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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 27 May, 2003
Analysis Summary
----------------
BGP routing table entries examined: 124973
Prefixes after maximum aggregation: 78774
Unique aggregates announced to Internet: 59172
Total ASes present in the Internet Routing Table: 15239
Origin-only ASes present in the Internet Routing Table: 13210
Origin ASes announcing only one prefix: 5967
Transit ASes present in the Internet Routing Table: 2029
Transit-only ASes present in the Internet Routing Table: 71
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: 6
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 18
Number of addresses announced to Internet: 1231181504
Equivalent to 73 /8s, 98 /16s and 86 /24s
Percentage of available address space announced: 33.2
Percentage of allocated address space announced: 59.4
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 54770
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21585
Total APNIC prefixes after maximum aggregation: 12492
Prefixes being announced from the APNIC address blocks: 19981
Unique aggregates announced from the APNIC address blocks: 12062
APNIC Region origin ASes present in the Internet Routing Table: 1808
APNIC Region origin ASes announcing only one prefix: 522
APNIC Region transit ASes present in the Internet Routing Table: 303
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 113489568
Equivalent to 6 /8s, 195 /16s and 182 /24s
Percentage of available APNIC address space announced: 61.1
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: 76370
Total ARIN prefixes after maximum aggregation: 48142
Prefixes being announced from the ARIN address blocks: 54600
Unique aggregates announced from the ARIN address blocks: 16481
ARIN Region origin ASes present in the Internet Routing Table: 8432
ARIN Region origin ASes announcing only one prefix: 2868
ARIN Region transit ASes present in the Internet Routing Table: 812
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 192190464
Equivalent to 11 /8s, 116 /16s and 152 /24s
Percentage of available ARIN address space announced: 71.6
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: 21659
Total RIPE prefixes after maximum aggregation: 15885
Prefixes being announced from the RIPE address blocks: 18163
Unique aggregates announced from the RIPE address blocks: 12102
RIPE Region origin ASes present in the Internet Routing Table: 4596
RIPE Region origin ASes announcing only one prefix: 2491
RIPE Region transit ASes present in the Internet Routing Table: 814
Average RIPE Region AS path length visible: 5.4
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 131382144
Equivalent to 7 /8s, 212 /16s and 187 /24s
Percentage of available RIPE address space announced: 71.2
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: 5354
Total LACNIC prefixes after maximum aggregation: 2255
Prefixes being announced from the LACNIC address blocks: 4774
Unique aggregates announced from the LACNIC address blocks: 2970
LACNIC Region origin ASes present in the Internet Routing Table: 333
LACNIC Region origin ASes announcing only one prefix: 86
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: 12573184
Equivalent to 0 /8s, 191 /16s and 218 /24s
Percentage of available LACNIC address space announced: 37.5
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 1082 1103 770 Telstra Pty Ltd
4755 415 134 71 Videsh Sanchar Nigam Ltd. Aut
2907 377 1927 353 SINET Japan
17557 374 26 149 Pakistan Telecom
703 347 373 276 UUNET
2764 314 341 279 connect.com.au pty ltd
4814 295 86 19 China Telecom (Group)
7474 270 290 203 Optus Communications Pty Ltd
17676 248 3830 17 XTAGE CORPORATION
3786 243 773 210 DACOM Corporation
4134 235 2042 117 Data Communications Bureau
9583 225 34 17 Satyam Infoway Ltd.,
4766 213 2475 159 Korea Internet Exchange for "
9443 184 58 84 Primus Telecommunications
9800 181 260 59 CHINA UNICOM
9498 142 10 17 BHARTI BT INTERNET LTD.
4739 137 57 125 Commerical Internet eXchange
9238 134 8 17 TATA ISP
7539 129 156 103 TANet2, sponsored by NSC, TAI
4716 128 745 122 TTnet
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1562 8933 1099 UUNET Technologies, Inc.
7018 1336 7208 923 AT&T
7132 965 6475 206 Southwestern Bell Internet Se
1239 941 3018 661 Sprint
3908 926 1557 486 Supernet, Inc.
189 705 341 292 Genuity
1 658 2607 448 GENUITY
7843 652 347 183 Adelphia Corp.
4323 596 525 174 Time Warner Communications, I
18566 579 160 8 Covad Communications
2386 566 507 266 AT&T Data Communications Serv
852 534 1123 422 Telus Advanced Communications
705 510 272 333 UUNET Technologies, Inc.
209 489 2104 294 Qwest
6197 487 341 196 BellSouth Network Solutions,
690 476 68 315 Merit Network
20115 472 195 288 Charter Communications
6198 463 229 177 BellSouth Network Solutions,
4355 400 322 110 EarthLink, Inc.
3561 381 2334 314 Cable & Wireless USA
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 755 2175 641 UUNET - Commercial IP service
3320 346 2004 228 Deutsche Telekom AG
3301 306 1157 293 TeliaNet Sweden
3215 302 852 173 France Telecom Transpac
680 232 2053 229 DFN-IP service G-WiN
1257 227 327 189 SWIPnet Swedish IP Network
8220 224 384 211 COLT Internet - International
719 215 307 124 LANLINK autonomous system
5400 204 121 115 BT Ignite European Backbone
5515 181 795 152 Sonera Solution Autonomous Sy
786 179 1874 179 The JANET IP Service
8708 154 44 149 Romania Data Systems S.A.
