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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 18 Feb, 2005
Analysis Summary
----------------
BGP routing table entries examined: 156069
Prefixes after maximum aggregation: 90963
Unique aggregates announced to Internet: 75106
Total ASes present in the Internet Routing Table: 18989
Origin-only ASes present in the Internet Routing Table: 16495
Origin ASes announcing only one prefix: 7732
Transit ASes present in the Internet Routing Table: 2494
Transit-only ASes present in the Internet Routing Table: 81
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: 15
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 11
Number of addresses announced to Internet: 1377206092
Equivalent to 82 /8s, 22 /16s and 127 /24s
Percentage of available address space announced: 37.2
Percentage of allocated address space announced: 58.7
Percentage of available address space allocated: 63.2
Total number of prefixes smaller than registry allocations: 72730
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 31106
Total APNIC prefixes after maximum aggregation: 14973
Prefixes being announced from the APNIC address blocks: 29157
Unique aggregates announced from the APNIC address blocks: 14870
APNIC Region origin ASes present in the Internet Routing Table: 2208
APNIC Region origin ASes announcing only one prefix: 647
APNIC Region transit ASes present in the Internet Routing Table: 327
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 18
Number of APNIC addresses announced to Internet: 174020736
Equivalent to 10 /8s, 95 /16s and 88 /24s
Percentage of available APNIC address space announced: 64.6
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: 87183
Total ARIN prefixes after maximum aggregation: 52458
Prefixes being announced from the ARIN address blocks: 66367
Unique aggregates announced from the ARIN address blocks: 24263
ARIN Region origin ASes present in the Internet Routing Table: 9879
ARIN Region origin ASes announcing only one prefix: 3592
ARIN Region transit ASes present in the Internet Routing Table: 960
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 239204864
Equivalent to 14 /8s, 65 /16s and 250 /24s
Percentage of available ARIN address space announced: 71.3
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: 29581
Total RIPE prefixes after maximum aggregation: 20410
Prefixes being announced from the RIPE address blocks: 26442
Unique aggregates announced from the RIPE address blocks: 17543
RIPE Region origin ASes present in the Internet Routing Table: 6310
RIPE Region origin ASes announcing only one prefix: 3341
RIPE Region transit ASes present in the Internet Routing Table: 1077
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 24
Number of RIPE addresses announced to Internet: 192300608
Equivalent to 11 /8s, 118 /16s and 70 /24s
Percentage of available RIPE address space announced: 67.4
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: 6840
Total LACNIC prefixes after maximum aggregation: 2411
Prefixes being announced from the LACNIC address blocks: 6722
Unique aggregates announced from the LACNIC address blocks: 3998
LACNIC Region origin ASes present in the Internet Routing Table: 419
LACNIC Region origin ASes announcing only one prefix: 127
LACNIC Region transit ASes present in the Internet Routing Table: 80
Average LACNIC Region AS path length visible: 5.0
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 17422336
Equivalent to 1 /8s, 9 /16s and 216 /24s
Percentage of available LACNIC address space announced: 51.9
LACNIC AS Blocks 26592-26623, 27648-28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1344
Total AfriNIC prefixes after maximum aggregation: 711
Prefixes being announced from the AfriNIC address blocks: 905
Unique aggregates announced from the AfriNIC address blocks: 718
AfriNIC Region origin ASes present in the Internet Routing Table: 97
AfriNIC Region origin ASes announcing only one prefix: 25
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: 2176000
Equivalent to 0 /8s, 33 /16s and 52 /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 883 4688 172 Data Communications Bureau
1221 786 1184 561 Telstra Pty Ltd
9583 595 49 15 Satyam Infoway Ltd.,
4766 589 3414 280 Korea Internet Exchange for "
7545 499 86 69 TPG Internet Pty Ltd
4755 456 241 100 Videsh Sanchar Nigam Ltd. Aut
17676 397 5964 65 XTAGE CORPORATION
9443 374 77 79 Primus Telecommunications
9929 351 165 36 China Netcom Corp.
