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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 18 Apr, 2007
Analysis Summary
----------------
BGP routing table entries examined: 218073
Prefixes after maximum aggregation: 116455
Deaggregation factor: 1.87
Unique aggregates announced to Internet: 106014
Total ASes present in the Internet Routing Table: 24933
Prefixes per ASN: 8.75
Origin-only ASes present in the Internet Routing Table: 21713
Origin ASes announcing only one prefix: 10494
Transit ASes present in the Internet Routing Table: 3220
Transit-only ASes present in the Internet Routing Table: 79
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 21
Max AS path prepend of ASN (20858) 18
Prefixes from unregistered ASNs in the Routing Table: 3
Unregistered ASNs in the Routing Table: 4
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 11
Number of addresses announced to Internet: 1693082184
Equivalent to 100 /8s, 234 /16s and 98 /24s
Percentage of available address space announced: 45.7
Percentage of allocated address space announced: 62.0
Percentage of available address space allocated: 73.7
Total number of prefixes smaller than registry allocations: 113874
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 50032
Total APNIC prefixes after maximum aggregation: 20091
APNIC Deaggregation factor: 2.49
Prefixes being announced from the APNIC address blocks: 47076
Unique aggregates announced from the APNIC address blocks: 21110
APNIC Region origin ASes present in the Internet Routing Table: 2922
APNIC Prefixes per ASN: 16.11
APNIC Region origin ASes announcing only one prefix: 788
APNIC Region transit ASes present in the Internet Routing Table: 429
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 291824832
Equivalent to 17 /8s, 100 /16s and 228 /24s
Percentage of available APNIC address space announced: 72.3
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, 116/6, 120/6, 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: 105934
Total ARIN prefixes after maximum aggregation: 61866
ARIN Deaggregation factor: 1.71
Prefixes being announced from the ARIN address blocks: 77934
Unique aggregates announced from the ARIN address blocks: 30284
ARIN Region origin ASes present in the Internet Routing Table: 11491
ARIN Prefixes per ASN: 6.78
ARIN Region origin ASes announcing only one prefix: 4399
ARIN Region transit ASes present in the Internet Routing Table: 1051
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 21
Number of ARIN addresses announced to Internet: 328676736
Equivalent to 19 /8s, 151 /16s and 53 /24s
Percentage of available ARIN address space announced: 72.6
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, 39936-40959
ARIN Address Blocks 24/8, 63/8, 64/5, 72/6, 76/8, 96/6, 199/8, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 44968
Total RIPE prefixes after maximum aggregation: 29404
RIPE Deaggregation factor: 1.53
Prefixes being announced from the RIPE address blocks: 41530
Unique aggregates announced from the RIPE address blocks: 27736
RIPE Region origin ASes present in the Internet Routing Table: 9478
RIPE Prefixes per ASN: 4.38
RIPE Region origin ASes announcing only one prefix: 5002
RIPE Region transit ASes present in the Internet Routing Table: 1538
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 303008000
Equivalent to 18 /8s, 15 /16s and 137 /24s
Percentage of available RIPE address space announced: 75.3
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, 38912-39935
40960-43007
RIPE Address Blocks 62/8, 77/8, 78/7, 80/5, 88/6, 92/7, 193/8, 194/7,
212/7 and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 14581
Total LACNIC prefixes after maximum aggregation: 4087
LACNIC Deaggregation factor: 3.57
Prefixes being announced from the LACNIC address blocks: 12676
Unique aggregates announced from the LACNIC address blocks: 7165
LACNIC Region origin ASes present in the Internet Routing Table: 775
LACNIC Prefixes per ASN: 16.36
LACNIC Region origin ASes announcing only one prefix: 248
LACNIC Region transit ASes present in the Internet Routing Table: 137
Average LACNIC Region AS path length visible: 4.2
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 38115328
Equivalent to 2 /8s, 69 /16s and 152 /24s
Percentage of available LACNIC address space announced: 56.8
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: 2553
Total AfriNIC prefixes after maximum aggregation: 1001
AfriNIC Deaggregation factor: 2.55
Prefixes being announced from the AfriNIC address blocks: 1919
Unique aggregates announced from the AfriNIC address blocks: 1174
AfriNIC Region origin ASes present in the Internet Routing Table: 187
AfriNIC Prefixes per ASN: 10.26
AfriNIC Region origin ASes announcing only one prefix: 57
AfriNIC Region transit ASes present in the Internet Routing Table: 38
Average AfriNIC Region AS path length visible: 3.7
Max AfriNIC Region AS path length visible: 15
Number of AfriNIC addresses announced to Internet: 5969408
Equivalent to 0 /8s, 91 /16s and 22 /24s
Percentage of available AfriNIC address space announced: 17.8
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 1275 9487 269 CHINANET-BACKBONE
4755 1200 383 76 Videsh Sanchar Nigam Ltd. Aut
9583 1090 78 377 Sify Limited
9498 973 469 74 BHARTI BT INTERNET LTD.
