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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 16 Mar, 2005
Analysis Summary
----------------
BGP routing table entries examined: 157462
Prefixes after maximum aggregation: 92160
Unique aggregates announced to Internet: 75589
Total ASes present in the Internet Routing Table: 19145
Origin-only ASes present in the Internet Routing Table: 16658
Origin ASes announcing only one prefix: 7780
Transit ASes present in the Internet Routing Table: 2487
Transit-only ASes present in the Internet Routing Table: 79
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: 27
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 13
Number of addresses announced to Internet: 1384752676
Equivalent to 82 /8s, 137 /16s and 166 /24s
Percentage of available address space announced: 37.4
Percentage of allocated address space announced: 59.1
Percentage of available address space allocated: 63.2
Total number of prefixes smaller than registry allocations: 73333
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 31594
Total APNIC prefixes after maximum aggregation: 15138
Prefixes being announced from the APNIC address blocks: 29619
Unique aggregates announced from the APNIC address blocks: 15115
APNIC Region origin ASes present in the Internet Routing Table: 2221
APNIC Region origin ASes announcing only one prefix: 651
APNIC Region transit ASes present in the Internet Routing Table: 329
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 177326528
Equivalent to 10 /8s, 145 /16s and 201 /24s
Percentage of available APNIC address space announced: 65.8
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: 87633
Total ARIN prefixes after maximum aggregation: 53270
Prefixes being announced from the ARIN address blocks: 67023
Unique aggregates announced from the ARIN address blocks: 24367
ARIN Region origin ASes present in the Internet Routing Table: 9932
ARIN Region origin ASes announcing only one prefix: 3595
ARIN Region transit ASes present in the Internet Routing Table: 949
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 21
Number of ARIN addresses announced to Internet: 242471168
Equivalent to 14 /8s, 115 /16s and 209 /24s
Percentage of available ARIN address space announced: 72.3
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: 29939
Total RIPE prefixes after maximum aggregation: 20632
Prefixes being announced from the RIPE address blocks: 26891
Unique aggregates announced from the RIPE address blocks: 17844
RIPE Region origin ASes present in the Internet Routing Table: 6400
RIPE Region origin ASes announcing only one prefix: 3387
RIPE Region transit ASes present in the Internet Routing Table: 1078
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 19
Number of RIPE addresses announced to Internet: 194314960
Equivalent to 11 /8s, 149 /16s and 2 /24s
Percentage of available RIPE address space announced: 68.1
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
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: 6896
Total LACNIC prefixes after maximum aggregation: 2414
Prefixes being announced from the LACNIC address blocks: 6862
Unique aggregates announced from the LACNIC address blocks: 4022
LACNIC Region origin ASes present in the Internet Routing Table: 423
LACNIC Region origin ASes announcing only one prefix: 124
LACNIC Region transit ASes present in the Internet Routing Table: 81
Average LACNIC Region AS path length visible: 5.1
Max LACNIC Region AS path length visible: 21
Number of LACNIC addresses announced to Internet: 17762304
Equivalent to 1 /8s, 15 /16s and 8 /24s
Percentage of available LACNIC address space announced: 52.9
LACNIC AS Blocks 26592-26623, 27648-28671
LACNIC Address Blocks 200/7
Emerging AfriNIC Region Analysis Summary
----------------------------------------
Prefixes being announced by AfriNIC Region ASes: 1373
Total AfriNIC prefixes after maximum aggregation: 706
Prefixes being announced from the AfriNIC address blocks: 905
Unique aggregates announced from the AfriNIC address blocks: 726
AfriNIC Region origin ASes present in the Internet Routing Table: 96
AfriNIC Region origin ASes announcing only one prefix: 23
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: 2185984
Equivalent to 0 /8s, 33 /16s and 91 /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 889 4721 175 Data Communications Bureau
1221 787 1188 558 Telstra Pty Ltd
9583 615 50 27 Satyam Infoway Ltd.,
4766 582 3415 276 Korea Internet Exchange for "
4755 492 241 102 Videsh Sanchar Nigam Ltd. Aut
7545 443 85 56 TPG Internet Pty Ltd
17676 413 6236 75 XTAGE CORPORATION
9443 374 77 79 Primus Telecommunications
9929 359 175 41 China Netcom Corp.
