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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 09:43 +10GMT Thu 14 Apr, 2005
Analysis Summary
----------------
BGP routing table entries examined: 159621
Prefixes after maximum aggregation: 93083
Unique aggregates announced to Internet: 76839
Total ASes present in the Internet Routing Table: 19393
Origin-only ASes present in the Internet Routing Table: 16885
Origin ASes announcing only one prefix: 7892
Transit ASes present in the Internet Routing Table: 2508
Transit-only ASes present in the Internet Routing Table: 66
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 23
Prefixes from unregistered ASNs in the Routing Table: 13
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 14
Number of addresses announced to Internet: 1380927360
Equivalent to 82 /8s, 79 /16s and 71 /24s
Percentage of available address space announced: 37.3
Percentage of allocated address space announced: 58.5
Percentage of available address space allocated: 63.7
Total number of prefixes smaller than registry allocations: 74426
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 32491
Total APNIC prefixes after maximum aggregation: 15362
Prefixes being announced from the APNIC address blocks: 30417
Unique aggregates announced from the APNIC address blocks: 15397
APNIC Region origin ASes present in the Internet Routing Table: 2241
APNIC Region origin ASes announcing only one prefix: 657
APNIC Region transit ASes present in the Internet Routing Table: 338
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 181556352
Equivalent to 10 /8s, 210 /16s and 84 /24s
Percentage of available APNIC address space announced: 67.4
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575
APNIC Address Blocks 58/7, 60/7, 124/7, 126/8, 202/7, 210/7, 218/7,
220/7 and 222/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 86816
Total ARIN prefixes after maximum aggregation: 53055
Prefixes being announced from the ARIN address blocks: 67654
Unique aggregates announced from the ARIN address blocks: 24846
ARIN Region origin ASes present in the Internet Routing Table: 9854
ARIN Region origin ASes announcing only one prefix: 3575
ARIN Region transit ASes present in the Internet Routing Table: 927
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 21
Number of ARIN addresses announced to Internet: 244410624
Equivalent to 14 /8s, 145 /16s and 105 /24s
Percentage of available ARIN address space announced: 69.4
ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations) 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, 29696-30719, 31744-33791
35840-36863
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 70/6, 198/7, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 30302
Total RIPE prefixes after maximum aggregation: 20964
Prefixes being announced from the RIPE address blocks: 27334
Unique aggregates announced from the RIPE address blocks: 18242
RIPE Region origin ASes present in the Internet Routing Table: 6524
RIPE Region origin ASes announcing only one prefix: 3442
RIPE Region transit ASes present in the Internet Routing Table: 1085
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 23
Number of RIPE addresses announced to Internet: 200960704
Equivalent to 11 /8s, 250 /16s and 106 /24s
Percentage of available RIPE address space announced: 70.5
RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631
6656-6911, 8192-9215, 12288-13311, 15360-16383
20480-21503, 24576-25599, 28672-29695
30720-31743, 33792-35839
RIPE Address Blocks 62/8, 80/5, 88/8, 188/8, 193/8, 194/7, 212/7
and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 8571
Total LACNIC prefixes after maximum aggregation: 2996
Prefixes being announced from the LACNIC address blocks: 6992
Unique aggregates announced from the LACNIC address blocks: 4043
LACNIC Region origin ASes present in the Internet Routing Table: 611
LACNIC Region origin ASes announcing only one prefix: 192
LACNIC Region transit ASes present in the Internet Routing Table: 114
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 21
Number of LACNIC addresses announced to Internet: 18095616
Equivalent to 1 /8s, 20 /16s and 30 /24s
Percentage of available LACNIC address space announced: 53.9
LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks 200/7
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 1424
Total AfriNIC prefixes after maximum aggregation: 706
Prefixes being announced from the AfriNIC address blocks: 925
Unique aggregates announced from the AfriNIC address blocks: 737
AfriNIC Region origin ASes present in the Internet Routing Table: 100
AfriNIC Region origin ASes announcing only one prefix: 26
AfriNIC Region transit ASes present in the Internet Routing Table: 13
Average AfriNIC Region AS path length visible: 4.5
Max AfriNIC Region AS path length visible: 12
Number of AfriNIC addresses announced to Internet: 2203648
Equivalent to 0 /8s, 33 /16s and 160 /24s
Percentage of available AfriNIC address space announced: 6.6
AfriNIC AS Blocks 36864-37887 & ERX transfers
AfriNIC Address Blocks 41/8, 196/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4134 899 4843 180 CHINANET-BACKBONE
1221 775 1193 552 Telstra Pty Ltd
9583 706 52 46 Sify Limited
4766 586 3415 275 Korea Telecom (KIX)
4755 546 243 113 Videsh Sanchar Nigam Ltd. Aut
7545 480 86 67 TPG Internet Pty Ltd
17676 429 6492 71 Softbank BB Corp.
9443 369 77 75 Primus Telecommunications
9929 358 175 45 China Netcom Corp.
