Weekly Routing Table Report
Routing Analysis
cscora at dev.apnic.net
Thu Aug 16 14:06:00 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 17 Aug, 2001
Analysis Summary
----------------
BGP routing table entries examined: 106552
Origin ASes present in the Internet Routing Table: 11449
Origin ASes announcing only one prefix: 4195
Transit ASes present in the Internet Routing Table: 1475
Average AS path length visible in the Internet Routing Table: 5.3
Max AS path length visible: 16
Illegal AS announcements present in the Routing Table: 39
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 16
Number of addresses announced to Internet: 1224071201
Equivalent to 72 /8s, 245 /16s and 216 /24s
Percentage of available address space announced: 33.0
Percentage of allocated address space announced: 63.6
Percentage of available address space allocated: 51.9
Total number of prefixes smaller than registry allocations: 72715
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 15947
Prefixes being announced from the APNIC address blocks: 14293
APNIC Region origin ASes present in the Internet Routing Table: 1348
APNIC Region origin ASes announcing only one prefix: 458
APNIC Region transit ASes present in the Internet Routing Table: 217
Average APNIC Region AS path length visible: 5.1
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 76337609
Equivalent to 4 /8s, 140 /16s and 209 /24s
Percentage of available APNIC address space announced: 75.1
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: 73087
Prefixes being announced from the ARIN address blocks: 52878
ARIN Region origin ASes present in the Internet Routing Table: 6877
ARIN Region origin ASes announcing only one prefix: 2036
ARIN Region transit ASes present in the Internet Routing Table: 679
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 203405397
Equivalent to 12 /8s, 31 /16s and 184 /24s
Percentage of available ARIN address space announced: 75.8
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, 68/8, 199/8, 200/8, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 17514
Prefixes being announced from the RIPE address blocks: 13651
RIPE Region origin ASes present in the Internet Routing Table: 3228
RIPE Region origin ASes announcing only one prefix: 1701
RIPE Region transit ASes present in the Internet Routing Table: 579
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 105576897
Equivalent to 6 /8s, 74 /16s and 249 /24s
Percentage of available RIPE address space announced: 69.9
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, 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 1594 1316 Telstra Pty Ltd
2764 436 378 connect.com.au pty ltd
703 420 368 UUNET Technologies, Inc.
2907 376 1818 SINET Japan
4755 291 162 Videsh Sanchar Nigam Ltd. Aut
4134 236 1743 Data Communications Bureau
7474 233 289 Optus Communications Pty Ltd
4740 208 26 OzEmail ISP
7539 208 175 TANet2, sponsored by NSC, TAI
4766 179 1336 Korea Internet Exchange for "
7545 155 25 TPG Internet Pty Ltd
9443 143 39 Primus Telecommunications
4786 131 17 NetConnect Communications Pty
4763 120 69 Telstra New Zealand
9583 116 61 Satyam Infoway Ltd.,
17561 116 167 Internet service provision to
4713 114 885 NTT Communications Corporatio
4812 109 278 China Telecom (Group)
7586 109 17 Paradox Digital Pty Ltd
4732 105 372 DDI CORPORATION
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 704 1735 UUNET Technologies, Inc.
3301 432 918 TeliaNet Sweden
15870 388 12 Global Center Frankfurt
1257 277 520 SWIPnet Swedish IP Network
680 229 2069 DFN-IP service G-WiN
1270 226 861 UUNET Germany
3215 222 496 France Telecom / &Equant
15878 201 8 Global Center Paris
786 184 1890 The JANET IP Service
3320 182 1939 Deutsche Telekom AG
719 181 291 LANLINK autonomous system
5515 175 654 Sonera Finland Autonomous Sys
8708 153 19 Romania Data Systems S.A.
5400 137 66 Concert European Core Network
3303 132 576 Swisscom Ltd
2856 125 774 BTnet UK Regional network
5549 124 66 Nextra Deutschland GmbH + Co.
