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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 22 Jun, 2005
Analysis Summary
----------------
BGP routing table entries examined: 165377
Prefixes after maximum aggregation: 95520
Unique aggregates announced to Internet: 79586
Total ASes present in the Internet Routing Table: 19906
Origin-only ASes present in the Internet Routing Table: 17349
Origin ASes announcing only one prefix: 8141
Transit ASes present in the Internet Routing Table: 2557
Transit-only ASes present in the Internet Routing Table: 72
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 24
Prefixes from unregistered ASNs in the Routing Table: 16
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 15
Number of addresses announced to Internet: 1402034144
Equivalent to 83 /8s, 145 /16s and 87 /24s
Percentage of available address space announced: 37.8
Percentage of allocated address space announced: 58.1
Percentage of available address space allocated: 65.1
Total number of prefixes smaller than registry allocations: 78177
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 34231
Total APNIC prefixes after maximum aggregation: 15838
Prefixes being announced from the APNIC address blocks: 32118
Unique aggregates announced from the APNIC address blocks: 15961
APNIC Region origin ASes present in the Internet Routing Table: 2296
APNIC Region origin ASes announcing only one prefix: 674
APNIC Region transit ASes present in the Internet Routing Table: 348
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 19
Number of APNIC addresses announced to Internet: 187181184
Equivalent to 11 /8s, 40 /16s and 40 /24s
Percentage of available APNIC address space announced: 69.5
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911
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: 89083
Total ARIN prefixes after maximum aggregation: 54125
Prefixes being announced from the ARIN address blocks: 69576
Unique aggregates announced from the ARIN address blocks: 25488
ARIN Region origin ASes present in the Internet Routing Table: 10016
ARIN Region origin ASes announcing only one prefix: 3678
ARIN Region transit ASes present in the Internet Routing Table: 936
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 18
Number of ARIN addresses announced to Internet: 250632960
Equivalent to 14 /8s, 240 /16s and 91 /24s
Percentage of available ARIN address space announced: 62.2
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, 74/7, 76/8,
198/7, 204/6, 208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 31419
Total RIPE prefixes after maximum aggregation: 21668
Prefixes being announced from the RIPE address blocks: 28474
Unique aggregates announced from the RIPE address blocks: 19165
RIPE Region origin ASes present in the Internet Routing Table: 6777
RIPE Region origin ASes announcing only one prefix: 3564
RIPE Region transit ASes present in the Internet Routing Table: 1111
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 24
Number of RIPE addresses announced to Internet: 209420608
Equivalent to 12 /8s, 123 /16s and 129 /24s
Percentage of available RIPE address space announced: 73.4
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: 8964
Total LACNIC prefixes after maximum aggregation: 3119
Prefixes being announced from the LACNIC address blocks: 7343
Unique aggregates announced from the LACNIC address blocks: 4286
LACNIC Region origin ASes present in the Internet Routing Table: 622
LACNIC Region origin ASes announcing only one prefix: 189
LACNIC Region transit ASes present in the Internet Routing Table: 112
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 21
Number of LACNIC addresses announced to Internet: 20272160
Equivalent to 1 /8s, 53 /16s and 84 /24s
Percentage of available LACNIC address space announced: 30.2
LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks 189/8, 190/8, 200/7
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 1658
Total AfriNIC prefixes after maximum aggregation: 770
Prefixes being announced from the AfriNIC address blocks: 1008
Unique aggregates announced from the AfriNIC address blocks: 772
AfriNIC Region origin ASes present in the Internet Routing Table: 128
AfriNIC Region origin ASes announcing only one prefix: 36
AfriNIC Region transit ASes present in the Internet Routing Table: 16
Average AfriNIC Region AS path length visible: 4.7
Max AfriNIC Region AS path length visible: 12
Number of AfriNIC addresses announced to Internet: 2295040
Equivalent to 0 /8s, 35 /16s and 5 /24s
Percentage of available AfriNIC address space announced: 6.8
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 917 5150 192 CHINANET-BACKBONE
9583 765 76 13 Sify Limited
1221 761 1454 540 Telstra Pty Ltd
4755 630 247 141 Videsh Sanchar Nigam Ltd. Aut
4766 596 3413 279 Korea Telecom (KIX)
7545 499 104 70 TPG Internet Pty Ltd
17676 436 6589 75 Softbank BB Corp.
9443 374 77 76 Primus Telecommunications
9929 356 221 48 China Netcom Corp.