17557 356 25 158 Pakistan Telecom
2907 348 1839 322 SINET Japan
10036 300 27 273 C&M Communication Co. Ltd.
4808 299 245 160 CHINANET core WAN North
7474 288 283 210 Optus Communications Pty Ltd
4802 282 47 166 Wantree Development
703 259 332 216 UUNET
2764 255 237 203 connect.com.au pty ltd
9498 254 82 53 BHARTI BT INTERNET LTD.
9800 239 390 73 CHINA UNICOM
17974 235 63 12 PT TELEKOMUNIKASI INDONESIA
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1468 6563 964 AT&T WorldNet Services
721 1124 21763 314 DLA Systems Automation Center
4323 1068 668 221 Time Warner Telecom
701 1026 8273 875 UUNET Technologies, Inc.
1239 914 2872 662 Sprint
6197 877 383 410 BellSouth Network Solutions,
174 872 5537 756 PSINet Inc.
2386 831 498 614 AT&T Data Communications Serv
18566 774 208 6 Covad Communications
209 636 3474 501 Qwest
20115 583 482 303 Charter Communications
3356 578 10863 429 Level 3 Communications, LLC
3561 557 2373 415 Cable & Wireless USA
852 532 1095 399 Telus Advanced Communications
3602 505 121 93 Sprint Canada, Inc.
6478 500 832 108 AT&T Worldnet Services
22773 483 1122 27 Cox Communications, Inc. Atla
6198 468 567 190 BellSouth Network Solutions,
27364 465 43 18 Armstrong Cable Services
5668 460 115 17 Century Telephone
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 606 2005 496 UUNET - Commercial IP service
3320 294 2992 229 Deutsche Telekom AG
3301 291 1112 279 TeliaNet Sweden
8220 277 466 271 COLT Internet - International
680 254 2041 239 DFN-IP service G-WiN
3246 229 476 223 Song Networks
8708 224 123 202 Romania Data Systems S.A.
13083 218 51 8 Mannesmann Datenverarbeitung
1257 196 710 173 SWIPnet Swedish IP Network
9121 190 235 37 TTnet Autonomous System
5515 177 777 127 Sonera Solution Autonomous Sy
786 176 1794 176 The JANET IP Service
8866 176 20 18 Bulgarian Telecommunication C
3269 165 1456 72 TELECOM ITALIA
6746 163 47 144 Dynamic Network Technologies,
719 158 322 100 LANLINK autonomous system
3300 152 184 85 AUCS Communications Services
5400 146 283 127 BT Ignite European Backbone
6830 143 529 28 UPC Distribution Services
25186 143 138 101 France Telecom Transpac's Tra
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6140 361 140 71 ImpSat
8151 337 489 142 UniNet S.A. de C.V.
16814 233 14 6 NSS, S.A.
11172 216 99 54 Servicios Alestra S.A de C.V
6147 205 102 20 Telefonica Del Peru
11664 148 19 23 Keytech SA
7303 147 67 31 Telecom Argentina Stet-France
6505 135 90 91 Global One Communicaoes Ltda
14117 118 7 5 Telefonica del Sur S.A.
11992 107 9 31 Integrated Systems
6503 102 145 73 AVANTEL, S.A.
13999 100 52 9 Mega Cable S.A. de C.V.
11556 98 49 4 Cable-Wireless Panama
6535 87 7 23 Chilesat Servicios Empresari
11311 86 8 22 Sinectis S.A.
5639 83 12 9 Telecommunications Services o
10481 80 32 7 Prima S.A.
