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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sun 29 Apr, 2007
Report Website: http://thyme.apnic.net
This report: http://thyme.apnic.net/ap-data/2007/04/29/0400
Analysis Summary
----------------
BGP routing table entries examined: 218826
Prefixes after maximum aggregation: 116770
Deaggregation factor: 1.87
Unique aggregates announced to Internet: 105256
Total ASes present in the Internet Routing Table: 25060
Prefixes per ASN: 8.73
Origin-only ASes present in the Internet Routing Table: 21822
Origin ASes announcing only one prefix: 10561
Transit ASes present in the Internet Routing Table: 3238
Transit-only ASes present in the Internet Routing Table: 82
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: 6
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: 12
Number of addresses announced to Internet: 1715653568
Equivalent to 102 /8s, 66 /16s and 203 /24s
Percentage of available address space announced: 46.3
Percentage of allocated address space announced: 62.8
Percentage of available address space allocated: 73.7
Total number of prefixes smaller than registry allocations: 114446
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 50379
Total APNIC prefixes after maximum aggregation: 20170
APNIC Deaggregation factor: 2.50
Prefixes being announced from the APNIC address blocks: 47410
Unique aggregates announced from the APNIC address blocks: 21151
APNIC Region origin ASes present in the Internet Routing Table: 2927
APNIC Prefixes per ASN: 16.20
APNIC Region origin ASes announcing only one prefix: 791
APNIC Region transit ASes present in the Internet Routing Table: 437
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 292417472
Equivalent to 17 /8s, 109 /16s and 239 /24s
Percentage of available APNIC address space announced: 72.4
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: 61907
ARIN Deaggregation factor: 1.71
Prefixes being announced from the ARIN address blocks: 77999
Unique aggregates announced from the ARIN address blocks: 30355
ARIN Region origin ASes present in the Internet Routing Table: 11526
ARIN Prefixes per ASN: 6.77
ARIN Region origin ASes announcing only one prefix: 4409
ARIN Region transit ASes present in the Internet Routing Table: 1052
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 21
Number of ARIN addresses announced to Internet: 330740352
Equivalent to 19 /8s, 182 /16s and 178 /24s
Percentage of available ARIN address space announced: 73.0
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: 45171
Total RIPE prefixes after maximum aggregation: 29572
RIPE Deaggregation factor: 1.53
Prefixes being announced from the RIPE address blocks: 41743
Unique aggregates announced from the RIPE address blocks: 26895
RIPE Region origin ASes present in the Internet Routing Table: 9552
RIPE Prefixes per ASN: 4.37
RIPE Region origin ASes announcing only one prefix: 5050
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: 305765248
Equivalent to 18 /8s, 57 /16s and 155 /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: 14751
Total LACNIC prefixes after maximum aggregation: 4112
LACNIC Deaggregation factor: 3.59
Prefixes being announced from the LACNIC address blocks: 12844
Unique aggregates announced from the LACNIC address blocks: 7121
LACNIC Region origin ASes present in the Internet Routing Table: 783
LACNIC Prefixes per ASN: 16.40
LACNIC Region origin ASes announcing only one prefix: 253
LACNIC Region transit ASes present in the Internet Routing Table: 140
Average LACNIC Region AS path length visible: 4.2
Max LACNIC Region AS path length visible: 17
Number of LACNIC addresses announced to Internet: 38372608
Equivalent to 2 /8s, 73 /16s and 133 /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: 2562
Total AfriNIC prefixes after maximum aggregation: 1003
AfriNIC Deaggregation factor: 2.55
Prefixes being announced from the AfriNIC address blocks: 1943
Unique aggregates announced from the AfriNIC address blocks: 1181
AfriNIC Region origin ASes present in the Internet Routing Table: 189
AfriNIC Prefixes per ASN: 10.28
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: 3.8
Max AfriNIC Region AS path length visible: 15
Number of AfriNIC addresses announced to Internet: 6062336
Equivalent to 0 /8s, 92 /16s and 129 /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 1280 9537 272 CHINANET-BACKBONE
4755 1199 383 72 Videsh Sanchar Nigam Ltd. Aut
9583 1099 79 381 Sify Limited
9498 973 469 74 BHARTI BT INTERNET LTD.
