Weekly Routing Table Report
Routing Analysis
cscora at dev.apnic.net
Thu Aug 23 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 24 Aug, 2001
Analysis Summary
----------------
BGP routing table entries examined: 106866
Origin ASes present in the Internet Routing Table: 11494
Origin ASes announcing only one prefix: 4222
Transit ASes present in the Internet Routing Table: 1480
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: 40
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: 1228285731
Equivalent to 73 /8s, 54 /16s and 39 /24s
Percentage of available address space announced: 33.1
Percentage of allocated address space announced: 63.8
Percentage of available address space allocated: 51.9
Total number of prefixes smaller than registry allocations: 72884
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 15986
Prefixes being announced from the APNIC address blocks: 14353
APNIC Region origin ASes present in the Internet Routing Table: 1356
APNIC Region origin ASes announcing only one prefix: 463
APNIC Region transit ASes present in the Internet Routing Table: 223
Average APNIC Region AS path length visible: 5.1
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 76799457
Equivalent to 4 /8s, 147 /16s and 221 /24s
Percentage of available APNIC address space announced: 75.5
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: 73503
Prefixes being announced from the ARIN address blocks: 53311
ARIN Region origin ASes present in the Internet Routing Table: 6914
ARIN Region origin ASes announcing only one prefix: 2058
ARIN Region transit ASes present in the Internet Routing Table: 692
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 13
Number of ARIN addresses announced to Internet: 206246788
Equivalent to 12 /8s, 75 /16s and 19 /24s
Percentage of available ARIN address space announced: 76.8
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: 17373
Prefixes being announced from the RIPE address blocks: 13566
RIPE Region origin ASes present in the Internet Routing Table: 3229
RIPE Region origin ASes announcing only one prefix: 1701
RIPE Region transit ASes present in the Internet Routing Table: 565
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 106133996
Equivalent to 6 /8s, 83 /16s and 121 /24s
Percentage of available RIPE address space announced: 70.3
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 1591 1315 Telstra Pty Ltd
2764 433 378 connect.com.au pty ltd
703 419 367 UUNET Technologies, Inc.
2907 368 1816 SINET Japan
4755 298 163 Videsh Sanchar Nigam Ltd. Aut
4134 240 1743 Data Communications Bureau
7474 232 289 Optus Communications Pty Ltd
7539 205 175 TANet2, sponsored by NSC, TAI
4740 203 25 OzEmail ISP
4766 188 1361 Korea Internet Exchange for "
7545 150 25 TPG Internet Pty Ltd
9443 145 39 Primus Telecommunications
4786 131 17 NetConnect Communications Pty
4763 120 69 Telstra New Zealand
17561 116 167 Internet service provision to
4713 114 869 NTT Communications Corporatio
9583 113 61 Satyam Infoway Ltd.,
7586 110 17 Paradox Digital Pty Ltd
4812 109 278 China Telecom (Group)
7657 107 22 The Internet Group Limited
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 707 1732 UUNET Technologies, Inc.
3301 431 917 TeliaNet Sweden
15870 377 12 Global Center Frankfurt
1257 278 521 SWIPnet Swedish IP Network
680 232 2261 DFN-IP service G-WiN
1270 220 845 UUNET Germany
3215 218 511 France Telecom / &Equant
5515 193 672 Sonera Finland Autonomous Sys
786 184 1890 The JANET IP Service
3320 182 1938 Deutsche Telekom AG
719 180 291 LANLINK autonomous system
8708 152 19 Romania Data Systems S.A.
15878 143 12 Global Center Paris
5400 136 66 Concert European Core Network
3303 132 576 Swisscom Ltd
2856 125 774 BTnet UK Regional network
5549 124 64 Nextra Deutschland GmbH + Co.
517 118 269 KPNQwest Germany GmbH
1267 103 1989 Infostrada S.p.A.
3269 103 784 TELECOM ITALIA
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2294 8141 UUNET Technologies, Inc.
7018 1017 7120 AT&T
3908 895 629 Supernet, Inc.
