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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sun 11 Jan, 2004
Analysis Summary
----------------
BGP routing table entries examined: 131421
Prefixes after maximum aggregation: 80892
Unique aggregates announced to Internet: 63347
Total ASes present in the Internet Routing Table: 16425
Origin-only ASes present in the Internet Routing Table: 14262
Origin ASes announcing only one prefix: 6553
Transit ASes present in the Internet Routing Table: 2163
Transit-only ASes present in the Internet Routing Table: 72
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: 6
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 14
Number of addresses announced to Internet: 1276784356
Equivalent to 76 /8s, 26 /16s and 46 /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: 57954
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 24239
Total APNIC prefixes after maximum aggregation: 13066
Prefixes being announced from the APNIC address blocks: 22725
Unique aggregates announced from the APNIC address blocks: 12897
APNIC Region origin ASes present in the Internet Routing Table: 1967
APNIC Region origin ASes announcing only one prefix: 580
APNIC Region transit ASes present in the Internet Routing Table: 310
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 133946240
Equivalent to 7 /8s, 251 /16s and 219 /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: 77264
Total ARIN prefixes after maximum aggregation: 47844
Prefixes being announced from the ARIN address blocks: 59805
Unique aggregates announced from the ARIN address blocks: 20806
ARIN Region origin ASes present in the Internet Routing Table: 8838
ARIN Region origin ASes announcing only one prefix: 3105
ARIN Region transit ASes present in the Internet Routing Table: 843
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 213935136
Equivalent to 12 /8s, 192 /16s and 100 /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: 23342
Total RIPE prefixes after maximum aggregation: 17119
Prefixes being announced from the RIPE address blocks: 20209
Unique aggregates announced from the RIPE address blocks: 13449
RIPE Region origin ASes present in the Internet Routing Table: 5092
RIPE Region origin ASes announcing only one prefix: 2735
RIPE Region transit ASes present in the Internet Routing Table: 891
Average RIPE Region AS path length visible: 5.6
Max RIPE Region AS path length visible: 30
Number of RIPE addresses announced to Internet: 148426624
Equivalent to 8 /8s, 216 /16s and 207 /24s
Percentage of available RIPE address space announced: 68.1
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: 5419
Total LACNIC prefixes after maximum aggregation: 2184
Prefixes being announced from the LACNIC address blocks: 4986
Unique aggregates announced from the LACNIC address blocks: 3125
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: 70
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 12
Number of LACNIC addresses announced to Internet: 13861632
Equivalent to 0 /8s, 211 /16s and 131 /24s
Percentage of available LACNIC address space announced: 41.3
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1153
Total AfriNIC prefixes after maximum aggregation: 679
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: 5.1
Max AfriNIC Region AS path length visible: 15
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 693 2413 110 Data Communications Bureau
4766 398 2903 238 Korea Internet Exchange for "
2907 362 1847 339 SINET Japan
9443 346 69 79 Primus Telecommunications
703 338 372 262 UUNET
17557 307 22 152 Pakistan Telecom
17676 292 4300 38 XTAGE CORPORATION
2764 286 289 235 connect.com.au pty ltd
7474 268 305 212 Optus Communications Pty Ltd
4538 250 1811 21 China Education and Research
4755 221 130 58 Videsh Sanchar Nigam Ltd. Aut
9942 217 69 128 COMindico Australia
9800 216 348 57 CHINA UNICOM
9583 211 44 12 Satyam Infoway Ltd.,
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 153 121 62 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 1408 7048 974 AT&T
701 1394 8692 962 UUNET Technologies, Inc.
1239 942 3088 659 Sprint
6197 776 483 251 BellSouth Network Solutions,
18566 743 176 8 Covad Communications
3356 728 10893 583 Level 3 Communications, LLC
209 722 3530 506 Qwest
4323 674 589 202 Time Warner Communications, I
20115 578 323 332 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 408 172 262 New Edge Networks
690 398 58 268 Merit Network
4355 390 323 101 EarthLink, Inc.
27364 381 28 24 Armstrong Cable Services
705 380 196 235 UUNET Technologies, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 692 2076 576 UUNET - Commercial IP service
3301 333 1159 315 TeliaNet Sweden
3320 281 1972 231 Deutsche Telekom AG
8220 267 412 252 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
786 174 1810 174 The JANET IP Service
5515 172 762 134 Sonera Solution Autonomous Sy
25186 168 201 109 France Telecom Transpac's Tra
8708 164 111 157 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 347 120 66 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 140 53 14 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 76 5 19 Chilesat Servicios Empresari
4270 71 18 9 Red de Interconexion Universi
11992 68 25 32 Integrated Systems
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 58 231 38 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
5713 24 93 22 Telkom SA Ltd
9129 24 3 4 UUNET Kenya
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 743 735 Covad Communications
4134 693 583 Data Communications Bureau
6197 776 525 BellSouth Network Solutions,
4323 674 472 Time Warner Communications, I
701 1394 432 UUNET Technologies, Inc.
7843 510 391 Adelphia Corp.
27364 381 357 Armstrong Cable Services
6198 546 351 BellSouth Network Solutions,
22909 327 310 Comcast Cable Corporation
5668 320 304 Century Telephone
22773 328 299 Cox Communications, Inc. Atla
4355 390 289 EarthLink, Inc.
1239 942 283 Sprint
6140 347 281 ImpSat
9443 346 267 Primus Telecommunications
1221 904 254 Telstra Pty Ltd
6347 331 254 SAVVIS Communications Corpora
17676 292 254 XTAGE CORPORATION
20115 578 246 Charter Communications
376 355 243 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
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 /16:7534 /17:1841 /18:3436
/19:8862 /20:9317 /21:6707 /22:9423 /23:11047 /24:71617
/25:180 /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 727 743 Covad Communications
6197 620 776 BellSouth Network Solutions,
7018 525 1408 AT&T
702 421 692 UUNET - Commercial IP service
701 420 1394 UUNET Technologies, Inc.
6198 402 546 BellSouth Network Solutions,
7066 396 502 Virginia Polytechnic Institut
27364 375 381 Armstrong Cable Services
3356 371 728 Level 3 Communications, LLC
690 361 398 Merit Network
20115 360 578 Charter Communications
1239 330 942 Sprint
5668 283 320 Century Telephone
19029 266 408 New Edge Networks
25844 244 244 Skadden, Arps, Slate, Meagher
3320 228 281 Deutsche Telekom AG
4766 227 398 Korea Internet Exchange for "
6386 223 248 bellsouth.net, inc.
6517 216 239 Yipes Communications, Inc.
4355 215 390 EarthLink, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 12:764 13:1 15:6 16:1 17:3
20:7 24:882 32:81 38:44 40:26 44:2
55:1 56:1 57:11 61:344 62:441 63:1824
64:1814 65:1812 66:2136 67:258 68:656 69:368
80:434 81:183 82:65 128:142 129:262 130:69
131:78 132:17 134:172 135:16 136:129 137:115
138:127 139:39 140:158 141:132 142:104 143:46
144:84 145:39 146:289 147:74 148:318 149:85
150:119 151:60 152:209 153:59 154:1 155:128
156:60 157:55 158:133 159:143 160:46 161:51
162:367 163:71 164:332 165:166 166:104 167:215
168:176 169:95 170:344 171:7 192:5521 193:2519
194:2001 195:1297 196:516 198:3618 199:2828 200:2942
201:5 202:4302 203:5361 204:3023 205:2027 206:2253
207:2582 208:2451 209:2892 210:973 211:414 212:896
213:978 214:23 215:24 216:3402 217:792 218:118
219:80 220:155 221:19 222:1
End of report