517 118 269 KPNQwest Germany GmbH
8503 112 3 PCNET - PCNET DATA Network
5511 109 170 France Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2313 8140 UUNET Technologies, Inc.
7018 1002 7119 AT&T
3908 891 628 Supernet, Inc.
1 885 8714 BBN Planet
2551 782 655 ICG NetAhead, Inc
7046 775 1041 UUNET Technologies, Inc.
1239 692 3234 Sprint
2914 506 2311 Verio, Inc.
690 505 78 Merit Network
209 492 2135 Qwest
4293 480 98 Cable & Wireless USA
3561 427 2414 Cable & Wireless USA
2548 390 1000 Business Internet, Inc.
2149 389 312 Performance Systems, Inc.
3549 363 818 Global Crossing
18994 360 10 Global Crossing
577 348 617 Bell Advanced Communications
3967 346 457 Exodus Communication
4323 346 318 Time Warner Communications, I
6347 335 360 SAVVIS Communications Corpora
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2313 8140 UUNET Technologies, Inc.
1221 1594 1316 Telstra Pty Ltd
7018 1002 7119 AT&T
3908 891 628 Supernet, Inc.
1 885 8714 BBN Planet
2551 782 655 ICG NetAhead, Inc
7046 775 1041 UUNET Technologies, Inc.
702 704 1735 UUNET Technologies, Inc.
1239 692 3234 Sprint
2914 506 2311 Verio, Inc.
690 505 78 Merit Network
209 492 2135 Qwest
4293 480 98 Cable & Wireless USA
2764 436 378 connect.com.au pty ltd
3301 432 918 TeliaNet Sweden
3561 427 2414 Cable & Wireless USA
703 420 368 UUNET Technologies, Inc.
2548 390 1000 Business Internet, Inc.
2149 389 312 Performance Systems, Inc.
