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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 Fri 28 Dec, 2001
Analysis Summary
----------------
BGP routing table entries examined: 107181
Prefixes after maximum aggregation: 71622
Unique aggregates announced to Internet: 51989
Total ASes present in the Internet Routing Table: 12269
Origin-only ASes present in the Internet Routing Table: 10667
Origin ASes announcing only one prefix: 4619
Transit ASes present in the Internet Routing Table: 1602
Transit-only ASes present in the Internet Routing Table: 53
Average AS path length visible in the Internet Routing Table: 5.3
Max AS path length visible: 19
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: 1145811720
Equivalent to 68 /8s, 75 /16s and 179 /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: 72062
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 16579
Total APNIC prefixes after maximum aggregation: 10407
Prefixes being announced from the APNIC address blocks: 15178
Unique aggregates announced from the APNIC address blocks: 9759
APNIC Region origin ASes present in the Internet Routing Table: 1411
APNIC Region origin ASes announcing only one prefix: 455
APNIC Region transit ASes present in the Internet Routing Table: 238
Average APNIC Region AS path length visible: 5.2
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 77911232
Equivalent to 4 /8s, 164 /16s and 212 /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: 72740
Total ARIN prefixes after maximum aggregation: 47309
Prefixes being announced from the ARIN address blocks: 52469
Unique aggregates announced from the ARIN address blocks: 16950
ARIN Region origin ASes present in the Internet Routing Table: 7267
ARIN Region origin ASes announcing only one prefix: 2255
ARIN Region transit ASes present in the Internet Routing Table: 722
Average ARIN Region AS path length visible: 5.2
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 180991432
Equivalent to 10 /8s, 201 /16s and 181 /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: 17855
Total RIPE prefixes after maximum aggregation: 13906
Prefixes being announced from the RIPE address blocks: 14563
Unique aggregates announced from the RIPE address blocks: 9708
RIPE Region origin ASes present in the Internet Routing Table: 3538
RIPE Region origin ASes announcing only one prefix: 1909
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: 19
Number of RIPE addresses announced to Internet: 105201664
Equivalent to 6 /8s, 69 /16s and 64 /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 1337 1258 986 Telstra Pty Ltd
2907 410 1942 374 SINET Japan
2764 403 378 377 connect.com.au pty ltd
703 400 344 307 UUNET Technologies, Inc.
7474 311 285 202 Optus Communications Pty Ltd
4755 294 114 83 Videsh Sanchar Nigam Ltd. Aut
4134 268 1874 98 Data Communications Bureau
4766 185 1395 135 Korea Internet Exchange for "
1659 175 924 34 Taiwan Academic Network (TANe
9443 173 45 69 Primus Telecommunications
17557 173 13 87 Pakistan Telecom
9583 152 32 3 Satyam Infoway Ltd.,
4740 148 34 122 OzEmail ISP
9768 141 381 87 Korea Telecom
4812 137 192 34 China Telecom (Group) - Shang
7657 123 21 82 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 1091 2673 862 UUNET Technologies, Inc.
3301 400 925 352 TeliaNet Sweden
1257 252 473 249 SWIPnet Swedish IP Network
3215 237 562 153 France Telecom / &Equant
680 233 2149 231 DFN-IP service G-WiN
5515 217 721 177 Sonera Finland Autonomous Sys
3320 197 1962 166 Deutsche Telekom AG
786 179 1858 179 The JANET IP Service
719 164 289 118 LANLINK autonomous system
8708 149 20 140 Romania Data Systems S.A.
5400 146 61 83 Concert European Core Network
5549 140 78 63 Nextra Deutschland GmbH + Co.
2856 136 777 125 BTnet UK Regional network
3303 134 575 124 Swisscom Ltd
3269 114 661 69 TELECOM ITALIA
12302 112 7 36 MobiFon S.A.
