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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 10 Jul, 2003
Analysis Summary
----------------
BGP routing table entries examined: 126914
Prefixes after maximum aggregation: 79244
Unique aggregates announced to Internet: 60035
Total ASes present in the Internet Routing Table: 15476
Origin-only ASes present in the Internet Routing Table: 13412
Origin ASes announcing only one prefix: 6081
Transit ASes present in the Internet Routing Table: 2064
Transit-only ASes present in the Internet Routing Table: 74
Average AS path length visible in the Internet Routing Table: 4.9
Max AS path length visible: 255
Illegal AS announcements present in the Routing Table: 2
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 15
Number of addresses announced to Internet: 1237236064
Equivalent to 73 /8s, 190 /16s and 185 /24s
Percentage of available address space announced: 33.4
Percentage of allocated address space announced: 59.7
Percentage of available address space allocated: 56.0
Total number of prefixes smaller than registry allocations: 56216
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 21887
Total APNIC prefixes after maximum aggregation: 12621
Prefixes being announced from the APNIC address blocks: 20348
Unique aggregates announced from the APNIC address blocks: 12367
APNIC Region origin ASes present in the Internet Routing Table: 1852
APNIC Region origin ASes announcing only one prefix: 530
APNIC Region transit ASes present in the Internet Routing Table: 301
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 18
Number of APNIC addresses announced to Internet: 117064480
Equivalent to 6 /8s, 250 /16s and 67 /24s
Percentage of available APNIC address space announced: 63.1
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: 77306
Total ARIN prefixes after maximum aggregation: 48191
Prefixes being announced from the ARIN address blocks: 55158
Unique aggregates announced from the ARIN address blocks: 16646
ARIN Region origin ASes present in the Internet Routing Table: 8500
ARIN Region origin ASes announcing only one prefix: 2897
ARIN Region transit ASes present in the Internet Routing Table: 824
Average ARIN Region AS path length visible: 4.7
Max ARIN Region AS path length visible: 17
Number of ARIN addresses announced to Internet: 194433536
Equivalent to 11 /8s, 150 /16s and 210 /24s
Percentage of available ARIN address space announced: 72.4
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
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: 22343
Total RIPE prefixes after maximum aggregation: 16147
Prefixes being announced from the RIPE address blocks: 18744
Unique aggregates announced from the RIPE address blocks: 12392
RIPE Region origin ASes present in the Internet Routing Table: 4711
RIPE Region origin ASes announcing only one prefix: 2564
RIPE Region transit ASes present in the Internet Routing Table: 837
Average RIPE Region AS path length visible: 5.5
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 133138368
Equivalent to 7 /8s, 239 /16s and 135 /24s
Percentage of available RIPE address space announced: 72.1
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: 5376
Total LACNIC prefixes after maximum aggregation: 2285
Prefixes being announced from the LACNIC address blocks: 4816
Unique aggregates announced from the LACNIC address blocks: 3075
LACNIC Region origin ASes present in the Internet Routing Table: 339
LACNIC Region origin ASes announcing only one prefix: 90
LACNIC Region transit ASes present in the Internet Routing Table: 70
Average LACNIC Region AS path length visible: 5.3
Max LACNIC Region AS path length visible: 25
Number of LACNIC addresses announced to Internet: 12820736
Equivalent to 0 /8s, 195 /16s and 161 /24s
Percentage of available LACNIC address space announced: 38.2
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 1053 1069 744 Telstra Pty Ltd
4755 405 133 59 Videsh Sanchar Nigam Ltd. Aut
2907 374 1896 350 SINET Japan
17557 342 24 148 Pakistan Telecom
703 333 370 266 UUNET
2764 307 325 274 connect.com.au pty ltd
7474 268 306 200 Optus Communications Pty Ltd
17676 250 3862 19 XTAGE CORPORATION
3786 243 777 210 DACOM Corporation
9583 234 37 22 Satyam Infoway Ltd.,
4134 227 1912 112 Data Communications Bureau
4766 224 2476 167 Korea Internet Exchange for "
9800 186 304 61 CHINA UNICOM
9443 180 58 83 Primus Telecommunications
9498 175 11 23 BHARTI BT INTERNET LTD.
9929 169 170 34 China Netcom Corp.
4538 168 1506 21 China Education and Research
4739 141 58 130 Commerical Internet eXchange
9238 138 8 20 TATA ISP
4716 132 745 126 TTnet
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 1529 8814 1075 UUNET Technologies, Inc.
7018 1346 7181 928 AT&T
1239 951 2997 665 Sprint
3908 902 1517 472 Supernet, Inc.
7132 838 6605 231 Southwestern Bell Internet Se
189 684 372 307 Genuity
18566 626 160 8 Covad Communications
4323 610 526 177 Time Warner Communications, I
7843 582 359 239 Adelphia Corp.
1 581 2472 386 GENUITY
11305 549 170 72 Interland Incorporated
852 527 1124 417 Telus Advanced Communications
6197 526 367 220 BellSouth Network Solutions,
209 516 2126 303 Qwest
705 490 198 310 UUNET Technologies, Inc.
