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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 13 Jan, 2004
Analysis Summary
----------------
BGP routing table entries examined: 131486
Prefixes after maximum aggregation: 80923
Unique aggregates announced to Internet: 63391
Total ASes present in the Internet Routing Table: 16426
Origin-only ASes present in the Internet Routing Table: 14265
Origin ASes announcing only one prefix: 6542
Transit ASes present in the Internet Routing Table: 2161
Transit-only ASes present in the Internet Routing Table: 71
Average AS path length visible in the Internet Routing Table: 4.9
Max AS path length visible: 30
Illegal AS announcements present in the Routing Table: 7
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 14
Number of addresses announced to Internet: 1276774628
Equivalent to 76 /8s, 26 /16s and 8 /24s
Percentage of available address space announced: 34.4
Percentage of allocated address space announced: 60.1
Percentage of available address space allocated: 57.3
Total number of prefixes smaller than registry allocations: 57949
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 24272
Total APNIC prefixes after maximum aggregation: 13063
Prefixes being announced from the APNIC address blocks: 22763
Unique aggregates announced from the APNIC address blocks: 12919
APNIC Region origin ASes present in the Internet Routing Table: 1972
APNIC Region origin ASes announcing only one prefix: 578
APNIC Region transit ASes present in the Internet Routing Table: 312
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 134040448
Equivalent to 7 /8s, 253 /16s and 75 /24s
Percentage of available APNIC address space announced: 72.2
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239
17408 - 18431, 23552 - 24575
APNIC Address Blocks 60/7, 202/7, 210/7, 218/7, 220/7 and 222/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 77313
Total ARIN prefixes after maximum aggregation: 47888
Prefixes being announced from the ARIN address blocks: 59833
Unique aggregates announced from the ARIN address blocks: 20829
ARIN Region origin ASes present in the Internet Routing Table: 8837
ARIN Region origin ASes announcing only one prefix: 3100
ARIN Region transit ASes present in the Internet Routing Table: 841
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 213976608
Equivalent to 12 /8s, 193 /16s and 6 /24s
Percentage of available ARIN address space announced: 75.0
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
25600 - 26591, 26624 - 27647, 29695 - 30719
31744 - 32767
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 198/7, 204/6, 208/7
and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 23359
Total RIPE prefixes after maximum aggregation: 17098
Prefixes being announced from the RIPE address blocks: 20225
Unique aggregates announced from the RIPE address blocks: 13446
RIPE Region origin ASes present in the Internet Routing Table: 5090
RIPE Region origin ASes announcing only one prefix: 2731
RIPE Region transit ASes present in the Internet Routing Table: 890
Average RIPE Region AS path length visible: 5.6
Max RIPE Region AS path length visible: 30
Number of RIPE addresses announced to Internet: 148178560
Equivalent to 8 /8s, 213 /16s and 6 /24s
Percentage of available RIPE address space announced: 67.9
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, 28672 - 29695
30720 - 31743
RIPE Address Blocks 62/8, 80/6, 84/8, 188/8, 193/8, 194/7,
212/7 and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 5388
Total LACNIC prefixes after maximum aggregation: 2194
Prefixes being announced from the LACNIC address blocks: 4991
Unique aggregates announced from the LACNIC address blocks: 3126
LACNIC Region origin ASes present in the Internet Routing Table: 365
LACNIC Region origin ASes announcing only one prefix: 106
LACNIC Region transit ASes present in the Internet Routing Table: 71
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 12
Number of LACNIC addresses announced to Internet: 13877760
Equivalent to 0 /8s, 211 /16s and 194 /24s
Percentage of available LACNIC address space announced: 41.4
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1149
Total AfriNIC prefixes after maximum aggregation: 680
Prefixes being announced from the AfriNIC address blocks: 735
Unique aggregates announced from the AfriNIC address blocks: 567
AfriNIC Region origin ASes present in the Internet Routing Table: 92
AfriNIC Region origin ASes announcing only one prefix: 27
AfriNIC Region transit ASes present in the Internet Routing Table: 12
Average AfriNIC Region AS path length visible: 5.0
Max AfriNIC Region AS path length visible: 16
Number of AfriNIC addresses announced to Internet: 1758208
Equivalent to 0 /8s, 26 /16s and 212 /24s
Percentage of available AfriNIC address space announced: 10.5
AfriNIC AS Blocks <none>
AfriNIC Address Blocks 196/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 904 1098 650 Telstra Pty Ltd
4134 694 2413 110 Data Communications Bureau
4766 403 2904 239 Korea Internet Exchange for "
2907 362 1847 339 SINET Japan
9443 344 69 79 Primus Telecommunications
703 338 372 262 UUNET
17557 309 22 150 Pakistan Telecom
17676 292 4300 38 XTAGE CORPORATION
2764 286 289 235 connect.com.au pty ltd
7474 270 305 213 Optus Communications Pty Ltd
4538 249 1811 21 China Education and Research
4755 223 130 58 Videsh Sanchar Nigam Ltd. Aut
9942 217 69 128 COMindico Australia
9583 215 44 12 Satyam Infoway Ltd.,
9800 214 347 55 CHINA UNICOM
9929 211 154 28 China Netcom Corp.
