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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 16 Apr, 2004
Analysis Summary
----------------
BGP routing table entries examined: 136664
Prefixes after maximum aggregation: 83006
Unique aggregates announced to Internet: 66071
Total ASes present in the Internet Routing Table: 17032
Origin-only ASes present in the Internet Routing Table: 14765
Origin ASes announcing only one prefix: 6826
Transit ASes present in the Internet Routing Table: 2267
Transit-only ASes present in the Internet Routing Table: 83
Average AS path length visible in the Internet Routing Table: 4.7
Max AS path length visible: 31
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: 1277893376
Equivalent to 76 /8s, 43 /16s and 27 /24s
Percentage of available address space announced: 34.5
Percentage of allocated address space announced: 57.4
Percentage of available address space allocated: 60.0
Total number of prefixes smaller than registry allocations: 61288
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 25930
Total APNIC prefixes after maximum aggregation: 13636
Prefixes being announced from the APNIC address blocks: 24258
Unique aggregates announced from the APNIC address blocks: 13557
APNIC Region origin ASes present in the Internet Routing Table: 2043
APNIC Region origin ASes announcing only one prefix: 609
APNIC Region transit ASes present in the Internet Routing Table: 327
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 141826688
Equivalent to 8 /8s, 116 /16s and 26 /24s
Percentage of available APNIC address space announced: 76.4
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: 78879
Total ARIN prefixes after maximum aggregation: 48627
Prefixes being announced from the ARIN address blocks: 60869
Unique aggregates announced from the ARIN address blocks: 21404
ARIN Region origin ASes present in the Internet Routing Table: 9096
ARIN Region origin ASes announcing only one prefix: 3227
ARIN Region transit ASes present in the Internet Routing Table: 897
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 221692448
Equivalent to 13 /8s, 54 /16s and 194 /24s
Percentage of available ARIN address space announced: 73.4
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
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: 24912
Total RIPE prefixes after maximum aggregation: 17866
Prefixes being announced from the RIPE address blocks: 21718
Unique aggregates announced from the RIPE address blocks: 14334
RIPE Region origin ASes present in the Internet Routing Table: 5348
RIPE Region origin ASes announcing only one prefix: 2866
RIPE Region transit ASes present in the Internet Routing Table: 924
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 31
Number of RIPE addresses announced to Internet: 158903296
Equivalent to 9 /8s, 120 /16s and 172 /24s
Percentage of available RIPE address space announced: 55.7
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, 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: 5804
Total LACNIC prefixes after maximum aggregation: 2204
Prefixes being announced from the LACNIC address blocks: 5471
Unique aggregates announced from the LACNIC address blocks: 3380
LACNIC Region origin ASes present in the Internet Routing Table: 370
LACNIC Region origin ASes announcing only one prefix: 101
LACNIC Region transit ASes present in the Internet Routing Table: 73
Average LACNIC Region AS path length visible: 5.0
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 14555648
Equivalent to 0 /8s, 222 /16s and 26 /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: 1138
Total AfriNIC prefixes after maximum aggregation: 673
Prefixes being announced from the AfriNIC address blocks: 752
Unique aggregates announced from the AfriNIC address blocks: 560
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: 1839872
Equivalent to 0 /8s, 28 /16s and 19 /24s
Percentage of available AfriNIC address space announced: 11.0
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 865 1092 630 Telstra Pty Ltd
4134 717 3050 117 Data Communications Bureau
4766 465 2916 251 Korea Internet Exchange for "
9583 435 39 104 Satyam Infoway Ltd.,
4755 371 129 53 Videsh Sanchar Nigam Ltd. Aut
2907 356 1862 332 SINET Japan
9443 353 69 78 Primus Telecommunications
9929 348 155 31 China Netcom Corp.
703 337 374 259 UUNET
17557 322 23 164 Pakistan Telecom
17676 308 4556 42 XTAGE CORPORATION
2764 294 273 240 connect.com.au pty ltd
7474 272 300 216 Optus Communications Pty Ltd
9942 222 71 127 COMindico Australia
9800 217 348 58 CHINA UNICOM
4780 212 193 26 Digital United Inc.
9498 197 31 44 BHARTI BT INTERNET LTD.
4837 171 1571 102 chinanet IDC center beijing n
9304 168 159 23 Hutchison Telecom (HK)
7633 160 23 43 Software Technology Parks of
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1433 6964 1000 AT&T
701 1321 8561 949 UUNET Technologies, Inc.
1239 935 3032 633 Sprint
3356 887 10959 686 Level 3 Communications, LLC
209 757 3477 517 Qwest
4323 713 559 198 Time Warner Communications, I
18566 698 192 8 Covad Communications
6197 685 458 270 BellSouth Network Solutions,
20115 596 349 310 Charter Communications
6198 564 364 204 BellSouth Network Solutions,
7843 533 616 108 Adelphia Corp.
