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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 23 May, 2003
Analysis Summary
----------------
BGP routing table entries examined: 125972
Prefixes after maximum aggregation: 78711
Unique aggregates announced to Internet: 59075
Total ASes present in the Internet Routing Table: 15188
Origin-only ASes present in the Internet Routing Table: 13170
Origin ASes announcing only one prefix: 5960
Transit ASes present in the Internet Routing Table: 2018
Transit-only ASes present in the Internet Routing Table: 72
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: 18
Number of addresses announced to Internet: 1230024512
Equivalent to 73 /8s, 80 /16s and 175 /24s
Percentage of available address space announced: 33.2
Percentage of allocated address space announced: 59.3
Percentage of available address space allocated: 55.9
Total number of prefixes smaller than registry allocations: 54729
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21401
Total APNIC prefixes after maximum aggregation: 12459
Prefixes being announced from the APNIC address blocks: 19802
Unique aggregates announced from the APNIC address blocks: 12009
APNIC Region origin ASes present in the Internet Routing Table: 1803
APNIC Region origin ASes announcing only one prefix: 525
APNIC Region transit ASes present in the Internet Routing Table: 302
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 113422752
Equivalent to 6 /8s, 194 /16s and 177 /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: 77744
Total ARIN prefixes after maximum aggregation: 48204
Prefixes being announced from the ARIN address blocks: 55784
Unique aggregates announced from the ARIN address blocks: 16543
ARIN Region origin ASes present in the Internet Routing Table: 8413
ARIN Region origin ASes announcing only one prefix: 2870
ARIN Region transit ASes present in the Internet Routing Table: 810
Average ARIN Region AS path length visible: 4.6
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 192090112
Equivalent to 11 /8s, 115 /16s and 16 /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: 21484
Total RIPE prefixes after maximum aggregation: 15803
Prefixes being announced from the RIPE address blocks: 18002
Unique aggregates announced from the RIPE address blocks: 11988
RIPE Region origin ASes present in the Internet Routing Table: 4565
RIPE Region origin ASes announcing only one prefix: 2478
RIPE Region transit ASes present in the Internet Routing Table: 808
Average RIPE Region AS path length visible: 5.5
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 130296832
Equivalent to 7 /8s, 196 /16s and 44 /24s
Percentage of available RIPE address space announced: 70.6
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: 5342
Total LACNIC prefixes after maximum aggregation: 2245
Prefixes being announced from the LACNIC address blocks: 4757
Unique aggregates announced from the LACNIC address blocks: 2974
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: 12579840
Equivalent to 0 /8s, 191 /16s and 244 /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 771 Telstra Pty Ltd
4755 402 134 71 Videsh Sanchar Nigam Ltd. Aut
2907 376 1927 353 SINET Japan
17557 375 26 150 Pakistan Telecom
703 343 373 275 UUNET
2764 316 342 280 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 242 773 209 DACOM Corporation
4134 235 2042 117 Data Communications Bureau
9583 220 34 17 Satyam Infoway Ltd.,
4766 213 2475 159 Korea Internet Exchange for "
9443 183 58 83 Primus Telecommunications
9800 181 260 59 CHINA UNICOM
9498 141 10 16 BHARTI BT INTERNET LTD.
4739 137 57 125 Commerical Internet eXchange
9238 134 8 17 TATA ISP
7539 128 139 102 TANet2, sponsored by NSC, TAI
4716 127 729 121 TTnet
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1560 8933 1101 UUNET Technologies, Inc.
7018 1333 7193 930 AT&T
4151 1255 691 60 USDA
7132 965 6475 207 Southwestern Bell Internet Se
1239 943 3010 665 Sprint
3908 926 1557 484 Supernet, Inc.
189 706 341 289 Genuity
7843 673 348 176 Adelphia Corp.
1 658 2622 447 GENUITY
4323 599 525 175 Time Warner Communications, I
18566 575 160 8 Covad Communications
2386 572 507 272 AT&T Data Communications Serv
852 536 1155 424 Telus Advanced Communications
705 510 272 333 UUNET Technologies, Inc.
