Weekly Routing Table Report
Routing Analysis
cscora at dev.apnic.net
Thu Aug 30 14:17:50 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 31 Aug, 2001
Analysis Summary
----------------
BGP routing table entries examined: 106542
Origin ASes present in the Internet Routing Table: 11578
Origin ASes announcing only one prefix: 4257
Transit ASes present in the Internet Routing Table: 1505
Average AS path length visible in the Internet Routing Table: 5.3
Max AS path length visible: 23
Illegal AS announcements present in the Routing Table: 44
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: 1214981193
Equivalent to 72 /8s, 107 /16s and 36 /24s
Percentage of available address space announced: 32.8
Percentage of allocated address space announced: 63.1
Percentage of available address space allocated: 51.9
Total number of prefixes smaller than registry allocations: 72523
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16099
Prefixes being announced from the APNIC address blocks: 14490
APNIC Region origin ASes present in the Internet Routing Table: 1359
APNIC Region origin ASes announcing only one prefix: 453
APNIC Region transit ASes present in the Internet Routing Table: 224
Average APNIC Region AS path length visible: 5.1
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 77770730
Equivalent to 4 /8s, 162 /16s and 175 /24s
Percentage of available APNIC address space announced: 76.5
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: 73197
Prefixes being announced from the ARIN address blocks: 52681
ARIN Region origin ASes present in the Internet Routing Table: 6965
ARIN Region origin ASes announcing only one prefix: 2075
ARIN Region transit ASes present in the Internet Routing Table: 700
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 23
Number of ARIN addresses announced to Internet: 207690849
Equivalent to 12 /8s, 97 /16s and 28 /24s
Percentage of available ARIN address space announced: 77.4
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: 17238
Prefixes being announced from the RIPE address blocks: 13646
RIPE Region origin ASes present in the Internet Routing Table: 3260
RIPE Region origin ASes announcing only one prefix: 1729
RIPE Region transit ASes present in the Internet Routing Table: 583
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 106320124
Equivalent to 6 /8s, 86 /16s and 80 /24s
Percentage of available RIPE address space announced: 70.4
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 1594 1315 Telstra Pty Ltd
2764 430 378 connect.com.au pty ltd
703 427 368 UUNET Technologies, Inc.
2907 367 1816 SINET Japan
4755 297 163 Videsh Sanchar Nigam Ltd. Aut
4134 243 1761 Data Communications Bureau
7474 236 289 Optus Communications Pty Ltd
7539 210 191 TANet2, sponsored by NSC, TAI
4740 190 22 OzEmail ISP
4766 179 1320 Korea Internet Exchange for "
7545 146 25 TPG Internet Pty Ltd
9443 143 39 Primus Telecommunications
4786 131 17 NetConnect Communications Pty
9583 123 62 Satyam Infoway Ltd.,
4763 120 69 Telstra New Zealand
4713 116 870 NTT Communications Corporatio
17561 116 167 Internet service provision to
7586 109 17 Paradox Digital Pty Ltd
4812 108 277 China Telecom (Group)
17557 106 7 Pakistan Telecom
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 725 1782 UUNET Technologies, Inc.
3301 431 917 TeliaNet Sweden
1257 278 522 SWIPnet Swedish IP Network
680 232 2261 DFN-IP service G-WiN
3215 221 512 France Telecom / &Equant
1270 203 826 UUNET Germany
5515 194 688 Sonera Finland Autonomous Sys
786 184 1890 The JANET IP Service
3320 183 1940 Deutsche Telekom AG
15870 182 11 Global Center Frankfurt
719 180 291 LANLINK autonomous system
8708 151 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 66 Nextra Deutschland GmbH + Co.
517 116 269 KPNQwest Germany GmbH
1267 103 1989 Infostrada S.p.A.
3269 100 780 TELECOM ITALIA
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2260 8188 UUNET Technologies, Inc.
7018 1030 7164 AT&T
3908 905 649 Supernet, Inc.
1 877 8660 BBN Planet
7046 790 1024 UUNET Technologies, Inc.
