Weekly Routing Table Report
Routing Analysis
cscora at dev.apnic.net
Thu Oct 25 14:05:42 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 26 Oct, 2001
Analysis Summary
----------------
BGP routing table entries examined: 109470
Origin ASes present in the Internet Routing Table: 11961
Origin ASes announcing only one prefix: 4434
Transit ASes present in the Internet Routing Table: 1580
Average AS path length visible in the Internet Routing Table: 5.3
Max AS path length visible: 17
Illegal AS announcements present in the Routing Table: 50
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 15
Number of addresses announced to Internet: 1255266365
Equivalent to 74 /8s, 209 /16s and 216 /24s
Percentage of available address space announced: 33.9
Percentage of allocated address space announced: 64.6
Percentage of available address space allocated: 52.4
Total number of prefixes smaller than registry allocations: 74577
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16784
Prefixes being announced from the APNIC address blocks: 15268
APNIC Region origin ASes present in the Internet Routing Table: 1382
APNIC Region origin ASes announcing only one prefix: 459
APNIC Region transit ASes present in the Internet Routing Table: 240
Average APNIC Region AS path length visible: 5.1
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 83195575
Equivalent to 4 /8s, 245 /16s and 118 /24s
Percentage of available APNIC address space announced: 70.2
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239
17408 - 18431, 23552 - 24575
APNIC Address Blocks 61/8, 202/7, 210/7 and 218/7
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 74655
Prefixes being announced from the ARIN address blocks: 53426
ARIN Region origin ASes present in the Internet Routing Table: 7182
ARIN Region origin ASes announcing only one prefix: 2161
ARIN Region transit ASes present in the Internet Routing Table: 733
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 219300485
Equivalent to 13 /8s, 18 /16s and 66 /24s
Percentage of available ARIN address space announced: 81.7
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 - 23551
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: 18031
Prefixes being announced from the RIPE address blocks: 14444
RIPE Region origin ASes present in the Internet Routing Table: 3401
RIPE Region origin ASes announcing only one prefix: 1814
RIPE Region transit ASes present in the Internet Routing Table: 606
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 109440750
Equivalent to 6 /8s, 133 /16s and 238 /24s
Percentage of available RIPE address space announced: 72.5
RIPE AS Blocks 1877 - 1901, 2043, 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 1574 1307 Telstra Pty Ltd
2764 408 359 connect.com.au pty ltd
703 377 361 UUNET Technologies, Inc.
2907 374 1865 SINET Japan
4755 300 163 Videsh Sanchar Nigam Ltd. Aut
7474 292 274 Optus Communications Pty Ltd
4134 251 1881 Data Communications Bureau
4766 186 1466 Korea Internet Exchange for "
4740 173 26 OzEmail ISP
1659 172 1173 Taiwan Academic Network (TANe
7539 162 157 TANet2, sponsored by NSC, TAI
9443 160 52 Primus Telecommunications
17557 143 9 Pakistan Telecom
2521 139 171 PSINet Japan
4812 132 298 China Telecom (Group)
9768 131 363 Korea Telecom
4786 123 14 NetConnect Communications Pty
9583 123 53 Satyam Infoway Ltd.,
4763 121 69 Telstra New Zealand
4713 118 901 NTT Communications Corporatio
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 941 1943 UUNET Technologies, Inc.
3301 435 950 TeliaNet Sweden
1257 273 516 SWIPnet Swedish IP Network
680 241 2309 DFN-IP service G-WiN
3215 236 539 France Telecom / &Equant
5515 195 688 Sonera Finland Autonomous Sys
3320 193 1941 Deutsche Telekom AG
786 185 1890 The JANET IP Service
8708 164 17 Romania Data Systems S.A.
5495 162 3 University Network
15870 141 10 Global Center Frankfurt
5400 139 64 Concert European Core Network
719 133 289 LANLINK autonomous system
3303 130 560 Swisscom Ltd
2856 129 776 BTnet UK Regional network
1270 127 724 UUNET Germany
5549 124 82 Nextra Deutschland GmbH + Co.
1103 119 3974 SURFnet BV
15878 115 9 Global Center Paris
517 112 252 KPNQwest Germany GmbH
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2279 9099 UUNET Technologies, Inc.
3908 1175 1691 Supernet, Inc.
7018 1077 7325 AT&T
7046 863 1024 UUNET Technologies, Inc.
1 849 8541 BBN Planet
1239 733 3242 Sprint
209 576 2238 Qwest
3967 542 461 Exodus Communication
690 507 74 Merit Network
2914 470 2265 Verio, Inc.
4293 450 113 Cable & Wireless USA
2149 410 329 Performance Systems, Inc.
3561 403 2350 Cable & Wireless USA
4323 402 372 Time Warner Communications, I
3549 387 843 Global Crossing
577 353 636 Bell Advanced Communications
705 352 64 UUNET Technologies, Inc.
15290 343 339 AT&T Canada IES
3741 342 757 The Internet Solution
4151 337 1250 USDA
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2279 9099 UUNET Technologies, Inc.
1221 1574 1307 Telstra Pty Ltd
3908 1175 1691 Supernet, Inc.
