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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sun 21 Aug, 2005
Analysis Summary
----------------
BGP routing table entries examined: 168319
Prefixes after maximum aggregation: 96800
Unique aggregates announced to Internet: 81561
Total ASes present in the Internet Routing Table: 20326
Origin-only ASes present in the Internet Routing Table: 17693
Origin ASes announcing only one prefix: 8372
Transit ASes present in the Internet Routing Table: 2633
Transit-only ASes present in the Internet Routing Table: 76
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 26
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: 13
Number of addresses announced to Internet: 1406522913
Equivalent to 83 /8s, 213 /16s and 214 /24s
Percentage of available address space announced: 37.9
Percentage of allocated address space announced: 57.1
Percentage of available address space allocated: 66.4
Total number of prefixes smaller than registry allocations: 79776
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 34999
Total APNIC prefixes after maximum aggregation: 15754
Prefixes being announced from the APNIC address blocks: 32862
Unique aggregates announced from the APNIC address blocks: 16361
APNIC Region origin ASes present in the Internet Routing Table: 2331
APNIC Region origin ASes announcing only one prefix: 690
APNIC Region transit ASes present in the Internet Routing Table: 352
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 18
Number of APNIC addresses announced to Internet: 192775552
Equivalent to 11 /8s, 125 /16s and 133 /24s
Percentage of available APNIC address space announced: 71.5
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: 89978
Total ARIN prefixes after maximum aggregation: 54860
Prefixes being announced from the ARIN address blocks: 70369
Unique aggregates announced from the ARIN address blocks: 26113
ARIN Region origin ASes present in the Internet Routing Table: 10158
ARIN Region origin ASes announcing only one prefix: 3744
ARIN Region transit ASes present in the Internet Routing Table: 954
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 20
Number of ARIN addresses announced to Internet: 259653921
Equivalent to 15 /8s, 122 /16s and 1 /24s
Percentage of available ARIN address space announced: 64.5
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: 32438
Total RIPE prefixes after maximum aggregation: 22224
Prefixes being announced from the RIPE address blocks: 29451
Unique aggregates announced from the RIPE address blocks: 19877
RIPE Region origin ASes present in the Internet Routing Table: 7005
RIPE Region origin ASes announcing only one prefix: 3703
RIPE Region transit ASes present in the Internet Routing Table: 1159
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 26
Number of RIPE addresses announced to Internet: 215198592
Equivalent to 12 /8s, 211 /16s and 171 /24s
Percentage of available RIPE address space announced: 64.1
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, 88/6, 188/8, 193/8, 194/7, 212/7
and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 9227
Total LACNIC prefixes after maximum aggregation: 3177
Prefixes being announced from the LACNIC address blocks: 7576
Unique aggregates announced from the LACNIC address blocks: 4402
LACNIC Region origin ASes present in the Internet Routing Table: 631
LACNIC Region origin ASes announcing only one prefix: 197
LACNIC Region transit ASes present in the Internet Routing Table: 116
Average LACNIC Region AS path length visible: 5.2
Max LACNIC Region AS path length visible: 23
Number of LACNIC addresses announced to Internet: 21532416
Equivalent to 1 /8s, 72 /16s and 143 /24s
Percentage of available LACNIC address space announced: 32.1
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: 1656
Total AfriNIC prefixes after maximum aggregation: 785
Prefixes being announced from the AfriNIC address blocks: 1012
Unique aggregates announced from the AfriNIC address blocks: 777
AfriNIC Region origin ASes present in the Internet Routing Table: 132
AfriNIC Region origin ASes announcing only one prefix: 38
AfriNIC Region transit ASes present in the Internet Routing Table: 16
Average AfriNIC Region AS path length visible: 4.6
Max AfriNIC Region AS path length visible: 17
Number of AfriNIC addresses announced to Internet: 2613248
Equivalent to 0 /8s, 39 /16s and 224 /24s
Percentage of available AfriNIC address space announced: 7.8
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 963 5524 194 CHINANET-BACKBONE
1221 758 1327 527 Telstra Pty Ltd
9583 756 77 14 Sify Limited
4755 699 259 65 Videsh Sanchar Nigam Ltd. Aut
4766 597 3414 281 Korea Telecom (KIX)
7545 520 108 74 TPG Internet Pty Ltd
17676 465 6739 99 Softbank BB Corp.
9443 382 82 77 Primus Telecommunications
9498 341 83 61 BHARTI BT INTERNET LTD.
