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[bgp-stats] Routing Table Report - Japan view
* BGP Statistics focusing on the Asia Pacific Region *
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Routing Table Report 04:00 +10GMT Thu 14 Mar, 2002
Analysis Summary
----------------
BGP routing table entries examined: 109814
Prefixes after maximum aggregation: 72265
Unique aggregates announced to Internet: 51061
Total ASes present in the Internet Routing Table: 12747
Origin-only ASes present in the Internet Routing Table: 11024
Origin ASes announcing only one prefix: 4836
Transit ASes present in the Internet Routing Table: 1723
Transit-only ASes present in the Internet Routing Table: 59
Average AS path length visible in the Internet Routing Table: 5.4
Max AS path length visible: 16
Illegal AS announcements present in the Routing Table: 1
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 19
Number of addresses announced to Internet: 1172221608
Equivalent to 69 /8s, 222 /16s and 174 /24s
Percentage of available address space announced: 31.6
Percentage of allocated address space announced: 59.8
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 73570
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17907
Total APNIC prefixes after maximum aggregation: 10676
Prefixes being announced from the APNIC address blocks: 16428
Unique aggregates announced from the APNIC address blocks: 9992
APNIC Region origin ASes present in the Internet Routing Table: 1465
APNIC Region origin ASes announcing only one prefix: 485
APNIC Region transit ASes present in the Internet Routing Table: 257
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 81598528
Equivalent to 4 /8s, 221 /16s and 24 /24s
Percentage of available APNIC address space announced: 60.3
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: 73571
Total ARIN prefixes after maximum aggregation: 47450
Prefixes being announced from the ARIN address blocks: 52033
Unique aggregates announced from the ARIN address blocks: 15277
ARIN Region origin ASes present in the Internet Routing Table: 7548
ARIN Region origin ASes announcing only one prefix: 2366
ARIN Region transit ASes present in the Internet Routing Table: 782
Average ARIN Region AS path length visible: 5.3
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 193928388
Equivalent to 11 /8s, 143 /16s and 28 /24s
Percentage of available ARIN address space announced: 72.2
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: 18336
Total RIPE prefixes after maximum aggregation: 14139
Prefixes being announced from the RIPE address blocks: 15078
Unique aggregates announced from the RIPE address blocks: 10069
RIPE Region origin ASes present in the Internet Routing Table: 3674
RIPE Region origin ASes announcing only one prefix: 1985
RIPE Region transit ASes present in the Internet Routing Table: 671
Average RIPE Region AS path length visible: 5.8
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 107476000
Equivalent to 6 /8s, 103 /16s and 244 /24s
Percentage of available RIPE address space announced: 71.2
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 1291 1229 953 Telstra Pty Ltd
4538 444 1162 16 China Education and Research
2907 406 1926 372 SINET Japan
703 404 333 314 UUNET Technologies, Inc.
2764 387 361 363 connect.com.au pty ltd
4755 301 111 87 Videsh Sanchar Nigam Ltd. Aut
7474 296 289 200 Optus Communications Pty Ltd
4134 274 1962 97 Data Communications Bureau
9443 273 44 63 Primus Telecommunications
17557 236 15 99 Pakistan Telecom
9394 221 113 4 CHINA RAILWAY Internet(CRNET)
4766 212 1520 148 Korea Internet Exchange for "
4804 165 84 68 Microplex PTY LTD
7539 165 237 158 TANet2, sponsored by NSC, TAI
9583 148 32 5 Satyam Infoway Ltd.,
9768 137 385 82 Korea Telecom
4713 127 906 104 NTT Communications Corporatio
7657 123 22 86 The Internet Group Limited
4780 118 186 40 Digital United Inc.
17676 117 1872 17 XTAGE CORPORATION
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1031 2627 846 UUNET Technologies, Inc.
3301 395 924 349 TeliaNet Sweden
3215 261 570 157 France Telecom / &Equant
1257 236 487 232 SWIPnet Swedish IP Network
680 231 2147 230 DFN-IP service G-WiN
5515 216 697 173 Sonera Finland Autonomous Sys
5400 198 83 93 Concert European Core Network
3320 196 1964 171 Deutsche Telekom AG
786 182 1874 182 The JANET IP Service
719 163 289 118 LANLINK autonomous system
8708 156 23 145 Romania Data Systems S.A.
2856 131 790 120 BTnet UK Regional network
3303 124 579 124 Swisscom Ltd
12302 123 8 44 MobiFon S.A.
8297 117 37 65 Teleglobe Autonomous System i
3269 116 693 70 TELECOM ITALIA
9051 101 6 25 INCONET Autonomous System
517 100 226 98 KPNQwest Germany GmbH
2874 97 100 37 Global One Services AB
5511 91 192 79 France Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2150 8438 1517 UUNET Technologies, Inc.
