Weekly Routing Table Report
Routing Table Analysis
cscora at thyme.apnic.net
Thu Nov 29 13:04:17 EST 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 04:00 30 Nov, 2001
Analysis Summary
----------------
BGP routing table entries examined: 107754
Total ASes present in the Internet Routing Table: 12188
Origin-only ASes present in the Internet Routing Table: 10581
Origin ASes announcing only one prefix: 4559
Transit ASes present in the Internet Routing Table: 1607
Transit-only ASes present in the Internet Routing Table: 57
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: 10
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: 1261439733
Equivalent to 75 /8s, 48 /16s and 10 /24s
Percentage of available address space announced: 34.0
Percentage of allocated address space announced: 65.0
Percentage of available address space allocated: 52.4
Total number of prefixes smaller than registry allocations: 72710
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17003
Prefixes being announced from the APNIC address blocks: 15490
APNIC Region origin ASes present in the Internet Routing Table: 1413
APNIC Region origin ASes announcing only one prefix: 462
APNIC Region transit ASes present in the Internet Routing Table: 245
Average APNIC Region AS path length visible: 5.1
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 89518998
Equivalent to 5 /8s, 85 /16s and 243 /24s
Percentage of available APNIC address space announced: 75.6
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: 72912
Prefixes being announced from the ARIN address blocks: 52282
ARIN Region origin ASes present in the Internet Routing Table: 7240
ARIN Region origin ASes announcing only one prefix: 2227
ARIN Region transit ASes present in the Internet Routing Table: 742
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 221982938
Equivalent to 13 /8s, 59 /16s and 48 /24s
Percentage of available ARIN address space announced: 82.7
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: 17832
Prefixes being announced from the RIPE address blocks: 14513
RIPE Region origin ASes present in the Internet Routing Table: 3480
RIPE Region origin ASes announcing only one prefix: 1870
RIPE Region transit ASes present in the Internet Routing Table: 610
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 111005108
Equivalent to 6 /8s, 157 /16s and 205 /24s
Percentage of available RIPE address space announced: 73.5
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 1532 1328 Telstra Pty Ltd
2764 408 358 connect.com.au pty ltd
703 380 335 UUNET Technologies, Inc.
2907 372 1863 SINET Japan
4755 305 159 Videsh Sanchar Nigam Ltd. Aut
7474 304 287 Optus Communications Pty Ltd
4134 257 1948 Data Communications Bureau
4766 185 1431 Korea Internet Exchange for "
4740 177 40 OzEmail ISP
9443 174 62 Primus Telecommunications
2521 167 172 PSINet Japan
1659 164 1124 Taiwan Academic Network (TANe
17557 163 13 Pakistan Telecom
9583 155 47 Satyam Infoway Ltd.,
4812 137 305 China Telecom (Group) - Shang
7539 137 150 TANet2, sponsored by NSC, TAI
4786 131 15 NetConnect Communications Pty
9768 127 362 Korea Telecom
17676 125 1952 XTAGE CORPORATION
7657 123 23 The Internet Group Limited
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 1159 2778 UUNET Technologies, Inc.
3301 430 934 TeliaNet Sweden
1257 268 500 SWIPnet Swedish IP Network
3215 237 543 France Telecom / &Equant
680 231 2148 DFN-IP service G-WiN
5515 201 704 Sonera Finland Autonomous Sys
3320 190 1959 Deutsche Telekom AG
786 183 1874 The JANET IP Service
719 166 292 LANLINK autonomous system
8708 162 21 Romania Data Systems S.A.
5400 142 62 Concert European Core Network
2856 134 777 BTnet UK Regional network
3303 132 561 Swisscom Ltd
5549 121 82 Nextra Deutschland GmbH + Co.
517 111 248 KPNQwest Germany GmbH
12302 107 7 MobiFon S.A.
3269 105 799 TELECOM ITALIA
1290 100 398 PSINet UK Ltd.
8297 98 31 Teleglobe Autonomous System i
5511 94 192 France Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2209 9159 UUNET Technologies, Inc.
7018 1090 7346 AT&T
3967 1028 483 Exodus Communication
1 841 8516 BBN Planet
1239 729 3388 Sprint
7046 729 889 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 696 1549 Supernet, Inc.