9929 338 224 46 China Netcom Corp.
2907 337 1789 314 SINET Japan
17557 326 24 151 Pakistan Telecom
7474 315 257 218 SingTel Optus Pty Ltd
17488 308 18 8 Hathway IP Over Cable Interne
18302 299 109 156 SK Global co., Ltd
4802 296 53 157 Wantree Development
9837 277 80 179 Powertel Ltd
703 255 262 206 UUNET - Commercial IP service
17974 254 65 14 PT TELEKOMUNIKASI INDONESIA
9800 250 390 64 CHINA UNICOM
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1518 6393 983 AT&T WorldNet Services
4323 1151 704 221 Time Warner Telecom
174 1115 5820 1026 Cogent Communications
721 1093 21907 315 DLA Systems Automation Center
701 1004 8154 854 UUNET Technologies, Inc.
6197 942 498 450 BellSouth Network Solutions,
2386 898 543 654 AT&T Data Communications Serv
1239 857 2847 623 Sprint
18566 834 224 7 Covad Communications
20115 643 503 325 Charter Communications
209 627 3470 490 Qwest
3356 577 10662 446 Level 3 Communications, LLC
27364 554 44 18 Armstrong Cable Services
3602 548 125 106 Sprint Canada, Inc.
3561 531 2416 421 Savvis
22773 523 1352 27 Cox Communications, Inc.
5668 501 115 23 CenturyTel Internet Holdings,
6198 471 414 226 BellSouth Network Solutions,
7132 455 4948 389 SBC Internet Services
19262 446 1353 119 Verizon Global Networks
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 593 1999 484 UUNET - Commercial IP service
3301 299 1081 285 TeliaNet Sweden
3320 291 3232 240 Deutsche Telekom AG
8220 262 474 258 COLT Telecommunications
680 245 2041 241 DFN-IP service G-WiN
3246 230 469 223 Song Networks
8708 227 261 213 Romania Data Systems S.A.
1257 198 713 176 SWIPnet Swedish IP Network
5515 181 778 127 Sonera Solution Autonomous Sy
6746 181 49 157 Dynamic Network Technologies,
786 174 1794 174 The JANET IP Service
3269 169 1518 71 TELECOM ITALIA
5400 166 289 140 BT Ignite European Backbone
9121 166 278 42 TTnet Autonomous System
8866 163 20 7 Bulgarian Telecommunication C
3300 155 184 89 AUCS Communications Services
6830 154 665 32 UPC Distribution Services
25186 144 145 101 France Telecom Transpac's Tra
8551 138 120 20 Bezeq International
1273 137 174 96 Cable & Wireless Deutschland
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 390 608 165 UniNet S.A. de C.V.
16814 265 16 7 NSS, S.A.
11172 242 99 57 Servicios Alestra S.A de C.V
6147 193 110 21 Telefonica Del Peru
11664 190 20 23 Keytech SA
14117 152 9 5 Telefonica del Sur S.A.
22047 144 128 7 VTR PUNTO NET S.A.
7303 143 68 15 Telecom Argentina Stet-France
19632 143 14 5 Metropolis Intercom S.A.
11556 131 64 3 Cable-Wireless Panama
6505 130 90 87 Global One Communicaoes Ltda
19169 120 8 26 Telconet
6503 113 147 74 AVANTEL, S.A.
18822 110 7 14 TELEFONICA MANQUEHUE
13999 109 52 9 Mega Cable S.A. de C.V.
10481 104 48 8 Prima S.A.
21826 103 13 15 INTERCABLE
5639 101 12 9 Telecommunications Services o
11311 97 8 14 Sinectis S.A.
23216 95 24 20 RAMtelecom Telecomunicaciones
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 264 685 222 The Internet Solution
5536 124 16 15 Internet Egypt Network
8452 104 32 7 TEDATA
2018 96 295 87 Tertiary Education Network
2905 76 266 68 The Internetworking Company o
20928 57 16 2 Noor Advanced Technologies AS
24835 57 34 6 RAYA Telecom - Egypt
6713 51 54 8 Itissalat Al-MAGHRIB
15475 48 84 4 Nile Online
9129 42 3 3 UUNET Kenya
5713 41 149 32 Telkom SA Ltd
15706 31 8 3 Sudatel Internet Exchange Aut
12455 30 5 6 Jambonet Autonomous system
8524 24 1 4 AUCEGYPT Autonomous System
16637 22 10 19 Johnnic e-Ventures
10798 21 1 12 Standard Bank of South Africa
23889 20 5 9 MAURITIUS TELECOM
12258 17 3 11 Vodacom Internet Company
15804 17 2 1 AS of The Way Out Internet So
15808 17 2 2 Communication Solutions Ltd i
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1151 930 Time Warner Telecom
18566 834 827 Covad Communications
721 1093 778 DLA Systems Automation Center
4134 963 769 CHINANET-BACKBONE
9583 756 742 Sify Limited
4755 699 634 Videsh Sanchar Nigam Ltd. Aut
27364 554 536 Armstrong Cable Services
22773 523 496 Cox Communications, Inc.
