Weekly Routing Table Report
Routing Analysis
cscora at dev.apnic.net
Thu Apr 12 14:30:40 EDT 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 13 Apr, 2001
Analysis Summary
----------------
BGP routing table entries examined: 103359
Origin ASes present in the Internet Routing Table: 10563
Origin ASes announcing only one prefix: 3791
Transit ASes present in the Internet Routing Table: 1417
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: 23
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 4
Number of addresses announced to Internet: 1238454464
Equivalent to 73 /8s, 209 /16s and 80 /24s
Percentage of available address space announced: 33.4
Percentage of allocated address space announced: 65.5
Percentage of available address space allocated: 51.0
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16123
Prefixes being announced from the APNIC address blocks: 14631
APNIC Region origin ASes present in the Internet Routing Table: 1225
APNIC Region origin ASes announcing only one prefix: 432
APNIC Region transit ASes present in the Internet Routing Table: 200
Average APNIC Region AS path length visible: 5.1
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 71027382
Equivalent to 4 /8s, 59 /16s and 202 /24s
Percentage of available APNIC address space announced: 69.8
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: 71093
Prefixes being announced from the ARIN address blocks: 48604
ARIN Region origin ASes present in the Internet Routing Table: 6428
ARIN Region origin ASes announcing only one prefix: 1891
ARIN Region transit ASes present in the Internet Routing Table: 672
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 14
Number of ARIN addresses announced to Internet: 181106981
Equivalent to 10 /8s, 203 /16s and 121 /24s
Percentage of available ARIN address space announced: 83.0
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: 16120
Prefixes being announced from the RIPE address blocks: 12783
RIPE Region origin ASes present in the Internet Routing Table: 2911
RIPE Region origin ASes announcing only one prefix: 1468
RIPE Region transit ASes present in the Internet Routing Table: 544
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 96664777
Equivalent to 5 /8s, 194 /16s and 252 /24s
Percentage of available RIPE address space announced: 82.3
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 2000 684 Telstra
2764 872 164 connect.com.au pty ltd
703 377 204 UUNET Technologies, Inc.
2907 363 884 SINET Japan
4755 300 110 VSNL India
4538 240 1022 China Education and Research
7539 218 97 Delegated to TWNIC for subseq
4766 187 770 KORnet Powered BY Korea Telec
4134 186 616 Data Communications Bureau
7474 186 85 Optus Communications
1237 163 71 System Engineering Research I
9269 160 22 Hong Kong CTI
7657 155 12 The Internet Group Limited
4740 153 10 Ozemail
17561 150 60 Internet service provision to
7545 149 10 TPG Internet Pty Ltd
4786 128 7 NetConnect Communications Pty
7617 124 46 One.Net Pty Ltd
7586 123 9 Paradox Digital Pty. Ltd
9797 122 10 Asia Online Australia
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
702 467 662 UUNET Technologies, Inc.
3301 390 337 TeliaNet Sweden
1257 278 247 Swipnet AB
1270 278 448 UUNET Germany
680 206 913 Deutschef Forschurgsnetz
3215 206 235 RAIN
719 190 146 LANLINK
5515 190 336 Sonera Finland
786 184 959 JANET IP Service
3320 159 710 Deutsche Telekom AG
517 129 135 Xlink
5400 125 33 Concert Internet Plus Europea
3303 123 298 Swisscom
2856 122 388 BTnet UK Regional network
1290 116 206 PSINet UK Ltd.
8708 115 5 Romania Data System
1849 108 224 UUNET UK (formerly PIPEX)
3352 108 241 Ibernet, Internet A
1267 97 978 IUnet S.p.A
1901 97 77 EUnet Austria
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
701 2411 3625 UUNET Technologies, Inc.
705 1390 62 UUNET Technologies, Inc.
7018 965 3194 AT&T
1 964 4497 BBN Planet
7046 824 560 UUNET Technologies, Inc.
1239 651 1638 Sprint ICM-Inria
2914 605 1211 Verio, Inc.
3561 554 1248 Cable & Wireless USA
174 529 2759 PSINet Inc.
