Weekly Routing Table Report
Routing Analysis
cscora at dev.apnic.net
Thu May 3 14:04:36 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 04 May, 2001
Analysis Summary
----------------
BGP routing table entries examined: 103810
Origin ASes present in the Internet Routing Table: 10703
Origin ASes announcing only one prefix: 3895
Transit ASes present in the Internet Routing Table: 1444
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: 15
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 1
Number of addresses announced to Internet: 1246077232
Equivalent to 74 /8s, 69 /16s and 161 /24s
Percentage of available address space announced: 33.6
Percentage of allocated address space announced: 64.8
Percentage of available address space allocated: 51.9
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 15211
Prefixes being announced from the APNIC address blocks: 13775
APNIC Region origin ASes present in the Internet Routing Table: 1213
APNIC Region origin ASes announcing only one prefix: 437
APNIC Region transit ASes present in the Internet Routing Table: 206
Average APNIC Region AS path length visible: 5.1
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 70563339
Equivalent to 4 /8s, 52 /16s and 182 /24s
Percentage of available APNIC address space announced: 69.4
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: 71945
Prefixes being announced from the ARIN address blocks: 49729
ARIN Region origin ASes present in the Internet Routing Table: 6532
ARIN Region origin ASes announcing only one prefix: 1948
ARIN Region transit ASes present in the Internet Routing Table: 691
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 14
Number of ARIN addresses announced to Internet: 186557918
Equivalent to 11 /8s, 30 /16s and 165 /24s
Percentage of available ARIN address space announced: 85.5
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: 16639
Prefixes being announced from the RIPE address blocks: 12919
RIPE Region origin ASes present in the Internet Routing Table: 2956
RIPE Region origin ASes announcing only one prefix: 1508
RIPE Region transit ASes present in the Internet Routing Table: 546
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 97641033
Equivalent to 5 /8s, 209 /16s and 226 /24s
Percentage of available RIPE address space announced: 64.7
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, 80/7, 193/8, 194/7, 212/7 and 217/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /19 equiv Description
1221 1789 700 Telstra
2764 432 147 connect.com.au pty ltd
703 385 204 UUNET Technologies, Inc.
2907 361 875 SINET Japan
4755 315 110 VSNL India
4538 243 1056 China Education and Research
7539 213 97 Delegated to TWNIC for subseq
4134 194 632 Data Communications Bureau
7474 190 85 Optus Communications
7657 180 13 The Internet Group Limited
1237 154 70 System Engineering Research I
7545 153 10 TPG Internet Pty Ltd
17561 151 61 Internet service provision to
4740 150 10 Ozemail
4766 146 597 KORnet Powered BY Korea Telec
4786 128 7 NetConnect Communications Pty
9394 122 19 CHINA RAILWAY TELECOMMUNICATI
9443 122 22 INTERNETPRIMUS-AS-A
7586 121 9 Paradox Digital Pty. Ltd
7617 121 46 One.Net Pty Ltd
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
702 540 801 UUNET Technologies, Inc.
15870 458 3 Global Center Frankfurt
3301 390 401 TeliaNet Sweden
1257 278 263 Swipnet AB
1270 265 440 UUNET Germany
680 213 946 Deutschef Forschurgsnetz
3215 209 221 RAIN
5515 190 336 Sonera Finland
719 189 146 LANLINK
786 185 952 JANET IP Service
3320 161 710 Deutsche Telekom AG
517 129 136 Xlink
5400 128 33 Concert Internet Plus Europea
3303 122 296 Swisscom
2856 121 396 BTnet UK Regional network
8708 121 7 Romania Data System
1290 102 204 PSINet UK Ltd.
1267 100 978 IUnet S.p.A
1901 92 77 EUnet Austria
1849 89 79 UUNET UK (formerly PIPEX)
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /19 equiv Description
701 2342 4448 UUNET Technologies, Inc.
705 1138 54 UUNET Technologies, Inc.
7018 980 3233 AT&T
1 958 4464 BBN Planet
7046 798 564 UUNET Technologies, Inc.
1239 626 1605 Sprint ICM-Inria
2914 598 1187 Verio, Inc.
3561 545 1224 Cable & Wireless USA
18994 524 6 Crossing
3549 501 515 Global Crossing
4293 475 51 Cable & Wireless USA
209 447 718 Qwest
174 428 2696 PSINet Inc.
2548 407 506 Digital Express Group, Inc.
690 391 49 Merit Network
8151 366 228 UniNet S.A. de C.V.
3908 354 268 Supernet, Inc.
3602 346 72 Sprint Canada
3967 339 228 Exodus Communication
4323 337 136 Time Warner Communications, I
Global Per AS prefix count summary
----------------------------------
ASN No of nets /19 equiv Description
701 2342 4448 UUNET Technologies, Inc.
1221 1789 700 Telstra
705 1138 54 UUNET Technologies, Inc.
7018 980 3233 AT&T
1 958 4464 BBN Planet
7046 798 564 UUNET Technologies, Inc.
1239 626 1605 Sprint ICM-Inria
2914 598 1187 Verio, Inc.
3561 545 1224 Cable & Wireless USA
702 540 801 UUNET Technologies, Inc.
18994 524 6 Crossing
3549 501 515 Global Crossing
4293 475 51 Cable & Wireless USA
15870 458 3 Global Center Frankfurt
209 447 718 Qwest
2764 432 147 connect.com.au pty ltd
174 428 2696 PSINet Inc.
2548 407 506 Digital Express Group, Inc.
690 391 49 Merit Network
3301 390 401 TeliaNet Sweden
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
60002 RESERVED 64.76.148.0/24 19583 CHILE S.A.
2027 UNALLOCATED 150.185.128.0/18 8143 Publicom Corp.
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,
60002 RESERVED 200.9.98.0/24 6429 RdC Internet
60002 RESERVED 200.9.99.0/24 6429 RdC Internet
65535 PRIVATE 203.24.169.0/24 17486 Swiftel Communicatio
65500 PRIVATE 203.166.86.0/24 10084 Western Australian I
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
201.115.100.0/24 7018 AT&T
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 /12:29
/13:71 /14:203 /15:333 /16:6925 /17:1145 /18:2113
/19:6618 /20:5147 /21:4456 /22:6752 /23:8628 /24:59263
/25:274 /26:441 /27:361 /28:378 /29:323 /30:246
/31:1 /32:62
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:1 9:3 12:351 13:10 15:1 17:2
24:681 26:1 32:12 38:7 44:3 47:1
53:2 55:1 57:10 61:29 62:123 63:1914
64:1527 65:478 66:315 128:36 129:117 130:21
131:25 132:9 133:1 134:166 135:11 136:17
137:120 138:246 139:49 140:140 141:164 142:60
143:41 144:131 145:9 146:132 147:134 148:170
149:125 150:28 151:300 152:726 153:34 154:17
155:78 156:41 157:107 158:171 159:76 160:27
161:58 162:61 163:134 164:81 165:129 166:178
167:134 168:81 169:34 170:261 171:2 192:5384
193:1965 194:2075 195:779 196:401 198:3618 199:3377
200:1991 201:1 202:2418 203:4788 204:3342 205:2242
206:2766 207:2842 208:2950 209:3125 210:492 211:151
212:827 213:386 214:9 215:11 216:2966 217:203
End of report
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