15870 388 12 Global Center Frankfurt
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
6971 UNALLOCATED 64.42.0.0/18 2516 Kokusai Denshin Denw
6971 UNALLOCATED 64.42.0.0/17 2516 Kokusai Denshin Denw
6971 UNALLOCATED 64.42.40.0/21 2914 Verio, Inc.
6971 UNALLOCATED 64.42.48.0/21 2914 Verio, Inc.
6971 UNALLOCATED 64.42.60.0/22 2914 Verio, Inc.
6971 UNALLOCATED 64.42.72.0/21 2914 Verio, Inc.
6971 UNALLOCATED 64.42.108.0/22 2914 Verio, Inc.
6971 UNALLOCATED 64.42.112.0/20 2914 Verio, Inc.
6971 UNALLOCATED 64.87.64.0/19 2516 Kokusai Denshin Denw
2027 UNALLOCATED 150.185.128.0/18 8143 Publicom Corp.
64842 PRIVATE 161.217.144.0/24 7046 UUNET Technologies,
64842 PRIVATE 161.217.145.0/24 7046 UUNET Technologies,
6971 UNALLOCATED 192.103.229.0/24 2516 Kokusai Denshin Denw
6971 UNALLOCATED 192.103.230.0/23 2516 Kokusai Denshin Denw
6971 UNALLOCATED 192.103.232.0/22 2516 Kokusai Denshin Denw
6971 UNALLOCATED 192.103.236.0/23 2516 Kokusai Denshin Denw
6971 UNALLOCATED 192.103.237.0/24 2516 Kokusai Denshin Denw
1877 UNALLOCATED 192.108.199.0/24 1755 Ebone Transit Core
65460 PRIVATE 192.231.11.0/24 7018 AT&T
6971 UNALLOCATED 199.249.223.0/24 2516 Kokusai Denshin Denw
6971 UNALLOCATED 206.58.248.0/22 2516 Kokusai Denshin Denw
6971 UNALLOCATED 206.58.248.0/21 2516 Kokusai Denshin Denw
6971 UNALLOCATED 206.58.252.0/23 2914 Verio, Inc.
6971 UNALLOCATED 206.58.254.0/23 2914 Verio, Inc.
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
65515 PRIVATE 212.110.142.0/24 5593 CRIS-AS
6971 UNALLOCATED 216.105.192.0/20 2516 Kokusai Denshin Denw
6971 UNALLOCATED 216.121.224.0/19 2516 Kokusai Denshin Denw
6971 UNALLOCATED 216.174.192.0/21 2516 Kokusai Denshin Denw
6971 UNALLOCATED 216.174.192.0/18 2516 Kokusai Denshin Denw
6971 UNALLOCATED 216.174.200.0/23 2516 Kokusai Denshin Denw
6971 UNALLOCATED 216.174.202.0/23 2914 Verio, Inc.
6971 UNALLOCATED 216.174.204.0/22 2914 Verio, Inc.
6971 UNALLOCATED 216.174.208.0/20 2516 Kokusai Denshin Denw
6971 UNALLOCATED 216.174.232.0/21 2914 Verio, Inc.
6971 UNALLOCATED 216.174.240.0/22 2914 Verio, Inc.
6971 UNALLOCATED 216.210.128.0/18 2516 Kokusai Denshin Denw
6971 UNALLOCATED 216.210.128.0/17 2516 Kokusai Denshin Denw
6971 UNALLOCATED 216.229.96.0/20 2516 Kokusai Denshin Denw
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
82.105.0.0/16 3269 TELECOM ITALIA
82.105.128.0/17 3269 TELECOM ITALIA
128.65.0.0/16 3463 ACES Research Inc
132.0.0.0/10 568 DISO-UNRRA
134.137.0.0/16 400 Headquarters Standard Systems
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
164.233.0.0/16 6020 DISA NETWORK SERVICES
172.32.1.0/25 1221 Telstra Pty Ltd
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 /8:18 /9:5 /10:6 /11:11 /12:32
/13:83 /14:224 /15:374 /16:6936 /17:1210 /18:2293
/19:6828 /20:5586 /21:4619 /22:6843 /23:8638 /24:60633
/25:336 /26:385 /27:381 /28:385 /29:317 /30:314
/31:2 /32:93
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1451 2313 UUNET Technologies, Inc.
1221 1445 1594 Telstra Pty Ltd
3908 744 891 Supernet, Inc.
2551 679 782 ICG NetAhead, Inc
7046 602 775 UUNET Technologies, Inc.
7018 509 1002 AT&T
690 502 505 Merit Network
4293 463 480 Cable & Wireless USA
702 455 704 UUNET Technologies, Inc.
1 417 885 BBN Planet
2764 389 436 connect.com.au pty ltd
15870 384 388 Global Center Frankfurt
1239 377 692 Sprint
18994 358 360 Global Crossing
703 350 420 UUNET Technologies, Inc.
209 342 492 Qwest
11371 309 322 Rhythms NetConnections
4323 297 346 Time Warner Communications, I
18993 287 291 Global Crossing
4151 284 325 USDA
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:1 9:1 12:395 13:10 15:1 17:6
20:1 24:672 26:1 32:32 38:7 43:5
44:2 53:2 55:1 57:12 61:65 62:138
63:1897 64:1321 65:576 66:417 80:32 128:43
129:108 130:19 131:44 132:12 133:1 134:171
135:9 136:22 137:127 138:204 139:46 140:141
141:161 142:63 143:41 144:143 145:11 146:146
147:136 148:212 149:95 150:46 151:212 152:424
153:31 154:25 155:77 156:82 157:115 158:73
159:65 160:42 161:60 162:72 163:160 164:122
165:91 166:185 167:140 168:120 169:34 170:276
171:2 192:5440 193:1920 194:2048 195:812 196:396
198:3758 199:3395 200:2382 201:1 202:2739 203:4580
204:3514 205:2376 206:2958 207:2737 208:3085 209:3119
210:525 211:126 212:792 213:460 214:9 215:13
216:3050 217:392 218:2
End of report
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