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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 25 Apr, 2007
Analysis Summary
----------------
BGP routing table entries examined: 218528
Prefixes after maximum aggregation: 116671
Deaggregation factor: 1.87
Unique aggregates announced to Internet: 105080
Total ASes present in the Internet Routing Table: 24996
Prefixes per ASN: 8.74
Origin-only ASes present in the Internet Routing Table: 21776
Origin ASes announcing only one prefix: 10528
Transit ASes present in the Internet Routing Table: 3220
Transit-only ASes present in the Internet Routing Table: 80
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: 8
Unregistered ASNs in the Routing Table: 9
Prefixes from 32-bit ASNs in the Routing Table: 3
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 11
Number of addresses announced to Internet: 1713430656
Equivalent to 102 /8s, 32 /16s and 224 /24s
Percentage of available address space announced: 46.2
Percentage of allocated address space announced: 62.8
Percentage of available address space allocated: 73.7
Total number of prefixes smaller than registry allocations: 114141
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 50271
Total APNIC prefixes after maximum aggregation: 20195
APNIC Deaggregation factor: 2.49
Prefixes being announced from the APNIC address blocks: 47304
Unique aggregates announced from the APNIC address blocks: 21105
APNIC Region origin ASes present in the Internet Routing Table: 2918
APNIC Prefixes per ASN: 16.21
APNIC Region origin ASes announcing only one prefix: 787
APNIC Region transit ASes present in the Internet Routing Table: 433
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 291986176
Equivalent to 17 /8s, 103 /16s and 91 /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: 105955
Total ARIN prefixes after maximum aggregation: 61837
ARIN Deaggregation factor: 1.71
Prefixes being announced from the ARIN address blocks: 78059
Unique aggregates announced from the ARIN address blocks: 30316
ARIN Region origin ASes present in the Internet Routing Table: 11507
ARIN Prefixes per ASN: 6.78
ARIN Region origin ASes announcing only one prefix: 4402
ARIN Region transit ASes present in the Internet Routing Table: 1046
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 21
Number of ARIN addresses announced to Internet: 329542272
Equivalent to 19 /8s, 164 /16s and 106 /24s
Percentage of available ARIN address space announced: 72.7
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: 45090
Total RIPE prefixes after maximum aggregation: 29507
RIPE Deaggregation factor: 1.53
Prefixes being announced from the RIPE address blocks: 41657
Unique aggregates announced from the RIPE address blocks: 26846
RIPE Region origin ASes present in the Internet Routing Table: 9522
RIPE Prefixes per ASN: 4.37
RIPE Region origin ASes announcing only one prefix: 5030
RIPE Region transit ASes present in the Internet Routing Table: 1535
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 305466880
Equivalent to 18 /8s, 53 /16s and 14 /24s
Percentage of available RIPE address space announced: 75.9
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
40960-44031
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: 14637
Total LACNIC prefixes after maximum aggregation: 4124
LACNIC Deaggregation factor: 3.55
Prefixes being announced from the LACNIC address blocks: 12733
Unique aggregates announced from the LACNIC address blocks: 7094
LACNIC Region origin ASes present in the Internet Routing Table: 780
LACNIC Prefixes per ASN: 16.32
LACNIC Region origin ASes announcing only one prefix: 251
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: 38366720
Equivalent to 2 /8s, 73 /16s and 110 /24s
Percentage of available LACNIC address space announced: 57.2
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: 2565
Total AfriNIC prefixes after maximum aggregation: 1002
AfriNIC Deaggregation factor: 2.56
Prefixes being announced from the AfriNIC address blocks: 1935
Unique aggregates announced from the AfriNIC address blocks: 1178
AfriNIC Region origin ASes present in the Internet Routing Table: 188
AfriNIC Prefixes per ASN: 10.29
AfriNIC Region origin ASes announcing only one prefix: 58
AfriNIC Region transit ASes present in the Internet Routing Table: 39
Average AfriNIC Region AS path length visible: 3.7
Max AfriNIC Region AS path length visible: 15
Number of AfriNIC addresses announced to Internet: 6058752
Equivalent to 0 /8s, 92 /16s and 115 /24s
Percentage of available AfriNIC address space announced: 18.1
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 1276 9487 269 CHINANET-BACKBONE
4755 1198 383 72 Videsh Sanchar Nigam Ltd. Aut
9583 1099 79 379 Sify Limited
9498 974 469 74 BHARTI BT INTERNET LTD.
