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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 05 Feb, 2002
Analysis Summary
----------------
BGP routing table entries examined: 108694
Prefixes after maximum aggregation: 72029
Unique aggregates announced to Internet: 52610
Total ASes present in the Internet Routing Table: 12494
Origin-only ASes present in the Internet Routing Table: 10822
Origin ASes announcing only one prefix: 4723
Transit ASes present in the Internet Routing Table: 1672
Transit-only ASes present in the Internet Routing Table: 62
Average AS path length visible in the Internet Routing Table: 5.4
Max AS path length visible: 20
Illegal AS announcements present in the Routing Table: 4
Non-routable prefixes present in the Routing Table: 4
Prefixes being announced from the IANA Reserved Address blocks: 14
Number of addresses announced to Internet: 1182129160
Equivalent to 70 /8s, 117 /16s and 220 /24s
Percentage of available address space announced: 31.9
Percentage of allocated address space announced: 60.4
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 72692
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17546
Total APNIC prefixes after maximum aggregation: 10632
Prefixes being announced from the APNIC address blocks: 16024
Unique aggregates announced from the APNIC address blocks: 9816
APNIC Region origin ASes present in the Internet Routing Table: 1442
APNIC Region origin ASes announcing only one prefix: 479
APNIC Region transit ASes present in the Internet Routing Table: 249
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 79165760
Equivalent to 4 /8s, 183 /16s and 249 /24s
Percentage of available APNIC address space announced: 58.5
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: 73063
Total ARIN prefixes after maximum aggregation: 47347
Prefixes being announced from the ARIN address blocks: 51230
Unique aggregates announced from the ARIN address blocks: 17140
ARIN Region origin ASes present in the Internet Routing Table: 7389
ARIN Region origin ASes announcing only one prefix: 2293
ARIN Region transit ASes present in the Internet Routing Table: 754
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 20
Number of ARIN addresses announced to Internet: 185466436
Equivalent to 11 /8s, 13 /16s and 254 /24s
Percentage of available ARIN address space announced: 69.1
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: 18083
Total RIPE prefixes after maximum aggregation: 14050
Prefixes being announced from the RIPE address blocks: 14859
Unique aggregates announced from the RIPE address blocks: 9884
RIPE Region origin ASes present in the Internet Routing Table: 3600
RIPE Region origin ASes announcing only one prefix: 1951
RIPE Region transit ASes present in the Internet Routing Table: 652
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 106561536
Equivalent to 6 /8s, 90 /16s and 0 /24s
Percentage of available RIPE address space announced: 70.6
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 1327 1259 972 Telstra Pty Ltd
4538 451 1162 16 China Education and Research
703 406 367 298 UUNET Technologies, Inc.
2907 395 1893 364 SINET Japan
2764 394 362 371 connect.com.au pty ltd
7474 301 286 204 Optus Communications Pty Ltd
4755 298 113 87 Videsh Sanchar Nigam Ltd. Aut
4134 268 1858 100 Data Communications Bureau
9394 225 112 3 CHINA RAILWAY Internet(CRNET)
4766 206 1393 145 Korea Internet Exchange for "
17557 205 15 88 Pakistan Telecom
9443 159 44 59 Primus Telecommunications
1659 152 924 34 Taiwan Academic Network (TANe
7539 150 136 145 TANet2, sponsored by NSC, TAI
9768 146 385 88 Korea Telecom
4197 138 13 5 Global OnLine Japan K.K.
9583 138 32 5 Satyam Infoway Ltd.,
4740 137 33 112 OzEmail ISP
7657 119 21 82 The Internet Group Limited
4713 117 914 103 NTT Communications Corporatio
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1111 2621 861 UUNET Technologies, Inc.
3301 404 924 357 TeliaNet Sweden
1257 253 487 249 SWIPnet Swedish IP Network
3215 240 562 153 France Telecom / &Equant
680 233 2148 231 DFN-IP service G-WiN
5515 218 705 175 Sonera Finland Autonomous Sys
5400 199 82 96 Concert European Core Network
3320 194 1964 170 Deutsche Telekom AG
786 182 1874 182 The JANET IP Service
719 165 289 119 LANLINK autonomous system
8708 153 21 142 Romania Data Systems S.A.
2856 131 790 120 BTnet UK Regional network
3303 124 575 124 Swisscom Ltd
3269 117 693 71 TELECOM ITALIA
8297 117 40 66 Teleglobe Autonomous System i
12302 115 7 36 MobiFon S.A.
517 103 227 101 KPNQwest Germany GmbH
5603 95 13 60 SiOL Internet d.o.o.
5511 93 192 82 France Telecom
1267 91 1471 41 Infostrada S.p.A.