7018 1077 7325 AT&T
702 941 1943 UUNET Technologies, Inc.
7046 863 1024 UUNET Technologies, Inc.
1 849 8541 BBN Planet
1239 733 3242 Sprint
209 576 2238 Qwest
3967 542 461 Exodus Communication
690 507 74 Merit Network
2914 470 2265 Verio, Inc.
4293 450 113 Cable & Wireless USA
3301 435 950 TeliaNet Sweden
2149 410 329 Performance Systems, Inc.
2764 408 359 connect.com.au pty ltd
3561 403 2350 Cable & Wireless USA
4323 402 372 Time Warner Communications, I
3549 387 843 Global Crossing
703 377 361 UUNET Technologies, Inc.
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 64.42.16.0/20 2914 Verio, Inc.
6971 UNALLOCATED 64.42.32.0/21 2914 Verio, Inc.
6971 UNALLOCATED 64.42.40.0/21 2914 Verio, Inc.
6971 UNALLOCATED 64.42.48.0/21 2914 Verio, Inc.
6971 UNALLOCATED 64.42.56.0/22 2914 Verio, Inc.
6971 UNALLOCATED 64.42.60.0/22 2914 Verio, Inc.
6971 UNALLOCATED 64.42.64.0/21 2914 Verio, Inc.
6971 UNALLOCATED 64.42.72.0/21 2914 Verio, Inc.
6971 UNALLOCATED 64.42.80.0/21 2914 Verio, Inc.
6971 UNALLOCATED 64.42.104.0/22 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
22141 UNALLOCATED 65.208.26.0/23 701 UUNET Technologies,
2027 UNALLOCATED 150.185.128.0/18 8143 Publicom Corp.
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
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,
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 216.174.200.0/21 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 216.210.128.0/18 2516 Kokusai Denshin Denw
6971 UNALLOCATED 216.210.128.0/17 2516 Kokusai Denshin Denw
6971 UNALLOCATED 216.210.140.0/22 2914 Verio, Inc.
6971 UNALLOCATED 216.210.160.0/21 2914 Verio, Inc.
6971 UNALLOCATED 216.210.176.0/21 2914 Verio, Inc.
6971 UNALLOCATED 216.210.184.0/22 2914 Verio, Inc.
6971 UNALLOCATED 216.210.200.0/22 2914 Verio, Inc.
6971 UNALLOCATED 216.210.216.0/22 2914 Verio, Inc.
6971 UNALLOCATED 216.210.220.0/22 2914 Verio, Inc.
6971 UNALLOCATED 216.210.224.0/21 2914 Verio, Inc.
6971 UNALLOCATED 216.210.232.0/22 2914 Verio, Inc.
6971 UNALLOCATED 216.210.236.0/22 2914 Verio, Inc.
6971 UNALLOCATED 216.210.240.0/20 2914 Verio, Inc.
6971 UNALLOCATED 216.229.96.0/20 2516 Kokusai Denshin Denw
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
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
164.235.0.0/16 6025 US DOD NIC Unregistered
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 /10:7 /11:12 /12:34
/13:89 /14:227 /15:392 /16:7025 /17:1311 /18:2434
/19:7064 /20:6020 /21:4830 /22:7179 /23:9217 /24:61749
/25:346 /26:348 /27:294 /28:312 /29:162 /30:203
/31:1 /32:191
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1459 2279 UUNET Technologies, Inc.
1221 1429 1574 Telstra Pty Ltd
3908 891 1175 Supernet, Inc.
7046 685 863 UUNET Technologies, Inc.
702 639 941 UUNET Technologies, Inc.
7018 567 1077 AT&T
690 504 507 Merit Network
4293 435 450 Cable & Wireless USA
1 410 849 BBN Planet
209 409 576 Qwest
1239 407 733 Sprint
3967 369 542 Exodus Communication
2764 363 408 connect.com.au pty ltd
4323 339 402 Time Warner Communications, I
5102 322 335 Ameritech Advanced Data Servi
703 309 377 UUNET Technologies, Inc.
705 299 352 UUNET Technologies, Inc.
11371 297 308 Rhythms NetConnections
4151 294 337 USDA
2149 286 410 Performance Systems, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:5 9:1 12:431 13:10 15:1 17:5
20:1 24:818 25:1 26:1 32:75 38:13
43:2 44:2 47:2 52:1 53:2 57:13
61:106 62:155 63:1956 64:1355 65:876 66:505
67:3 80:73 128:52 129:108 130:26 131:47
132:13 133:2 134:132 135:8 136:106 137:108
138:194 139:51 140:201 141:56 142:62 143:39
144:145 145:13 146:229 147:129 148:219 149:88
150:44 151:190 152:383 153:51 154:22 155:84
156:85 157:111 158:73 159:70 160:46 161:60
162:70 163:161 164:117 165:127 166:208 167:157
168:122 169:40 170:287 171:2 192:5432 193:2007
194:2096 195:838 196:460 198:3793 199:3520 200:2458
201:1 202:2822 203:4555 204:3384 205:2206 206:2864
207:2619 208:3039 209:3114 210:592 211:150 212:893
213:527 214:9 215:16 216:2989 217:412 218:2
End of report
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