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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sun 20 Apr, 2003
Analysis Summary
----------------
BGP routing table entries examined: 124170
Prefixes after maximum aggregation: 78110
Unique aggregates announced to Internet: 58833
Total ASes present in the Internet Routing Table: 15021
Origin-only ASes present in the Internet Routing Table: 13029
Origin ASes announcing only one prefix: 5907
Transit ASes present in the Internet Routing Table: 1992
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: 3
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 20
Number of addresses announced to Internet: 1224349056
Equivalent to 72 /8s, 250 /16s and 21 /24s
Percentage of available address space announced: 33.0
Percentage of allocated address space announced: 59.0
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 53971
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 20831
Total APNIC prefixes after maximum aggregation: 12244
Prefixes being announced from the APNIC address blocks: 19263
Unique aggregates announced from the APNIC address blocks: 11877
APNIC Region origin ASes present in the Internet Routing Table: 1770
APNIC Region origin ASes announcing only one prefix: 519
APNIC Region transit ASes present in the Internet Routing Table: 291
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 110380512
Equivalent to 6 /8s, 148 /16s and 69 /24s
Percentage of available APNIC address space announced: 59.5
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: 76712
Total ARIN prefixes after maximum aggregation: 47904
Prefixes being announced from the ARIN address blocks: 54883
Unique aggregates announced from the ARIN address blocks: 16348
ARIN Region origin ASes present in the Internet Routing Table: 8334
ARIN Region origin ASes announcing only one prefix: 2846
ARIN Region transit ASes present in the Internet Routing Table: 791
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 190836736
Equivalent to 11 /8s, 95 /16s and 240 /24s
Percentage of available ARIN address space announced: 71.1
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: 21378
Total RIPE prefixes after maximum aggregation: 15740
Prefixes being announced from the RIPE address blocks: 17936
Unique aggregates announced from the RIPE address blocks: 12026
RIPE Region origin ASes present in the Internet Routing Table: 4511
RIPE Region origin ASes announcing only one prefix: 2454
RIPE Region transit ASes present in the Internet Routing Table: 811
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 16
Number of RIPE addresses announced to Internet: 129085568
Equivalent to 7 /8s, 177 /16s and 176 /24s
Percentage of available RIPE address space announced: 69.9
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
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: 5247
Total LACNIC prefixes after maximum aggregation: 2222
Prefixes being announced from the LACNIC address blocks: 4698
Unique aggregates announced from the LACNIC address blocks: 2966
LACNIC Region origin ASes present in the Internet Routing Table: 333
LACNIC Region origin ASes announcing only one prefix: 88
LACNIC Region transit ASes present in the Internet Routing Table: 69
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 12430592
Equivalent to 0 /8s, 189 /16s and 173 /24s
Percentage of available LACNIC address space announced: 37.0
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 1102 1104 792 Telstra Pty Ltd
703 393 381 307 UUNET
2907 385 1992 362 SINET Japan
17557 372 27 138 Pakistan Telecom
2764 322 341 290 connect.com.au pty ltd
4814 274 80 16 China Telecom (Group)
7474 272 276 208 Optus Communications Pty Ltd
3786 243 773 210 DACOM Corporation
17676 243 3750 22 XTAGE CORPORATION
4755 229 135 73 Videsh Sanchar Nigam Ltd. Aut
4134 225 2006 114 Data Communications Bureau
9583 220 33 14 Satyam Infoway Ltd.,
4766 212 2078 157 Korea Internet Exchange for "
9443 180 58 79 Primus Telecommunications
9800 175 244 53 CHINA UNICOM
9238 140 8 17 TATA ISP
4739 130 57 119 Commerical Internet eXchange
4716 128 731 122 TTnet
9498 126 9 10 BHARTI BT INTERNET LTD.
9768 126 384 64 Korea Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1583 8908 1106 UUNET Technologies, Inc.
7018 1366 7175 945 AT&T
1239 967 3119 682 Sprint
7132 959 6476 209 Southwestern Bell Internet Se
3908 939 1571 479 Supernet, Inc.
4151 817 691 60 USDA
1 737 2753 470 GENUITY
189 705 341 290 Genuity
7843 684 402 178 Adelphia Corp.
4323 573 514 169 Time Warner Communications, I
852 549 1110 430 Telus Advanced Communications
18566 541 128 6 Covad Communications
705 529 278 234 UUNET Technologies, Inc.
3561 509 2341 333 Cable & Wireless USA
2386 508 482 271 AT&T Data Communications Serv
209 496 2120 299 Qwest
690 494 72 312 Merit Network
7066 485 204 255 Virginia Polytechnic Institut
6197 481 340 196 BellSouth Network Solutions,
6198 457 226 175 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 771 2186 643 UUNET - Commercial IP service
3215 312 851 175 France Telecom Transpac
3301 307 1173 297 TeliaNet Sweden
3320 264 2004 225 Deutsche Telekom AG
680 231 2051 228 DFN-IP service G-WiN
1257 216 327 190 SWIPnet Swedish IP Network
5400 200 98 111 BT Ignite European Backbone
8220 198 364 187 COLT Internet - International
719 197 307 125 LANLINK autonomous system
5515 195 763 167 Sonera Solution Autonomous Sy
786 180 1874 180 The JANET IP Service
20858 164 17 3 This AS will be used to conne
8708 157 44 152 Romania Data Systems S.A.