4766 782 4943 312 Korea Telecom (KIX)
23577 778 35 706 Korea Telecom (ATM-MPLS)
17488 666 43 36 Hathway IP Over Cable Interne
7545 624 142 80 TPG Internet Pty Ltd
1221 581 1957 450 Telstra Pty Ltd
18101 528 116 26 Reliance Infocom Ltd Internet
4668 506 68 10 LG-EDS Systems Inc.
17676 504 10935 65 Softbank BB Corp.
4812 462 795 74 China Telecom (Shanghai)
9443 458 115 74 Primus Telecommunications
7474 401 217 268 SingTel Optus Pty Ltd
9829 358 274 14 BSNL National Internet Backbo
17557 358 33 170 Pakistan Telecom
4802 357 86 147 Wantree Development
4837 343 4708 157 chinanet IDC center beijing n
2907 338 1749 311 SINET Japan
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1500 6127 986 AT&T WorldNet Services
4323 1267 1022 359 Time Warner Telecom
2386 1106 531 746 AT&T Data Communications Serv
6478 1093 335 151 AT&T Worldnet Services
11492 1037 102 18 Cable One
6197 1033 687 502 BellSouth Network Solutions,
18566 1000 288 9 Covad Communications
174 952 6793 868 Cogent Communications
701 947 6693 739 UUNET Technologies, Inc.
20115 822 734 426 Charter Communications
1239 819 2717 576 Sprint
7011 785 225 468 Citizens Utilities
209 727 3733 582 Qwest
19262 710 2554 173 Verizon Global Networks
22773 704 1871 40 Cox Communications, Inc.
721 616 21756 273 DLA Systems Automation Center
852 594 1097 376 Telus Advanced Communications
5668 592 160 17 CenturyTel Internet Holdings,
7029 575 456 81 Alltel Information Services,
855 568 253 71 Canadian Research Network
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 519 1941 413 UUNET - Commercial IP service
24863 343 47 31 LINKdotNET AS number
3301 309 1455 289 TeliaNet Sweden
3320 303 4993 251 Deutsche Telekom AG
6746 274 95 251 Dynamic Network Technologies,
8220 259 461 250 COLT Telecommunications
680 258 2044 250 DFN-IP service G-WiN
3215 239 2256 92 France Telecom Transpac
8708 237 288 230 Romania Data Systems S.A.
3269 215 2583 73 TELECOM ITALIA
3246 207 340 197 Song Networks
8551 206 196 30 Bezeq International
30890 205 17 95 SC Kappa Invexim SRL
3352 200 1799 33 Ibernet, Internet Access Netw
20858 196 34 4 EgyNet
1257 192 1180 170 SWIPnet Swedish IP Network
9116 188 134 24 Goldenlines main autonomous s
12479 184 578 6 Uni2 Autonomous System
3300 183 171 88 AUCS Communications Services
786 177 1795 177 The JANET IP Service
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 1079 1869 210 UniNet S.A. de C.V.
11830 483 299 19 Instituto Costarricense de El
11172 365 116 64 Servicios Alestra S.A de C.V
16814 362 22 8 NSS, S.A.
22047 311 238 12 VTR PUNTO NET S.A.
7303 267 143 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 226 176 23 Telefonica Del Peru
6503 213 171 85 AVANTEL, S.A.
20299 198 26 20 NEWCOM AMERICAS
10481 181 72 8 Prima S.A.
10620 170 49 22 TVCABLE BOGOTA
23216 158 19 42 RAMtelecom Telecomunicaciones
21826 154 27 58 INTERCABLE
7910 153 11 30 ANDINET ON LINE
19429 148 92 39 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 226 188 7 TEDATA
6713 143 135 11 Itissalat Al-MAGHRIB
2018 137 309 112 Tertiary Education Network
15475 129 84 4 Nile Online
5536 123 8 15 Internet Egypt Network
33783 116 7 9 EEPAD TISP TELECOM & INTERNET
24835 85 48 6 RAYA Telecom - Egypt
2905 74 173 66 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
33776 30 2 7 Starcomms Nigeria Limited
21280 28 4 4 Swift Global Kenya Ltd.Is an
33766 28 2 1 Nyala Communications Pty Ltd
10798 24 2 15 Standard Bank of South Africa
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4755 1198 1126 Videsh Sanchar Nigam Ltd. Aut
11492 1037 1019 Cable One
4134 1276 1007 CHINANET-BACKBONE
18566 1000 991 Covad Communications
6478 1093 942 AT&T Worldnet Services
4323 1267 908 Time Warner Telecom
9498 974 900 BHARTI BT INTERNET LTD.