2907 347 1838 322 SINET Japan
17557 327 24 150 Pakistan Telecom
10036 293 27 269 C&M Communication Co. Ltd.
7474 288 299 210 Optus Communications Pty Ltd
703 272 339 213 UUNET
2764 260 238 208 connect.com.au pty ltd
9498 237 81 53 BHARTI BT INTERNET LTD.
9800 237 383 75 CHINA UNICOM
4808 236 170 128 CHINANET core WAN North
4802 231 28 140 Wantree Development
9942 218 71 116 COMindico Australia
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1458 6602 971 AT&T WorldNet Services
721 1147 21835 316 DLA Systems Automation Center
4323 1032 670 220 Time Warner Telecom
701 1028 8308 878 UUNET Technologies, Inc.
1239 953 2880 629 Sprint
6197 865 379 405 BellSouth Network Solutions,
2386 822 511 603 AT&T Data Communications Serv
18566 766 208 6 Covad Communications
209 646 3466 496 Qwest
3356 595 10868 444 Level 3 Communications, LLC
3561 591 2372 418 Cable & Wireless USA
20115 581 484 302 Charter Communications
852 522 1126 397 Telus Advanced Communications
6478 499 823 100 AT&T Worldnet Services
3602 493 120 93 Sprint Canada, Inc.
22773 472 1090 24 Cox Communications, Inc. Atla
6198 464 558 186 BellSouth Network Solutions,
27364 463 43 18 Armstrong Cable Services
5668 450 91 19 Century Telephone
7132 442 8412 382 SBC Internet Services
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 607 2022 504 UUNET - Commercial IP service
3320 296 2992 230 Deutsche Telekom AG
3301 289 1112 277 TeliaNet Sweden
8220 277 466 271 COLT Internet - International
680 253 2041 239 DFN-IP service G-WiN
3246 225 476 220 Song Networks
8708 219 120 198 Romania Data Systems S.A.
13083 217 51 8 Mannesmann Datenverarbeitung
1257 205 708 171 SWIPnet Swedish IP Network
3215 202 1025 80 France Telecom Transpac
5515 186 842 135 Sonera Solution Autonomous Sy
6746 179 47 143 Dynamic Network Technologies,
786 176 1794 176 The JANET IP Service
8866 174 19 20 Bulgarian Telecommunication C
3300 164 185 85 AUCS Communications Services
719 163 322 105 LANLINK autonomous system
3269 163 1424 72 TELECOM ITALIA
25186 141 138 99 France Telecom Transpac's Tra
5400 135 218 119 BT Ignite European Backbone
9051 128 8 33 INCONET Autonomous System
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 361 140 70 ImpSat
8151 336 501 143 UniNet S.A. de C.V.
16814 233 14 6 NSS, S.A.
11172 220 101 55 Servicios Alestra S.A de C.V
6147 189 102 20 Telefonica Del Peru
11664 150 19 24 Keytech SA
7303 146 66 30 Telecom Argentina Stet-France
6505 135 90 91 Global One Communicaoes Ltda
14117 119 7 5 Telefonica del Sur S.A.
6503 116 146 79 AVANTEL, S.A.
11992 107 9 31 Integrated Systems
11556 97 48 3 Cable-Wireless Panama
13999 89 52 9 Mega Cable S.A. de C.V.
14420 87 6 42 ANDINATEL S.A.
11311 86 8 22 Sinectis S.A.
6535 85 7 23 Chilesat Servicios Empresari
10481 82 32 7 Prima S.A.
