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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 20 Apr, 2004
Analysis Summary
----------------
BGP routing table entries examined: 136847
Prefixes after maximum aggregation: 83098
Unique aggregates announced to Internet: 66220
Total ASes present in the Internet Routing Table: 17061
Origin-only ASes present in the Internet Routing Table: 14790
Origin ASes announcing only one prefix: 6831
Transit ASes present in the Internet Routing Table: 2271
Transit-only ASes present in the Internet Routing Table: 84
Average AS path length visible in the Internet Routing Table: 4.7
Max AS path length visible: 22
Illegal AS announcements present in the Routing Table: 4
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 17
Number of addresses announced to Internet: 1281049344
Equivalent to 76 /8s, 91 /16s and 67 /24s
Percentage of available address space announced: 34.6
Percentage of allocated address space announced: 57.6
Percentage of available address space allocated: 60.0
Total number of prefixes smaller than registry allocations: 61371
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 26014
Total APNIC prefixes after maximum aggregation: 13646
Prefixes being announced from the APNIC address blocks: 24326
Unique aggregates announced from the APNIC address blocks: 13600
APNIC Region origin ASes present in the Internet Routing Table: 2046
APNIC Region origin ASes announcing only one prefix: 610
APNIC Region transit ASes present in the Internet Routing Table: 328
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 143779968
Equivalent to 8 /8s, 145 /16s and 232 /24s
Percentage of available APNIC address space announced: 77.5
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: 78907
Total ARIN prefixes after maximum aggregation: 48687
Prefixes being announced from the ARIN address blocks: 60897
Unique aggregates announced from the ARIN address blocks: 21446
ARIN Region origin ASes present in the Internet Routing Table: 9104
ARIN Region origin ASes announcing only one prefix: 3227
ARIN Region transit ASes present in the Internet Routing Table: 893
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 221894944
Equivalent to 13 /8s, 57 /16s and 217 /24s
Percentage of available ARIN address space announced: 73.5
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, 70/8, 198/7, 204/6, 208/7
and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 24979
Total RIPE prefixes after maximum aggregation: 17888
Prefixes being announced from the RIPE address blocks: 21796
Unique aggregates announced from the RIPE address blocks: 14381
RIPE Region origin ASes present in the Internet Routing Table: 5365
RIPE Region origin ASes announcing only one prefix: 2869
RIPE Region transit ASes present in the Internet Routing Table: 930
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 22
Number of RIPE addresses announced to Internet: 159537920
Equivalent to 9 /8s, 130 /16s and 91 /24s
Percentage of available RIPE address space announced: 55.9
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, 80/5, 88/8, 188/8, 193/8, 194/7,
212/7 and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 5799
Total LACNIC prefixes after maximum aggregation: 2202
Prefixes being announced from the LACNIC address blocks: 5436
Unique aggregates announced from the LACNIC address blocks: 3402
LACNIC Region origin ASes present in the Internet Routing Table: 371
LACNIC Region origin ASes announcing only one prefix: 102
LACNIC Region transit ASes present in the Internet Routing Table: 72
Average LACNIC Region AS path length visible: 5.0
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 14553600
Equivalent to 0 /8s, 222 /16s and 18 /24s
Percentage of available LACNIC address space announced: 43.4
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1146
Total AfriNIC prefixes after maximum aggregation: 675
Prefixes being announced from the AfriNIC address blocks: 751
Unique aggregates announced from the AfriNIC address blocks: 562
AfriNIC Region origin ASes present in the Internet Routing Table: 91
AfriNIC Region origin ASes announcing only one prefix: 23
AfriNIC Region transit ASes present in the Internet Routing Table: 11
Average AfriNIC Region AS path length visible: 4.9
Max AfriNIC Region AS path length visible: 16
Number of AfriNIC addresses announced to Internet: 1832448
Equivalent to 0 /8s, 27 /16s and 246 /24s
Percentage of available AfriNIC address space announced: 10.9
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 861 1091 627 Telstra Pty Ltd
4134 717 3143 120 Data Communications Bureau
4766 472 2916 251 Korea Internet Exchange for "
9583 436 39 96 Satyam Infoway Ltd.,
4755 359 129 53 Videsh Sanchar Nigam Ltd. Aut
2907 356 1862 332 SINET Japan
9443 353 69 78 Primus Telecommunications
9929 347 155 31 China Netcom Corp.