1 877 8662 BBN Planet
2551 854 660 ICG NetAhead, Inc
7046 772 1041 UUNET Technologies, Inc.
1239 715 3257 Sprint
3967 604 487 Exodus Communication
209 511 2151 Qwest
2914 508 2312 Verio, Inc.
690 499 93 Merit Network
4293 477 115 Cable & Wireless USA
3561 422 2399 Cable & Wireless USA
2548 387 1000 Business Internet, Inc.
2149 386 280 Performance Systems, Inc.
3549 369 820 Global Crossing
18994 356 10 Global Crossing
577 348 617 Bell Advanced Communications
6347 338 360 SAVVIS Communications Corpora
4323 337 316 Time Warner Communications, I
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2294 8141 UUNET Technologies, Inc.
1221 1591 1315 Telstra Pty Ltd
7018 1017 7120 AT&T
3908 895 629 Supernet, Inc.
1 877 8662 BBN Planet
2551 854 660 ICG NetAhead, Inc
7046 772 1041 UUNET Technologies, Inc.
1239 715 3257 Sprint
702 707 1732 UUNET Technologies, Inc.
3967 604 487 Exodus Communication
209 511 2151 Qwest
2914 508 2312 Verio, Inc.
690 499 93 Merit Network
4293 477 115 Cable & Wireless USA
2764 433 378 connect.com.au pty ltd
3301 431 917 TeliaNet Sweden
3561 422 2399 Cable & Wireless USA
703 419 367 UUNET Technologies, Inc.
2548 387 1000 Business Internet, Inc.
2149 386 280 Performance Systems, Inc.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65534 PRIVATE 62.23.176.0/24 6675 Colt Telecommunicati
65534 PRIVATE 62.23.177.0/24 6675 Colt Telecommunicati
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
578 UNALLOCATED 64.230.242.16/28 577 Bell Advanced Commun
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
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
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 /11:12 /12:32
/13:84 /14:224 /15:379 /16:6933 /17:1220 /18:2298
/19:6857 /20:5650 /21:4644 /22:6890 /23:8742 /24:60929
/25:341 /26:371 /27:341 /28:325 /29:259 /30:227
/31:0 /32:79
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1447 2294 UUNET Technologies, Inc.
1221 1441 1591 Telstra Pty Ltd
2551 748 854 ICG NetAhead, Inc
3908 748 895 Supernet, Inc.
7046 597 772 UUNET Technologies, Inc.
7018 524 1017 AT&T
690 495 499 Merit Network
4293 460 477 Cable & Wireless USA
702 457 707 UUNET Technologies, Inc.
3967 424 604 Exodus Communication
1 411 877 BBN Planet
1239 396 715 Sprint
2764 386 433 connect.com.au pty ltd
15870 373 377 Global Center Frankfurt
209 362 511 Qwest
18994 354 356 Global Crossing
703 349 419 UUNET Technologies, Inc.
11371 309 322 Rhythms NetConnections
4323 288 337 Time Warner Communications, I
4151 285 327 USDA
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 9:1 12:403 13:10 15:1 17:6
20:1 24:698 26:1 32:32 38:8 43:3
44:2 53:2 55:1 57:15 61:69 62:137
63:1908 64:1346 65:611 66:424 80:36 128:44
129:115 130:19 131:44 132:12 133:1 134:138
135:9 136:22 137:93 138:199 139:46 140:139
141:160 142:64 143:40 144:144 145:11 146:143
147:129 148:214 149:89 150:37 151:212 152:404
153:31 154:23 155:77 156:84 157:122 158:72
159:65 160:45 161:58 162:67 163:158 164:107
165:92 166:185 167:142 168:119 169:36 170:282
171:2 192:5498 193:1932 194:2039 195:817 196:412
198:3717 199:3401 200:2432 201:1 202:2726 203:4595
204:3513 205:2367 206:3029 207:2762 208:3076 209:3217
210:528 211:124 212:799 213:465 214:9 215:14
216:3064 217:377 218:2
End of report
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