2907 347 1838 321 SINET Japan
17557 337 24 152 Pakistan Telecom
10036 312 28 284 C&M Communication Co. Ltd.
4808 303 250 165 CNCGROUP IP network: China169
7474 296 268 213 SingTel Optus Pty Ltd
4802 279 47 164 Wantree Development
9498 266 82 52 BHARTI BT INTERNET LTD.
2764 260 238 198 AAPT Limited
703 257 279 211 UUNET - Commercial IP service
9800 238 386 69 CHINA UNICOM
18302 221 74 131 SK Global co., Ltd
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1473 6514 962 AT&T WorldNet Services
174 1140 5589 971 Cogent Communications
721 1119 21763 314 DLA Systems Automation Center
4323 1091 663 220 Time Warner Telecom
701 1010 8282 859 UUNET Technologies, Inc.
1239 916 2877 663 Sprint
6197 890 384 414 BellSouth Network Solutions,
2386 840 532 622 AT&T Data Communications Serv
18566 788 224 7 Covad Communications
209 647 3475 501 Qwest
20115 603 499 312 Charter Communications
3356 586 10852 435 Level 3 Communications, LLC
3561 542 2369 416 Savvis
852 538 1095 397 Telus Advanced Communications
27364 516 43 18 Armstrong Cable Services
3602 508 121 93 Sprint Canada, Inc.
5668 485 115 25 CenturyTel Internet Holdings,
22773 476 1188 21 Cox Communications, Inc.
6198 458 380 215 BellSouth Network Solutions,
6467 441 143 35 E.Spire Communications, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 598 2003 489 UUNET - Commercial IP service
3320 303 2993 237 Deutsche Telekom AG
3301 296 1116 286 TeliaNet Sweden
8220 278 472 271 COLT Telecommunications
680 253 2041 238 DFN-IP service G-WiN
3246 231 475 226 Song Networks
8708 227 251 208 Romania Data Systems S.A.
1257 198 695 174 SWIPnet Swedish IP Network
5515 178 778 128 Sonera Solution Autonomous Sy
786 176 1794 176 The JANET IP Service
3269 167 1472 73 TELECOM ITALIA
8866 165 21 12 Bulgarian Telecommunication C
6746 161 47 141 Dynamic Network Technologies,
719 159 340 101 LANLINK autonomous system
3300 150 184 84 AUCS Communications Services
5400 143 281 127 BT Ignite European Backbone
25186 139 137 97 France Telecom Transpac's Tra
6830 138 513 27 UPC Distribution Services
2856 128 2305 116 BTnet UK Regional network
9051 128 8 34 INCONET Autonomous System
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 352 533 146 UniNet S.A. de C.V.
16814 265 16 7 NSS, S.A.
11172 219 99 54 Servicios Alestra S.A de C.V
6147 205 102 20 Telefonica Del Peru
19632 190 14 7 Metropolis Intercom S.A.
7303 156 68 25 Telecom Argentina Stet-France
11664 152 19 23 Keytech SA
6505 131 90 88 Global One Communicaoes Ltda
22047 122 96 6 VTR PUNTO NET S.A.
14117 119 8 4 Telefonica del Sur S.A.
6503 104 146 74 AVANTEL, S.A.
18822 104 7 16 TELEFONICA MANQUEHUE
13999 103 52 9 Mega Cable S.A. de C.V.
11556 99 49 5 Cable-Wireless Panama
19169 95 6 16 Telconet
23216 89 24 23 RAMtelecom Telecomunicaciones
11311 85 8 21 Sinectis S.A.
5639 84 12 9 Telecommunications Services o
10481 82 32 7 Prima S.A.
4270 79 18 9 Red de Interconexion Universi
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 267 635 224 The Internet Solution
5536 118 15 17 Internet Egypt Network
2018 90 295 87 Tertiary Education Network
20928 90 16 2 Noor Advanced Technologies AS
2905 74 266 68 The Internetworking Company o
8452 64 20 5 TEDATA
24835 59 34 6 RAYA Telecom - Egypt
9129 43 3 3 UUNET Kenya
12455 42 7 4 Jambonet Autonomous system
5713 35 141 28 Telkom SA Ltd
6713 35 54 9 Itissalat Al-MAGHRIB
8524 24 1 4 AUCEGYPT Autonomous System
15475 22 84 4 Nile Online
16637 22 10 19 Johnnic e-Ventures
10798 19 1 11 Standard Bank of South Africa
7460 18 3 5 LIA Internet Access
21280 18 2 3 Swift Global Kenya Ltd.Is an
12258 17 3 11 Vodacom Internet Company
15808 16 1 1 Communication Solutions Ltd i
21491 16 1 3 UTL On-line is RF broadband I
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
0 0 65531 *
4323 1091 871 Time Warner Telecom
721 1119 805 DLA Systems Automation Center
18566 788 781 Covad Communications
4134 899 719 CHINANET-BACKBONE
9583 706 660 Sify Limited
27364 516 498 Armstrong Cable Services
6197 890 476 BellSouth Network Solutions,
5668 485 460 CenturyTel Internet Holdings,
22773 476 455 Cox Communications, Inc.