1239 722 3284 Sprint
3967 602 487 Exodus Communication
690 516 80 Merit Network
209 508 2135 Qwest
2914 500 2292 Verio, Inc.
4293 473 114 Cable & Wireless USA
3561 423 2373 Cable & Wireless USA
2548 384 997 Business Internet, Inc.
2149 375 311 Performance Systems, Inc.
3549 367 835 Global Crossing
577 365 634 Bell Advanced Communications
4323 349 341 Time Warner Communications, I
15290 346 338 AT&T Canada IES
6347 337 360 SAVVIS Communications Corpora
4151 332 1234 USDA
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2260 8188 UUNET Technologies, Inc.
1221 1594 1315 Telstra Pty Ltd
7018 1030 7164 AT&T
3908 905 649 Supernet, Inc.
1 877 8660 BBN Planet
7046 790 1024 UUNET Technologies, Inc.
702 725 1782 UUNET Technologies, Inc.
1239 722 3284 Sprint
3967 602 487 Exodus Communication
690 516 80 Merit Network
209 508 2135 Qwest
2914 500 2292 Verio, Inc.
4293 473 114 Cable & Wireless USA
3301 431 917 TeliaNet Sweden
2764 430 378 connect.com.au pty ltd
703 427 368 UUNET Technologies, Inc.
3561 423 2373 Cable & Wireless USA
2548 384 997 Business Internet, Inc.
2149 375 311 Performance Systems, Inc.
2907 367 1816 SINET Japan
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
65000 PRIVATE 138.163.4.0/24 665 Department of Navy
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
65002 PRIVATE 193.77.3.0/24 5603 SiOL Internet d.o.o.
6971 UNALLOCATED 199.249.223.0/24 2516 Kokusai Denshin Denw
64550 PRIVATE 203.161.39.0/24 17802 Internet AccessFor Q
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,
22259 UNALLOCATED 208.254.175.0/24 701 UUNET Technologies,
65000 PRIVATE 212.30.88.0/24 5603 SiOL Internet d.o.o.
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
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 /8:17 /9:5 /10:6 /11:12 /12:32
/13:84 /14:226 /15:380 /16:6957 /17:1224 /18:2324
/19:6913 /20:5701 /21:4676 /22:6904 /23:8783 /24:60638
/25:337 /26:339 /27:270 /28:269 /29:160 /30:201
/31:1 /32:83
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
1221 1445 1594 Telstra Pty Ltd
701 1425 2260 UUNET Technologies, Inc.
3908 752 905 Supernet, Inc.
7046 612 790 UUNET Technologies, Inc.
7018 527 1030 AT&T
690 513 516 Merit Network
702 470 725 UUNET Technologies, Inc.
4293 456 473 Cable & Wireless USA
3967 422 602 Exodus Communication
1 413 877 BBN Planet
1239 399 722 Sprint
2764 383 430 connect.com.au pty ltd
209 361 508 Qwest
703 357 427 UUNET Technologies, Inc.
11371 309 322 Rhythms NetConnections
4323 294 349 Time Warner Communications, I
4151 290 332 USDA
2548 276 384 Business Internet, Inc.
6995 275 289 Bell Atlantic Internet Soluti
705 273 315 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 9:1 12:408 13:10 15:1 17:6
20:1 24:766 26:1 32:70 38:8 43:4
44:2 53:2 55:1 57:15 61:68 62:137
63:1916 64:1341 65:640 66:451 80:36 128:44
129:114 130:17 131:42 132:12 133:1 134:151
135:8 136:22 137:142 138:200 139:46 140:195
141:161 142:63 143:39 144:140 145:11 146:145
147:130 148:180 149:89 150:37 151:209 152:390
153:32 154:23 155:79 156:84 157:121 158:72
159:64 160:46 161:59 162:67 163:158 164:108
165:95 166:187 167:142 168:119 169:36 170:286
171:2 192:5443 193:1944 194:2041 195:820 196:416
198:3670 199:3321 200:2491 201:1 202:2741 203:4607
204:3349 205:2263 206:2914 207:2639 208:3066 209:3229
210:529 211:126 212:824 213:468 214:8 215:13
216:3071 217:387 218:2
End of report
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