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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 Mon 31 Dec, 2001
Analysis Summary
----------------
BGP routing table entries examined: 106825
Prefixes after maximum aggregation: 71527
Unique aggregates announced to Internet: 52057
Total ASes present in the Internet Routing Table: 12284
Origin-only ASes present in the Internet Routing Table: 10680
Origin ASes announcing only one prefix: 4623
Transit ASes present in the Internet Routing Table: 1604
Transit-only ASes present in the Internet Routing Table: 52
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: 9
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: 1163459592
Equivalent to 69 /8s, 88 /16s and 252 /24s
Percentage of available address space announced: 31.4
Percentage of allocated address space announced: 59.4
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 71649
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16575
Total APNIC prefixes after maximum aggregation: 10396
Prefixes being announced from the APNIC address blocks: 15181
Unique aggregates announced from the APNIC address blocks: 9774
APNIC Region origin ASes present in the Internet Routing Table: 1414
APNIC Region origin ASes announcing only one prefix: 459
APNIC Region transit ASes present in the Internet Routing Table: 239
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 78278592
Equivalent to 4 /8s, 170 /16s and 111 /24s
Percentage of available APNIC address space announced: 57.9
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: 72404
Total ARIN prefixes after maximum aggregation: 47242
Prefixes being announced from the ARIN address blocks: 52101
Unique aggregates announced from the ARIN address blocks: 16977
ARIN Region origin ASes present in the Internet Routing Table: 7283
ARIN Region origin ASes announcing only one prefix: 2261
ARIN Region transit ASes present in the Internet Routing Table: 727
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 181455048
Equivalent to 10 /8s, 208 /16s and 200 /24s
Percentage of available ARIN address space announced: 67.6
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: 17839
Total RIPE prefixes after maximum aggregation: 13889
Prefixes being announced from the RIPE address blocks: 14554
Unique aggregates announced from the RIPE address blocks: 9710
RIPE Region origin ASes present in the Internet Routing Table: 3535
RIPE Region origin ASes announcing only one prefix: 1903
RIPE Region transit ASes present in the Internet Routing Table: 629
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 105221632
Equivalent to 6 /8s, 69 /16s and 142 /24s
Percentage of available RIPE address space announced: 69.7
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 1333 1258 986 Telstra Pty Ltd
2764 402 378 376 connect.com.au pty ltd
703 399 344 306 UUNET Technologies, Inc.
2907 395 1891 361 SINET Japan
7474 311 285 202 Optus Communications Pty Ltd
4755 290 113 82 Videsh Sanchar Nigam Ltd. Aut
4134 268 1874 98 Data Communications Bureau
4766 185 1395 135 Korea Internet Exchange for "
1659 174 924 34 Taiwan Academic Network (TANe
9443 173 45 69 Primus Telecommunications
17557 172 13 86 Pakistan Telecom
9583 152 32 3 Satyam Infoway Ltd.,
4740 149 34 123 OzEmail ISP
4812 143 288 36 China Telecom (Group) - Shang
9768 143 381 87 Korea Telecom
7657 125 22 84 The Internet Group Limited
17676 121 1920 7 XTAGE CORPORATION
4780 117 186 42 Digital United Inc.
4713 116 910 103 NTT Communications Corporatio
9800 112 194 21 CHINA UNICOM
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1090 2671 860 UUNET Technologies, Inc.
3301 401 925 353 TeliaNet Sweden
1257 252 473 249 SWIPnet Swedish IP Network
3215 236 562 152 France Telecom / &Equant
680 232 2148 230 DFN-IP service G-WiN
5515 217 721 177 Sonera Finland Autonomous Sys
3320 197 1962 166 Deutsche Telekom AG
786 181 1873 181 The JANET IP Service
719 164 289 118 LANLINK autonomous system
8708 149 20 140 Romania Data Systems S.A.
5400 146 59 83 Concert European Core Network
5549 140 78 64 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 111 7 35 MobiFon S.A.
517 109 230 107 KPNQwest Germany GmbH
8297 108 31 62 Teleglobe Autonomous System i
5511 99 192 79 France Telecom
1290 95 396 70 PSINet UK Ltd.
