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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 20 Apr, 2005
Analysis Summary
----------------
BGP routing table entries examined: 160169
Prefixes after maximum aggregation: 93268
Unique aggregates announced to Internet: 77096
Total ASes present in the Internet Routing Table: 19443
Origin-only ASes present in the Internet Routing Table: 16914
Origin ASes announcing only one prefix: 7931
Transit ASes present in the Internet Routing Table: 2529
Transit-only ASes present in the Internet Routing Table: 71
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 25
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: 1383698240
Equivalent to 82 /8s, 121 /16s and 143 /24s
Percentage of available address space announced: 37.3
Percentage of allocated address space announced: 58.6
Percentage of available address space allocated: 63.7
Total number of prefixes smaller than registry allocations: 74874
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 32635
Total APNIC prefixes after maximum aggregation: 15393
Prefixes being announced from the APNIC address blocks: 30570
Unique aggregates announced from the APNIC address blocks: 15444
APNIC Region origin ASes present in the Internet Routing Table: 2246
APNIC Region origin ASes announcing only one prefix: 659
APNIC Region transit ASes present in the Internet Routing Table: 343
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 181785984
Equivalent to 10 /8s, 213 /16s and 213 /24s
Percentage of available APNIC address space announced: 67.5
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: 87153
Total ARIN prefixes after maximum aggregation: 53160
Prefixes being announced from the ARIN address blocks: 67928
Unique aggregates announced from the ARIN address blocks: 24952
ARIN Region origin ASes present in the Internet Routing Table: 9863
ARIN Region origin ASes announcing only one prefix: 3582
ARIN Region transit ASes present in the Internet Routing Table: 930
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 21
Number of ARIN addresses announced to Internet: 246112512
Equivalent to 14 /8s, 171 /16s and 97 /24s
Percentage of available ARIN address space announced: 69.9
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: 30390
Total RIPE prefixes after maximum aggregation: 21018
Prefixes being announced from the RIPE address blocks: 27419
Unique aggregates announced from the RIPE address blocks: 18318
RIPE Region origin ASes present in the Internet Routing Table: 6557
RIPE Region origin ASes announcing only one prefix: 3470
RIPE Region transit ASes present in the Internet Routing Table: 1096
Average RIPE Region AS path length visible: 5.2
Max RIPE Region AS path length visible: 25
Number of RIPE addresses announced to Internet: 201416128
Equivalent to 12 /8s, 1 /16s and 93 /24s
Percentage of available RIPE address space announced: 70.6
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: 8546
Total LACNIC prefixes after maximum aggregation: 2990
Prefixes being announced from the LACNIC address blocks: 6965
Unique aggregates announced from the LACNIC address blocks: 4027
LACNIC Region origin ASes present in the Internet Routing Table: 609
LACNIC Region origin ASes announcing only one prefix: 193
LACNIC Region transit ASes present in the Internet Routing Table: 115
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 21
Number of LACNIC addresses announced to Internet: 18134016
Equivalent to 1 /8s, 20 /16s and 180 /24s
Percentage of available LACNIC address space announced: 54.0
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: 1428
Total AfriNIC prefixes after maximum aggregation: 707
Prefixes being announced from the AfriNIC address blocks: 926
Unique aggregates announced from the AfriNIC address blocks: 734
AfriNIC Region origin ASes present in the Internet Routing Table: 100
AfriNIC Region origin ASes announcing only one prefix: 27
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: 13
Number of AfriNIC addresses announced to Internet: 2206720
Equivalent to 0 /8s, 33 /16s and 172 /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 901 5101 182 CHINANET-BACKBONE
1221 774 1193 551 Telstra Pty Ltd
9583 711 52 63 Sify Limited
4766 586 3415 275 Korea Telecom (KIX)
4755 543 243 112 Videsh Sanchar Nigam Ltd. Aut
7545 482 86 68 TPG Internet Pty Ltd
17676 430 6508 72 Softbank BB Corp.
9443 369 77 75 Primus Telecommunications
9929 358 175 45 China Netcom Corp.
2907 345 1838 319 SINET Japan
17557 334 24 154 Pakistan Telecom
10036 313 28 284 C&M Communication Co. Ltd.
4808 311 251 169 CNCGROUP IP network: China169
7474 299 268 210 SingTel Optus Pty Ltd
9498 288 82 52 BHARTI BT INTERNET LTD.
4802 279 47 164 Wantree Development
2764 260 238 198 AAPT Limited
703 257 279 211 UUNET - Commercial IP service
9800 242 386 69 CHINA UNICOM
17974 239 65 13 PT TELEKOMUNIKASI INDONESIA
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1477 6514 960 AT&T WorldNet Services
174 1140 5589 973 Cogent Communications
721 1118 21763 314 DLA Systems Automation Center
4323 1096 663 220 Time Warner Telecom
701 1003 8281 855 UUNET Technologies, Inc.
1239 915 2877 662 Sprint
6197 889 382 412 BellSouth Network Solutions,
2386 845 532 626 AT&T Data Communications Serv
18566 791 224 7 Covad Communications
209 645 3475 497 Qwest
20115 606 501 312 Charter Communications
3356 584 10836 438 Level 3 Communications, LLC
3561 546 2369 414 Savvis
852 532 1095 393 Telus Advanced Communications
27364 517 43 18 Armstrong Cable Services
3602 507 121 91 Sprint Canada, Inc.
5668 489 115 25 CenturyTel Internet Holdings,
22773 477 1188 21 Cox Communications, Inc.
