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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 08 Mar, 2005
Analysis Summary
----------------
BGP routing table entries examined: 157131
Prefixes after maximum aggregation: 91839
Unique aggregates announced to Internet: 75749
Total ASes present in the Internet Routing Table: 19100
Origin-only ASes present in the Internet Routing Table: 16622
Origin ASes announcing only one prefix: 7752
Transit ASes present in the Internet Routing Table: 2478
Transit-only ASes present in the Internet Routing Table: 80
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 21
Prefixes from unregistered ASNs in the Routing Table: 15
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 12
Number of addresses announced to Internet: 1381583908
Equivalent to 82 /8s, 89 /16s and 76 /24s
Percentage of available address space announced: 37.3
Percentage of allocated address space announced: 58.9
Percentage of available address space allocated: 63.2
Total number of prefixes smaller than registry allocations: 73181
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 31444
Total APNIC prefixes after maximum aggregation: 15132
Prefixes being announced from the APNIC address blocks: 29483
Unique aggregates announced from the APNIC address blocks: 15081
APNIC Region origin ASes present in the Internet Routing Table: 2218
APNIC Region origin ASes announcing only one prefix: 651
APNIC Region transit ASes present in the Internet Routing Table: 330
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 176199616
Equivalent to 10 /8s, 128 /16s and 151 /24s
Percentage of available APNIC address space announced: 65.4
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
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: 87588
Total ARIN prefixes after maximum aggregation: 53043
Prefixes being announced from the ARIN address blocks: 66829
Unique aggregates announced from the ARIN address blocks: 24490
ARIN Region origin ASes present in the Internet Routing Table: 9919
ARIN Region origin ASes announcing only one prefix: 3585
ARIN Region transit ASes present in the Internet Routing Table: 944
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 21
Number of ARIN addresses announced to Internet: 240333568
Equivalent to 14 /8s, 83 /16s and 51 /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, 29696-30719, 31744-33791
ARIN Address Blocks 24/8, 63/8, 64/6, 68/7, 70/7, 72/8, 198/7, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 29843
Total RIPE prefixes after maximum aggregation: 20548
Prefixes being announced from the RIPE address blocks: 26781
Unique aggregates announced from the RIPE address blocks: 17764
RIPE Region origin ASes present in the Internet Routing Table: 6369
RIPE Region origin ASes announcing only one prefix: 3366
RIPE Region transit ASes present in the Internet Routing Table: 1069
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 17
Number of RIPE addresses announced to Internet: 193645136
Equivalent to 11 /8s, 138 /16s and 202 /24s
Percentage of available RIPE address space announced: 67.9
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
30720-31743, 33792-34815
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: 6877
Total LACNIC prefixes after maximum aggregation: 2411
Prefixes being announced from the LACNIC address blocks: 6823
Unique aggregates announced from the LACNIC address blocks: 4025
LACNIC Region origin ASes present in the Internet Routing Table: 423
LACNIC Region origin ASes announcing only one prefix: 126
LACNIC Region transit ASes present in the Internet Routing Table: 82
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 17680128
Equivalent to 1 /8s, 13 /16s and 199 /24s
Percentage of available LACNIC address space announced: 52.7
LACNIC AS Blocks 26592-26623, 27648-28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1364
Total AfriNIC prefixes after maximum aggregation: 705
Prefixes being announced from the AfriNIC address blocks: 897
Unique aggregates announced from the AfriNIC address blocks: 715
AfriNIC Region origin ASes present in the Internet Routing Table: 96
AfriNIC Region origin ASes announcing only one prefix: 24
AfriNIC Region transit ASes present in the Internet Routing Table: 14
Average AfriNIC Region AS path length visible: 4.5
Max AfriNIC Region AS path length visible: 12
Number of AfriNIC addresses announced to Internet: 2177536
Equivalent to 0 /8s, 33 /16s and 58 /24s
Percentage of available AfriNIC address space announced: 13.0
AfriNIC AS Blocks <none>
AfriNIC Address Blocks 196/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4134 887 4720 175 Data Communications Bureau
1221 787 1188 559 Telstra Pty Ltd
9583 606 49 19 Satyam Infoway Ltd.,
4766 589 3416 279 Korea Internet Exchange for "
4755 488 241 103 Videsh Sanchar Nigam Ltd. Aut
7545 475 86 75 TPG Internet Pty Ltd
17676 405 6108 70 XTAGE CORPORATION
9443 374 77 79 Primus Telecommunications
9929 361 167 39 China Netcom Corp.