9498 181 30 33 BHARTI BT INTERNET LTD.
17642 153 40 112 RequestDSL BGP AS# for Sydney
17964 152 117 58 Beijing Dian-Xin-Tong Network
3786 148 752 130 DACOM Corporation
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1410 7048 975 AT&T
701 1400 8678 967 UUNET Technologies, Inc.
1239 944 3088 660 Sprint
6197 776 483 251 BellSouth Network Solutions,
18566 745 176 8 Covad Communications
3356 727 10893 583 Level 3 Communications, LLC
209 726 3530 507 Qwest
4323 674 589 202 Time Warner Communications, I
20115 579 324 332 Charter Communications
6198 546 340 195 BellSouth Network Solutions,
7843 510 535 119 Adelphia Corp.
852 505 1124 401 Telus Advanced Communications
7066 502 207 270 Virginia Polytechnic Institut
7132 462 7402 311 Southwestern Bell Internet Se
2386 418 544 219 AT&T Data Communications Serv
19029 403 171 258 New Edge Networks
690 398 58 268 Merit Network
4355 390 323 101 EarthLink, Inc.
27364 381 28 24 Armstrong Cable Services
705 379 196 234 UUNET Technologies, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 692 2076 575 UUNET - Commercial IP service
3301 333 1159 315 TeliaNet Sweden
3320 283 1972 233 Deutsche Telekom AG
8220 259 409 246 COLT Internet - International
1257 245 505 191 SWIPnet Swedish IP Network
680 229 2022 226 DFN-IP service G-WiN
13083 215 51 8 Mannesmann Datenverarbeitung
3246 186 424 184 Song Networks
786 175 1826 175 The JANET IP Service
5515 172 762 134 Sonera Solution Autonomous Sy
25186 168 201 109 France Telecom Transpac's Tra
8708 165 111 157 Romania Data Systems S.A.
3215 150 786 68 France Telecom Transpac
3303 138 557 138 Swisscom Ltd
5400 135 224 125 BT Ignite European Backbone
719 134 288 104 LANLINK autonomous system
12302 126 18 33 MobiFon S.A.
2856 119 1294 109 BTnet UK Regional network
3269 118 940 63 TELECOM ITALIA
3352 103 892 30 Ibernet, Internet Access Netw
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 350 120 69 ImpSat
8151 238 336 123 UniNet S.A. de C.V.
11172 198 77 44 Servicios Alestra S.A de C.V
16814 155 10 5 NSS, S.A.
7303 138 52 21 Telecom Argentina Stet-France
6505 132 90 92 Global One Communicaoes Ltda
6503 128 220 93 AVANTEL, S.A.
6147 124 78 20 Telefonica Del Peru
11340 108 3 29 Red Universitaria Nacional
15311 78 18 38 Telefonica Empresas
6535 77 5 19 Chilesat Servicios Empresari
11992 76 25 32 Integrated Systems
4270 69 17 8 Red de Interconexion Universi
11311 66 7 22 Sinectis S.A.
7080 64 4 1 Electronica y Comunicaciones
27699 62 168 15 TELECOMUNICACOES DE SAO PAULO
7738 60 218 13 Telecomunicacoes da Bahia S.A
14420 60 4 22 ANDINATEL S.A.
1916 59 247 39 Fundacao de Amparo a Pesquisa
5639 58 7 8 Telecommunications Services o
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 249 632 218 The Internet Solution
5536 103 8 3 Internet Egypt Network
2018 94 297 92 Tertiary Education Network
2905 90 272 80 The Internetworking Company o
2561 58 6 3 Egyptian Universities Network
11845 36 9 11 Data Pro Business Online
3208 33 2 1 ARN Network
16637 26 9 19 Johnnic e-Ventures
9129 25 3 4 UUNET Kenya
5713 24 93 22 Telkom SA Ltd
12455 24 4 2 Jambonet Autonomous system
24835 23 18 6 RAYA Telecom - Egypt
6713 22 38 9 Itissalat Al-MAGHRIB
8524 18 2 4 AUCEGYPT Autonomous System
10798 18 1 12 Standard Bank of South Africa
12258 15 3 10 Vodacom Internet Company
15706 15 2 5 Sudatel Internet Exchange Aut
17148 14 1 8 First National Bank
2609 12 10 3 Tunisia BackBone AS
8346 12 6 12 SONATEL-AS Autonomous System
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 745 737 Covad Communications
4134 694 584 Data Communications Bureau
6197 776 525 BellSouth Network Solutions,
4323 674 472 Time Warner Communications, I
701 1400 433 UUNET Technologies, Inc.