3549 517 495 Global Crossing
4293 480 52 Cable & Wireless USA
209 449 675 Qwest
690 414 49 Merit Network
2548 398 514 Digital Express Group, Inc.
3908 382 262 Supernet, Inc.
8151 361 218 UniNet S.A. de C.V.
4323 337 136 Time Warner Communications, I
3967 335 224 Exodus Communication
8013 335 54 PSINet Ltd. Canada
11371 318 49 Rhythms NetConnections
Global Per AS prefix count summary
----------------------------------
ASN No of nets /19 equiv Description
701 2411 3625 UUNET Technologies, Inc.
1221 2000 684 Telstra
705 1390 62 UUNET Technologies, Inc.
7018 965 3194 AT&T
1 964 4497 BBN Planet
2764 872 164 connect.com.au pty ltd
7046 824 560 UUNET Technologies, Inc.
1239 651 1638 Sprint ICM-Inria
2914 605 1211 Verio, Inc.
3561 554 1248 Cable & Wireless USA
174 529 2759 PSINet Inc.
3549 517 495 Global Crossing
4293 480 52 Cable & Wireless USA
702 467 662 UUNET Technologies, Inc.
209 449 675 Qwest
690 414 49 Merit Network
2548 398 514 Digital Express Group, Inc.
3301 390 337 TeliaNet Sweden
3908 382 262 Supernet, Inc.
703 377 204 UUNET Technologies, Inc.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65130 PRIVATE 65.28.144.0/20 7017 Continental Cablevis
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,
65132 PRIVATE 202.160.247.176/28 7473 SINGTEL-IX
65132 PRIVATE 202.160.247.208/28 7473 SINGTEL-IX
65132 PRIVATE 202.160.247.224/28 7473 SINGTEL-IX
65535 PRIVATE 203.24.169.0/24 17486 Swiftel Communicatio
65132 PRIVATE 203.126.77.0/24 7473 SINGTEL-IX
65500 PRIVATE 203.166.86.0/24 10084 Western Australian I
65333 PRIVATE 203.208.131.0/24 7473 SINGTEL-IX
5555 UNALLOCATED 205.110.64.0/24 721 DLA Systems Automati
5555 UNALLOCATED 205.110.68.0/22 721 DLA Systems Automati
5555 UNALLOCATED 205.110.72.0/21 721 DLA Systems Automati
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
Advertised IANA Reserved Addresses
----------------------------------
Network Origin AS Description
106.1.1.0/24 5705 Sirius Solutions, Inc.
106.1.2.0/24 5705 Sirius Solutions, Inc.
223.255.46.0/24 6853 GLOBAL-ONE-PORTUGAL
223.255.70.0/24 6853 GLOBAL-ONE-PORTUGAL
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 /10:4 /11:10 /12:29
/13:67 /14:205 /15:330 /16:6925 /17:1127 /18:2102
/19:6576 /20:5032 /21:4440 /22:6736 /23:8682 /24:59899
/25:264 /26:374 /27:155 /28:134 /29:90 /30:93
/31:1 /32:58
Number of /24s announced per /8 block (Global)
----------------------------------------------
9:3 12:354 13:10 15:1 17:1 24:708
26:1 32:12 38:7 44:3 47:2 53:2
55:1 57:12 61:28 62:133 63:1923 64:1456
65:751 66:246 106:2 128:31 129:115 130:20
131:25 132:9 133:1 134:161 135:8 136:16
137:116 138:246 139:52 140:141 141:174 142:56
143:76 144:132 145:9 146:134 147:134 148:153
149:134 150:27 151:176 152:838 153:33 154:13
155:76 156:39 157:108 158:61 159:80 160:18
161:56 162:61 163:135 164:113 165:127 166:175
167:134 168:81 169:32 170:210 171:2 192:5397
193:1907 194:2056 195:766 196:376 198:3676 199:3382
200:1914 202:2506 203:5143 204:3358 205:2241 206:2726
207:2830 208:2915 209:3269 210:735 211:191 212:809
213:393 214:8 215:11 216:2903 217:191 223:2
End of report
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