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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sat 26 Apr, 2003
Analysis Summary
----------------
BGP routing table entries examined: 125077
Prefixes after maximum aggregation: 78329
Unique aggregates announced to Internet: 59140
Total ASes present in the Internet Routing Table: 15082
Origin-only ASes present in the Internet Routing Table: 13086
Origin ASes announcing only one prefix: 5928
Transit ASes present in the Internet Routing Table: 1996
Transit-only ASes present in the Internet Routing Table: 73
Average AS path length visible in the Internet Routing Table: 4.8
Max AS path length visible: 255
Illegal AS announcements present in the Routing Table: 1
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 20
Number of addresses announced to Internet: 1225482784
Equivalent to 73 /8s, 11 /16s and 98 /24s
Percentage of available address space announced: 33.1
Percentage of allocated address space announced: 59.1
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 54296
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21090
Total APNIC prefixes after maximum aggregation: 12268
Prefixes being announced from the APNIC address blocks: 19550
Unique aggregates announced from the APNIC address blocks: 11960
APNIC Region origin ASes present in the Internet Routing Table: 1782
APNIC Region origin ASes announcing only one prefix: 521
APNIC Region transit ASes present in the Internet Routing Table: 299
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 110634976
Equivalent to 6 /8s, 152 /16s and 39 /24s
Percentage of available APNIC address space announced: 59.6
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: 77167
Total ARIN prefixes after maximum aggregation: 48056
Prefixes being announced from the ARIN address blocks: 55249
Unique aggregates announced from the ARIN address blocks: 16551
ARIN Region origin ASes present in the Internet Routing Table: 8355
ARIN Region origin ASes announcing only one prefix: 2856
ARIN Region transit ASes present in the Internet Routing Table: 793
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 191210496
Equivalent to 11 /8s, 101 /16s and 164 /24s
Percentage of available ARIN address space announced: 71.2
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
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 199/8, 204/6, 208/7
and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 21489
Total RIPE prefixes after maximum aggregation: 15776
Prefixes being announced from the RIPE address blocks: 18040
Unique aggregates announced from the RIPE address blocks: 12048
RIPE Region origin ASes present in the Internet Routing Table: 4537
RIPE Region origin ASes announcing only one prefix: 2464
RIPE Region transit ASes present in the Internet Routing Table: 805
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 129276800
Equivalent to 7 /8s, 180 /16s and 155 /24s
Percentage of available RIPE address space announced: 70.0
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
RIPE Address Blocks 62/8, 80/7, 82/8, 188/8, 193/8, 194/7,
212/7 and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 5330
Total LACNIC prefixes after maximum aggregation: 2229
Prefixes being announced from the LACNIC address blocks: 4740
Unique aggregates announced from the LACNIC address blocks: 2931
LACNIC Region origin ASes present in the Internet Routing Table: 334
LACNIC Region origin ASes announcing only one prefix: 87
LACNIC Region transit ASes present in the Internet Routing Table: 68
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12485376
Equivalent to 0 /8s, 190 /16s and 131 /24s
Percentage of available LACNIC address space announced: 37.2
LACNIC AS Blocks 26592 - 26623, 27648 - 28671
LACNIC Address Blocks 200/7
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 1101 1104 789 Telstra Pty Ltd
4755 411 136 74 Videsh Sanchar Nigam Ltd. Aut
703 398 383 312 UUNET
2907 384 1960 361 SINET Japan
17557 371 27 142 Pakistan Telecom
2764 322 341 290 connect.com.au pty ltd
4814 294 85 22 China Telecom (Group)
7474 270 276 206 Optus Communications Pty Ltd
17676 244 3766 22 XTAGE CORPORATION
3786 242 773 209 DACOM Corporation
4134 224 2014 114 Data Communications Bureau
9583 222 33 14 Satyam Infoway Ltd.,
4766 214 2078 160 Korea Internet Exchange for "
9443 179 58 78 Primus Telecommunications
9800 177 250 55 CHINA UNICOM
9238 139 8 17 TATA ISP
4739 130 57 119 Commerical Internet eXchange
9498 129 9 12 BHARTI BT INTERNET LTD.
4716 126 729 120 TTnet
9768 126 384 64 Korea Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1580 8923 1113 UUNET Technologies, Inc.
7018 1335 7159 926 AT&T
1239 960 3111 678 Sprint
7132 959 6476 209 Southwestern Bell Internet Se
4151 927 691 60 USDA
3908 919 1570 471 Supernet, Inc.
1 732 2733 464 GENUITY
7843 730 408 188 Adelphia Corp.
189 704 341 289 Genuity
4323 576 514 169 Time Warner Communications, I
852 547 1110 430 Telus Advanced Communications
18566 546 144 5 Covad Communications
2386 536 485 269 AT&T Data Communications Serv
705 529 278 234 UUNET Technologies, Inc.
3561 513 2357 335 Cable & Wireless USA
209 492 2120 293 Qwest
690 491 72 309 Merit Network
7066 483 204 257 Virginia Polytechnic Institut
6197 479 340 196 BellSouth Network Solutions,
20115 475 189 295 Charter Communications
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 773 2186 643 UUNET - Commercial IP service
3301 309 1173 299 TeliaNet Sweden
3215 303 851 175 France Telecom Transpac
3320 265 2004 225 Deutsche Telekom AG
680 231 2051 228 DFN-IP service G-WiN
1257 227 327 189 SWIPnet Swedish IP Network
5400 204 112 114 BT Ignite European Backbone
8220 199 364 188 COLT Internet - International
719 197 307 125 LANLINK autonomous system
5515 196 779 168 Sonera Solution Autonomous Sy
786 179 1858 179 The JANET IP Service
20858 164 17 3 This AS will be used to conne
8708 155 44 151 Romania Data Systems S.A.