7843 510 391 Adelphia Corp.
27364 381 357 Armstrong Cable Services
6198 546 351 BellSouth Network Solutions,
22909 328 311 Comcast Cable Corporation
5668 320 304 Century Telephone
22773 330 301 Cox Communications, Inc. Atla
4355 390 289 EarthLink, Inc.
1239 944 284 Sprint
6140 350 281 ImpSat
9443 344 265 Primus Telecommunications
1221 904 254 Telstra Pty Ltd
6347 331 254 SAVVIS Communications Corpora
17676 292 254 XTAGE CORPORATION
20115 579 247 Charter Communications
376 357 243 Reseau Interordinateurs Scien
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
64512 PRIVATE 131.95.1.240/28 16430 University of Southe
64198 RESERVED 192.107.195.0/24 22767 NASA Earth Science D
1877 UNALLOCATED 192.108.199.0/24 1876 Southern Methodist U
64198 RESERVED 198.10.49.0/24 22767 NASA Earth Science D
64512 PRIVATE 204.70.1.0/24 3561 Cable & Wireless USA
23861 UNALLOCATED 210.93.46.0/24 4766 Korea Internet Excha
23861 UNALLOCATED 210.93.47.0/24 4766 Korea Internet Excha
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
132.0.0.0/10 568 DISO-UNRRA
137.0.0.0/13 568 DISO-UNRRA
158.0.0.0/13 568 DISO-UNRRA
192.43.230.0/24 4738 South Australian Academic Res
192.44.0.0/19 702 UUNET - Commercial IP service
192.83.16.0/20 5515 Sonera Solution Autonomous Sy
192.83.32.0/19 5515 Sonera Solution Autonomous Sy
192.83.96.0/22 5515 Sonera Solution Autonomous Sy
192.83.100.0/24 5515 Sonera Solution Autonomous Sy
192.84.205.0/24 719 LANLINK autonomous system
192.119.135.0/24 270 NASA
192.135.50.0/24 7018 AT&T
192.136.79.0/24 719 LANLINK autonomous system
192.172.0.0/19 568 DISO-UNRRA
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:19 /9:4 /10:6 /11:15 /12:57
/13:104 /14:279 /15:497 /16:7536 /17:1841 /18:3429
/19:8876 /20:9319 /21:6716 /22:9432 /23:11054 /24:71643
/25:183 /26:239 /27:141 /28:32 /29:6 /30:47
/31:0 /32:11
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 729 745 Covad Communications
6197 620 776 BellSouth Network Solutions,
7018 526 1410 AT&T
701 422 1400 UUNET Technologies, Inc.
702 421 692 UUNET - Commercial IP service
6198 402 546 BellSouth Network Solutions,
7066 396 502 Virginia Polytechnic Institut
27364 375 381 Armstrong Cable Services
3356 370 727 Level 3 Communications, LLC
690 361 398 Merit Network
20115 360 579 Charter Communications
1239 331 944 Sprint
5668 283 320 Century Telephone
19029 263 403 New Edge Networks
25844 244 244 Skadden, Arps, Slate, Meagher
4766 231 403 Korea Internet Exchange for "
3320 230 283 Deutsche Telekom AG
6386 223 249 bellsouth.net, inc.
6517 216 240 Yipes Communications, Inc.
4355 215 390 EarthLink, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:1 12:767 13:1 15:6 16:1 17:3
20:7 24:882 32:81 38:44 40:26 44:2
55:1 56:1 57:12 61:340 62:440 63:1823
64:1799 65:1813 66:2138 67:258 68:657 69:366
80:451 81:185 82:65 128:142 129:262 130:69
131:78 132:17 134:176 135:16 136:129 137:115
138:127 139:39 140:158 141:132 142:102 143:46
144:86 145:39 146:289 147:74 148:319 149:85
150:119 151:61 152:210 153:59 154:1 155:130
156:61 157:55 158:134 159:143 160:46 161:51
162:369 163:67 164:330 165:166 166:104 167:213
168:176 169:96 170:302 171:7 192:5521 193:2514
194:2001 195:1298 196:516 198:3630 199:2832 200:2949
201:5 202:4312 203:5369 204:3025 205:2029 206:2255
207:2587 208:2445 209:2894 210:976 211:415 212:896
213:975 214:23 215:25 216:3407 217:799 218:118
219:82 220:155 221:19 222:1
End of report
