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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 26 Feb, 2002
Analysis Summary
----------------
BGP routing table entries examined: 108575
Prefixes after maximum aggregation: 71936
Unique aggregates announced to Internet: 51855
Total ASes present in the Internet Routing Table: 12608
Origin-only ASes present in the Internet Routing Table: 10907
Origin ASes announcing only one prefix: 4799
Transit ASes present in the Internet Routing Table: 1701
Transit-only ASes present in the Internet Routing Table: 58
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: 15
Number of addresses announced to Internet: 1174391944
Equivalent to 69 /8s, 255 /16s and 204 /24s
Percentage of available address space announced: 31.7
Percentage of allocated address space announced: 60.0
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 72389
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17365
Total APNIC prefixes after maximum aggregation: 10534
Prefixes being announced from the APNIC address blocks: 15920
Unique aggregates announced from the APNIC address blocks: 9843
APNIC Region origin ASes present in the Internet Routing Table: 1446
APNIC Region origin ASes announcing only one prefix: 495
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: 80102464
Equivalent to 4 /8s, 198 /16s and 68 /24s
Percentage of available APNIC address space announced: 59.2
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: 73074
Total ARIN prefixes after maximum aggregation: 47332
Prefixes being announced from the ARIN address blocks: 51506
Unique aggregates announced from the ARIN address blocks: 16315
ARIN Region origin ASes present in the Internet Routing Table: 7459
ARIN Region origin ASes announcing only one prefix: 2333
ARIN Region transit ASes present in the Internet Routing Table: 770
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 194745924
Equivalent to 11 /8s, 155 /16s and 150 /24s
Percentage of available ARIN address space announced: 72.5
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: 18136
Total RIPE prefixes after maximum aggregation: 14070
Prefixes being announced from the RIPE address blocks: 14924
Unique aggregates announced from the RIPE address blocks: 10014
RIPE Region origin ASes present in the Internet Routing Table: 3644
RIPE Region origin ASes announcing only one prefix: 1971
RIPE Region transit ASes present in the Internet Routing Table: 662
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 106924928
Equivalent to 6 /8s, 95 /16s and 139 /24s
Percentage of available RIPE address space announced: 70.8
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 1299 1245 957 Telstra Pty Ltd
4538 454 1162 16 China Education and Research
703 401 359 310 UUNET Technologies, Inc.
2907 399 1942 365 SINET Japan
2764 387 361 362 connect.com.au pty ltd
7474 299 289 203 Optus Communications Pty Ltd
4755 293 111 85 Videsh Sanchar Nigam Ltd. Aut
4134 270 1874 98 Data Communications Bureau
9394 253 112 3 CHINA RAILWAY Internet(CRNET)
17557 229 17 97 Pakistan Telecom
4766 213 1392 151 Korea Internet Exchange for "
9443 164 44 62 Primus Telecommunications
7539 162 220 155 TANet2, sponsored by NSC, TAI
9768 146 385 88 Korea Telecom
4804 144 84 68 Microplex PTY LTD
9583 141 32 5 Satyam Infoway Ltd.,
4713 126 914 104 NTT Communications Corporatio
7657 122 22 85 The Internet Group Limited
4780 120 186 40 Digital United Inc.
17676 115 1840 17 XTAGE CORPORATION
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1060 2632 854 UUNET Technologies, Inc.
3301 397 924 351 TeliaNet Sweden
1257 245 487 241 SWIPnet Swedish IP Network
3215 238 570 155 France Telecom / &Equant
680 231 2147 230 DFN-IP service G-WiN
5515 217 713 174 Sonera Finland Autonomous Sys
5400 197 82 93 Concert European Core Network
3320 196 1964 172 Deutsche Telekom AG
786 182 1874 182 The JANET IP Service
719 165 305 120 LANLINK autonomous system
8708 159 22 146 Romania Data Systems S.A.
2856 131 790 120 BTnet UK Regional network
3303 123 577 123 Swisscom Ltd
3269 117 693 71 TELECOM ITALIA
8297 116 40 65 Teleglobe Autonomous System i
12302 114 7 35 MobiFon S.A.
517 100 226 98 KPNQwest Germany GmbH
2874 95 100 35 Global One Services AB
2830 92 210 73 UUNET Dual-Homed customers
1290 88 399 62 PSINet UK Ltd.