6198 461 439 205 BellSouth Network Solutions,
7132 441 8654 378 SBC Internet Services
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 295 1116 285 TeliaNet Sweden
8220 278 472 271 COLT Telecommunications
680 253 2041 238 DFN-IP service G-WiN
3246 232 491 227 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 163 21 12 Bulgarian Telecommunication C
6746 161 47 141 Dynamic Network Technologies,
719 159 340 101 LANLINK autonomous system
3300 151 184 84 AUCS Communications Services
5400 147 286 130 BT Ignite European Backbone
25186 139 137 97 France Telecom Transpac's Tra
6830 138 513 27 UPC Distribution Services
9051 128 8 34 INCONET Autonomous System
2856 127 2305 115 BTnet UK Regional network
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 354 533 147 UniNet S.A. de C.V.
16814 265 16 7 NSS, S.A.
11172 222 99 54 Servicios Alestra S.A de C.V
19632 190 14 7 Metropolis Intercom S.A.
6147 182 102 20 Telefonica Del Peru
11664 153 19 23 Keytech SA
7303 148 68 21 Telecom Argentina Stet-France
6505 131 90 88 Global One Communicaoes Ltda
22047 123 96 6 VTR PUNTO NET S.A.
14117 119 8 4 Telefonica del Sur S.A.
18822 104 7 16 TELEFONICA MANQUEHUE
6503 103 146 74 AVANTEL, S.A.
13999 102 52 9 Mega Cable S.A. de C.V.
10481 101 40 7 Prima S.A.
11556 99 49 5 Cable-Wireless Panama
19169 95 6 17 Telconet
11311 85 8 21 Sinectis S.A.
5639 84 12 9 Telecommunications Services o
23216 84 24 22 RAMtelecom Telecomunicaciones
4270 79 18 9 Red de Interconexion Universi
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 268 635 225 The Internet Solution
5536 119 15 17 Internet Egypt Network
2018 90 295 87 Tertiary Education Network
20928 90 16 2 Noor Advanced Technologies AS
2905 75 267 69 The Internetworking Company o
8452 64 20 5 TEDATA
24835 59 34 6 RAYA Telecom - Egypt
9129 43 3 3 UUNET Kenya
12455 43 7 4 Jambonet Autonomous system
5713 35 141 28 Telkom SA Ltd
6713 35 54 9 Itissalat Al-MAGHRIB
8524 25 1 4 AUCEGYPT Autonomous System
15475 23 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
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
15706 15 4 2 Sudatel Internet Exchange Aut
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
0 0 65531 *
4323 1096 876 Time Warner Telecom
721 1118 804 DLA Systems Automation Center
18566 791 784 Covad Communications
4134 901 719 CHINANET-BACKBONE
9583 711 648 Sify Limited
27364 517 499 Armstrong Cable Services
6197 889 477 BellSouth Network Solutions,
5668 489 464 CenturyTel Internet Holdings,
22773 477 456 Cox Communications, Inc.
4755 543 431 Videsh Sanchar Nigam Ltd. Aut
3602 507 416 Sprint Canada, Inc.
7545 482 414 TPG Internet Pty Ltd
6467 440 405 E.Spire Communications, Inc.
17676 430 358 Softbank BB Corp.
6140 399 327 ImpSat
9929 358 313 China Netcom Corp.
4766 586 311 Korea Telecom (KIX)
20115 606 294 Charter Communications
9443 369 294 Primus Telecommunications
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 /12:68
/13:152 /14:308 /15:583 /16:8372 /17:2520 /18:4318
/19:10212 /20:10947 /21:8861 /22:12189 /23:13219 /24:87482
/25:284 /26:263 /27:141 /28:74 /29:37 /30:66
/31:0 /32:29
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 775 791 Covad Communications
6197 732 889 BellSouth Network Solutions,
7018 663 1477 AT&T WorldNet Services
2386 599 845 AT&T Data Communications Serv
9583 531 711 Sify Limited
4323 514 1096 Time Warner Telecom
27364 505 517 Armstrong Cable Services
5668 407 489 CenturyTel Internet Holdings,
4766 402 586 Korea Telecom (KIX)
1239 383 915 Sprint
702 365 598 UUNET - Commercial IP service
6198 336 461 BellSouth Network Solutions,
6467 321 440 E.Spire Communications, Inc.
10036 313 313 C&M Communication Co. Ltd.
7011 295 344 Citizens Utilities
6517 294 317 Yipes Communications, Inc.
9929 282 358 China Netcom Corp.
11456 271 318 Carolina Online, Inc.
15270 254 274 PaeTec.net -a division of Pae
174 249 1140 Cogent Communications
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:4 8:11 12:1522 13:1 15:9 16:2
17:3 18:4 20:4 24:844 32:69 33:4
38:108 40:53 44:3 47:2 52:4 55:2
56:3 57:24 58:41 59:25 60:20 61:756
62:580 63:1880 64:2664 65:2084 66:2774 67:544
68:514 69:976 70:90 71:6 72:138 80:550
81:533 82:376 83:228 84:147 85:163 128:147
129:157 130:88 131:280 132:35 133:1 134:150
135:41 136:187 137:66 138:172 139:56 140:187
141:106 142:138 143:130 144:171 145:32 146:281
147:103 148:292 149:169 150:98 151:63 152:107
153:87 154:5 155:143 156:77 157:88 158:167
159:172 160:73 161:60 162:202 163:83 164:205
165:175 166:155 167:232 168:416 169:139 170:312
171:8 172:2 192:5703 193:3162 194:2328 195:1558
196:640 198:3938 199:3281 200:3975 201:114 202:5456
203:6121 204:3814 205:2025 206:2457 207:2753 208:2085
209:3287 210:1690 211:840 212:1194 213:1281 214:273
215:32 216:3587 217:1135 218:187 219:106 220:359
221:192 222:86
End of report
