Weekly Routing Table Report
Routing Table Analysis
cscora at thyme.apnic.net
Fri Apr 5 05:05:08 EST 2002
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 20:00 +10GMT Fri 05 Apr, 2002
Analysis Summary
----------------
BGP routing table entries examined: 111183
Prefixes after maximum aggregation: 72523
Unique aggregates announced to Internet: 53862
Total ASes present in the Internet Routing Table: 12853
Origin-only ASes present in the Internet Routing Table: 11134
Origin ASes announcing only one prefix: 4883
Transit ASes present in the Internet Routing Table: 1719
Transit-only ASes present in the Internet Routing Table: 55
Average AS path length visible in the Internet Routing Table: 5.4
Max AS path length visible: 17
Illegal AS announcements present in the Routing Table: 32
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 14
Number of addresses announced to Internet: 1163534440
Equivalent to 69 /8s, 90 /16s and 32 /24s
Percentage of available address space announced: 31.4
Percentage of allocated address space announced: 59.4
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 74810
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 18347
Total APNIC prefixes after maximum aggregation: 10814
Prefixes being announced from the APNIC address blocks: 16820
Unique aggregates announced from the APNIC address blocks: 10202
APNIC Region origin ASes present in the Internet Routing Table: 1475
APNIC Region origin ASes announcing only one prefix: 481
APNIC Region transit ASes present in the Internet Routing Table: 262
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 82542400
Equivalent to 4 /8s, 235 /16s and 127 /24s
Percentage of available APNIC address space announced: 61.0
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239
17408 - 18431, 23552 - 24575
APNIC Address Blocks 61/8, 202/7, 210/7, 218/7 and 220/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 74236
Total ARIN prefixes after maximum aggregation: 47491
Prefixes being announced from the ARIN address blocks: 52525
Unique aggregates announced from the ARIN address blocks: 17615
ARIN Region origin ASes present in the Internet Routing Table: 7609
ARIN Region origin ASes announcing only one prefix: 2399
ARIN Region transit ASes present in the Internet Routing Table: 764
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 183919940
Equivalent to 10 /8s, 246 /16s and 101 /24s
Percentage of available ARIN address space announced: 68.5
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: 18595
Total RIPE prefixes after maximum aggregation: 14218
Prefixes being announced from the RIPE address blocks: 15313
Unique aggregates announced from the RIPE address blocks: 10167
RIPE Region origin ASes present in the Internet Routing Table: 3713
RIPE Region origin ASes announcing only one prefix: 2003
RIPE Region transit ASes present in the Internet Routing Table: 679
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 17
Number of RIPE addresses announced to Internet: 108544800
Equivalent to 6 /8s, 120 /16s and 67 /24s
Percentage of available RIPE address space announced: 71.9
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, 24576 - 25599
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 MaxAgg Description
1221 1289 1211 946 Telstra Pty Ltd
4538 470 1194 17 China Education and Research
2907 437 1927 371 SINET Japan
703 420 338 326 UUNET Technologies, Inc.
2764 387 361 361 connect.com.au pty ltd
9394 338 113 4 CHINA RAILWAY Internet(CRNET)
7474 312 290 211 Optus Communications Pty Ltd
4755 280 109 78 Videsh Sanchar Nigam Ltd. Aut
9443 276 44 64 Primus Telecommunications
4134 273 1986 93 Data Communications Bureau
17557 255 17 100 Pakistan Telecom
4766 220 1520 158 Korea Internet Exchange for "
7539 170 256 163 TANet2, sponsored by NSC, TAI
4804 160 84 67 Microplex PTY LTD
9583 149 32 5 Satyam Infoway Ltd.,
9768 139 385 79 Korea Telecom
7657 122 22 85 The Internet Group Limited
4713 119 898 104 NTT Communications Corporatio
17676 119 1904 12 XTAGE CORPORATION
4780 114 186 39 Digital United Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1028 2577 843 UUNET Technologies, Inc.
