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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 19 Apr, 2007
Analysis Summary
----------------
BGP routing table entries examined: 218289
Prefixes after maximum aggregation: 116600
Deaggregation factor: 1.87
Unique aggregates announced to Internet: 105952
Total ASes present in the Internet Routing Table: 24951
Prefixes per ASN: 8.75
Origin-only ASes present in the Internet Routing Table: 21728
Origin ASes announcing only one prefix: 10499
Transit ASes present in the Internet Routing Table: 3223
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: 28
Max AS path prepend of ASN (34204) 23
Prefixes from unregistered ASNs in the Routing Table: 4
Unregistered ASNs in the Routing Table: 5
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 11
Number of addresses announced to Internet: 1710549320
Equivalent to 101 /8s, 244 /16s and 233 /24s
Percentage of available address space announced: 46.2
Percentage of allocated address space announced: 62.7
Percentage of available address space allocated: 73.7
Total number of prefixes smaller than registry allocations: 114083
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 50183
Total APNIC prefixes after maximum aggregation: 20174
APNIC Deaggregation factor: 2.49
Prefixes being announced from the APNIC address blocks: 47225
Unique aggregates announced from the APNIC address blocks: 21111
APNIC Region origin ASes present in the Internet Routing Table: 2920
APNIC Prefixes per ASN: 16.17
APNIC Region origin ASes announcing only one prefix: 789
APNIC Region transit ASes present in the Internet Routing Table: 435
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 291831232
Equivalent to 17 /8s, 100 /16s and 253 /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: 105968
Total ARIN prefixes after maximum aggregation: 61883
ARIN Deaggregation factor: 1.71
Prefixes being announced from the ARIN address blocks: 77972
Unique aggregates announced from the ARIN address blocks: 30283
ARIN Region origin ASes present in the Internet Routing Table: 11500
ARIN Prefixes per ASN: 6.78
ARIN Region origin ASes announcing only one prefix: 4401
ARIN Region transit ASes present in the Internet Routing Table: 1049
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 21
Number of ARIN addresses announced to Internet: 328985216
Equivalent to 19 /8s, 155 /16s and 234 /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: 44991
Total RIPE prefixes after maximum aggregation: 29420
RIPE Deaggregation factor: 1.53
Prefixes being announced from the RIPE address blocks: 41552
Unique aggregates announced from the RIPE address blocks: 27731
RIPE Region origin ASes present in the Internet Routing Table: 9487
RIPE Prefixes per ASN: 4.38
RIPE Region origin ASes announcing only one prefix: 5005
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: 28
Number of RIPE addresses announced to Internet: 303187456
Equivalent to 18 /8s, 18 /16s and 70 /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: 4112
LACNIC Deaggregation factor: 3.55
Prefixes being announced from the LACNIC address blocks: 12673
Unique aggregates announced from the LACNIC address blocks: 7088
LACNIC Region origin ASes present in the Internet Routing Table: 775
LACNIC Prefixes per ASN: 16.35
LACNIC Region origin ASes announcing only one prefix: 246
LACNIC Region transit ASes present in the Internet Routing Table: 136
Average LACNIC Region AS path length visible: 4.2
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 38260992
Equivalent to 2 /8s, 71 /16s and 209 /24s
Percentage of available LACNIC address space announced: 57.0
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: 2559
Total AfriNIC prefixes after maximum aggregation: 1003
AfriNIC Deaggregation factor: 2.55
Prefixes being announced from the AfriNIC address blocks: 1925
Unique aggregates announced from the AfriNIC address blocks: 1178
AfriNIC Region origin ASes present in the Internet Routing Table: 188
AfriNIC Prefixes per ASN: 10.24
AfriNIC Region origin ASes announcing only one prefix: 58
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: 6045184
Equivalent to 0 /8s, 92 /16s and 62 /24s
Percentage of available AfriNIC address space announced: 18.0
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 1274 9487 269 CHINANET-BACKBONE
4755 1201 383 76 Videsh Sanchar Nigam Ltd. Aut
9583 1096 78 376 Sify Limited
9498 973 469 74 BHARTI BT INTERNET LTD.
4766 782 4943 312 Korea Telecom (KIX)
23577 779 35 707 Korea Telecom (ATM-MPLS)
17488 663 43 34 Hathway IP Over Cable Interne
7545 614 142 79 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 462 799 74 China Telecom (Shanghai)
9443 459 115 74 Primus Telecommunications
7474 398 217 267 SingTel Optus Pty Ltd
9829 358 274 14 BSNL National Internet Backbo
17557 358 35 172 Pakistan Telecom
17974 345 129 12 PT TELEKOMUNIKASI INDONESIA
4837 343 4708 157 chinanet IDC center beijing n
4802 342 83 144 Wantree Development
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1497 6125 983 AT&T WorldNet Services
4323 1273 1022 358 Time Warner Telecom
2386 1097 529 741 AT&T Data Communications Serv
6478 1093 334 148 AT&T Worldnet Services
6197 1035 686 501 BellSouth Network Solutions,
11492 1035 102 15 Cable One
18566 999 288 9 Covad Communications
174 952 6792 868 Cogent Communications
701 943 6677 739 UUNET Technologies, Inc.
