Weekly Routing Table Report
Routing Table Analysis
cscora at thyme.apnic.net
Thu Nov 22 13:03:43 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 23 Nov, 2001
Analysis Summary
----------------
BGP routing table entries examined: 107582
Total ASes present in the Internet Routing Table: 12122
Origin-only ASes present in the Internet Routing Table: 10534
Origin ASes announcing only one prefix: 4519
Transit ASes present in the Internet Routing Table: 1588
Transit-only ASes present in the Internet Routing Table: 49
Average AS path length visible in the Internet Routing Table: 5.3
Max AS path length visible: 19
Illegal AS announcements present in the Routing Table: 9
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: 1256253460
Equivalent to 74 /8s, 224 /16s and 232 /24s
Percentage of available address space announced: 33.9
Percentage of allocated address space announced: 64.7
Percentage of available address space allocated: 52.4
Total number of prefixes smaller than registry allocations: 72790
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16998
Prefixes being announced from the APNIC address blocks: 15495
APNIC Region origin ASes present in the Internet Routing Table: 1409
APNIC Region origin ASes announcing only one prefix: 460
APNIC Region transit ASes present in the Internet Routing Table: 238
Average APNIC Region AS path length visible: 5.2
Max APNIC Region AS path length visible: 19
Number of APNIC addresses announced to Internet: 89014362
Equivalent to 5 /8s, 78 /16s and 64 /24s
Percentage of available APNIC address space announced: 75.1
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: 72736
Prefixes being announced from the ARIN address blocks: 52030
ARIN Region origin ASes present in the Internet Routing Table: 7198
ARIN Region origin ASes announcing only one prefix: 2202
ARIN Region transit ASes present in the Internet Routing Table: 726
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 219486431
Equivalent to 13 /8s, 21 /16s and 24 /24s
Percentage of available ARIN address space announced: 81.8
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 - 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: 17842
Prefixes being announced from the RIPE address blocks: 14473
RIPE Region origin ASes present in the Internet Routing Table: 3467
RIPE Region origin ASes announcing only one prefix: 1857
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: 110308732
Equivalent to 6 /8s, 147 /16s and 45 /24s
Percentage of available RIPE address space announced: 73.1
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 1535 1305 Telstra Pty Ltd
2764 406 357 connect.com.au pty ltd
703 385 344 UUNET Technologies, Inc.
2907 371 1848 SINET Japan
4755 351 169 Videsh Sanchar Nigam Ltd. Aut
7474 301 275 Optus Communications Pty Ltd
4134 255 1924 Data Communications Bureau
4766 185 1431 Korea Internet Exchange for "
4740 179 41 OzEmail ISP
9443 172 54 Primus Telecommunications
1659 165 1157 Taiwan Academic Network (TANe
2521 165 172 PSINet Japan
17557 153 12 Pakistan Telecom
4812 143 308 China Telecom (Group) - Shang
7539 142 120 TANet2, sponsored by NSC, TAI
9583 141 47 Satyam Infoway Ltd.,
4786 137 16 NetConnect Communications Pty
9768 127 362 Korea Telecom
17676 125 1952 XTAGE CORPORATION
7657 122 23 The Internet Group Limited
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
702 1134 2641 UUNET Technologies, Inc.
3301 419 948 TeliaNet Sweden
1257 268 500 SWIPnet Swedish IP Network
3215 236 543 France Telecom / &Equant
680 231 2148 DFN-IP service G-WiN
5515 199 704 Sonera Finland Autonomous Sys
3320 194 1959 Deutsche Telekom AG
786 184 1890 The JANET IP Service
8708 170 17 Romania Data Systems S.A.
719 166 292 LANLINK autonomous system
5400 138 62 Concert European Core Network
2856 135 778 BTnet UK Regional network
3303 131 561 Swisscom Ltd
5549 122 82 Nextra Deutschland GmbH + Co.
517 112 248 KPNQwest Germany GmbH
12302 108 7 MobiFon S.A.
1273 107 165 Cable & Wireless ECRC GmbH
3269 107 809 TELECOM ITALIA
1290 100 398 PSINet UK Ltd.
