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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 Tue 19 Mar, 2002
Analysis Summary
----------------
BGP routing table entries examined: 109939
Prefixes after maximum aggregation: 72354
Unique aggregates announced to Internet: 52557
Total ASes present in the Internet Routing Table: 12769
Origin-only ASes present in the Internet Routing Table: 11057
Origin ASes announcing only one prefix: 4845
Transit ASes present in the Internet Routing Table: 1712
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: 19
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: 14
Number of addresses announced to Internet: 1167825320
Equivalent to 69 /8s, 155 /16s and 153 /24s
Percentage of available address space announced: 31.5
Percentage of allocated address space announced: 59.6
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 73615
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17994
Total APNIC prefixes after maximum aggregation: 10698
Prefixes being announced from the APNIC address blocks: 16511
Unique aggregates announced from the APNIC address blocks: 9993
APNIC Region origin ASes present in the Internet Routing Table: 1468
APNIC Region origin ASes announcing only one prefix: 483
APNIC Region transit ASes present in the Internet Routing Table: 255
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 81968192
Equivalent to 4 /8s, 226 /16s and 188 /24s
Percentage of available APNIC address space announced: 60.6
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: 73502
Total ARIN prefixes after maximum aggregation: 47499
Prefixes being announced from the ARIN address blocks: 51956
Unique aggregates announced from the ARIN address blocks: 17354
ARIN Region origin ASes present in the Internet Routing Table: 7558
ARIN Region origin ASes announcing only one prefix: 2364
ARIN Region transit ASes present in the Internet Routing Table: 766
Average ARIN Region AS path length visible: 5.3
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 183162564
Equivalent to 10 /8s, 234 /16s and 214 /24s
Percentage of available ARIN address space announced: 68.2
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: 18443
Total RIPE prefixes after maximum aggregation: 14157
Prefixes being announced from the RIPE address blocks: 15173
Unique aggregates announced from the RIPE address blocks: 9462
RIPE Region origin ASes present in the Internet Routing Table: 3687
RIPE Region origin ASes announcing only one prefix: 1998
RIPE Region transit ASes present in the Internet Routing Table: 677
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 19
Number of RIPE addresses announced to Internet: 113769760
Equivalent to 6 /8s, 199 /16s and 253 /24s
Percentage of available RIPE address space announced: 75.3
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 1290 1229 952 Telstra Pty Ltd
4538 464 1194 15 China Education and Research
703 406 334 315 UUNET Technologies, Inc.
2907 405 1910 371 SINET Japan
2764 385 361 361 connect.com.au pty ltd
7474 298 289 202 Optus Communications Pty Ltd
4755 295 111 82 Videsh Sanchar Nigam Ltd. Aut
4134 274 1962 97 Data Communications Bureau
9443 274 44 63 Primus Telecommunications
9394 254 113 4 CHINA RAILWAY Internet(CRNET)
17557 242 16 98 Pakistan Telecom
4766 208 1516 146 Korea Internet Exchange for "
4804 165 84 68 Microplex PTY LTD
7539 165 239 158 TANet2, sponsored by NSC, TAI
9583 149 32 5 Satyam Infoway Ltd.,
9768 137 385 82 Korea Telecom
4713 128 922 105 NTT Communications Corporatio
7657 122 22 85 The Internet Group Limited
4780 118 186 40 Digital United Inc.
17676 118 1888 16 XTAGE CORPORATION
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1032 2611 843 UUNET Technologies, Inc.
3301 394 924 349 TeliaNet Sweden
5515 272 697 171 Sonera Finland Autonomous Sys
3215 261 570 157 France Telecom / &Equant
1257 235 486 231 SWIPnet Swedish IP Network
680 231 2147 230 DFN-IP service G-WiN
3320 197 1964 172 Deutsche Telekom AG
5400 197 83 92 Concert European Core Network
786 182 1874 182 The JANET IP Service
719 163 289 118 LANLINK autonomous system
8708 157 23 145 Romania Data Systems S.A.
2856 129 788 118 BTnet UK Regional network
3303 124 579 124 Swisscom Ltd
12302 122 8 43 MobiFon S.A.