15311 77 24 36 Telefonica Empresas
4270 76 18 9 Red de Interconexion Universi
7738 75 298 16 Telecomunicacoes da Bahia S.A
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 88 16 2 Noor Advanced Technologies AS
2905 84 267 76 The Internetworking Company o
8452 55 20 5 TEDATA
24835 55 34 6 RAYA Telecom - Egypt
12455 41 7 4 Jambonet Autonomous system
9129 39 3 2 UUNET Kenya
6713 35 54 9 Itissalat Al-MAGHRIB
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
15808 16 1 1 Communication Solutions Ltd i
21280 16 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
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1068 847 Time Warner Telecom
721 1124 810 DLA Systems Automation Center
18566 774 768 Covad Communications
4134 889 714 Data Communications Bureau
9583 615 588 Satyam Infoway Ltd.,
6197 877 467 BellSouth Network Solutions,
22773 483 456 Cox Communications, Inc. Atla
27364 465 447 Armstrong Cable Services
5668 460 443 Century Telephone
3602 505 412 Sprint Canada, Inc.
6478 500 392 AT&T Worldnet Services
4755 492 390 Videsh Sanchar Nigam Ltd. Aut
7545 443 387 TPG Internet Pty Ltd
6467 391 358 E.Spire Communications, Inc.
17676 413 338 XTAGE CORPORATION
9929 359 318 China Netcom Corp.
4766 582 306 Korea Internet Exchange for "
9443 374 295 Primus Telecommunications
6140 361 290 ImpSat
20115 583 280 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
65535 PRIVATE 64.111.161.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.162.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.164.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.165.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.167.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.169.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.170.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.171.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.172.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.173.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.174.0/24 33205 KMC Telecom Solution
65535 PRIVATE 64.111.175.0/24 33205 KMC Telecom Solution
64826 PRIVATE 64.200.250.0/23 7911 Williams Communicati
40439 UNALLOCATED 66.194.101.0/24 30439 Memphis Daily News
64500 RESERVED 85.114.96.0/21 1680 NetVision Ltd.
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
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
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 /8:20 /9:3 /10:8 /11:14 /12:62
/13:149 /14:306 /15:573 /16:8324 /17:2456 /18:4182
/19:10106 /20:10801 /21:8686 /22:12016 /23:13165 /24:85770
/25:260 /26:252 /27:103 /28:53 /29:26 /30:85
/31:0 /32:42
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 759 774 Covad Communications
6197 718 877 BellSouth Network Solutions,
7018 639 1468 AT&T WorldNet Services
2386 587 831 AT&T Data Communications Serv
4323 491 1068 Time Warner Telecom
27364 450 465 Armstrong Cable Services
9583 438 615 Satyam Infoway Ltd.,
4766 399 582 Korea Internet Exchange for "
5668 383 460 Century Telephone
1239 376 914 Sprint
702 369 606 UUNET - Commercial IP service
6198 335 468 BellSouth Network Solutions,
10036 300 300 C&M Communication Co. Ltd.
6467 292 391 E.Spire Communications, Inc.
6517 289 311 Yipes Communications, Inc.
9929 282 359 China Netcom Corp.
7011 277 326 Citizens Utilities
11456 263 310 Carolina Online, Inc.
701 248 1026 UUNET Technologies, Inc.
13609 246 291 Choice One Communications Inc
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 8:11 12:1500 13:1 15:9 16:2
17:3 18:4 20:5 24:740 32:64 33:5
38:100 40:55 44:3 47:2 52:3 55:2
56:3 57:24 58:3 59:7 60:21 61:736
62:519 63:1881 64:2615 65:2066 66:2726 67:507
68:506 69:920 70:69 71:5 72:104 80:538
81:501 82:344 83:242 84:130 85:166 128:148
129:159 130:89 131:282 132:41 133:1 134:142
135:33 136:190 137:66 138:157 139:50 140:199
141:103 142:139 143:130 144:172 145:45 146:281
147:98 148:293 149:164 150:97 151:63 152:110
153:85 154:3 155:142 156:68 157:85 158:165
159:168 160:72 161:60 162:203 163:86 164:215
165:156 166:127 167:229 168:407 169:133 170:311
171:8 172:1 192:5653 193:3111 194:2294 195:1595
196:635 198:3916 199:3260 200:4011 201:57 202:5310
203:6055 204:3705 205:2030 206:2361 207:2706 208:2062
209:3176 210:1608 211:802 212:1166 213:1253 214:242
215:31 216:3648 217:1104 218:190 219:113 220:369
221:109 222:76
End of report