6197 942 492 BellSouth Network Solutions,
5668 501 478 CenturyTel Internet Holdings,
7545 520 446 TPG Internet Pty Ltd
3602 548 442 Sprint Canada, Inc.
17676 465 366 Softbank BB Corp.
6467 435 362 E.Spire Communications, Inc.
19262 446 327 Verizon Global Networks
20115 643 318 Charter Communications
4766 597 316 Korea Telecom (KIX)
11492 317 311 Cable One
9443 382 305 Primus Telecommunications
17488 308 300 Hathway IP Over Cable Interne
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
64826 PRIVATE 64.200.250.0/23 7911 Williams Communicati
65511 PRIVATE 65.77.145.0/24 16605 Aaro Broadband Wirel
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
64943 PRIVATE 202.41.14.0/24 24110 Security Mail Pty Lt
64942 PRIVATE 202.41.15.0/24 24110 Security Mail Pty Lt
24413 UNALLOCATED 202.46.32.0/19 17623 China Netcom Corp.
65005 PRIVATE 203.200.197.0/24 4755 Videsh Sanchar Nigam
63946 RESERVED 204.222.174.0/23 268 Uniformed Services U
65103 PRIVATE 216.53.126.0/23 7270 Net2Phone Corp.
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
192.145.251.0/24 17860 WEBZEN
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 /8:17 /9:3 /10:8 /11:16 /12:76
/13:169 /14:319 /15:604 /16:8483 /17:2686 /18:4570
/19:10640 /20:11593 /21:9658 /22:13089 /23:13990 /24:91320
/25:359 /26:334 /27:193 /28:50 /29:28 /30:80
/31:1 /32:33
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 818 834 Covad Communications
6197 769 942 BellSouth Network Solutions,
7018 723 1518 AT&T WorldNet Services
2386 606 898 AT&T Data Communications Serv
9583 573 756 Sify Limited
4323 550 1151 Time Warner Telecom
27364 545 554 Armstrong Cable Services
4766 415 597 Korea Telecom (KIX)
5668 405 501 CenturyTel Internet Holdings,
702 366 593 UUNET - Commercial IP service
19916 363 370 OLM LLC
1239 351 857 Sprint
6198 344 471 BellSouth Network Solutions,
7011 344 399 Citizens Utilities
11492 309 317 Cable One
6517 301 323 Yipes Communications, Inc.
15270 300 324 PaeTec.net -a division of Pae
6467 290 435 E.Spire Communications, Inc.
18302 284 299 SK Global co., Ltd
701 279 1004 UUNET Technologies, Inc.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:7 8:23 11:1 12:1571 13:1 15:9
16:2 17:3 18:3 20:5 24:961 30:3
32:61 33:1 38:142 40:56 44:4 47:2
52:4 55:2 56:3 57:23 58:154 59:61
60:109 61:723 62:667 63:1893 64:2837 65:2075
66:2902 67:587 68:580 69:1142 70:170 71:13
72:328 80:599 81:549 82:458 83:296 84:229
85:307 86:82 87:27 128:154 129:167 130:90
131:299 132:34 133:1 134:144 135:42 136:148
137:63 138:114 139:61 140:398 141:105 142:145
143:134 144:191 145:33 146:282 147:110 148:295
149:179 150:107 151:64 152:108 153:89 154:5
155:143 156:76 157:99 158:167 159:167 160:82
161:72 162:209 163:111 164:188 165:195 166:153
167:246 168:436 169:145 170:317 171:8 190:1
192:5747 193:3248 194:2396 195:1582 196:652 198:3878
199:3279 200:4110 201:239 202:6031 203:6400 204:3798
205:2045 206:2455 207:2834 208:2038 209:3341 210:1645
211:768 212:1229 213:1313 214:295 215:35 216:3629
217:1116 218:210 219:163 220:434 221:242 222:116
End of report