8151 1079 869 UniNet S.A. de C.V.
9583 1099 720 Sify Limited
22773 704 664 Cox Communications, Inc.
17488 666 630 Hathway IP Over Cable Interne
5668 592 575 CenturyTel Internet Holdings,
7545 624 544 TPG Internet Pty Ltd
19262 710 537 Verizon Global Networks
6197 1033 531 BellSouth Network Solutions,
19916 568 514 OLM LLC
18101 528 502 Reliance Infocom Ltd Internet
855 568 497 Canadian Research Network
4668 506 496 LG-EDS Systems Inc.
7029 575 494 Alltel Information Services,
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
65332 PRIVATE 63.166.106.192/27 1803 SPRINT
64786 PRIVATE 170.210.17.0/25 7303 Telecom Argentina St
64785 PRIVATE 170.210.21.128/25 7303 Telecom Argentina St
64807 PRIVATE 170.210.44.0/25 7303 Telecom Argentina St
64810 PRIVATE 170.210.78.128/25 7303 Telecom Argentina St
24410 UNALLOCATED 203.119.28.0/24 4134 CHINANET-BACKBONE
64512 PRIVATE 208.103.63.0/24 32703 Indiana Fiber Networ
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 /8:20 /9:9 /10:13 /11:33 /12:122
/13:236 /14:447 /15:859 /16:9351 /17:3831 /18:6310
/19:13465 /20:15199 /21:13723 /22:17764 /23:19175 /24:115832
/25:765 /26:817 /27:484 /28:58 /29:6 /30:1
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6478 1084 1093 AT&T Worldnet Services
11492 1023 1037 Cable One
18566 982 1000 Covad Communications
9583 938 1099 Sify Limited
2386 824 1106 AT&T Data Communications Serv
7018 815 1500 AT&T WorldNet Services
6197 794 1033 BellSouth Network Solutions,
23577 764 778 Korea Telecom (ATM-MPLS)
7011 688 785 Citizens Utilities
9498 638 974 BHARTI BT INTERNET LTD.
4755 592 1198 Videsh Sanchar Nigam Ltd. Aut
4766 588 782 Korea Telecom (KIX)
19916 563 568 OLM LLC
4323 529 1267 Time Warner Telecom
4668 496 506 LG-EDS Systems Inc.
15270 494 527 PaeTec.net -a division of Pae
17488 487 666 Hathway IP Over Cable Interne
855 466 568 Canadian Research Network
5668 458 592 CenturyTel Internet Holdings,
8151 456 1079 UniNet S.A. de C.V.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:9 7:1 8:77 9:1 12:1795 15:19
16:3 17:3 18:8 20:37 24:949 25:1
32:53 38:299 40:57 41:123 44:2 47:4
52:4 55:2 56:3 57:26 58:368 59:368
60:267 61:922 62:966 63:1960 64:3114 65:2324
66:3261 67:803 68:646 69:1813 70:501 71:110
72:1264 73:1 74:389 75:256 76:37 77:163
80:855 81:805 82:612 83:369 84:437 85:749
86:374 87:464 88:251 89:852 90:22 91:271
97:1 116:19 121:172 122:523 123:85 124:785
125:930 128:272 129:218 130:121 131:340 132:52
133:10 134:193 135:39 136:179 137:79 138:194
139:65 140:475 141:149 142:370 143:210 144:290
145:43 146:323 147:147 148:398 149:145 150:115
151:124 152:92 153:121 154:4 155:252 156:152
157:183 158:161 159:155 160:104 161:87 162:235
163:146 164:453 165:405 166:234 167:278 168:497
169:120 170:399 171:15 172:1 189:294 190:577
192:5732 193:3786 194:3077 195:2208 196:942 198:3753
199:3296 200:4708 201:954 202:7218 203:7417 204:3949
205:2092 206:2388 207:2907 208:2615 209:3617 210:2465
211:929 212:1302 213:1450 214:408 215:41 216:4007
217:1155 218:353 219:356 220:938 221:396 222:272
End of report
Report Website: http://thyme.apnic.net