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2079 8302 1499 UUNET Technologies, Inc.
7018 1739 7511 976 AT&T
1 840 8153 611 BBN Planet
3908 810 1662 470 Supernet, Inc.
1239 784 3231 611 Sprint
4323 645 432 239 Time Warner Communications, I
7046 627 849 414 UUNET Technologies, Inc.
852 562 994 365 Telus Advanced Communications
209 521 1876 297 Qwest
690 492 72 307 Merit Network
2914 456 2198 425 Verio, Inc.
7132 453 505 163 Southwestern Bell Internet Se
3549 425 819 215 Global Crossing
705 399 108 277 UUNET Technologies, Inc.
2149 395 210 330 Performance Systems, Inc.
2386 388 361 236 AT&T Data Communications Serv
3561 371 2221 326 Cable & Wireless USA
577 351 604 219 Bell Advanced Communications
3741 349 731 240 The Internet Solution
6197 324 263 166 BellSouth Network Solutions,
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
7018 1739 763 AT&T
4538 451 435 China Education and Research
4323 645 406 Time Warner Communications, I
1221 1327 355 Telstra Pty Ltd
3908 810 340 Supernet, Inc.
4151 311 295 USDA
7132 453 290 Southwestern Bell Internet Se
11371 278 271 Rhythms NetConnections
702 1111 250 UUNET Technologies, Inc.
6347 311 232 SAVVIS Communications Corpora
1 840 229 BBN Planet
7843 264 227 Adelphia Corp.
209 521 224 Qwest
9394 225 222 CHINA RAILWAY Internet(CRNET)
7046 627 213 UUNET Technologies, Inc.
4755 298 211 Videsh Sanchar Nigam Ltd. Aut
3549 425 210 Global Crossing
4355 235 204 EarthLink, Inc.
6198 297 198 BellSouth Network Solutions,
6517 230 198 Yipes Communications, Inc.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
1877 UNALLOCATED 192.108.201.0/24 1880 Stupi, house man's p
65534 PRIVATE 200.40.20.0/24 6057 Av. Fernandez Crespo
65534 PRIVATE 200.40.23.0/24 6057 Av. Fernandez Crespo
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------
Prefix Origin AS Description
10.0.0.0/8 1653 SUNET Swedish University Netw
169.254.0.0/16 1653 SUNET Swedish University Netw
172.16.0.0/12 1653 SUNET Swedish University Netw
192.168.0.0/16 1653 SUNET Swedish University Netw
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
126.0.0.0/8 7336 Compass Communications
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 /9:6 /10:7 /11:12 /12:38
/13:91 /14:232 /15:392 /16:7157 /17:1419 /18:2489
/19:7335 /20:6692 /21:4822 /22:7283 /23:9001 /24:60676
/25:218 /26:270 /27:128 /28:99 /29:99 /30:166
/31:0 /32:43
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1329 2079 UUNET Technologies, Inc.
1221 1181 1327 Telstra Pty Ltd
7018 1145 1739 AT&T
702 733 1111 UUNET Technologies, Inc.
3908 564 810 Supernet, Inc.
4323 530 645 Time Warner Communications, I
690 488 492 Merit Network
1239 458 784 Sprint
7046 455 627 UUNET Technologies, Inc.
1 434 840 BBN Planet
2764 350 394 connect.com.au pty ltd
852 345 562 Telus Advanced Communications
209 343 521 Qwest
705 342 399 UUNET Technologies, Inc.
703 326 406 UUNET Technologies, Inc.
2386 312 388 AT&T Data Communications Serv
2149 300 395 Performance Systems, Inc.
3549 294 425 Global Crossing
7066 275 304 Virginia Polytechnic Institut
11371 272 278 Rhythms NetConnections
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:1 9:1 12:735 13:10 15:1 17:5
20:5 24:688 25:1 32:180 38:12 40:6
44:1 57:14 61:215 62:160 63:1876 64:1097
65:1014 66:624 67:32 68:5 80:171 81:4
128:64 129:122 130:22 131:51 132:11 133:2
134:128 135:9 136:245 137:105 138:146 139:46
140:162 141:61 142:65 143:39 144:150 145:12
146:214 147:138 148:144 149:86 150:38 151:43
152:368 153:32 154:8 155:80 156:77 157:121
158:80 159:88 160:22 161:55 162:96 163:127
164:74 165:126 166:227 167:164 168:118 169:47
170:291 171:4 192:5443 193:2229 194:2040 195:812
196:446 198:3733 199:3261 200:2335 201:1 202:2900
203:4548 204:3304 205:2145 206:2585 207:2633 208:2591
209:2893 210:525 211:158 212:898 213:586 214:9
215:19 216:2969 217:437 218:10
End of report
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