4755 546 433 Videsh Sanchar Nigam Ltd. Aut
3602 508 415 Sprint Canada, Inc.
7545 480 413 TPG Internet Pty Ltd
6467 441 406 E.Spire Communications, Inc.
17676 429 358 Softbank BB Corp.
6140 398 326 ImpSat
9929 358 313 China Netcom Corp.
4766 586 311 Korea Telecom (KIX)
9443 369 294 Primus Telecommunications
20115 603 291 Charter Communications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65503 PRIVATE 193.125.183.0/24 3217 SIMBIRSK
30999 UNALLOCATED 196.192.80.0/24 6774 BELGACOM
65004 PRIVATE 200.0.113.0/24 28477 Universidad Autonoma
65004 PRIVATE 200.4.0.0/24 28477 Universidad Autonoma
65004 PRIVATE 200.4.1.0/24 28477 Universidad Autonoma
65004 PRIVATE 200.4.2.0/24 28477 Universidad Autonoma
65004 PRIVATE 200.4.3.0/24 28477 Universidad Autonoma
65004 PRIVATE 200.4.4.0/24 28477 Universidad Autonoma
65004 PRIVATE 200.4.5.0/24 28477 Universidad Autonoma
65004 PRIVATE 200.4.6.0/24 28477 Universidad Autonoma
65444 PRIVATE 212.25.125.0/24 8551 Bezeq International
65529 PRIVATE 216.21.199.0/24 14697 VDot.Net
65529 PRIVATE 216.152.237.0/24 14697 VDot.Net
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
132.0.0.0/10 721 DLA Systems Automation Center
137.0.0.0/13 721 DLA Systems Automation Center
158.0.0.0/13 721 DLA Systems Automation Center
172.32.0.0/24 7011 Citizens Utilities
172.122.28.0/24 210 Utah Education Network
192.43.230.0/24 7575 Australian Academic and Rease
192.44.0.0/24 5501 Fraunhofer Gesellschaft
192.44.0.0/19 702 UUNET - Commercial IP service
192.70.164.0/24 25689 National Research Council of
192.84.205.0/24 719 LANLINK autonomous system
192.119.135.0/24 270 NASA
192.135.50.0/24 7018 AT&T WorldNet Services
192.172.0.0/19 721 DLA Systems Automation Center
192.200.100.0/24 7018 AT&T WorldNet Services
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:18 /9:3 /10:8 /11:15 /12:67
/13:152 /14:307 /15:577 /16:8351 /17:2514 /18:4311
/19:10189 /20:10921 /21:8791 /22:12084 /23:13179 /24:87252
/25:284 /26:264 /27:139 /28:67 /29:37 /30:63
/31:0 /32:28
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 772 788 Covad Communications
6197 731 890 BellSouth Network Solutions,
7018 658 1473 AT&T WorldNet Services
2386 596 840 AT&T Data Communications Serv
9583 525 706 Sify Limited
4323 508 1091 Time Warner Telecom
27364 504 516 Armstrong Cable Services
5668 405 485 CenturyTel Internet Holdings,
4766 402 586 Korea Telecom (KIX)
1239 383 916 Sprint
702 365 598 UUNET - Commercial IP service
6198 336 458 BellSouth Network Solutions,
6467 321 441 E.Spire Communications, Inc.
10036 312 312 C&M Communication Co. Ltd.
6517 290 313 Yipes Communications, Inc.
9929 282 358 China Netcom Corp.
7011 280 329 Citizens Utilities
11456 269 316 Carolina Online, Inc.
15270 253 273 PaeTec.net -a division of Pae
174 248 1140 Cogent Communications
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 8:11 12:1520 13:1 15:9 16:2
17:3 18:4 20:4 24:808 32:63 33:4
38:106 40:53 44:3 47:2 52:4 55:2
56:3 57:24 58:40 59:23 60:19 61:698
62:579 63:1888 64:2659 65:2078 66:2745 67:529
68:515 69:971 70:84 71:6 72:133 80:544
81:530 82:377 83:233 84:147 85:166 128:137
129:157 130:88 131:281 132:35 133:1 134:149
135:40 136:191 137:66 138:175 139:55 140:190
141:106 142:137 143:130 144:173 145:32 146:280
147:103 148:289 149:170 150:98 151:63 152:107
153:87 154:4 155:143 156:69 157:89 158:168
159:172 160:73 161:60 162:200 163:85 164:205
165:176 166:154 167:231 168:416 169:139 170:312
171:8 172:2 192:5682 193:3148 194:2329 195:1544
196:643 198:3940 199:3277 200:4012 201:114 202:5479
203:6131 204:3821 205:2013 206:2443 207:2738 208:2075
209:3289 210:1677 211:838 212:1177 213:1275 214:273
215:31 216:3587 217:1161 218:186 219:103 220:373
221:180 222:73
End of report