517 109 230 107 KPNQwest Germany GmbH
8297 108 31 62 Teleglobe Autonomous System i
5511 98 191 78 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 2147 8825 1520 UUNET Technologies, Inc.
7018 1112 7386 868 AT&T
3967 935 361 459 Exodus Communication
705 908 376 400 UUNET Technologies, Inc.
1 868 8409 646 BBN Planet
1239 781 3153 605 Sprint
3908 772 1638 478 Supernet, Inc.
8010 715 62 11 PublicNet Communications, Inc
7046 700 823 451 UUNET Technologies, Inc.
209 617 1862 296 Qwest
4323 584 364 201 Time Warner Communications, I
852 578 978 382 Telus Advanced Communications
690 533 77 319 Merit Network
2914 458 2226 429 Verio, Inc.
2149 403 246 340 Performance Systems, Inc.
3549 403 836 200 Global Crossing
7132 402 470 168 Southwestern Bell Internet Se
3561 379 2251 329 Cable & Wireless USA
577 352 588 220 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
705 508 UUNET Technologies, Inc.
3967 476 Exodus Communication
4323 383 Time Warner Communications, I
1221 351 Telstra Pty Ltd
4151 325 USDA
209 321 Qwest
3908 294 Supernet, Inc.
11371 271 Rhythms NetConnections
7046 249 UUNET Technologies, Inc.
7018 244 AT&T
6347 237 SAVVIS Communications Corpora
7132 234 Southwestern Bell Internet Se
702 229 UUNET Technologies, Inc.
1 222 BBN Planet
690 214 Merit Network
4755 211 Videsh Sanchar Nigam Ltd. Aut
3549 203 Global Crossing
4355 198 EarthLink, Inc.
852 196 Telus Advanced Communications
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 /8:18 /9:5 /10:7 /11:11 /12:37
/13:91 /14:229 /15:390 /16:7058 /17:1365 /18:2466
/19:7182 /20:6266 /21:4714 /22:7158 /23:8883 /24:60367
/25:244 /26:242 /27:158 /28:109 /29:86 /30:77
/31:0 /32:18
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1373 2147 UUNET Technologies, Inc.
1221 1191 1337 Telstra Pty Ltd
705 792 908 UUNET Technologies, Inc.
3967 754 935 Exodus Communication
702 705 1091 UUNET Technologies, Inc.
8010 699 715 PublicNet Communications, Inc
7018 577 1112 AT&T
7046 536 700 UUNET Technologies, Inc.
690 530 533 Merit Network
3908 530 772 Supernet, Inc.
4323 494 584 Time Warner Communications, I
1239 451 781 Sprint
209 445 617 Qwest
1 443 868 BBN Planet
852 367 578 Telus Advanced Communications
2764 357 403 connect.com.au pty ltd
703 326 400 UUNET Technologies, Inc.
2149 304 403 Performance Systems, Inc.
4151 295 341 USDA
7474 276 311 Optus Communications Pty Ltd
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 9:1 12:446 13:10 15:2 17:5
20:1 24:808 25:1 32:73 38:14 40:4
43:1 44:2 52:1 53:2 57:13 61:182
62:152 63:2352 64:1489 65:1027 66:739 67:17
68:6 80:134 128:61 129:110 130:24 131:41
132:12 133:2 134:107 135:10 136:45 137:107
138:63 139:30 140:101 141:58 142:53 143:44
144:55 145:12 146:201 147:94 148:154 149:88
150:39 151:38 152:376 153:34 154:8 155:81
156:85 157:121 158:71 159:77 160:26 161:54
162:84 163:123 164:119 165:100 166:204 167:162
168:115 169:48 170:300 171:2 191:1 192:5283
193:2069 194:2069 195:839 196:425 198:3707 199:3307
200:2413 201:1 202:2833 203:4509 204:3275 205:2178
206:2547 207:2637 208:2617 209:2938 210:529 211:149
212:878 213:553 214:9 215:16 216:2947 217:403
218:11
End of report
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