3303 143 549 140 Swisscom Ltd
12302 128 18 35 MobiFon S.A.
20858 126 17 3 This AS will be used to conne
2856 122 1299 112 BTnet UK Regional network
3269 116 819 63 TELECOM ITALIA
3246 112 365 110 Song Networks
3352 108 780 32 Ibernet, Internet Access Netw
2647 99 4129 39 SITA
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 297 82 108 ImpSat
7303 246 37 59 Telecom Argentina Stet-France
8151 215 350 118 UniNet S.A. de C.V.
11172 169 66 41 Servicios Alestra S.A de C.V
16814 137 9 18 NSS, S.A.
6503 136 190 99 AVANTEL, S.A.
10620 113 7 33 TVCABLE BOGOTA
11340 105 3 33 Red Universitaria Nacional
6147 95 62 20 Telefonica Del Peru
11992 85 8 37 Integrated Systems
8065 80 8 14 Empresas Publicas de Medellin
6535 74 5 23 Chilesat Servicios Empresari
1916 73 306 43 Fundacao de Amparo a Pesquisa
15311 71 12 35 Telefonica Empresas
4270 68 18 9 Red de Interconexion Universi
13999 68 36 8 Mega Cable S.A. de C.V.
11830 66 4 27 Instituto Costarricense de El
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
7738 63 186 12 Telecomunicacoes da Bahia S.A
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
7132 965 759 Southwestern Bell Internet Se
18566 579 571 Covad Communications
7843 652 469 Adelphia Corp.
3908 926 440 Supernet, Inc.
4323 596 422 Time Warner Communications, I
7018 1336 413 AT&T
189 705 413 Genuity
4755 415 344 Videsh Sanchar Nigam Ltd. Aut
1221 1082 312 Telstra Pty Ltd
2386 566 300 AT&T Data Communications Serv
6197 487 291 BellSouth Network Solutions,
4355 400 290 EarthLink, Inc.
6198 463 286 BellSouth Network Solutions,
6347 361 282 SAVVIS Communications Corpora
1239 941 280 Sprint
4814 295 276 China Telecom (Group)
22927 289 276 TELEFONICA DE ARGENTINA
27364 294 274 Armstrong Cable Services
22909 272 257 Comcast Cable Corporation
17676 248 231 XTAGE CORPORATION
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65516 PRIVATE 61.232.70.0/24 17621 China Netcom Corp.
65516 PRIVATE 61.232.71.0/24 17621 China Netcom Corp.
65516 PRIVATE 61.232.72.0/22 17621 China Netcom Corp.
1877 UNALLOCATED 192.108.199.0/24 1880 Stupi, house man's p
64732 PRIVATE 202.38.166.0/23 9808 Guangdong Mobile Com
29847 UNALLOCATED 209.98.156.0/22 8015 Vector Internet Serv
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
132.0.0.0/10 568 DISO-UNRRA
137.0.0.0/13 568 DISO-UNRRA
158.0.0.0/13 568 DISO-UNRRA
192.16.52.0/24 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
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:18 /9:5 /10:8 /11:13 /12:52
/13:98 /14:254 /15:468 /16:7418 /17:1683 /18:2970
/19:8421 /20:8423 /21:6115 /22:9048 /23:10647 /24:68825
/25:162 /26:210 /27:52 /28:26 /29:12 /30:20
/31:0 /32:25
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 628 705 Genuity
3908 578 926 Supernet, Inc.
18566 573 579 Covad Communications
702 463 755 UUNET - Commercial IP service
7018 463 1336 AT&T
701 440 1562 UUNET Technologies, Inc.
690 428 476 Merit Network
7843 416 652 Adelphia Corp.
6197 363 487 BellSouth Network Solutions,
6198 362 463 BellSouth Network Solutions,
1239 351 941 Sprint
2386 346 566 AT&T Data Communications Serv
20115 333 472 Charter Communications
3320 289 346 Deutsche Telekom AG
27364 287 294 Armstrong Cable Services
4814 281 295 China Telecom (Group)
1 245 658 GENUITY
22927 227 289 TELEFONICA DE ARGENTINA
3215 225 302 France Telecom Transpac
19262 219 249 Verizon Global Networks
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:706 13:1 15:4 16:1 17:3 20:8
24:826 25:1 32:87 38:123 40:19 44:2
55:1 57:17 61:459 62:528 63:1878 64:1773
65:1930 66:2483 67:175 68:383 69:150 80:346
81:124 128:140 129:181 130:47 131:80 132:12
133:1 134:177 135:4 136:117 137:107 138:108
139:64 140:138 141:117 142:93 143:44 144:102
145:14 146:270 147:95 148:289 149:68 150:44
151:74 152:241 153:57 154:7 155:111 156:50
157:40 158:126 159:145 160:39 161:75 162:128
163:76 164:122 165:144 166:93 167:325 168:399
169:62 170:312 171:7 192:5310 193:2438 194:1954
195:1015 196:478 198:3574 199:2727 200:2973 202:3782
203:5249 204:2998 205:2054 206:2370 207:2376 208:2625
209:2844 210:809 211:334 212:1000 213:794 214:20
215:23 216:3265 217:615 218:89 219:39 220:95
221:2
End of report