1239 825 2716 575 Sprint
20115 821 734 430 Charter Communications
7011 783 225 465 Citizens Utilities
209 718 3734 570 Qwest
19262 709 2554 172 Verizon Global Networks
22773 700 1871 40 Cox Communications, Inc.
721 615 21756 274 DLA Systems Automation Center
852 594 1095 376 Telus Advanced Communications
5668 587 160 17 CenturyTel Internet Holdings,
7029 569 456 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 273 95 250 Dynamic Network Technologies,
8220 259 461 249 COLT Telecommunications
680 258 2044 250 DFN-IP service G-WiN
3215 239 2256 92 France Telecom Transpac
8708 236 288 229 Romania Data Systems S.A.
3269 215 2583 73 TELECOM ITALIA
3246 207 338 196 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 191 1180 169 SWIPnet Swedish IP Network
9116 188 134 24 Goldenlines main autonomous s
12479 185 578 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 1047 1868 214 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 212 171 85 AVANTEL, S.A.
10620 183 53 23 TVCABLE BOGOTA
20299 183 25 24 NEWCOM AMERICAS
10481 181 72 8 Prima S.A.
23216 158 19 42 RAMtelecom Telecomunicaciones
21826 156 28 59 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 217 188 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 28 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 1201 1125 Videsh Sanchar Nigam Ltd. Aut
11492 1035 1020 Cable One
4134 1274 1005 CHINANET-BACKBONE
18566 999 990 Covad Communications
6478 1093 945 AT&T Worldnet Services
4323 1273 915 Time Warner Telecom
9498 973 899 BHARTI BT INTERNET LTD.
8151 1047 833 UniNet S.A. de C.V.
9583 1096 720 Sify Limited
22773 700 660 Cox Communications, Inc.
17488 663 629 Hathway IP Over Cable Interne
5668 587 570 CenturyTel Internet Holdings,
19262 709 537 Verizon Global Networks
7545 614 535 TPG Internet Pty Ltd
6197 1035 534 BellSouth Network Solutions,
19916 568 514 OLM LLC
18101 529 503 Reliance Infocom Ltd Internet
4668 505 495 LG-EDS Systems Inc.
855 565 494 Canadian Research Network
15270 527 492 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
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 /8:19 /9:9 /10:13 /11:34 /12:122
/13:236 /14:447 /15:856 /16:9348 /17:3812 /18:6308
/19:13431 /20:15164 /21:13647 /22:17737 /23:19129 /24:115710
/25:769 /26:813 /27:483 /28:60 /29:35 /30:67
/31:0 /32:40
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6478 1084 1093 AT&T Worldnet Services
11492 1021 1035 Cable One
18566 981 999 Covad Communications
9583 935 1096 Sify Limited
2386 818 1097 AT&T Data Communications Serv
7018 815 1497 AT&T WorldNet Services
6197 797 1035 BellSouth Network Solutions,
23577 765 779 Korea Telecom (ATM-MPLS)
7011 686 783 Citizens Utilities
9498 636 973 BHARTI BT INTERNET LTD.
4755 591 1201 Videsh Sanchar Nigam Ltd. Aut
4766 588 782 Korea Telecom (KIX)
19916 563 568 OLM LLC
4323 533 1273 Time Warner Telecom
4668 495 505 LG-EDS Systems Inc.
15270 494 527 PaeTec.net -a division of Pae
17488 484 663 Hathway IP Over Cable Interne
855 463 565 Canadian Research Network
18101 456 529 Reliance Infocom Ltd Internet
5668 455 587 CenturyTel Internet Holdings,
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:9 7:1 8:70 9:1 12:1794 15:19
16:3 17:3 18:8 20:37 24:949 25:1
32:53 38:297 40:57 41:120 44:2 47:4
52:4 55:1 56:3 57:26 58:368 59:368
60:264 61:908 62:970 63:1965 64:3110 65:2316
66:3259 67:799 68:646 69:1791 70:490 71:111
72:1257 73:1 74:367 75:253 76:36 77:142
80:842 81:806 82:613 83:375 84:435 85:743
86:445 87:460 88:244 89:841 90:21 91:266
97:1 116:15 121:173 122:525 123:95 124:776
125:938 128:272 129:221 130:123 131:348 132:52
133:10 134:194 135:39 136:180 137:83 138:194
139:62 140:477 141:149 142:368 143:210 144:289
145:43 146:323 147:145 148:398 149:142 150:115
151:124 152:94 153:121 154:4 155:252 156:153
157:183 158:161 159:155 160:104 161:88 162:236
163:142 164:453 165:403 166:249 167:278 168:499
169:120 170:395 171:15 172:1 189:263 190:570
192:5742 193:3779 194:3058 195:2202 196:930 198:3760
199:3278 200:4660 201:1015 202:7216 203:7413 204:3956
205:2101 206:2392 207:2906 208:2610 209:3623 210:2463
211:931 212:1292 213:1458 214:409 215:39 216:4011
217:1155 218:354 219:356 220:938 221:397 222:269
End of report
Report Website: http://thyme.apnic.net
