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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 Wed 26 Dec, 2001
Analysis Summary
----------------
BGP routing table entries examined: 108531
Prefixes after maximum aggregation: 71940
Unique aggregates announced to Internet: 52061
Total ASes present in the Internet Routing Table: 12307
Origin-only ASes present in the Internet Routing Table: 10680
Origin ASes announcing only one prefix: 4622
Transit ASes present in the Internet Routing Table: 1627
Transit-only ASes present in the Internet Routing Table: 55
Average AS path length visible in the Internet Routing Table: 5.3
Max AS path length visible: 16
Illegal AS announcements present in the Routing Table: 13
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: 1145828288
Equivalent to 68 /8s, 75 /16s and 243 /24s
Percentage of available address space announced: 30.9
Percentage of allocated address space announced: 58.5
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 73222
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17045
Total APNIC prefixes after maximum aggregation: 10573
Prefixes being announced from the APNIC address blocks: 15487
Unique aggregates announced from the APNIC address blocks: 9799
APNIC Region origin ASes present in the Internet Routing Table: 1429
APNIC Region origin ASes announcing only one prefix: 466
APNIC Region transit ASes present in the Internet Routing Table: 240
Average APNIC Region AS path length visible: 5.2
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 77973616
Equivalent to 4 /8s, 165 /16s and 200 /24s
Percentage of available APNIC address space announced: 57.6
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: 73600
Total ARIN prefixes after maximum aggregation: 47468
Prefixes being announced from the ARIN address blocks: 52760
Unique aggregates announced from the ARIN address blocks: 16956
ARIN Region origin ASes present in the Internet Routing Table: 7293
ARIN Region origin ASes announcing only one prefix: 2248
ARIN Region transit ASes present in the Internet Routing Table: 746
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 180971980
Equivalent to 10 /8s, 201 /16s and 105 /24s
Percentage of available ARIN address space announced: 67.4
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: 17874
Total RIPE prefixes after maximum aggregation: 13899
Prefixes being announced from the RIPE address blocks: 14562
Unique aggregates announced from the RIPE address blocks: 9694
RIPE Region origin ASes present in the Internet Routing Table: 3531
RIPE Region origin ASes announcing only one prefix: 1908
RIPE Region transit ASes present in the Internet Routing Table: 628
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 105114368
Equivalent to 6 /8s, 67 /16s and 235 /24s
Percentage of available RIPE address space announced: 69.6
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
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 1484 1260 1028 Telstra Pty Ltd
2764 401 378 375 connect.com.au pty ltd
703 399 348 307 UUNET Technologies, Inc.
2907 370 1847 340 SINET Japan
7474 310 285 201 Optus Communications Pty Ltd
4755 297 117 82 Videsh Sanchar Nigam Ltd. Aut
4134 268 1874 98 Data Communications Bureau
2521 190 165 28 PSINet Japan
4766 185 1395 135 Korea Internet Exchange for "
1659 175 924 34 Taiwan Academic Network (TANe
17557 173 13 84 Pakistan Telecom
9443 172 45 68 Primus Telecommunications
4740 149 34 123 OzEmail ISP
9583 149 32 3 Satyam Infoway Ltd.,
9768 141 381 87 Korea Telecom
7539 140 121 139 TANet2, sponsored by NSC, TAI
4812 137 192 34 China Telecom (Group) - Shang
17676 121 1920 7 XTAGE CORPORATION
4713 120 942 107 NTT Communications Corporatio
7657 118 21 77 The Internet Group Limited
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1090 2673 859 UUNET Technologies, Inc.
3301 419 925 354 TeliaNet Sweden
1257 252 473 249 SWIPnet Swedish IP Network
3215 238 562 154 France Telecom / &Equant
680 233 2149 231 DFN-IP service G-WiN
5515 217 721 177 Sonera Finland Autonomous Sys
3320 196 1960 165 Deutsche Telekom AG
786 178 1857 178 The JANET IP Service
719 164 289 118 LANLINK autonomous system
8708 148 20 140 Romania Data Systems S.A.
5400 147 59 84 Concert European Core Network
5549 141 78 62 Nextra Deutschland GmbH + Co.
2856 136 777 125 BTnet UK Regional network
3303 134 575 124 Swisscom Ltd
3269 115 663 70 TELECOM ITALIA
12302 112 7 36 MobiFon S.A.
517 110 232 108 KPNQwest Germany GmbH
8297 108 31 62 Teleglobe Autonomous System i
5511 99 192 79 France Telecom
1290 96 396 71 PSINet UK Ltd.
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2156 8829 1525 UUNET Technologies, Inc.
7018 1107 7401 865 AT&T
3967 943 363 468 Exodus Communication
705 909 376 400 UUNET Technologies, Inc.
1 874 8408 649 BBN Planet
1239 784 3169 607 Sprint
3908 764 1639 479 Supernet, Inc.