2907 345 1822 320 SINET Japan
10036 345 65 311 C&M Communication Co. Ltd.
9498 321 83 61 BHARTI BT INTERNET LTD.
17557 318 22 153 Pakistan Telecom
7474 314 272 217 SingTel Optus Pty Ltd
4802 282 49 161 Wantree Development
4808 282 245 160 CNCGROUP IP network: China169
9837 281 80 185 Powertel Ltd
17974 267 65 14 PT TELEKOMUNIKASI INDONESIA
18302 266 108 151 SK Global co., Ltd
703 253 276 207 UUNET - Commercial IP service
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1485 6477 973 AT&T WorldNet Services
174 1221 5793 1068 Cogent Communications
4323 1119 647 217 Time Warner Telecom
721 1106 21786 311 DLA Systems Automation Center
701 1005 8167 849 UUNET Technologies, Inc.
6197 926 534 428 BellSouth Network Solutions,
1239 890 2871 643 Sprint
2386 885 526 652 AT&T Data Communications Serv
18566 822 224 7 Covad Communications
20115 645 494 318 Charter Communications
209 632 3507 498 Qwest
27364 565 43 18 Armstrong Cable Services
3356 558 10821 427 Level 3 Communications, LLC
3602 543 123 101 Sprint Canada, Inc.
852 541 1093 388 Telus Advanced Communications
3561 538 2384 421 Savvis
22773 495 1188 23 Cox Communications, Inc.
5668 488 115 25 CenturyTel Internet Holdings,
7725 487 60 15 MediaOne
6198 464 416 218 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 597 2001 489 UUNET - Commercial IP service
3320 306 3232 242 Deutsche Telekom AG
3301 294 1080 282 TeliaNet Sweden
8220 268 469 264 COLT Telecommunications
680 252 2041 238 DFN-IP service G-WiN
8708 231 254 214 Romania Data Systems S.A.
3246 225 488 220 Song Networks
1257 197 712 173 SWIPnet Swedish IP Network
5515 179 778 129 Sonera Solution Autonomous Sy
786 176 1794 176 The JANET IP Service
3269 169 1520 72 TELECOM ITALIA
6746 168 47 146 Dynamic Network Technologies,
5400 162 285 137 BT Ignite European Backbone
8866 158 21 11 Bulgarian Telecommunication C
3300 155 184 88 AUCS Communications Services
25186 139 137 96 France Telecom Transpac's Tra
6830 138 529 28 UPC Distribution Services
9121 137 271 35 TTnet Autonomous System
2856 135 2313 117 BTnet UK Regional network
3352 135 1256 37 Ibernet, Internet Access Netw
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 379 600 151 UniNet S.A. de C.V.
16814 264 16 12 NSS, S.A.
11172 221 98 52 Servicios Alestra S.A de C.V
6147 196 108 22 Telefonica Del Peru
11664 196 19 23 Keytech SA
14117 152 9 5 Telefonica del Sur S.A.
7303 149 68 21 Telecom Argentina Stet-France
6505 131 90 88 Global One Communicaoes Ltda
11556 131 64 3 Cable-Wireless Panama
22047 131 96 6 VTR PUNTO NET S.A.
19169 111 7 22 Telconet
18822 109 7 14 TELEFONICA MANQUEHUE
19632 109 14 5 Metropolis Intercom S.A.
13999 107 52 9 Mega Cable S.A. de C.V.
6503 100 146 72 AVANTEL, S.A.
10481 97 40 7 Prima S.A.
21826 95 13 20 INTERCABLE
22927 95 73 25 TELEFONICA DE ARGENTINA
5639 94 12 9 Telecommunications Services o
23216 93 24 23 RAMtelecom Telecomunicaciones
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 266 637 223 The Internet Solution
5536 119 15 17 Internet Egypt Network
20928 96 16 2 Noor Advanced Technologies AS
2018 91 295 86 Tertiary Education Network
8452 89 28 6 TEDATA
2905 75 266 67 The Internetworking Company o
6713 59 54 8 Itissalat Al-MAGHRIB
24835 55 34 6 RAYA Telecom - Egypt
9129 44 3 3 UUNET Kenya
5713 36 142 29 Telkom SA Ltd
12455 36 6 3 Jambonet Autonomous system
15475 34 84 4 Nile Online
15706 31 8 3 Sudatel Internet Exchange Aut
8524 25 1 4 AUCEGYPT Autonomous System
16637 22 10 19 Johnnic e-Ventures
33765 20 3 8 TANZANIA TELECOMMUNICATIONS C
10798 19 1 11 Standard Bank of South Africa
23889 19 5 8 MAURITIUS TELECOM
21491 18 1 1 UTL On-line is RF broadband I
12258 17 3 11 Vodacom Internet Company
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1119 902 Time Warner Telecom
18566 822 815 Covad Communications
721 1106 795 DLA Systems Automation Center
9583 765 752 Sify Limited
4134 917 725 CHINANET-BACKBONE
27364 565 547 Armstrong Cable Services
6197 926 498 BellSouth Network Solutions,
4755 630 489 Videsh Sanchar Nigam Ltd. Aut
22773 495 472 Cox Communications, Inc.