703 337 374 259 UUNET
17676 330 4908 50 XTAGE CORPORATION
17557 322 23 164 Pakistan Telecom
2764 293 273 239 connect.com.au pty ltd
7474 272 300 216 Optus Communications Pty Ltd
9942 222 71 126 COMindico Australia
9800 217 348 58 CHINA UNICOM
4780 212 193 26 Digital United Inc.
9498 203 31 44 BHARTI BT INTERNET LTD.
4837 174 1571 102 chinanet IDC center beijing n
9304 169 159 24 Hutchison Telecom (HK)
7633 159 23 43 Software Technology Parks of
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1418 6964 994 AT&T
701 1314 8554 942 UUNET Technologies, Inc.
1239 939 3033 637 Sprint
3356 895 10968 690 Level 3 Communications, LLC
209 758 3493 518 Qwest
4323 724 559 198 Time Warner Communications, I
18566 699 192 8 Covad Communications
6197 690 506 252 BellSouth Network Solutions,
20115 595 349 306 Charter Communications
6198 565 364 205 BellSouth Network Solutions,
7843 533 620 109 Adelphia Corp.
852 513 1127 404 Telus Advanced Communications
7066 499 208 274 Virginia Polytechnic Institut
7132 452 7847 334 Southwestern Bell Internet Se
2386 433 579 235 AT&T Data Communications Serv
27364 405 29 23 Armstrong Cable Services
4355 393 323 103 EarthLink, Inc.
22909 383 839 23 Comcast Cable Corporation
376 381 343 112 Reseau Interordinateurs Scien
6347 377 386 85 SAVVIS Communications Corpora
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 663 2039 554 UUNET - Commercial IP service
3320 293 2477 235 Deutsche Telekom AG
3301 267 984 258 TeliaNet Sweden
8220 264 412 252 COLT Internet - International
680 245 2027 240 DFN-IP service G-WiN
1257 233 510 195 SWIPnet Swedish IP Network
13083 216 51 8 Mannesmann Datenverarbeitung
719 200 288 103 LANLINK autonomous system
3246 197 451 194 Song Networks
5515 197 778 140 Sonera Solution Autonomous Sy
786 175 1826 175 The JANET IP Service
8708 173 111 162 Romania Data Systems S.A.
3215 167 815 71 France Telecom Transpac
25186 163 187 105 France Telecom Transpac's Tra
5400 157 241 140 BT Ignite European Backbone
6746 137 28 115 Dynamic Network Technologies,
3303 135 618 135 Swisscom Ltd
3269 134 1101 65 TELECOM ITALIA
12302 121 17 28 MobiFon S.A.
1273 111 166 88 Cable & Wireless Deutschland
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 379 122 69 ImpSat
8151 265 357 130 UniNet S.A. de C.V.
11172 208 75 43 Servicios Alestra S.A de C.V
16814 163 11 6 NSS, S.A.
6147 145 78 20 Telefonica Del Peru
7303 141 53 26 Telecom Argentina Stet-France
6503 137 220 93 AVANTEL, S.A.
6505 130 90 91 Global One Communicaoes Ltda
11992 90 9 29 Integrated Systems
11556 88 73 25 Cable-Wireless Panama
6535 79 5 19 Chilesat Servicios Empresari
14420 76 5 32 ANDINATEL S.A.
15311 75 18 38 Telefonica Empresas
4270 71 18 9 Red de Interconexion Universi
14535 70 6 5 Techtel S.A.
11311 69 7 16 Sinectis S.A.
14259 69 4 5 GTD Internet S.A.
5639 64 7 13 Telecommunications Services o
7080 64 4 1 Electronica y Comunicaciones
10292 63 6 25 TELECOMMUNICATIONS OF JAMAICA
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 254 632 219 The Internet Solution
5536 106 8 3 Internet Egypt Network
2018 94 297 92 Tertiary Education Network
2905 89 272 79 The Internetworking Company o
11845 36 9 11 Data Pro Business Online
9129 32 3 4 UUNET Kenya
24835 31 18 6 RAYA Telecom - Egypt
5713 26 125 24 Telkom SA Ltd
16637 25 9 18 Johnnic e-Ventures
12455 24 4 2 Jambonet Autonomous system
8524 23 2 4 AUCEGYPT Autonomous System
6713 22 38 9 Itissalat Al-MAGHRIB
14988 22 16 1 Botswana Telecommunications C
10798 18 1 12 Standard Bank of South Africa
15706 16 2 3 Sudatel Internet Exchange Aut
12258 15 3 10 Vodacom Internet Company
15808 14 1 6 Communication Solutions Ltd i
8346 13 6 12 SONATEL-AS Autonomous System
17148 13 1 7 First National Bank
2609 12 26 4 Tunisia BackBone AS
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 699 691 Covad Communications
4134 717 597 Data Communications Bureau
4323 724 526 Time Warner Communications, I
6197 690 438 BellSouth Network Solutions,
7843 533 424 Adelphia Corp.