8297 119 4133 65 Teleglobe Autonomous System i
3269 117 694 71 TELECOM ITALIA
517 103 227 101 KPNQwest Germany GmbH
9051 101 6 25 INCONET Autonomous System
5511 100 193 87 France Telecom
2874 97 100 37 Global One Services AB
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2119 8337 1497 UUNET Technologies, Inc.
7018 1218 7526 909 AT&T
3908 844 1675 481 Supernet, Inc.
1 841 8124 611 BBN Planet
1239 799 3368 627 Sprint
4323 642 436 254 Time Warner Communications, I
852 629 1128 416 Telus Advanced Communications
7046 623 835 408 UUNET Technologies, Inc.
209 555 1993 319 Qwest
7132 518 545 158 Southwestern Bell Internet Se
3549 490 843 247 Global Crossing
690 432 66 278 Merit Network
2914 421 2177 418 Verio, Inc.
7843 386 313 50 Adelphia Corp.
705 383 116 275 UUNET Technologies, Inc.
2149 379 225 316 Performance Systems, Inc.
3741 344 731 234 The Internet Solution
2386 330 372 188 AT&T Data Communications Serv
6197 326 215 168 BellSouth Network Solutions,
577 321 602 214 Bell Advanced Communications
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4538 464 449 China Education and Research
4323 642 388 Time Warner Communications, I
3908 844 363 Supernet, Inc.
7132 518 360 Southwestern Bell Internet Se
1221 1290 338 Telstra Pty Ltd
7843 386 336 Adelphia Corp.
7018 1218 309 AT&T
4151 306 290 USDA
6198 309 276 BellSouth Network Solutions,
11371 277 271 Rhythms NetConnections
9394 254 250 CHINA RAILWAY Internet(CRNET)
3549 490 243 Global Crossing
6347 318 237 SAVVIS Communications Corpora
209 555 236 Qwest
1 841 230 BBN Planet
7029 245 230 Alltel Information Services,
7046 623 215 UUNET Technologies, Inc.
852 629 213 Telus Advanced Communications
4755 295 213 Videsh Sanchar Nigam Ltd. Aut
9443 274 211 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
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
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 /8:19 /9:5 /10:8 /11:14 /12:35
/13:89 /14:230 /15:405 /16:7188 /17:1390 /18:2559
/19:7416 /20:6935 /21:4910 /22:7512 /23:9167 /24:61143
/25:219 /26:239 /27:102 /28:89 /29:90 /30:129
/31:0 /32:46
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1381 2119 UUNET Technologies, Inc.
1221 1147 1290 Telstra Pty Ltd
702 656 1032 UUNET Technologies, Inc.
7018 638 1218 AT&T
3908 577 844 Supernet, Inc.
4323 512 642 Time Warner Communications, I
1239 457 799 Sprint
7046 439 623 UUNET Technologies, Inc.
1 432 841 BBN Planet
690 428 432 Merit Network
852 383 629 Telus Advanced Communications
209 369 555 Qwest
3549 353 490 Global Crossing
2764 341 385 connect.com.au pty ltd
705 330 383 UUNET Technologies, Inc.
703 327 406 UUNET Technologies, Inc.
2149 287 379 Performance Systems, Inc.
6197 275 326 BellSouth Network Solutions,
7066 272 301 Virginia Polytechnic Institut
11371 271 277 Rhythms NetConnections
Number of /24s announced per /8 block (Global)
----------------------------------------------
3:1 9:1 12:482 13:10 15:1 17:5
20:2 24:761 25:1 32:68 38:9 40:6
44:1 57:14 61:273 62:172 63:1879 64:1157
65:1078 66:824 67:53 80:209 81:8 128:64
129:122 130:23 131:56 132:11 133:3 134:126
135:10 136:282 137:102 138:147 139:48 140:189
141:62 142:84 143:37 144:142 145:12 146:219
147:157 148:134 149:92 150:41 151:50 152:339
153:33 154:8 155:90 156:76 157:113 158:73
159:125 160:24 161:55 162:140 163:107 164:100
165:123 166:224 167:191 168:95 169:50 170:287
171:2 192:5434 193:2230 194:2113 195:798 196:426
198:3713 199:3223 200:2371 201:1 202:3055 203:4561
204:3309 205:2151 206:2503 207:2650 208:2574 209:2799
210:557 211:201 212:878 213:592 214:9 215:18
216:3014 217:459 218:21
End of report
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