4766 782 4943 312 Korea Telecom (KIX)
23577 779 35 708 Korea Telecom (ATM-MPLS)
17488 672 44 34 Hathway IP Over Cable Interne
7545 627 142 81 TPG Internet Pty Ltd
1221 543 1954 422 Telstra Pty Ltd
18101 529 116 27 Reliance Infocom Ltd Internet
4668 507 68 10 LG-EDS Systems Inc.
17676 504 10935 65 Softbank BB Corp.
4812 464 811 75 China Telecom (Shanghai)
9443 458 115 74 Primus Telecommunications
7474 406 217 270 SingTel Optus Pty Ltd
4802 358 86 147 Wantree Development
9829 358 274 14 BSNL National Internet Backbo
17557 358 35 170 Pakistan Telecom
17974 346 129 12 PT TELEKOMUNIKASI INDONESIA
4837 344 4724 158 chinanet IDC center beijing n
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1491 6126 991 AT&T WorldNet Services
4323 1265 1022 361 Time Warner Telecom
2386 1135 564 752 AT&T Data Communications Serv
6478 1089 336 149 AT&T Worldnet Services
11492 1045 103 21 Cable One
6197 1034 687 502 BellSouth Network Solutions,
18566 1001 288 9 Covad Communications
174 956 6793 869 Cogent Communications
701 935 6660 730 UUNET Technologies, Inc.
20115 822 734 426 Charter Communications
1239 820 2717 581 Sprint
7011 787 226 469 Citizens Utilities
209 728 3749 583 Qwest
19262 725 2587 174 Verizon Global Networks
22773 707 1871 40 Cox Communications, Inc.
721 616 21756 273 DLA Systems Automation Center
5668 595 160 17 CenturyTel Internet Holdings,
852 594 1097 376 Telus Advanced Communications
7029 576 456 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
702 520 1941 414 UUNET - Commercial IP service
24863 343 47 31 LINKdotNET AS number
3301 309 1455 289 TeliaNet Sweden
3320 302 4993 250 Deutsche Telekom AG
6746 275 127 252 Dynamic Network Technologies,
8220 260 461 251 COLT Telecommunications
680 256 2042 249 DFN-IP service G-WiN
3215 240 2256 92 France Telecom Transpac
8708 236 287 229 Romania Data Systems S.A.
3269 215 2583 73 TELECOM ITALIA
3246 206 339 196 Song Networks
8551 206 196 30 Bezeq International
3352 202 1799 33 Ibernet, Internet Access Netw
20858 196 34 4 EgyNet
1257 190 1180 168 SWIPnet Swedish IP Network
30890 189 15 94 SC Kappa Invexim SRL
9116 188 134 24 Goldenlines main autonomous s
12479 185 578 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 1116 1869 211 UniNet S.A. de C.V.
11830 483 299 19 Instituto Costarricense de El
11172 364 116 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 274 143 30 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 220 164 24 Telefonica Del Peru
6503 215 172 86 AVANTEL, S.A.
20299 192 23 14 NEWCOM AMERICAS
10620 185 53 23 TVCABLE BOGOTA
10481 181 72 8 Prima S.A.
23216 157 19 42 RAMtelecom Telecomunicaciones
21826 155 27 59 INTERCABLE
7910 154 11 29 ANDINET ON LINE
19429 148 92 39 E.T.B.
14522 146 22 5 SatNet S.A.
19169 142 9 27 Telconet
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 291 868 232 The Internet Solution
8452 224 188 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 114 7 9 EEPAD TISP TELECOM & INTERNET
24835 85 48 6 RAYA Telecom - Egypt
2905 76 174 68 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
33766 29 2 1 Nyala Communications Pty Ltd
12455 25 6 3 Jambonet Autonomous system
10798 24 2 15 Standard Bank of South Africa
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4755 1199 1127 Videsh Sanchar Nigam Ltd. Aut
11492 1045 1024 Cable One
4134 1280 1008 CHINANET-BACKBONE
18566 1001 992 Covad Communications
6478 1089 940 AT&T Worldnet Services
8151 1116 905 UniNet S.A. de C.V.