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2143 8793 1519 UUNET Technologies, Inc.
7018 1120 7404 875 AT&T
3967 926 361 447 Exodus Communication
1 869 8406 646 BBN Planet
1239 782 3154 604 Sprint
3908 777 1639 479 Supernet, Inc.
8010 715 62 11 PublicNet Communications, Inc
7046 697 823 442 UUNET Technologies, Inc.
209 621 1862 297 Qwest
4323 585 364 201 Time Warner Communications, I
852 578 978 382 Telus Advanced Communications
690 533 76 318 Merit Network
705 474 349 295 UUNET Technologies, Inc.
2914 459 2226 430 Verio, Inc.
3549 404 836 201 Global Crossing
7132 402 470 168 Southwestern Bell Internet Se
2149 398 230 335 Performance Systems, Inc.
3561 380 2253 330 Cable & Wireless USA
577 353 588 221 Bell Advanced Communications
3741 350 730 239 The Internet Solution
Global Per AS Maximum Aggr summary
----------------------------------
ASN Net Savings Description
8010 704 PublicNet Communications, Inc
3967 479 Exodus Communication
4323 384 Time Warner Communications, I
1221 347 Telstra Pty Ltd
209 324 Qwest
4151 324 USDA
3908 298 Supernet, Inc.
11371 271 Rhythms NetConnections
7046 255 UUNET Technologies, Inc.
7018 245 AT&T
6347 238 SAVVIS Communications Corpora
7132 234 Southwestern Bell Internet Se
702 230 UUNET Technologies, Inc.
1 223 BBN Planet
690 215 Merit Network
4755 208 Videsh Sanchar Nigam Ltd. Aut
3549 203 Global Crossing
4355 198 EarthLink, Inc.
852 196 Telus Advanced Communications
6517 196 Yipes Communications, Inc.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
2027 UNALLOCATED 150.185.128.0/18 8143 Publicom Corp.
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 /8:19 /9:5 /10:7 /11:11 /12:37
/13:91 /14:229 /15:391 /16:7067 /17:1367 /18:2468
/19:7183 /20:6290 /21:4726 /22:7151 /23:8895 /24:59956
/25:243 /26:243 /27:156 /28:108 /29:85 /30:78
/31:0 /32:19
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1371 2143 UUNET Technologies, Inc.
1221 1187 1333 Telstra Pty Ltd
3967 745 926 Exodus Communication
702 705 1090 UUNET Technologies, Inc.
8010 699 715 PublicNet Communications, Inc
7018 583 1120 AT&T
3908 535 777 Supernet, Inc.
7046 531 697 UUNET Technologies, Inc.
690 530 533 Merit Network
4323 495 585 Time Warner Communications, I
1239 452 782 Sprint
209 448 621 Qwest
1 445 869 BBN Planet
852 367 578 Telus Advanced Communications
705 358 474 UUNET Technologies, Inc.
2764 356 402 connect.com.au pty ltd
703 325 399 UUNET Technologies, Inc.
2149 300 398 Performance Systems, Inc.
4151 294 340 USDA
7474 276 311 Optus Communications Pty Ltd
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 9:1 12:445 13:10 15:2 17:5
20:1 24:802 25:1 32:73 38:14 40:4
43:1 44:2 52:1 53:2 57:13 61:185
62:153 63:1916 64:1489 65:1035 66:740 67:19
68:7 80:126 128:61 129:109 130:24 131:41
132:14 133:2 134:110 135:10 136:49 137:108
138:62 139:30 140:103 141:57 142:52 143:44
144:55 145:12 146:201 147:94 148:154 149:88
150:39 151:38 152:378 153:34 154:6 155:81
156:84 157:121 158:71 159:77 160:26 161:54
162:85 163:122 164:119 165:100 166:204 167:160
168:114 169:48 170:298 171:2 191:1 192:5288
193:2065 194:2068 195:836 196:430 198:3714 199:3294
200:2397 201:1 202:2839 203:4505 204:3267 205:2179
206:2545 207:2645 208:2619 209:2986 210:521 211:154
212:879 213:555 214:9 215:15 216:2943 217:399
218:11
End of report
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