209 488 2104 294 Qwest
6197 487 341 196 BellSouth Network Solutions,
7066 485 204 260 Virginia Polytechnic Institut
690 477 69 316 Merit Network
20115 472 195 288 Charter Communications
6198 463 229 177 BellSouth Network Solutions,
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 308 1157 295 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 223 384 210 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
786 177 1858 177 The JANET IP Service
20858 164 17 3 This AS will be used to conne
8708 154 44 149 Romania Data Systems S.A.
3303 143 549 140 Swisscom Ltd
12302 128 18 35 MobiFon S.A.
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 300 98 108 ImpSat
7303 245 36 58 Telecom Argentina Stet-France
8151 212 350 118 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 106 3 34 Red Universitaria Nacional
6147 96 62 20 Telefonica Del Peru
11992 86 8 36 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.
7738 67 186 12 Telecomunicacoes da Bahia S.A
11830 66 4 27 Instituto Costarricense de El
7080 64 4 1 Electronica y Comunicaciones
7927 64 5 39 Global One Venezuela
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4151 1255 1195 USDA
7132 965 758 Southwestern Bell Internet Se
18566 575 567 Covad Communications
7843 673 497 Adelphia Corp.
3908 926 442 Supernet, Inc.
4323 599 424 Time Warner Communications, I
189 706 417 Genuity
7018 1333 403 AT&T
4755 402 331 Videsh Sanchar Nigam Ltd. Aut
1221 1082 311 Telstra Pty Ltd
2386 572 300 AT&T Data Communications Serv
6197 487 291 BellSouth Network Solutions,
4355 401 290 EarthLink, Inc.
6198 463 286 BellSouth Network Solutions,
22927 298 285 TELEFONICA DE ARGENTINA
6347 362 283 SAVVIS Communications Corpora
1239 943 278 Sprint
4814 295 276 China Telecom (Group)
27364 294 274 Armstrong Cable Services
22909 272 257 Comcast Cable Corporation
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
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 /12:51
/13:98 /14:254 /15:472 /16:7412 /17:1677 /18:2965
/19:8411 /20:8398 /21:6096 /22:9021 /23:10645 /24:69915
/25:164 /26:215 /27:52 /28:26 /29:11 /30:21
/31:0 /32:24
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
189 629 706 Genuity
3908 578 926 Supernet, Inc.
18566 569 575 Covad Communications
702 464 755 UUNET - Commercial IP service
7018 463 1333 AT&T
7843 437 673 Adelphia Corp.
701 436 1560 UUNET Technologies, Inc.
690 428 477 Merit Network
7066 382 485 Virginia Polytechnic Institut
6197 363 487 BellSouth Network Solutions,
6198 362 463 BellSouth Network Solutions,
2386 352 572 AT&T Data Communications Serv
1239 351 943 Sprint
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 236 298 TELEFONICA DE ARGENTINA
3215 225 302 France Telecom Transpac
Number of /24s announced per /8 block (Global)
----------------------------------------------
12:704 13:1 15:4 16:1 17:3 20:8
24:832 25:1 32:87 38:123 40:19 44:2
55:1 57:17 61:454 62:563 63:1879 64:1769
65:1923 66:2446 67:174 68:388 69:142 80:346
81:124 128:145 129:178 130:44 131:80 132:12
133:1 134:177 135:4 136:116 137:108 138:108
139:64 140:136 141:117 142:93 143:44 144:103
145:14 146:262 147:95 148:289 149:70 150:44
151:79 152:241 153:57 154:7 155:108 156:48
157:39 158:126 159:145 160:39 161:75 162:130
163:75 164:306 165:144 166:93 167:330 168:407
169:62 170:312 171:7 192:5298 193:2397 194:1975
195:1010 196:464 198:3574 199:3919 200:2951 202:3733
203:5208 204:3001 205:2056 206:2381 207:2375 208:2627
209:2840 210:799 211:331 212:946 213:756 214:20
215:23 216:3253 217:610 218:90 219:37 220:94
221:2
End of report