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2167 8481 1516 UUNET Technologies, Inc.
7018 1218 7494 918 AT&T
3908 833 1661 481 Supernet, Inc.
1 823 8103 598 BBN Planet
1239 803 3332 619 Sprint
4323 652 435 256 Time Warner Communications, I
7046 649 854 425 UUNET Technologies, Inc.
852 617 1119 409 Telus Advanced Communications
209 541 1974 310 Qwest
3549 459 823 234 Global Crossing
7132 455 510 164 Southwestern Bell Internet Se
2914 451 2192 419 Verio, Inc.
690 438 67 284 Merit Network
705 378 126 268 UUNET Technologies, Inc.
7843 377 298 47 Adelphia Corp.
2149 371 192 309 Performance Systems, Inc.
3741 343 730 234 The Internet Solution
577 337 587 220 Bell Advanced Communications
2386 331 355 190 AT&T Data Communications Serv
3561 330 2171 299 Cable & Wireless USA
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4538 454 438 China Education and Research
4323 652 396 Time Warner Communications, I
3908 833 352 Supernet, Inc.
1221 1299 342 Telstra Pty Ltd
7843 377 330 Adelphia Corp.
7018 1218 300 AT&T
7132 455 291 Southwestern Bell Internet Se
4151 305 289 USDA
6198 307 274 BellSouth Network Solutions,
11371 278 272 Rhythms NetConnections
9394 253 250 CHINA RAILWAY Internet(CRNET)
6347 316 238 SAVVIS Communications Corpora
209 541 231 Qwest
7029 244 229 Alltel Information Services,
1 823 225 BBN Planet
3549 459 225 Global Crossing
7046 649 224 UUNET Technologies, Inc.
852 617 208 Telus Advanced Communications
4755 293 208 Videsh Sanchar Nigam Ltd. Aut
702 1060 206 UUNET Technologies, Inc.
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
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 /8:19 /9:6 /10:8 /11:12 /12:37
/13:91 /14:234 /15:396 /16:7154 /17:1440 /18:2558
/19:7376 /20:6798 /21:4804 /22:7294 /23:8921 /24:60482
/25:215 /26:255 /27:119 /28:86 /29:91 /30:129
/31:0 /32:50
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1405 2167 UUNET Technologies, Inc.
1221 1155 1299 Telstra Pty Ltd
702 683 1060 UUNET Technologies, Inc.
7018 635 1218 AT&T
3908 588 833 Supernet, Inc.
4323 525 652 Time Warner Communications, I
1239 471 803 Sprint
7046 463 649 UUNET Technologies, Inc.
690 434 438 Merit Network
1 426 823 BBN Planet
852 373 617 Telus Advanced Communications
209 359 541 Qwest
2764 343 387 connect.com.au pty ltd
3549 325 459 Global Crossing
703 323 401 UUNET Technologies, Inc.
705 321 378 UUNET Technologies, Inc.
2149 281 371 Performance Systems, Inc.
6197 275 326 BellSouth Network Solutions,
7066 273 302 Virginia Polytechnic Institut
11371 272 278 Rhythms NetConnections
Number of /24s announced per /8 block (Global)
----------------------------------------------
3:1 9:1 12:489 13:10 15:1 17:5
20:2 24:781 25:1 32:68 38:9 40:6
44:1 57:14 61:230 62:170 63:1884 64:1118
65:1036 66:716 67:34 68:7 80:208 81:5
128:62 129:123 130:21 131:57 132:11 133:3
134:125 135:10 136:248 137:101 138:147 139:47
140:184 141:63 142:88 143:37 144:143 145:12
146:216 147:156 148:147 149:92 150:41 151:45
152:351 153:31 154:7 155:85 156:75 157:121
158:78 159:116 160:23 161:55 162:139 163:115
164:75 165:121 166:224 167:184 168:118 169:48
170:292 171:2 189:1 192:5431 193:2169 194:2063
195:789 196:440 198:3735 199:3251 200:2348 201:1
202:2923 203:4460 204:3315 205:2170 206:2517 207:2626
208:2568 209:2806 210:514 211:196 212:895 213:571
214:9 215:18 216:2962 217:450 218:18
End of report
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