Weekly Routing Table Report
Routing Analysis
cscora at dev.apnic.net
Thu Jul 5 14:06:31 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 06 Jul, 2001
Analysis Summary
----------------
BGP routing table entries examined: 103233
Origin ASes present in the Internet Routing Table: 11185
Origin ASes announcing only one prefix: 4127
Transit ASes present in the Internet Routing Table: 1520
Average AS path length visible in the Internet Routing Table: 5.5
Max AS path length visible: 17
Illegal AS announcements present in the Routing Table: 20
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 13
Number of addresses announced to Internet: 1219205911
Equivalent to 72 /8s, 171 /16s and 155 /24s
Percentage of available address space announced: 32.9
Percentage of allocated address space announced: 63.9
Percentage of available address space allocated: 51.5
Total number of prefixes smaller than registry allocations: 69965
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 15010
Prefixes being announced from the APNIC address blocks: 13571
APNIC Region origin ASes present in the Internet Routing Table: 1289
APNIC Region origin ASes announcing only one prefix: 473
APNIC Region transit ASes present in the Internet Routing Table: 224
Average APNIC Region AS path length visible: 5.8
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 71158591
Equivalent to 4 /8s, 61 /16s and 203 /24s
Percentage of available APNIC address space announced: 70.0
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: 71367
Prefixes being announced from the ARIN address blocks: 51264
ARIN Region origin ASes present in the Internet Routing Table: 6783
ARIN Region origin ASes announcing only one prefix: 2004
ARIN Region transit ASes present in the Internet Routing Table: 719
Average ARIN Region AS path length visible: 5.3
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 199350017
Equivalent to 11 /8s, 225 /16s and 215 /24s
Percentage of available ARIN address space announced: 79.2
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, 21504 - 22527
ARIN Address Blocks 24/8, 63/8, 64/6, 199/8, 200/8, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 16856
Prefixes being announced from the RIPE address blocks: 12951
RIPE Region origin ASes present in the Internet Routing Table: 3124
RIPE Region origin ASes announcing only one prefix: 1650
RIPE Region transit ASes present in the Internet Routing Table: 576
Average RIPE Region AS path length visible: 6.3
Max RIPE Region AS path length visible: 17
Number of RIPE addresses announced to Internet: 100222080
Equivalent to 5 /8s, 249 /16s and 68 /24s
Percentage of available RIPE address space announced: 66.4
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 /20 equiv Description
1221 1557 1309 Telstra
2764 435 345 connect.com.au pty ltd
703 385 382 UUNET Technologies, Inc.
2907 368 1783 SINET Japan
4755 285 165 VSNL India
7474 237 293 Optus Communications
4134 217 1555 Data Communications Bureau
4766 175 1242 KORnet Powered BY Korea Telec
7539 155 175 TANet2, sponsored by NSC, TAI
4786 145 16 NetConnect Communications Pty
7545 142 21 TPG Internet Pty Ltd
9443 132 38 INTERNETPRIMUS-AS-A
4740 117 16 Ozemail
7586 116 18 Paradox Digital Pty. Ltd
7657 115 22 The Internet Group Limited
17561 115 151 Internet service provision to
9583 111 60 Satyam Infoway Ltd.,
4713 107 869 NTT-OCNET
4732 106 358 DDI Corporation
9797 103 32 Asia Online Australia
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 656 1828 UUNET Technologies, Inc.
3301 427 918 TeliaNet Sweden
15870 427 12 Global Center Frankfurt
1257 278 504 Swipnet AB
1270 257 870 UUNET Germany
680 230 2053 Deutschef Forschurgsnetz
3215 214 495 RAIN
15878 212 8 Global Center Paris
719 186 291 LANLINK
786 184 1904 JANET IP Service
5515 175 654 Sonera Finland
3320 171 1410 Deutsche Telekom AG
8708 147 15 Romania Data System
5400 133 68 Concert Internet Plus Europea
3303 129 576 Swisscom
517 126 272 Xlink
2856 120 776 BTnet UK Regional network
1267 101 1970 IUnet S.p.A
1290 98 406 PSINet UK Ltd.
3269 92 664 TELECOM ITALIA
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2450 8067 UUNET Technologies, Inc.
7018 960 7056 AT&T
1 835 8720 BBN Planet
7046 739 1089 UUNET Technologies, Inc.
1239 655 3289 Sprint ICM-Inria
690 549 79 Merit Network
2914 518 2314 Verio, Inc.
4293 497 101 Cable & Wireless USA
209 474 1876 Qwest
3561 454 2404 Cable & Wireless USA
3491 440 378 CAIS Internet
705 424 62 UUNET Technologies, Inc.
2149 417 378 Performance Systems, Inc.
2548 412 980 Digital Express Group, Inc.
18994 410 10 Global Crossing
3908 406 582 Supernet, Inc.
3549 348 813 Global Crossing
3967 337 455 Exodus Communication
11371 331 99 Rhythms NetConnections
15290 324 358 AT&T Canada IES
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2450 8067 UUNET Technologies, Inc.