8010 718 62 11 PublicNet Communications, Inc
7046 699 823 450 UUNET Technologies, Inc.
209 620 1863 299 Qwest
4323 583 364 201 Time Warner Communications, I
852 578 978 382 Telus Advanced Communications
690 530 91 314 Merit Network
7066 509 195 251 Virginia Polytechnic Institut
2914 459 2226 430 Verio, Inc.
7132 404 470 168 Southwestern Bell Internet Se
3549 403 836 200 Global Crossing
2149 401 230 338 Performance Systems, Inc.
3561 383 2253 330 Cable & Wireless USA
577 353 588 221 Bell Advanced Communications
Global Per AS Maximum Aggr summary
----------------------------------
ASN Net Savings Description
8010 707 PublicNet Communications, Inc
705 509 UUNET Technologies, Inc.
3967 475 Exodus Communication
1221 456 Telstra Pty Ltd
4323 382 Time Warner Communications, I
4151 325 USDA
209 321 Qwest
3908 285 Supernet, Inc.
11371 271 Rhythms NetConnections
7066 258 Virginia Polytechnic Institut
7046 249 UUNET Technologies, Inc.
7018 242 AT&T
6347 238 SAVVIS Communications Corpora
7132 236 Southwestern Bell Internet Se
702 231 UUNET Technologies, Inc.
1 225 BBN Planet
690 216 Merit Network
4755 215 Videsh Sanchar Nigam Ltd. Aut
3549 203 Global Crossing
4355 198 EarthLink, Inc.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65500 PRIVATE 62.40.11.0/24 8469 PIRONET NDH AG
65500 PRIVATE 195.227.39.0/24 8469 PIRONET NDH AG
65500 PRIVATE 195.227.73.0/24 8469 PIRONET NDH AG
65500 PRIVATE 195.227.79.0/24 8469 PIRONET NDH AG
65500 PRIVATE 195.227.88.0/24 8469 PIRONET NDH AG
65021 PRIVATE 203.75.135.0/27 3462 Data Communication B
65021 PRIVATE 203.75.210.129/32 3462 Data Communication B
65021 PRIVATE 203.75.210.130/32 3462 Data Communication B
65021 PRIVATE 203.75.210.131/32 3462 Data Communication B
65021 PRIVATE 203.75.210.132/32 3462 Data Communication B
65021 PRIVATE 203.75.232.0/27 3462 Data Communication B
65021 PRIVATE 203.75.232.160/27 3462 Data Communication B
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
132.0.0.0/10 568 DISO-UNRRA
134.137.0.0/16 400 Headquarters Standard Systems
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.
153.34.0.0/15 701 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
191.9.200.0/24 1290 PSINet UK Ltd.
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 /8:18 /9:5 /10:7 /11:11 /12:37
/13:91 /14:229 /15:390 /16:7083 /17:1370 /18:2468
/19:7197 /20:6276 /21:4738 /22:7195 /23:8948 /24:61165
/25:317 /26:301 /27:210 /28:170 /29:114 /30:147
/31:0 /32:44
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1381 2156 UUNET Technologies, Inc.
1221 1338 1484 Telstra Pty Ltd
705 793 909 UUNET Technologies, Inc.
3967 761 943 Exodus Communication
702 706 1090 UUNET Technologies, Inc.
8010 702 718 PublicNet Communications, Inc
7018 575 1107 AT&T
7046 535 699 UUNET Technologies, Inc.
3908 527 764 Supernet, Inc.
690 526 530 Merit Network
4323 493 583 Time Warner Communications, I
7066 480 509 Virginia Polytechnic Institut
1239 450 784 Sprint
1 449 874 BBN Planet
209 447 620 Qwest
852 367 578 Telus Advanced Communications
2764 355 401 connect.com.au pty ltd
703 323 399 UUNET Technologies, Inc.
2149 303 401 Performance Systems, Inc.
4151 295 341 USDA
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 9:1 12:446 13:10 15:2 17:5
20:1 24:807 25:1 32:73 38:14 40:4
43:1 44:2 52:1 53:2 57:13 61:173
62:155 63:2359 64:1490 65:1027 66:744 67:17
68:6 80:134 128:61 129:111 130:24 131:42
132:14 133:2 134:128 135:10 136:121 137:107
138:63 139:30 140:102 141:58 142:65 143:42
144:55 145:12 146:216 147:93 148:154 149:88
150:40 151:38 152:376 153:34 154:6 155:83
156:84 157:122 158:71 159:77 160:45 161:54
162:84 163:129 164:335 165:102 166:206 167:161
168:115 169:48 170:300 171:2 191:1 192:5360
193:2061 194:2066 195:847 196:430 198:3760 199:3319
200:2414 201:1 202:2869 203:4516 204:3332 205:2188
206:2604 207:2683 208:2613 209:2943 210:567 211:154
212:890 213:553 214:9 215:15 216:2961 217:397
218:11
End of report
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