8297 93 31 Teleglobe Autonomous System i
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv Description
701 2238 9179 UUNET Technologies, Inc.
7018 1088 7347 AT&T
3967 1040 482 Exodus Communication
1 832 8548 BBN Planet
7046 732 919 UUNET Technologies, Inc.
1239 722 3387 Sprint
8010 719 106 PublicNet Communications, Inc
4323 613 478 Time Warner Communications, I
209 597 2217 Qwest
3908 578 1378 Supernet, Inc.
852 540 697 Telus Advanced Communications
690 498 71 Merit Network
2914 480 2284 Verio, Inc.
2149 465 269 Performance Systems, Inc.
705 437 251 UUNET Technologies, Inc.
3549 397 889 Global Crossing
3561 388 2288 Cable & Wireless USA
7132 385 532 Southwestern Bell Internet Se
4151 368 1255 USDA
577 350 625 Bell Advanced Communications
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv Description
701 2238 9179 UUNET Technologies, Inc.
1221 1535 1305 Telstra Pty Ltd
702 1134 2641 UUNET Technologies, Inc.
7018 1088 7347 AT&T
3967 1040 482 Exodus Communication
1 832 8548 BBN Planet
7046 732 919 UUNET Technologies, Inc.
1239 722 3387 Sprint
8010 719 106 PublicNet Communications, Inc
4323 613 478 Time Warner Communications, I
209 597 2217 Qwest
3908 578 1378 Supernet, Inc.
852 540 697 Telus Advanced Communications
690 498 71 Merit Network
2914 480 2284 Verio, Inc.
2149 465 269 Performance Systems, Inc.
705 437 251 UUNET Technologies, Inc.
3301 419 948 TeliaNet Sweden
2764 406 357 connect.com.au pty ltd
3549 397 889 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,
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
100.0.0.0/24 10061 Financial Supervisory Service
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 /12:36
/13:87 /14:221 /15:388 /16:7053 /17:1344 /18:2419
/19:7078 /20:6031 /21:4706 /22:7102 /23:8867 /24:60670
/25:331 /26:319 /27:259 /28:233 /29:154 /30:182
/31:0 /32:60
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1429 2238 UUNET Technologies, Inc.
1221 1391 1535 Telstra Pty Ltd
3967 858 1040 Exodus Communication
702 775 1134 UUNET Technologies, Inc.
8010 703 719 PublicNet Communications, Inc
7046 565 732 UUNET Technologies, Inc.
7018 558 1088 AT&T
4323 524 613 Time Warner Communications, I
690 495 498 Merit Network
209 426 597 Qwest
3908 405 578 Supernet, Inc.
1239 401 722 Sprint
1 398 832 BBN Planet
2764 363 406 connect.com.au pty ltd
852 360 540 Telus Advanced Communications
2149 352 465 Performance Systems, Inc.
705 344 437 UUNET Technologies, Inc.
4151 323 368 USDA
703 314 385 UUNET Technologies, Inc.
4755 304 351 Videsh Sanchar Nigam Ltd. Aut
Number of /24s announced per /8 block (Global)
----------------------------------------------
9:1 12:421 13:10 15:1 17:5 20:1
24:833 25:1 26:1 32:72 38:13 40:1
43:1 44:2 47:2 52:1 53:2 57:12
61:121 62:155 63:1888 64:1467 65:923 66:730
67:7 80:96 100:1 128:61 129:111 130:23
131:40 132:12 133:2 134:131 135:10 136:103
137:98 138:61 139:30 140:89 141:58 142:67
143:43 144:57 145:12 146:209 147:90 148:187
149:88 150:42 151:191 152:386 153:86 154:8
155:84 156:90 157:107 158:69 159:71 160:46
161:50 162:82 163:129 164:122 165:99 166:204
167:160 168:118 169:45 170:291 171:2 192:5341
193:2041 194:2078 195:840 196:444 198:3747 199:3383
200:2394 201:1 202:2881 203:4590 204:3314 205:2125
206:2626 207:2665 208:2753 209:2985 210:583 211:145
212:941 213:534 214:9 215:15 216:2965 217:432
218:6
End of report
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