5639 81 8 8 Telecommunications Services o
4270 79 18 9 Red de Interconexion Universi
15311 78 25 37 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
2905 85 267 77 The Internetworking Company o
20928 84 16 2 Noor Advanced Technologies AS
24835 53 34 6 RAYA Telecom - Egypt
8452 38 20 5 TEDATA
6713 35 54 9 Itissalat Al-MAGHRIB
11845 35 9 11 Data Pro Business Online
9129 32 3 2 UUNET Kenya
12455 30 7 8 Jambonet Autonomous system
5713 27 141 24 Telkom SA Ltd
8524 23 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
21280 16 2 3 Swift Global Kenya Ltd.Is an
15706 15 4 2 Sudatel Internet Exchange Aut
21491 15 1 3 UTL On-line is RF broadband I
15808 14 1 1 Communication Solutions Ltd i
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
721 1147 831 DLA Systems Automation Center
4323 1032 812 Time Warner Telecom
18566 766 760 Covad Communications
4134 883 711 Data Communications Bureau
9583 595 580 Satyam Infoway Ltd.,
6197 865 460 BellSouth Network Solutions,
22773 472 448 Cox Communications, Inc. Atla
27364 463 445 Armstrong Cable Services
5668 450 431 Century Telephone
7545 499 430 TPG Internet Pty Ltd
3602 493 400 Sprint Canada, Inc.
6478 499 399 AT&T Worldnet Services
4755 456 356 Videsh Sanchar Nigam Ltd. Aut
22909 419 345 Comcast Cable Corporation
6467 367 335 E.Spire Communications, Inc.
17676 397 332 XTAGE CORPORATION
1239 953 324 Sprint
9929 351 315 China Netcom Corp.
4766 589 309 Korea Internet Exchange for "
9443 374 295 Primus Telecommunications
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
192.44.0.0/24 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
/13:146 /14:306 /15:561 /16:8301 /17:2406 /18:4109
/19:10071 /20:10700 /21:8508 /22:11774 /23:12983 /24:85247
/25:294 /26:260 /27:101 /28:47 /29:22 /30:85
/31:0 /32:42
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 751 766 Covad Communications
6197 708 865 BellSouth Network Solutions,
7018 630 1458 AT&T WorldNet Services
2386 585 822 AT&T Data Communications Serv
4323 479 1032 Time Warner Telecom
27364 448 463 Armstrong Cable Services
9583 417 595 Satyam Infoway Ltd.,
4766 402 589 Korea Internet Exchange for "
5668 381 450 Century Telephone
702 368 607 UUNET - Commercial IP service
1239 367 953 Sprint
6198 332 464 BellSouth Network Solutions,
10036 293 293 C&M Communication Co. Ltd.
6517 287 309 Yipes Communications, Inc.
9929 276 351 China Netcom Corp.
6467 275 367 E.Spire Communications, Inc.
11456 263 310 Carolina Online, Inc.
13609 256 305 Choice One Communications Inc
25844 245 245 Skadden, Arps, Slate, Meagher
701 241 1028 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 8:10 12:1486 13:1 15:9 16:2
17:3 18:4 20:4 24:735 32:65 33:3
38:95 40:55 44:3 47:2 52:3 55:2
56:3 57:23 59:2 60:14 61:671 62:519
63:1865 64:2594 65:2086 66:2727 67:491 68:500
69:914 70:63 71:3 72:61 80:539 81:509
82:354 83:266 84:128 85:108 128:139 129:165
130:96 131:278 132:37 133:1 134:142 135:30
136:212 137:65 138:180 139:53 140:195 141:101
142:140 143:122 144:256 145:44 146:282 147:100
148:265 149:162 150:95 151:62 152:110 153:79
154:2 155:141 156:70 157:77 158:149 159:164
160:67 161:59 162:419 163:84 164:214 165:158
166:130 167:226 168:400 169:133 170:313 171:9
192:5679 193:3068 194:2256 195:1571 196:633 198:3853
199:3281 200:3962 201:50 202:5213 203:6017 204:3643
205:2012 206:2311 207:2692 208:2084 209:3104 210:1570
211:791 212:1154 213:1272 214:242 215:31 216:3685
217:1088 218:189 219:117 220:369 221:85 222:73
End of report