852 513 1127 404 Telus Advanced Communications
7066 501 208 273 Virginia Polytechnic Institut
7132 450 7847 332 Southwestern Bell Internet Se
2386 434 579 236 AT&T Data Communications Serv
27364 404 29 23 Armstrong Cable Services
4355 396 323 103 EarthLink, Inc.
22909 382 839 23 Comcast Cable Corporation
376 378 343 112 Reseau Interordinateurs Scien
6347 376 386 84 SAVVIS Communications Corpora
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 665 2039 556 UUNET - Commercial IP service
3320 293 2477 235 Deutsche Telekom AG
3301 266 984 257 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 196 451 194 Song Networks
5515 193 762 139 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 155 225 140 BT Ignite European Backbone
6746 136 28 114 Dynamic Network Technologies,
3303 135 618 135 Swisscom Ltd
3269 134 1101 65 TELECOM ITALIA
12302 121 17 28 MobiFon S.A.
1273 114 167 90 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 207 75 43 Servicios Alestra S.A de C.V
16814 162 11 6 NSS, S.A.
6147 144 78 20 Telefonica Del Peru
7303 141 53 26 Telecom Argentina Stet-France
6503 138 220 93 AVANTEL, S.A.
6505 132 90 92 Global One Communicaoes Ltda
11992 89 9 29 Integrated Systems
11556 88 73 25 Cable-Wireless Panama
6535 79 5 19 Chilesat Servicios Empresari
15311 75 18 38 Telefonica Empresas
14420 74 5 30 ANDINATEL S.A.
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 33 3 4 UUNET Kenya
24835 31 18 6 RAYA Telecom - Egypt
16637 25 9 18 Johnnic e-Ventures
5713 24 93 22 Telkom SA Ltd
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 698 690 Covad Communications
4134 717 600 Data Communications Bureau
4323 713 515 Time Warner Communications, I
7843 533 425 Adelphia Corp.
6197 685 415 BellSouth Network Solutions,
27364 404 381 Armstrong Cable Services
701 1321 372 UUNET Technologies, Inc.
6198 564 360 BellSouth Network Solutions,
22909 382 359 Comcast Cable Corporation
5668 363 347 Century Telephone
9583 435 331 Satyam Infoway Ltd.,
22773 358 323 Cox Communications, Inc. Atla
4755 371 318 Videsh Sanchar Nigam Ltd. Aut
9929 348 317 China Netcom Corp.
6140 379 310 ImpSat
1239 935 302 Sprint
4355 396 293 EarthLink, Inc.
6347 376 292 SAVVIS Communications Corpora
20115 596 286 Charter Communications
9443 353 275 Primus Telecommunications
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
29975 UNALLOCATED 196.46.160.0/20 3741 The Internet Solutio
18412 UNALLOCATED 211.77.0.0/19 9674 Far EastTone Telecom
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
/13:110 /14:294 /15:512 /16:7665 /17:1961 /18:3535
/19:9278 /20:9674 /21:7013 /22:9894 /23:11420 /24:74520
/25:197 /26:252 /27:146 /28:29 /29:4 /30:48
/31:0 /32:12
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 681 698 Covad Communications
7018 531 1433 AT&T
6197 525 685 BellSouth Network Solutions,
3356 487 887 Level 3 Communications, LLC
6198 406 564 BellSouth Network Solutions,
702 403 665 UUNET - Commercial IP service
27364 397 404 Armstrong Cable Services
7066 395 501 Virginia Polytechnic Institut
701 366 1321 UUNET Technologies, Inc.
1239 355 935 Sprint
20115 347 596 Charter Communications
690 338 375 Merit Network
5668 317 363 Century Telephone
4766 287 465 Korea Internet Exchange for "
9583 277 435 Satyam Infoway Ltd.,
9929 277 348 China Netcom Corp.
14824 250 275 NewSouth Communications Corp.
25844 244 244 Skadden, Arps, Slate, Meagher
19029 242 369 New Edge Networks
3320 240 293 Deutsche Telekom AG
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:3 12:823 13:1 15:4 16:1 17:3
20:8 24:807 32:83 38:60 40:54 44:3
55:1 56:4 57:14 61:389 62:475 63:1820
64:1907 65:1937 66:2534 67:295 68:554 69:475
80:499 81:256 82:147 83:30 128:148 129:252
130:98 131:79 132:17 134:182 135:17 136:192
137:106 138:149 139:35 140:149 141:133 142:108
143:49 144:92 145:40 146:298 147:69 148:366
149:91 150:91 151:63 152:210 153:62 154:1
155:129 156:59 157:55 158:146 159:157 160:52
161:53 162:374 163:77 164:327 165:164 166:98
167:211 168:212 169:101 170:289 171:8 192:5510
193:2620 194:2016 195:1339 196:534 198:3648 199:2984
200:3285 201:8 202:4531 203:5499 204:2989 205:1974
206:2249 207:2605 208:2321 209:2850 210:1355 211:519
212:944 213:1122 214:26 215:26 216:3366 217:891
218:164 219:99 220:203 221:27 222:20
End of report