7725 487 472 MediaOne
5668 488 463 CenturyTel Internet Holdings,
3602 543 442 Sprint Canada, Inc.
7545 499 429 TPG Internet Pty Ltd
6467 429 395 E.Spire Communications, Inc.
17676 436 361 Softbank BB Corp.
6140 403 330 ImpSat
20115 645 327 Charter Communications
4766 596 317 Korea Telecom (KIX)
9929 356 308 China Netcom Corp.
19262 407 303 Verizon Global Networks
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
65050 PRIVATE 168.96.148.0/24 6140 ImpSat
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
65004 PRIVATE 200.4.7.0/24 28477 Universidad Autonoma
64512 PRIVATE 200.61.32.0/23 11664 Keytech SA
64512 PRIVATE 200.61.62.0/23 11664 Keytech SA
64512 PRIVATE 200.80.154.0/23 11664 Keytech SA
65313 PRIVATE 203.184.140.0/24 9304 Hutchison Telecom (H
65005 PRIVATE 203.200.197.0/24 4755 Videsh Sanchar Nigam
65444 PRIVATE 212.25.125.0/24 8551 Bezeq International
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
50.160.0.0/13 1221 Telstra Pty Ltd
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
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
192.169.0.0/23 3970 RGnet, Inc.
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 /12:73
/13:160 /14:310 /15:592 /16:8428 /17:2588 /18:4446
/19:10423 /20:11289 /21:9276 /22:12751 /23:13771 /24:90242
/25:327 /26:311 /27:171 /28:43 /29:29 /30:70
/31:0 /32:33
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 806 822 Covad Communications
6197 754 926 BellSouth Network Solutions,
7018 689 1485 AT&T WorldNet Services
2386 600 885 AT&T Data Communications Serv
9583 581 765 Sify Limited
27364 556 565 Armstrong Cable Services
4323 541 1119 Time Warner Telecom
7725 458 487 MediaOne
4766 414 596 Korea Telecom (KIX)
5668 402 488 CenturyTel Internet Holdings,
1239 378 890 Sprint
702 369 597 UUNET - Commercial IP service
6198 338 464 BellSouth Network Solutions,
10036 335 345 C&M Communication Co. Ltd.
7011 304 354 Citizens Utilities
6467 296 429 E.Spire Communications, Inc.
15270 285 310 PaeTec.net -a division of Pae
20115 279 645 Charter Communications
9929 275 356 China Netcom Corp.
6517 273 295 Yipes Communications, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 8:15 12:1542 13:1 15:9 16:2
17:3 18:3 20:4 24:1175 30:2 32:69
33:4 38:131 40:54 44:3 47:2 52:4
55:2 56:3 57:27 58:91 59:47 60:56
61:787 62:622 63:1872 64:2777 65:2085 66:2923
67:590 68:537 69:1057 70:118 71:9 72:237
80:580 81:562 82:430 83:279 84:208 85:260
86:26 128:187 129:172 130:87 131:297 132:38
133:1 134:145 135:40 136:132 137:64 138:168
139:60 140:263 141:103 142:149 143:141 144:191
145:33 146:287 147:109 148:303 149:171 150:106
151:65 152:107 153:87 154:5 155:142 156:78
157:97 158:160 159:172 160:77 161:69 162:318
163:92 164:211 165:178 166:155 167:240 168:426
169:139 170:311 171:8 172:1 192:5711 193:3183
194:2385 195:1559 196:650 198:3909 199:3294 200:3998
201:169 202:5813 203:6359 204:3757 205:2031 206:2495
207:2829 208:2080 209:3323 210:1709 211:843 212:1210
213:1328 214:262 215:31 216:3500 217:1145 218:207
219:131 220:392 221:231 222:111
End of report
