Weekly Routing Table Report
Routing Analysis
cscora at dev.apnic.net
Thu Feb 15 13:03:45 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 Feb, 2001
Analysis Summary
----------------
BGP routing table entries examined: 101368
Origin ASes present in the Internet Routing Table: 9972
Origin ASes announcing only one prefix: 3547
Transit ASes present in the Internet Routing Table: 1315
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: 18
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: 1226430539
Equivalent to 73 /8s, 25 /16s and 216 /24s
Percentage of available address space announced: 33.1
Percentage of allocated address space announced: 64.9
Percentage of available address space allocated: 51.0
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 15764
Prefixes being announced from the APNIC address blocks: 14074
APNIC Region origin ASes present in the Internet Routing Table: 1151
APNIC Region origin ASes announcing only one prefix: 416
APNIC Region transit ASes present in the Internet Routing Table: 189
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 70018996
Equivalent to 4 /8s, 44 /16s and 103 /24s
Percentage of available APNIC address space announced: 68.8
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: 70049
Prefixes being announced from the ARIN address blocks: 47710
ARIN Region origin ASes present in the Internet Routing Table: 6078
ARIN Region origin ASes announcing only one prefix: 1760
ARIN Region transit ASes present in the Internet Routing Table: 626
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 13
Number of ARIN addresses announced to Internet: 177616408
Equivalent to 10 /8s, 150 /16s and 54 /24s
Percentage of available ARIN address space announced: 81.4
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: 15537
Prefixes being announced from the RIPE address blocks: 12279
RIPE Region origin ASes present in the Internet Routing Table: 2739
RIPE Region origin ASes announcing only one prefix: 1367
RIPE Region transit ASes present in the Internet Routing Table: 498
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 106915490
Equivalent to 6 /8s, 95 /16s and 102 /24s
Percentage of available RIPE address space announced: 91.0
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 2423 1190 Telstra
2764 422 139 connect.com.au pty ltd
2907 376 909 SINET Japan
703 370 244 UUNET Technologies, Inc.
4755 303 108 VSNL India
4740 255 16 Ozemail
4618 211 56 Internet Thailand
9269 209 24 Hong Kong CTI
7545 204 7 TPG Internet Pty Ltd
4538 203 973 China Education and Research
7657 203 12 The Internet Group Limited
7474 194 87 Optus Communications
4763 187 43 Telstra New Zealand
4134 173 547 Data Communications Bureau
4766 171 619 KORnet Powered BY Korea Telec
3462 137 205 Data Communications Institute
4786 134 8 NetConnect Communications Pty
7586 132 10 Paradox Digital Pty. Ltd
7539 129 86 Delegated to TWNIC for subseq
7496 128 9 Power Up
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
702 417 606 UUNET Technologies, Inc.
3301 401 322 TeliaNet Sweden
1257 317 240 Swipnet AB
1270 270 433 UUNET Germany
3215 268 183 RAIN
680 200 888 Deutschef Forschurgsnetz
719 191 146 LANLINK
786 184 960 JANET IP Service
5515 168 318 Sonera Finland
3320 167 462 Deutsche Telekom AG
1849 152 271 UUNET UK (formerly PIPEX)
1942 140 53 GIP Renater
517 135 137 Xlink
2856 133 390 BTnet UK Regional network
3303 129 277 Swisscom
5400 111 31 Concert Internet Plus Europea
1901 104 77 EUnet Austria
1267 99 986 IUnet S.p.A
2830 87 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 2691 3652 UUNET Technologies, Inc.
1 1020 4583 BBN Planet
7018 924 3025 AT&T
7046 742 551 UUNET Technologies, Inc.
705 692 40 UUNET Technologies, Inc.
1239 685 1580 Sprint ICM-Inria
8013 618 71 PSINet Ltd. Canada
2914 613 1272 Verio, Inc.
174 603 2810 PSINet Inc.
3561 570 1299 Cable & Wireless USA
3549 542 506 Frontier GlobalCenter
2551 500 345 NETCOM On-Line Communication
4293 475 58 Cable & Wireless USA
209 463 656 Qwest
271 437 273 BCnet Backbone
2548 395 523 Digital Express Group, Inc.
3908 393 280 Supernet, Inc.
8151 361 193 UniNet S.A. de C.V.
6082 359 63 Management Analysis, Incorpor
11371 324 49 Rhythms NetConnections
Global Per AS prefix count summary
----------------------------------
ASN No of nets /19 equiv Description
701 2691 3652 UUNET Technologies, Inc.
1221 2423 1190 Telstra
1 1020 4583 BBN Planet
7018 924 3025 AT&T
7046 742 551 UUNET Technologies, Inc.
705 692 40 UUNET Technologies, Inc.
1239 685 1580 Sprint ICM-Inria
8013 618 71 PSINet Ltd. Canada
2914 613 1272 Verio, Inc.
174 603 2810 PSINet Inc.
3561 570 1299 Cable & Wireless USA
3549 542 506 Frontier GlobalCenter
2551 500 345 NETCOM On-Line Communication
4293 475 58 Cable & Wireless USA
209 463 656 Qwest
271 437 273 BCnet Backbone
2764 422 139 connect.com.au pty ltd
702 417 606 UUNET Technologies, Inc.
3301 401 322 TeliaNet Sweden
2548 395 523 Digital Express Group, 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,
5429 UNALLOCATED 195.178.208.0/21 12690 MKS Autonomous Syste
17408 UNALLOCATED 202.133.224.0/19 3462 Data Communications
17411 UNALLOCATED 202.137.32.0/21 703 UUNET Technologies,
17408 UNALLOCATED 203.163.192.0/19 3462 Data Communications
65500 PRIVATE 203.166.86.0/24 10084 Western Australian I
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
65400 PRIVATE 213.161.78.0/24 6461 AboveNet Communicati
Advertised IANA Reserved Addresses
----------------------------------
Network Origin AS Description
39.96.40.224/30 14408 iCAIR
91.16.23.0/24 11770 Net56
103.22.7.0/24 9768 PubNet (Korea Telecom)
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:22 /9:4 /10:5 /11:10 /12:32
/13:62 /14:196 /15:308 /16:6865 /17:1047 /18:2047
/19:6352 /20:4667 /21:4339 /22:6531 /23:8537 /24:59027
/25:273 /26:346 /27:149 /28:108 /29:103 /30:203
/31:0 /32:135
Number of /24s announced per /8 block (Global)
----------------------------------------------
9:3 12:313 13:10 15:1 17:1 24:661
26:1 32:7 38:8 44:3 53:2 55:1
57:9 61:44 62:121 63:1749 64:1307 65:84
66:118 91:1 103:1 128:42 129:173 130:20
131:31 132:10 133:3 134:104 135:8 136:117
137:144 138:189 139:55 140:110 141:44 142:55
143:39 144:189 145:9 146:133 147:55 148:121
149:117 150:25 151:333 152:973 153:35 154:77
155:73 156:15 157:109 158:56 159:61 160:16
161:56 162:60 163:130 164:131 165:107 166:174
167:87 168:72 169:31 170:203 171:2 192:5403
193:1831 194:2016 195:779 196:391 198:3750 199:3432
200:1817 202:2402 203:5236 204:3728 205:2496 206:2765
207:3071 208:2948 209:3395 210:395 211:141 212:829
213:300 214:7 215:11 216:2731 217:114
End of report
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