4323 1265 904 Time Warner Telecom
9498 973 899 BHARTI BT INTERNET LTD.
9583 1099 718 Sify Limited
22773 707 667 Cox Communications, Inc.
17488 672 638 Hathway IP Over Cable Interne
5668 595 578 CenturyTel Internet Holdings,
19262 725 551 Verizon Global Networks
7545 627 546 TPG Internet Pty Ltd
6197 1034 532 BellSouth Network Solutions,
19916 568 517 OLM LLC
18101 529 502 Reliance Infocom Ltd Internet
855 568 497 Canadian Research Network
4668 507 497 LG-EDS Systems Inc.
7029 576 495 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
64858 PRIVATE 84.36.180.0/24 20858 EgyNet
64982 PRIVATE 89.207.224.0/24 36385 Google Incorporated
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
2.0.0.0/24 41856 Flagmanskaya Sluzhba Svyazi
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 /11:34 /12:122
/13:238 /14:448 /15:860 /16:9375 /17:3836 /18:6333
/19:13425 /20:15230 /21:13772 /22:17799 /23:19148 /24:116016
/25:766 /26:824 /27:483 /28:60 /29:6 /30:1
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6478 1080 1089 AT&T Worldnet Services
11492 1031 1045 Cable One
18566 983 1001 Covad Communications
9583 937 1099 Sify Limited
2386 831 1135 AT&T Data Communications Serv
7018 807 1491 AT&T WorldNet Services
6197 795 1034 BellSouth Network Solutions,
23577 765 779 Korea Telecom (ATM-MPLS)
7011 690 787 Citizens Utilities
9498 636 973 BHARTI BT INTERNET LTD.
4755 593 1199 Videsh Sanchar Nigam Ltd. Aut
4766 588 782 Korea Telecom (KIX)
19916 563 568 OLM LLC
4323 523 1265 Time Warner Telecom
4668 496 507 LG-EDS Systems Inc.
8151 495 1116 UniNet S.A. de C.V.
15270 494 527 PaeTec.net -a division of Pae
17488 493 672 Hathway IP Over Cable Interne
855 466 568 Canadian Research Network
5668 460 595 CenturyTel Internet Holdings,
Number of /24s announced per /8 block (Global)
----------------------------------------------
2:1 4:9 7:1 8:78 9:1 12:1806
15:19 16:3 17:3 18:8 20:37 24:926
25:1 32:53 38:300 40:57 41:125 44:2
47:4 52:4 55:2 56:3 57:26 58:388
59:370 60:270 61:918 62:967 63:1958 64:3096
65:2336 66:3254 67:804 68:640 69:1823 70:504
71:104 72:1284 73:1 74:406 75:257 76:38
77:181 80:858 81:803 82:592 83:373 84:430
85:749 86:365 87:464 88:254 89:854 90:24
91:270 97:6 116:43 121:175 122:519 123:85
124:793 125:934 128:273 129:218 130:122 131:349
132:52 133:10 134:193 135:39 136:181 137:78
138:195 139:63 140:480 141:168 142:369 143:206
144:291 145:43 146:322 147:146 148:398 149:142
150:115 151:145 152:92 153:120 154:4 155:253
156:154 157:182 158:161 159:155 160:104 161:89
162:234 163:145 164:453 165:408 166:234 167:279
168:490 169:119 170:398 171:15 172:1 189:332
190:592 192:5759 193:3793 194:3093 195:2210 196:944
198:3754 199:3294 200:4725 201:958 202:7198 203:7435
204:3942 205:2087 206:2377 207:2887 208:2627 209:3613
210:2465 211:936 212:1306 213:1459 214:380 215:41
216:4003 217:1139 218:354 219:357 220:939 221:396
222:274
End of report