4766 787 4943 312 Korea Telecom (KIX)
23577 780 35 708 Korea Telecom (ATM-MPLS)
17488 663 43 34 Hathway IP Over Cable Interne
7545 615 142 80 TPG Internet Pty Ltd
1221 580 1957 449 Telstra Pty Ltd
18101 529 116 26 Reliance Infocom Ltd Internet
4668 505 68 10 LG-EDS Systems Inc.
17676 503 10935 65 Softbank BB Corp.
4812 458 799 74 China Telecom (Shanghai)
9443 458 115 74 Primus Telecommunications
7474 394 216 266 SingTel Optus Pty Ltd
17557 359 35 173 Pakistan Telecom
4802 358 86 148 Wantree Development
9829 358 274 14 BSNL National Internet Backbo
17974 345 129 12 PT TELEKOMUNIKASI INDONESIA
4837 342 4708 157 chinanet IDC center beijing n
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1497 6125 988 AT&T WorldNet Services
4323 1271 1022 355 Time Warner Telecom
2386 1096 529 740 AT&T Data Communications Serv
6478 1095 335 145 AT&T Worldnet Services
6197 1035 686 501 BellSouth Network Solutions,
11492 1031 102 15 Cable One
18566 999 288 9 Covad Communications
174 952 6792 868 Cogent Communications
701 942 6677 739 UUNET Technologies, Inc.
1239 826 2716 576 Sprint
20115 819 732 428 Charter Communications
7011 783 225 465 Citizens Utilities
209 719 3734 570 Qwest
19262 707 2534 170 Verizon Global Networks
22773 700 1871 40 Cox Communications, Inc.
721 617 21756 274 DLA Systems Automation Center
852 594 1095 376 Telus Advanced Communications
5668 586 160 17 CenturyTel Internet Holdings,
7029 568 456 81 Alltel Information Services,
19916 568 49 54 OLM LLC
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 520 1941 414 UUNET - Commercial IP service
24863 342 47 32 LINKdotNET AS number
3301 307 1455 287 TeliaNet Sweden
3320 303 4993 251 Deutsche Telekom AG
6746 274 95 251 Dynamic Network Technologies,
680 258 2044 250 DFN-IP service G-WiN
8220 258 461 249 COLT Telecommunications
3215 239 2256 92 France Telecom Transpac
8708 236 288 229 Romania Data Systems S.A.
3269 216 2583 73 TELECOM ITALIA
3246 207 338 196 Song Networks
8551 206 196 30 Bezeq International
30890 205 17 93 SC Kappa Invexim SRL
3352 200 1799 33 Ibernet, Internet Access Netw
20858 196 34 4 EgyNet
1257 191 1180 169 SWIPnet Swedish IP Network
9116 188 134 24 Goldenlines main autonomous s
12479 184 578 6 Uni2 Autonomous System
3300 183 171 89 AUCS Communications Services
786 178 1795 178 The JANET IP Service
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 1045 1869 209 UniNet S.A. de C.V.
11830 483 299 19 Instituto Costarricense de El
11172 363 116 64 Servicios Alestra S.A de C.V
16814 362 22 8 NSS, S.A.
22047 310 238 12 VTR PUNTO NET S.A.
7303 266 143 24 Telecom Argentina Stet-France
6471 259 74 31 ENTEL CHILE S.A.
14117 242 17 14 Telefonica del Sur S.A.
11556 235 128 3 Cable-Wireless Panama
6147 225 176 23 Telefonica Del Peru
6503 213 171 85 AVANTEL, S.A.
20299 182 25 24 NEWCOM AMERICAS
10481 181 72 8 Prima S.A.
10620 171 50 22 TVCABLE BOGOTA
23216 158 19 42 RAMtelecom Telecomunicaciones
21826 156 28 59 INTERCABLE
7910 153 11 30 ANDINET ON LINE
19429 147 91 38 E.T.B.
14522 146 22 5 SatNet S.A.
