:11 216:2865 217:165
End of report
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