3301 388 923 343 TeliaNet Sweden
3215 269 582 174 France Telecom / &Equant
5515 266 760 171 Sonera Finland Autonomous Sys
680 232 2149 231 DFN-IP service G-WiN
3320 227 1964 175 Deutsche Telekom AG
1257 215 463 212 SWIPnet Swedish IP Network
5400 196 83 93 Concert European Core Network
786 182 1874 182 The JANET IP Service
719 163 289 118 LANLINK autonomous system
8708 158 23 148 Romania Data Systems S.A.
2856 128 786 117 BTnet UK Regional network
12302 127 8 47 MobiFon S.A.
3303 123 564 122 Swisscom Ltd
8297 121 53 66 Teleglobe Autonomous System i
3269 117 694 71 TELECOM ITALIA
5536 107 11 27 Internet Egypt Network
5511 103 193 91 France Telecom
517 101 226 97 KPNQwest Germany GmbH
9051 101 6 25 INCONET Autonomous System
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2077 8538 1456 UUNET Technologies, Inc.
7018 1230 7512 920 AT&T
3908 849 1676 479 Supernet, Inc.
1239 822 3390 645 Sprint
1 804 8138 605 BBN Planet
4323 628 436 253 Time Warner Communications, I
852 625 1111 412 Telus Advanced Communications
7046 601 837 370 UUNET Technologies, Inc.
209 562 1997 321 Qwest
705 541 152 279 UUNET Technologies, Inc.
7132 525 555 162 Southwestern Bell Internet Se
3549 519 861 269 Global Crossing
690 455 68 300 Merit Network
7843 430 314 50 Adelphia Corp.
2914 413 2162 409 Verio, Inc.
7066 362 203 250 Virginia Polytechnic Institut
2149 355 207 296 Performance Systems, Inc.
3741 342 731 235 The Internet Solution
6197 332 217 173 BellSouth Network Solutions,
3561 317 2152 285 Cable & Wireless USA
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4538 470 453 China Education and Research
7843 430 380 Adelphia Corp.
4323 628 375 Time Warner Communications, I
3908 849 370 Supernet, Inc.
7132 525 363 Southwestern Bell Internet Se
1221 1289 343 Telstra Pty Ltd
9394 338 334 CHINA RAILWAY Internet(CRNET)
7018 1230 310 AT&T
4151 307 291 USDA
11371 294 288 Rhythms NetConnections
6198 311 280 BellSouth Network Solutions,
4565 311 277 Epoch Networks
705 541 262 UUNET Technologies, Inc.
3549 519 250 Global Crossing
209 562 241 Qwest
6347 317 238 SAVVIS Communications Corpora
7046 601 231 UUNET Technologies, Inc.
7029 243 228 Alltel Information Services,
4355 250 214 EarthLink, Inc.