18822 146 9 6 TELEFONICA MANQUEHUE
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 291 868 232 The Internet Solution
8452 214 188 7 TEDATA
6713 143 135 11 Itissalat Al-MAGHRIB
2018 138 309 113 Tertiary Education Network
15475 129 84 4 Nile Online
5536 123 8 15 Internet Egypt Network
33783 115 7 8 EEPAD TISP TELECOM & INTERNET
24835 85 48 6 RAYA Telecom - Egypt
2905 80 173 72 The Internetworking Company o
2561 61 6 2 Egyptian Universities Network
15706 51 12 4 Sudatel Internet Exchange Aut
23889 49 16 13 MAURITIUS TELECOM
5713 44 294 34 Telkom SA Ltd
33774 43 13 24 AS Number for Telecom Algeria
16637 33 21 25 Johnnic e-Ventures
8524 30 2 6 AUCEGYPT Autonomous System
33766 29 2 1 Nyala Communications Pty Ltd
21280 27 4 4 Swift Global Kenya Ltd.Is an
33776 27 2 5 Starcomms Nigeria Limited
12455 24 6 3 Jambonet Autonomous system
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4755 1200 1124 Videsh Sanchar Nigam Ltd. Aut
11492 1031 1016 Cable One
4134 1275 1006 CHINANET-BACKBONE
18566 999 990 Covad Communications
6478 1095 950 AT&T Worldnet Services
4323 1271 916 Time Warner Telecom
9498 973 899 BHARTI BT INTERNET LTD.
8151 1045 836 UniNet S.A. de C.V.
9583 1090 713 Sify Limited
22773 700 660 Cox Communications, Inc.
17488 663 629 Hathway IP Over Cable Interne
5668 586 569 CenturyTel Internet Holdings,
19262 707 537 Verizon Global Networks
7545 615 535 TPG Internet Pty Ltd
6197 1035 534 BellSouth Network Solutions,
19916 568 514 OLM LLC
18101 529 503 Reliance Infocom Ltd Internet
855 566 495 Canadian Research Network
4668 505 495 LG-EDS Systems Inc.
15270 525 490 PaeTec.net -a division of Pae
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
65332 PRIVATE 63.166.106.192/27 1803 SPRINT
24410 UNALLOCATED 203.119.28.0/24 4134 CHINANET-BACKBONE
22895 UNALLOCATED 216.174.38.0/24 19094 Adelphia Business So
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
7.1.1.0/24 1239 Sprint
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
172.33.1.0/24 7018 AT&T WorldNet Services
192.0.10.0/24 9498 BHARTI BT INTERNET LTD.
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
192.153.136.0/21 721 DLA Systems Automation Center
192.172.0.0/19 721 DLA Systems Automation Center
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:18 /9:9 /10:13 /11:34 /12:122
/13:236 /14:447 /15:854 /16:9344 /17:3811 /18:6297
/19:13416 /20:15180 /21:13637 /22:17713 /23:19119 /24:115548
/25:768 /26:816 /27:489 /28:60 /29:35 /30:67
/31:0 /32:40
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6478 1086 1095 AT&T Worldnet Services
11492 1017 1031 Cable One
18566 981 999 Covad Communications
9583 930 1090 Sify Limited
2386 818 1096 AT&T Data Communications Serv
7018 813 1497 AT&T WorldNet Services
6197 797 1035 BellSouth Network Solutions,
23577 766 780 Korea Telecom (ATM-MPLS)
7011 686 783 Citizens Utilities
9498 636 973 BHARTI BT INTERNET LTD.
4766 593 787 Korea Telecom (KIX)
4755 591 1200 Videsh Sanchar Nigam Ltd. Aut
19916 563 568 OLM LLC
4323 534 1271 Time Warner Telecom
4668 495 505 LG-EDS Systems Inc.
15270 492 525 PaeTec.net -a division of Pae
17488 484 663 Hathway IP Over Cable Interne
855 464 566 Canadian Research Network
18101 456 529 Reliance Infocom Ltd Internet
5668 454 586 CenturyTel Internet Holdings,
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:9 7:1 8:70 9:1 12:1792 15:19
16:3 17:3 18:8 20:37 24:950 25:1
32:53 38:297 40:57 41:120 44:2 47:4
52:4 55:1 56:3 57:26 58:367 59:367
60:264 61:907 62:965 63:1962 64:3109 65:2315
66:3252 67:799 68:647 69:1790 70:490 71:111
72:1253 73:1 74:367 75:253 76:35 77:150
80:844 81:801 82:614 83:378 84:435 85:750
86:442 87:457 88:244 89:849 90:19 91:267
97:1 116:15 121:176 122:525 123:96 124:771
125:938 128:272 129:221 130:123 131:348 132:52
133:10 134:193 135:39 136:180 137:83 138:194
139:62 140:479 141:149 142:369 143:214 144:290
145:43 146:323 147:145 148:397 149:142 150:115
151:124 152:93 153:121 154:4 155:252 156:151
157:183 158:161 159:153 160:103 161:90 162:236
163:141 164:453 165:403 166:248 167:278 168:498
169:120 170:393 171:15 172:1 189:259 190:568
192:5744 193:3781 194:3060 195:2212 196:929 198:3759
199:3285 200:4676 201:1016 202:7195 203:7418 204:3956
205:2098 206:2392 207:2912 208:2604 209:3617 210:2376
211:933 212:1297 213:1449 214:411 215:39 216:4009
217:1148 218:353 219:301 220:937 221:394 222:269
End of report
Report Website: http://thyme.apnic.net