3303 141 517 140 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
2856 120 1298 110 BTnet UK Regional network
3269 112 755 63 TELECOM ITALIA
3246 109 383 106 Song Networks
3352 108 750 31 Ibernet, Internet Access Netw
2874 96 85 39 Global One Services AB
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 294 99 105 ImpSat
7303 254 36 67 Telecom Argentina Stet-France
8151 216 334 118 UniNet S.A. de C.V.
11172 161 65 32 Servicios Alestra S.A de C.V
6503 154 207 108 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
10620 113 7 33 TVCABLE BOGOTA
6147 91 62 20 Telefonica Del Peru
11992 89 8 37 Integrated Systems
11340 82 2 26 Red Universitaria Nacional
1916 75 306 45 Fundacao de Amparo a Pesquisa
13999 74 36 8 Mega Cable S.A. de C.V.
6535 73 5 22 Chilesat Servicios Empresari
8065 72 7 15 Empresas Publicas de Medellin
15311 72 28 36 Telefonica Empresas
11830 66 4 26 Instituto Costarricense de El
4270 65 18 9 Red de Interconexion Universi
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
7984 61 11 41 Global One Colombia
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4151 927 867 USDA
7132 959 750 Southwestern Bell Internet Se
7843 730 542 Adelphia Corp.
18566 546 541 Covad Communications
3908 919 448 Supernet, Inc.
189 704 415 Genuity
7018 1335 409 AT&T
4323 576 407 Time Warner Communications, I
4755 411 337 Videsh Sanchar Nigam Ltd. Aut
1221 1101 312 Telstra Pty Ltd
705 529 295 UUNET Technologies, Inc.
6347 371 292 SAVVIS Communications Corpora
6198 459 284 BellSouth Network Solutions,
22927 297 284 TELEFONICA DE ARGENTINA
6197 479 283 BellSouth Network Solutions,
1239 960 282 Sprint
4355 386 278 EarthLink, Inc.
4814 294 272 China Telecom (Group)
1 732 268 GENUITY
2386 536 267 AT&T Data Communications Serv
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
1877 UNALLOCATED 192.108.199.0/24 1880 Stupi, house man's p
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
132.0.0.0/10 568 DISO-UNRRA
135.0.0.0/13 10455 Lucent Technologies
137.0.0.0/13 568 DISO-UNRRA
158.0.0.0/13 568 DISO-UNRRA
192.16.52.0/24 1239 Sprint
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
192.119.135.0/24 270 NASA
192.135.50.0/24 7018 AT&T
192.136.79.0/24 719 LANLINK autonomous system
192.136.135.0/24 1239 Sprint
192.153.136.0/21 568 DISO-UNRRA
192.158.254.0/24 705 UUNET Technologies, Inc.
192.172.0.0/19 568 DISO-UNRRA
192.243.36.0/23 2044 AUSNet, Inc.
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:18 /9:7 /10:8 /11:13 /12:50
/13:93 /14:251 /15:463 /16:7387 /17:1669 /18:2965
/19:8367 /20:8349 /21:6024 /22:8938 /23:10540 /24:69472
/25:137 /26:186 /27:53 /28:25 /29:13 /30:24
/31:0 /32:25
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 625 704 Genuity
3908 575 919 Supernet, Inc.
18566 540 546 Covad Communications
702 480 773 UUNET - Commercial IP service
7843 472 730 Adelphia Corp.
7018 461 1335 AT&T
690 440 491 Merit Network
701 430 1580 UUNET Technologies, Inc.
7066 382 483 Virginia Polytechnic Institut
6198 362 459 BellSouth Network Solutions,
1239 357 960 Sprint
6197 357 479 BellSouth Network Solutions,
20115 341 475 Charter Communications
2386 330 536 AT&T Data Communications Serv
11305 311 334 Interland Incorporated
4814 281 294 China Telecom (Group)
27364 263 270 Armstrong Cable Services
1 258 732 GENUITY
22927 235 297 TELEFONICA DE ARGENTINA
3215 226 303 France Telecom Transpac
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:687 13:1 15:4 17:3 20:8 24:825
25:1 32:94 38:61 40:18 44:2 55:1
57:16 61:436 62:535 63:1902 64:1557 65:1928
66:2392 67:169 68:359 69:117 80:351 81:146
128:157 129:178 130:45 131:82 132:11 133:2
134:154 135:4 136:113 137:109 138:108 139:66
140:147 141:106 142:94 143:44 144:101 145:15
146:270 147:94 148:278 149:72 150:43 151:68
152:245 153:57 154:2 155:108 156:46 157:40
158:124 159:144 160:37 161:74 162:142 163:78
164:310 165:140 166:84 167:331 168:406 169:57
170:319 171:7 192:5352 193:2411 194:1989 195:1006
196:464 198:3563 199:3606 200:2950 202:3746 203:5186
204:3074 205:2007 206:2422 207:2401 208:2650 209:2842
210:775 211:311 212:957 213:802 214:21 215:21
216:3363 217:625 218:90 219:21 220:92
End of report