852 625 213 Telus Advanced Communications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
23522 UNALLOCATED 63.144.122.0/24 209 Qwest
23522 UNALLOCATED 63.145.151.0/24 209 Qwest
23522 UNALLOCATED 63.147.197.0/24 209 Qwest
23522 UNALLOCATED 63.149.31.0/24 209 Qwest
23522 UNALLOCATED 63.149.35.0/24 209 Qwest
23522 UNALLOCATED 63.151.165.0/24 209 Qwest
23522 UNALLOCATED 63.151.166.0/24 209 Qwest
23522 UNALLOCATED 63.151.206.0/24 209 Qwest
23279 UNALLOCATED 63.238.4.0/24 209 Qwest
23522 UNALLOCATED 63.239.198.0/24 209 Qwest
23522 UNALLOCATED 65.116.88.0/24 209 Qwest
23522 UNALLOCATED 65.116.89.0/24 209 Qwest
23522 UNALLOCATED 65.116.90.0/24 209 Qwest
23522 UNALLOCATED 65.116.91.0/24 209 Qwest
23522 UNALLOCATED 65.116.92.0/24 209 Qwest
23522 UNALLOCATED 65.116.93.0/24 209 Qwest
23522 UNALLOCATED 65.116.94.0/24 209 Qwest
23522 UNALLOCATED 65.116.95.0/24 209 Qwest
23522 UNALLOCATED 65.117.175.0/24 209 Qwest
23522 UNALLOCATED 66.252.0.0/20 209 Qwest
23522 UNALLOCATED 66.252.15.0/24 209 Qwest
65005 PRIVATE 152.70.0.0/16 90 Sun Microsystems, In
112 UNALLOCATED 192.175.48.0/24 3557 Vixie Enterprises
65535 PRIVATE 198.93.230.0/24 3550 Ateneo de Manila Uni
65535 PRIVATE 198.93.231.0/24 3550 Ateneo de Manila Uni
65535 PRIVATE 198.94.168.0/24 3550 Ateneo de Manila Uni
65535 PRIVATE 198.94.169.0/24 3550 Ateneo de Manila Uni
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
23522 UNALLOCATED 216.111.191.0/24 209 Qwest
23522 UNALLOCATED 216.111.239.0/24 209 Qwest
23279 UNALLOCATED 216.207.52.0/24 209 Qwest
23279 UNALLOCATED 216.207.53.0/24 209 Qwest
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
96.0.0.0/20 3549 Global Crossing
132.0.0.0/10 568 DISO-UNRRA
134.137.0.0/16 7170 AT&T Government Markets
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.
153.36.0.0/14 701 UUNET Technologies, Inc.
153.147.0.0/16 3561 Cable & Wireless USA
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
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 /10:8 /11:14 /12:35
/13:88 /14:233 /15:401 /16:7207 /17:1404 /18:2564
/19:7425 /20:6889 /21:4964 /22:7624 /23:9188 /24:62083
/25:227 /26:288 /27:119 /28:116 /29:122 /30:125
/31:0 /32:36
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1333 2077 UUNET Technologies, Inc.
1221 1148 1289 Telstra Pty Ltd
702 656 1028 UUNET Technologies, Inc.
7018 645 1230 AT&T
3908 580 849 Supernet, Inc.
4323 496 628 Time Warner Communications, I
705 474 541 UUNET Technologies, Inc.
1239 474 822 Sprint
690 447 455 Merit Network
7046 414 601 UUNET Technologies, Inc.
1 397 804 BBN Planet
852 381 625 Telus Advanced Communications
3549 377 519 Global Crossing
209 370 562 Qwest
2764 342 387 connect.com.au pty ltd
703 337 420 UUNET Technologies, Inc.
7066 333 362 Virginia Polytechnic Institut
9394 324 338 CHINA RAILWAY Internet(CRNET)
11371 288 294 Rhythms NetConnections
4565 286 311 Epoch Networks
Number of /24s announced per /8 block (Global)
----------------------------------------------
3:1 9:1 12:492 13:10 15:2 17:6
20:2 24:774 25:1 32:68 38:8 40:6
44:1 57:14 61:305 62:180 63:1910 64:1195
65:1135 66:805 67:205 68:5 80:228 81:10
128:64 129:131 130:22 131:57 132:12 133:3
134:129 135:10 136:288 137:103 138:137 139:49
140:187 141:114 142:82 143:38 144:137 145:13
146:220 147:137 148:160 149:92 150:40 151:45
152:308 153:33 154:1 155:105 156:76 157:122
158:72 159:124 160:42 161:56 162:141 163:104
164:158 165:126 166:219 167:187 168:100 169:52
170:289 171:2 192:5456 193:2266 194:2095 195:807
196:430 198:3737 199:3222 200:2387 202:3153 203:4574
204:3241 205:2179 206:2620 207:2671 208:2568 209:2821
210:583 211:204 212:883 213:617 214:9 215:18
216:3114 217:462 218:15
End of report
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