7066 490 204 259 Virginia Polytechnic Institut
6198 479 267 183 BellSouth Network Solutions,
20115 460 195 282 Charter Communications
690 448 64 294 Merit Network
2386 407 541 232 AT&T Data Communications Serv
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1018 2154 626 UUNET - Commercial IP service
3301 294 1169 282 TeliaNet Sweden
3320 268 2004 229 Deutsche Telekom AG
719 266 307 125 LANLINK autonomous system
3215 240 801 136 France Telecom Transpac
680 232 2053 229 DFN-IP service G-WiN
8220 231 386 219 COLT Internet - International
1257 224 307 186 SWIPnet Swedish IP Network
5400 199 142 116 BT Ignite European Backbone
5515 187 795 150 Sonera Solution Autonomous Sy
786 179 1874 179 The JANET IP Service
8708 154 44 150 Romania Data Systems S.A.
3303 141 549 138 Swisscom Ltd
12302 127 18 34 MobiFon S.A.
2856 125 1315 116 BTnet UK Regional network
3246 122 373 118 Song Networks
3269 117 821 64 TELECOM ITALIA
3352 107 796 32 Ibernet, Internet Access Netw
2647 97 4129 40 SITA
5511 96 177 74 France Telecom
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 297 98 105 ImpSat
7303 236 37 59 Telecom Argentina Stet-France
8151 216 350 116 UniNet S.A. de C.V.
11172 171 66 40 Servicios Alestra S.A de C.V
11340 140 4 48 Red Universitaria Nacional
16814 135 9 17 NSS, S.A.
6503 133 189 96 AVANTEL, S.A.
10620 115 7 32 TVCABLE BOGOTA
6147 98 70 20 Telefonica Del Peru
11992 88 8 38 Integrated Systems
13999 86 36 8 Mega Cable S.A. de C.V.
8065 80 9 16 Empresas Publicas de Medellin
6535 75 5 18 Chilesat Servicios Empresari
15311 74 14 38 Telefonica Empresas
1916 73 306 43 Fundacao de Amparo a Pesquisa
11830 70 5 29 Instituto Costarricense de El
4270 67 18 9 Red de Interconexion Universi
7080 64 4 1 Electronica y Comunicaciones
7927 64 6 39 Global One Venezuela
7984 60 12 40 Global One Colombia
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
18566 626 618 Covad Communications
7132 838 607 Southwestern Bell Internet Se
11305 549 477 Interland Incorporated
4323 610 433 Time Warner Communications, I
3908 902 430 Supernet, Inc.
7018 1346 418 AT&T
702 1018 392 UUNET - Commercial IP service
189 684 377 Genuity
4755 405 346 Videsh Sanchar Nigam Ltd. Aut
7843 582 343 Adelphia Corp.
1221 1053 309 Telstra Pty Ltd
6197 526 306 BellSouth Network Solutions,
6198 479 296 BellSouth Network Solutions,
4355 406 295 EarthLink, Inc.
27364 305 287 Armstrong Cable Services
1239 951 286 Sprint
6347 362 281 SAVVIS Communications Corpora
22909 277 265 Comcast Cable Corporation
25844 258 256 Skadden, Arps, Slate, Meagher
376 376 250 Reseau Interordinateurs Scien
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
64732 PRIVATE 202.38.166.0/23 9808 Guangdong Mobile Com
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
192.43.230.0/24 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
192.153.136.0/21 568 DISO-UNRRA
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 /8:19 /9:5 /10:8 /11:13 /12:54
/13:97 /14:259 /15:474 /16:7420 /17:1727 /18:3048
/19:8584 /20:8602 /21:6288 /22:9211 /23:10745 /24:69732
/25:175 /26:272 /27:70 /28:39 /29:22 /30:23
/31:0 /32:27
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
702 715 1018 UUNET - Commercial IP service
18566 620 626 Covad Communications
189 604 684 Genuity
3908 577 902 Supernet, Inc.
7018 476 1346 AT&T
11305 475 549 Interland Incorporated
701 434 1529 UUNET Technologies, Inc.
690 406 448 Merit Network
6197 397 526 BellSouth Network Solutions,
7066 386 490 Virginia Polytechnic Institut
6198 374 479 BellSouth Network Solutions,
1239 356 951 Sprint
7843 341 582 Adelphia Corp.
20115 320 460 Charter Communications
27364 299 305 Armstrong Cable Services
25844 258 258 Skadden, Arps, Slate, Meagher
1 222 581 GENUITY
4355 216 406 EarthLink, Inc.
3320 209 268 Deutsche Telekom AG
705 206 490 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 12:702 13:1 15:4 16:1 17:3
20:6 24:854 25:1 32:95 38:42 40:21
44:2 57:15 61:261 62:358 63:1876 64:1772
65:1968 66:2556 67:195 68:372 69:192 80:390
81:120 82:6 128:144 129:161 130:49 131:79
132:27 134:175 135:4 136:118 137:107 138:114
139:65 140:141 141:117 142:95 143:45 144:97
145:13 146:280 147:95 148:289 149:62 150:83
151:70 152:233 153:101 154:3 155:118 156:56
157:46 158:129 159:140 160:45 161:75 162:377
163:79 164:320 165:143 166:95 167:321 168:174
169:109 170:321 171:8 192:5336 193:2607 194:1981
195:1098 196:470 198:3584 199:2692 200:2955 202:3893
203:5261 204:2984 205:2034 206:2325 207:2432 208:2590
209:2855 210:867 211:359 212:1001 213:870 214:19
215:23 216:3438 217:657 218:93 219:65 220:97
221:8
End of report