27364 405 382 Armstrong Cable Services
701 1314 372 UUNET Technologies, Inc.
6198 565 360 BellSouth Network Solutions,
22909 383 360 Comcast Cable Corporation
5668 365 349 Century Telephone
9583 436 340 Satyam Infoway Ltd.,
22773 359 323 Cox Communications, Inc. Atla
9929 347 316 China Netcom Corp.
6140 379 310 ImpSat
4755 359 306 Videsh Sanchar Nigam Ltd. Aut
1239 939 302 Sprint
6347 377 292 SAVVIS Communications Corpora
4355 393 290 EarthLink, Inc.
20115 595 289 Charter Communications
17676 330 280 XTAGE CORPORATION
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
18416 UNALLOCATED 61.56.96.0/20 9919 New Century InfoComm
1877 UNALLOCATED 192.108.199.0/24 1876 Southern Methodist U
18412 UNALLOCATED 211.77.0.0/19 9674 Far EastTone Telecom
65500 PRIVATE 213.190.3.0/24 12769 Iber-X
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
132.0.0.0/10 568 DISO-UNRRA
137.0.0.0/13 568 DISO-UNRRA
156.154.16.0/22 7786 Lockheed Martin IMS
158.0.0.0/13 568 DISO-UNRRA
164.234.0.0/18 721 DLA Systems Automation Center
164.234.0.0/16 721 DLA Systems Automation Center
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 /8:18 /9:3 /10:6 /11:15 /12:58
/13:112 /14:293 /15:508 /16:7702 /17:1984 /18:3549
/19:9300 /20:9689 /21:7025 /22:9929 /23:11412 /24:74559
/25:200 /26:250 /27:142 /28:29 /29:4 /30:48
/31:0 /32:12
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 682 699 Covad Communications
7018 528 1418 AT&T
6197 527 690 BellSouth Network Solutions,
3356 495 895 Level 3 Communications, LLC
6198 407 565 BellSouth Network Solutions,
702 401 663 UUNET - Commercial IP service
27364 398 405 Armstrong Cable Services
7066 393 499 Virginia Polytechnic Institut
701 366 1314 UUNET Technologies, Inc.
1239 354 939 Sprint
20115 346 595 Charter Communications
690 335 372 Merit Network
5668 319 365 Century Telephone
4766 292 472 Korea Internet Exchange for "
9583 277 436 Satyam Infoway Ltd.,
9929 276 347 China Netcom Corp.
14824 250 275 NewSouth Communications Corp.
25844 244 244 Skadden, Arps, Slate, Meagher
19029 243 370 New Edge Networks
3320 240 293 Deutsche Telekom AG
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 12:824 13:1 15:4 16:1 17:3
20:8 24:810 32:82 38:60 40:54 44:3
55:1 56:4 57:13 61:388 62:458 63:1818
64:1906 65:1942 66:2521 67:297 68:552 69:487
80:506 81:267 82:153 83:30 128:148 129:252
130:101 131:78 132:17 134:182 135:17 136:187
137:106 138:150 139:38 140:150 141:133 142:108
143:47 144:92 145:40 146:298 147:77 148:367
149:92 150:92 151:63 152:207 153:62 154:1
155:130 156:59 157:54 158:145 159:159 160:51
161:53 162:377 163:77 164:321 165:163 166:98
167:209 168:215 169:102 170:289 171:8 192:5530
193:2647 194:2019 195:1340 196:534 198:3663 199:3004
200:3265 201:8 202:4544 203:5479 204:2985 205:1982
206:2262 207:2554 208:2316 209:2850 210:1360 211:522
212:946 213:1136 214:29 215:27 216:3337 217:893
218:165 219:95 220:206 221:28 222:22
End of report