3303 142 517 141 Swisscom Ltd
12302 126 18 33 MobiFon S.A.
2856 120 1298 110 BTnet UK Regional network
3269 112 755 63 TELECOM ITALIA
3246 109 383 106 Song Networks
3352 106 734 32 Ibernet, Internet Access Netw
3233 105 11 12 RNC - Romanian Natioanal R&D
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 294 99 105 ImpSat
7303 247 36 65 Telecom Argentina Stet-France
8151 216 334 118 UniNet S.A. de C.V.
11172 163 66 33 Servicios Alestra S.A de C.V
6503 152 207 106 AVANTEL, S.A.
16814 139 9 18 NSS, S.A.
10620 113 7 33 TVCABLE BOGOTA
11340 106 3 34 Red Universitaria Nacional
6147 90 62 20 Telefonica Del Peru
11992 89 8 37 Integrated Systems
8065 76 6 15 Empresas Publicas de Medellin
1916 75 306 45 Fundacao de Amparo a Pesquisa
6535 74 5 19 Chilesat Servicios Empresari
13999 74 36 8 Mega Cable S.A. de C.V.
15311 72 28 36 Telefonica Empresas
11830 66 4 26 Instituto Costarricense de El
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
7984 63 11 42 Global One Colombia
15034 61 5 33 TIBA SA
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4151 817 757 USDA
7132 959 750 Southwestern Bell Internet Se
18566 541 535 Covad Communications
7843 684 506 Adelphia Corp.
3908 939 460 Supernet, Inc.
7018 1366 421 AT&T
189 705 415 Genuity
4323 573 404 Time Warner Communications, I
1221 1102 310 Telstra Pty Ltd
705 529 295 UUNET Technologies, Inc.
6347 367 288 SAVVIS Communications Corpora
1239 967 285 Sprint
6197 481 285 BellSouth Network Solutions,
6198 457 282 BellSouth Network Solutions,
22927 296 282 TELEFONICA DE ARGENTINA
4355 384 275 EarthLink, Inc.
1 737 267 GENUITY
4814 274 258 China Telecom (Group)
27364 270 252 Armstrong Cable Services
2386 508 237 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
1877 UNALLOCATED 192.108.201.0/24 1880 Stupi, house man's p
65501 PRIVATE 200.73.26.0/24 18747 IFX Communication Ve
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 /9:4 /10:8 /11:13 /12:50
/13:93 /14:252 /15:464 /16:7364 /17:1669 /18:2966
/19:8346 /20:8306 /21:5956 /22:8853 /23:10559 /24:68753
/25:162 /26:193 /27:51 /28:25 /29:13 /30:24
/31:0 /32:28
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 626 705 Genuity
3908 595 939 Supernet, Inc.
18566 535 541 Covad Communications
7018 482 1366 AT&T
702 478 771 UUNET - Commercial IP service
690 443 494 Merit Network
701 440 1583 UUNET Technologies, Inc.
7843 429 684 Adelphia Corp.
7066 384 485 Virginia Polytechnic Institut
1239 364 967 Sprint
6198 360 457 BellSouth Network Solutions,
6197 359 481 BellSouth Network Solutions,
11305 318 341 Interland Incorporated
2386 305 508 AT&T Data Communications Serv
20115 294 425 Charter Communications
4814 264 274 China Telecom (Group)
27364 263 270 Armstrong Cable Services
1 257 737 GENUITY
3215 235 312 France Telecom Transpac
22927 235 296 TELEFONICA DE ARGENTINA
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:679 13:1 15:4 17:3 20:9 24:816
25:1 32:85 38:65 40:19 44:2 55:1
57:16 61:428 62:525 63:1896 64:1529 65:1927
66:2368 67:166 68:359 69:111 80:334 81:121
128:155 129:177 130:45 131:82 132:11 133:2
134:153 135:4 136:112 137:111 138:108 139:66
140:147 141:92 142:95 143:44 144:113 145:14
146:270 147:93 148:276 149:72 150:44 151:68
152:246 153:57 154:2 155:106 156:45 157:40
158:124 159:144 160:37 161:75 162:137 163:77
164:313 165:134 166:85 167:329 168:404 169:57
170:313 171:7 192:5332 193:2425 194:1992 195:990
196:462 198:3549 199:3498 200:2926 202:3702 203:5064
204:3048 205:1972 206:2389 207:2369 208:2660 209:2817
210:748 211:338 212:985 213:790 214:21 215:21
216:3325 217:625 218:86 219:11 220:57
End of report