209 606 2217 Qwest
4323 585 477 Time Warner Communications, I
852 543 697 Telus Advanced Communications
690 502 71 Merit Network
2914 480 2268 Verio, Inc.
705 461 253 UUNET Technologies, Inc.
2149 437 251 Performance Systems, Inc.
3549 406 889 Global Crossing
3561 387 2288 Cable & Wireless USA
7132 386 534 Southwestern Bell Internet Se
4151 368 1287 USDA
3741 350 766 The Internet Solution
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2209 9159 UUNET Technologies, Inc.
1221 1532 1328 Telstra Pty Ltd
702 1159 2778 UUNET Technologies, Inc.
7018 1090 7346 AT&T
3967 1028 483 Exodus Communication
1 841 8516 BBN Planet
1239 729 3388 Sprint
7046 729 889 UUNET Technologies, Inc.
8010 719 106 PublicNet Communications, Inc
3908 696 1549 Supernet, Inc.
209 606 2217 Qwest
4323 585 477 Time Warner Communications, I
852 543 697 Telus Advanced Communications
690 502 71 Merit Network
2914 480 2268 Verio, Inc.
705 461 253 UUNET Technologies, Inc.
2149 437 251 Performance Systems, Inc.
3301 430 934 TeliaNet Sweden
2764 408 358 connect.com.au pty ltd
3549 406 889 Global Crossing
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
2027 UNALLOCATED 150.185.128.0/18 8143 Publicom Corp.
65025 PRIVATE 168.95.70.0/24 3462 Data Communication B
65025 PRIVATE 168.95.71.0/24 3462 Data Communication B
65025 PRIVATE 168.95.86.32/27 3462 Data Communication B
65026 PRIVATE 168.95.86.128/27 3462 Data Communication B
65026 PRIVATE 168.95.160.0/24 3462 Data Communication B
65026 PRIVATE 168.95.161.0/24 3462 Data Communication B
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
65515 PRIVATE 212.110.142.0/24 5593 CRIS-AS
17940 UNALLOCATED 218.45.0.0/20 4713 NTT Communications C
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
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
191.9.200.0/24 1290 PSINet UK 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 /10:7 /11:12 /12:36
/13:90 /14:221 /15:385 /16:7091 /17:1356 /18:2451
/19:7110 /20:6124 /21:4696 /22:7090 /23:8861 /24:60637
/25:328 /26:319 /27:268 /28:236 /29:151 /30:189
/31:0 /32:73
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1406 2209 UUNET Technologies, Inc.
1221 1386 1532 Telstra Pty Ltd
3967 845 1028 Exodus Communication
702 761 1159 UUNET Technologies, Inc.
8010 703 719 PublicNet Communications, Inc
7018 564 1090 AT&T
7046 562 729 UUNET Technologies, Inc.
690 499 502 Merit Network
4323 495 585 Time Warner Communications, I
3908 472 696 Supernet, Inc.
209 435 606 Qwest
1 413 841 BBN Planet
1239 406 729 Sprint
705 368 461 UUNET Technologies, Inc.
2764 366 408 connect.com.au pty ltd
852 363 543 Telus Advanced Communications
2149 329 437 Performance Systems, Inc.
4151 322 368 USDA
703 310 380 UUNET Technologies, Inc.
3549 274 406 Global Crossing
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 9:1 12:422 13:10 15:1 17:5
20:1 24:859 25:1 26:1 32:72 38:13
40:1 43:1 44:2 52:1 53:2 57:12
61:124 62:162 63:1916 64:1496 65:964 66:741
67:8 80:108 128:61 129:111 130:23 131:44
132:14 133:2 134:137 135:10 136:114 137:102
138:63 139:30 140:98 141:59 142:65 143:43
144:54 145:13 146:211 147:90 148:128 149:88
150:42 151:38 152:390 153:51 154:6 155:85
156:89 157:114 158:69 159:71 160:45 161:51
162:82 163:130 164:121 165:99 166:205 167:162
168:121 169:46 170:301 171:2 191:1 192:5370
193:2097 194:2091 195:821 196:446 198:3748 199:3377
200:2409 201:1 202:2843 203:4582 204:3313 205:2132
206:2615 207:2658 208:2738 209:2999 210:591 211:146
212:912 213:537 214:9 215:15 216:2948 217:423
218:7
End of report
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