7018 1208 7484 909 AT&T
3908 847 1675 482 Supernet, Inc.
1 835 8123 609 BBN Planet
1239 797 3382 625 Sprint
4323 640 436 253 Time Warner Communications, I
852 635 1128 413 Telus Advanced Communications
7046 619 835 405 UUNET Technologies, Inc.
209 548 1993 316 Qwest
7132 518 545 158 Southwestern Bell Internet Se
3549 478 843 244 Global Crossing
690 436 67 282 Merit Network
2914 420 2176 417 Verio, Inc.
7843 385 313 50 Adelphia Corp.
705 372 115 263 UUNET Technologies, Inc.
2149 370 224 309 Performance Systems, Inc.
3741 345 731 235 The Internet Solution
2386 337 372 192 AT&T Data Communications Serv
6197 326 215 168 BellSouth Network Solutions,
3561 322 2184 289 Cable & Wireless USA
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4538 444 428 China Education and Research
4323 640 387 Time Warner Communications, I
3908 847 365 Supernet, Inc.
7132 518 360 Southwestern Bell Internet Se
1221 1291 338 Telstra Pty Ltd
7843 385 335 Adelphia Corp.
7018 1208 299 AT&T
4151 306 290 USDA
11371 287 281 Rhythms NetConnections
6198 309 276 BellSouth Network Solutions,
6347 318 237 SAVVIS Communications Corpora
3549 478 234 Global Crossing
209 548 232 Qwest
7029 244 229 Alltel Information Services,
1 835 226 BBN Planet
852 635 222 Telus Advanced Communications
9394 221 217 CHINA RAILWAY Internet(CRNET)
7046 619 214 UUNET Technologies, Inc.
4755 301 214 Videsh Sanchar Nigam Ltd. Aut
9443 273 210 Primus Telecommunications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
96.0.0.0/20 3549 Global Crossing
101.101.5.0/24 684 Manitoba Regional Network
102.102.102.0/24 684 Manitoba Regional Network
121.121.121.0/24 684 Manitoba Regional Network
122.122.122.0/24 684 Manitoba Regional Network
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.
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
189.186.184.0/24 4471 Michigan Internet Cooperative
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 /8:20 /9:5 /10:8 /11:14 /12:35
/13:88 /14:230 /15:405 /16:7188 /17:1385 /18:2546
/19:7410 /20:6894 /21:4938 /22:7521 /23:9172 /24:61061
/25:219 /26:239 /27:102 /28:87 /29:77 /30:128
/31:0 /32:42
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1390 2150 UUNET Technologies, Inc.
1221 1148 1291 Telstra Pty Ltd
702 654 1031 UUNET Technologies, Inc.
7018 632 1208 AT&T
3908 580 847 Supernet, Inc.
4323 510 640 Time Warner Communications, I
1239 455 797 Sprint
7046 436 619 UUNET Technologies, Inc.
1 433 835 BBN Planet
690 432 436 Merit Network
852 390 635 Telus Advanced Communications
209 361 548 Qwest
2764 343 387 connect.com.au pty ltd
3549 341 478 Global Crossing
703 326 404 UUNET Technologies, Inc.
705 320 372 UUNET Technologies, Inc.
11371 281 287 Rhythms NetConnections
2149 278 370 Performance Systems, Inc.
6197 275 326 BellSouth Network Solutions,
7066 272 301 Virginia Polytechnic Institut
Number of /24s announced per /8 block (Global)
----------------------------------------------
3:1 9:1 12:492 13:10 15:1 17:5
20:2 24:759 25:1 32:68 38:9 40:6
44:1 57:15 61:263 62:173 63:1885 64:1159
65:1074 66:806 67:52 68:4 80:208 81:5
101:1 102:1 121:1 122:1 128:63 129:123
130:23 131:56 132:11 133:3 134:126 135:10
136:277 137:103 138:148 139:48 140:185 141:65
142:83 143:37 144:142 145:11 146:218 147:156
148:131 149:91 150:41 151:50 152:342 153:33
154:5 155:87 156:76 157:117 158:73 159:119
160:24 161:55 162:141 163:106 164:98 165:123
166:224 167:189 168:95 169:49 170:289 171:2
189:1 192:5421 193:2218 194:2087 195:804 196:427
198:3701 199:3227 200:2358 201:1 202:3046 203:4556
204:3323 205:2156 206:2572 207:2631 208:2567 209:2812
210:554 211:201 212:862 213:586 214:9 215:18
216:2997 217:453 218:21
End of report
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