2907 348 1839 322 SINET Japan
17557 328 25 155 Pakistan Telecom
10036 300 27 273 C&M Communication Co. Ltd.
7474 288 283 210 Optus Communications Pty Ltd
4802 275 47 159 Wantree Development
703 272 355 214 UUNET
2764 255 237 203 connect.com.au pty ltd
9498 247 81 54 BHARTI BT INTERNET LTD.
4808 242 234 130 CHINANET core WAN North
9800 238 390 72 CHINA UNICOM
17974 228 63 12 PT TELEKOMUNIKASI INDONESIA
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1467 6576 965 AT&T WorldNet Services
721 1125 21763 314 DLA Systems Automation Center
4323 1052 668 219 Time Warner Telecom
701 1031 8290 876 UUNET Technologies, Inc.
1239 926 2872 659 Sprint
6197 872 382 409 BellSouth Network Solutions,
2386 822 498 609 AT&T Data Communications Serv
18566 773 208 6 Covad Communications
174 769 5530 672 PSINet Inc.
209 638 3466 501 Qwest
3356 581 10863 431 Level 3 Communications, LLC
20115 579 478 300 Charter Communications
3561 560 2373 415 Cable & Wireless USA
852 531 1095 400 Telus Advanced Communications
6478 499 831 101 AT&T Worldnet Services
3602 498 120 93 Sprint Canada, Inc.
22773 476 1090 24 Cox Communications, Inc. Atla
6198 467 540 196 BellSouth Network Solutions,
27364 465 43 18 Armstrong Cable Services
5668 457 93 22 Century Telephone
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 609 2006 499 UUNET - Commercial IP service
3320 294 2992 229 Deutsche Telekom AG
3301 290 1112 278 TeliaNet Sweden
8220 276 466 269 COLT Internet - International
680 254 2041 239 DFN-IP service G-WiN
3246 228 472 223 Song Networks
8708 222 121 200 Romania Data Systems S.A.
13083 218 51 8 Mannesmann Datenverarbeitung
3215 206 1058 80 France Telecom Transpac
1257 196 708 173 SWIPnet Swedish IP Network
5515 187 842 135 Sonera Solution Autonomous Sy
786 176 1794 176 The JANET IP Service
8866 175 20 18 Bulgarian Telecommunication C
3269 165 1456 72 TELECOM ITALIA
3300 164 185 84 AUCS Communications Services
9121 164 230 28 TTnet Autonomous System
6746 162 47 143 Dynamic Network Technologies,
719 158 322 100 LANLINK autonomous system
6830 142 529 28 UPC Distribution Services
25186 142 138 100 France Telecom Transpac's Tra
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 360 140 70 ImpSat
8151 337 505 142 UniNet S.A. de C.V.
16814 233 14 6 NSS, S.A.
11172 221 99 54 Servicios Alestra S.A de C.V
6147 205 102 20 Telefonica Del Peru
11664 148 19 23 Keytech SA
7303 146 66 30 Telecom Argentina Stet-France
6505 136 90 92 Global One Communicaoes Ltda
6503 114 145 75 AVANTEL, S.A.
11992 107 9 31 Integrated Systems
14117 103 7 8 Telefonica del Sur S.A.
11556 97 48 3 Cable-Wireless Panama
13999 93 52 9 Mega Cable S.A. de C.V.
11311 88 8 23 Sinectis S.A.
6535 87 7 23 Chilesat Servicios Empresari
5639 83 12 9 Telecommunications Services o
10481 79 32 7 Prima S.A.