1221 1557 1309 Telstra
7018 960 7056 AT&T
1 835 8720 BBN Planet
7046 739 1089 UUNET Technologies, Inc.
702 656 1828 UUNET Technologies, Inc.
1239 655 3289 Sprint ICM-Inria
690 549 79 Merit Network
2914 518 2314 Verio, Inc.
4293 497 101 Cable & Wireless USA
209 474 1876 Qwest
3561 454 2404 Cable & Wireless USA
3491 440 378 CAIS Internet
2764 435 345 connect.com.au pty ltd
3301 427 918 TeliaNet Sweden
15870 427 12 Global Center Frankfurt
705 424 62 UUNET Technologies, Inc.
2149 417 378 Performance Systems, Inc.
2548 412 980 Digital Express Group, Inc.
18994 410 10 Global Crossing
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
17675 UNALLOCATED 61.211.160.0/20 3549 Global Crossing
17682 UNALLOCATED 61.213.16.0/20 4713 NTT-OCNET
17682 UNALLOCATED 61.213.32.0/21 4713 NTT-OCNET
2027 UNALLOCATED 150.185.128.0/18 8143 Publicom Corp.
5962 UNALLOCATED 192.41.249.0/24 721 DLA Systems Automati
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,
17674 UNALLOCATED 202.6.156.0/22 9225 Level 3 Communicatio
9700 UNALLOCATED 202.30.50.0/23 3786 DACOM Corporation
17657 UNALLOCATED 202.161.160.0/20 9653 AGNS HongKong NET
9700 UNALLOCATED 203.255.208.0/24 3786 DACOM Corporation
9700 UNALLOCATED 203.255.209.0/24 3786 DACOM Corporation
9700 UNALLOCATED 203.255.210.0/24 3786 DACOM Corporation
9700 UNALLOCATED 203.255.211.0/24 3786 DACOM Corporation
5954 UNALLOCATED 204.130.191.0/24 721 DLA Systems Automati
5979 UNALLOCATED 206.197.206.0/24 721 DLA Systems Automati
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
128.65.0.0/16 3463 ACES Research Inc
132.0.0.0/10 568 DISO-UNRRA
134.137.0.0/16 7170 AT&T Government Markets
135.0.0.0/13 10455 Lucent Technologies
137.0.0.0/13 568 DISO-UNRRA
138.94.0.0/16 1 BBN Planet
144.7.0.0/16 701 UUNET Technologies, Inc.
153.34.0.0/15 701 UUNET Technologies, Inc.
153.36.0.0/14 701 UUNET Technologies, Inc.
154.150.0.0/16 6494 IDCI
158.0.0.0/13 568 DISO-UNRRA
172.122.0.0/16 701 UUNET Technologies, Inc.
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 /8:19 /9:5 /10:6 /11:9 /12:32
/13:78 /14:212 /15:352 /16:6895 /17:1180 /18:2170
/19:6702 /20:5326 /21:4471 /22:6719 /23:8465 /24:58814
/25:169 /26:262 /27:352 /28:366 /29:309 /30:282
/31:1 /32:37
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1585 2450 UUNET Technologies, Inc.
1221 1405 1557 Telstra
7046 572 739 UUNET Technologies, Inc.
690 546 549 Merit Network
4293 480 497 Cable & Wireless USA
7018 469 960 AT&T
15870 423 427 Global Center Frankfurt
3491 415 440 CAIS Internet
702 410 656 UUNET Technologies, Inc.
18994 408 410 Global Crossing
2764 390 435 connect.com.au pty ltd
705 385 424 UUNET Technologies, Inc.
1 354 835 BBN Planet
209 350 474 Qwest
1239 336 655 Sprint ICM-Inria
11371 318 331 Rhythms NetConnections
703 314 385 UUNET Technologies, Inc.
18993 312 316 Global Crossing
2548 304 412 Digital Express Group, Inc.
3908 303 406 Supernet, Inc.
Advertised prefixes smaller than registry allocations (per /8 block)
--------------------------------------------------------------------
4:1 6:12 9:6 12:568 13:13 15:11
17:13 20:4 24:840 26:1 32:34 35:2
38:358 40:2 43:4 44:11 45:1 47:38
52:2 53:4 55:1 56:5 57:14 61:109
62:188 63:2491 64:2670 65:1205 66:733 80:15
128:60 129:201 130:54 131:63 132:40 133:1
134:235 135:12 136:36 137:176 138:278 139:84
140:194 141:225 142:113 143:98 144:179 145:31
146:192 147:178 148:204 149:131 150:60 151:265
152:812 153:38 154:4 155:145 156:94 157:154
158:100 159:102 160:81 161:134 162:162 163:221
164:169 165:238 166:255 167:155 168:201 169:53
170:434 171:20 172:1 192:15 193:2573 194:2683
195:980 198:4 199:3845 200:2693 202:3667 203:5649
204:4348 205:2896 206:3969 207:3668 208:5175 209:4051
210:719 211:255 212:1096 213:586 216:4638 217:413
218:3
End of report
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