10292 78 6 20 TELECOMMUNICATIONS OF JAMAICA
4270 77 18 9 Red de Interconexion Universi
15311 77 24 36 Telefonica Empresas
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 268 635 225 The Internet Solution
5536 114 15 18 Internet Egypt Network
2018 90 295 87 Tertiary Education Network
20928 87 16 2 Noor Advanced Technologies AS
2905 84 267 76 The Internetworking Company o
24835 55 34 6 RAYA Telecom - Egypt
8452 54 20 5 TEDATA
9129 39 3 2 UUNET Kenya
6713 35 54 9 Itissalat Al-MAGHRIB
12455 30 7 4 Jambonet Autonomous system
5713 27 141 24 Telkom SA Ltd
8524 24 1 4 AUCEGYPT Autonomous System
16637 22 10 19 Johnnic e-Ventures
10798 19 1 11 Standard Bank of South Africa
12258 18 3 12 Vodacom Internet Company
8346 17 10 11 SONATEL-AS Autonomous System
21280 17 2 3 Swift Global Kenya Ltd.Is an
21491 16 1 3 UTL On-line is RF broadband I
15706 15 4 2 Sudatel Internet Exchange Aut
15808 14 1 1 Communication Solutions Ltd i
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1052 833 Time Warner Telecom
721 1125 811 DLA Systems Automation Center
18566 773 767 Covad Communications
4134 887 712 Data Communications Bureau
9583 606 587 Satyam Infoway Ltd.,
6197 872 463 BellSouth Network Solutions,
22773 476 452 Cox Communications, Inc. Atla
27364 465 447 Armstrong Cable Services
5668 457 435 Century Telephone
3602 498 405 Sprint Canada, Inc.
7545 475 400 TPG Internet Pty Ltd
6478 499 398 AT&T Worldnet Services
4755 488 385 Videsh Sanchar Nigam Ltd. Aut
17676 405 335 XTAGE CORPORATION
6467 359 326 E.Spire Communications, Inc.
9929 361 322 China Netcom Corp.
4766 589 310 Korea Internet Exchange for "
9443 374 295 Primus Telecommunications
6140 360 290 ImpSat
20115 579 279 Charter Communications
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
25695 UNALLOCATED 64.57.112.0/20 5713 Telkom SA Ltd
64826 PRIVATE 64.200.250.0/23 7911 Williams Communicati
40439 UNALLOCATED 66.194.101.0/24 30439 Memphis Daily News
65503 PRIVATE 193.125.183.0/24 3217 SIMBIRSK
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
65535 PRIVATE 204.10.155.0/24 33205 KMC Telecom Solution
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
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 /8:19 /9:3 /10:8 /11:14 /12:62
/13:148 /14:306 /15:567 /16:8307 /17:2440 /18:4163
/19:10101 /20:10773 /21:8629 /22:11949 /23:13078 /24:85752
/25:259 /26:248 /27:105 /28:51 /29:25 /30:86
/31:0 /32:38
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 758 773 Covad Communications
6197 714 872 BellSouth Network Solutions,
7018 636 1467 AT&T WorldNet Services
2386 584 822 AT&T Data Communications Serv
4323 484 1052 Time Warner Telecom
27364 450 465 Armstrong Cable Services
9583 430 606 Satyam Infoway Ltd.,
4766 405 589 Korea Internet Exchange for "
5668 383 457 Century Telephone
1239 373 926 Sprint
702 371 609 UUNET - Commercial IP service
6198 336 467 BellSouth Network Solutions,
10036 300 300 C&M Communication Co. Ltd.
6517 287 309 Yipes Communications, Inc.
9929 286 361 China Netcom Corp.
6467 270 359 E.Spire Communications, Inc.
11456 263 310 Carolina Online, Inc.
13609 257 306 Choice One Communications Inc
701 247 1031 UUNET Technologies, Inc.
25844 245 245 Skadden, Arps, Slate, Meagher
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 8:10 12:1488 13:1 15:9 16:2
17:3 18:4 20:5 24:737 32:64 33:4
38:98 40:55 44:3 47:2 52:3 55:2
56:3 57:24 58:2 59:5 60:21 61:710
62:517 63:1880 64:2569 65:2054 66:2716 67:524
68:503 69:901 70:70 71:4 72:93 80:545
81:531 82:335 83:264 84:132 85:158 128:137
129:161 130:86 131:274 132:35 133:1 134:142
135:30 136:189 137:66 138:157 139:53 140:197
141:102 142:139 143:129 144:175 145:45 146:279
147:100 148:279 149:164 150:96 151:63 152:110
153:85 154:3 155:142 156:69 157:83 158:154
159:168 160:72 161:60 162:427 163:85 164:209
165:163 166:129 167:228 168:400 169:133 170:311
171:9 192:5663 193:3118 194:2281 195:1585 196:627
198:3897 199:3308 200:3993 201:54 202:5226 203:6076
204:3680 205:2025 206:2346 207:2723 208:2086 209:3157
210:1595 211:802 212:1162 213:1262 214:243 215:31
216:3662 217:1092 218:190 219:139 220:366 221:94
222:75
End of report
