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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 21 Sep, 2007
Report Website: http://thyme.apnic.net
This report: http://thyme.apnic.net/ap-data/2007/09/21/0400
Analysis Summary
----------------
BGP routing table entries examined: 231696
Prefixes after maximum aggregation: 120736
Deaggregation factor: 1.92
Unique aggregates announced to Internet: 112724
Total ASes present in the Internet Routing Table: 26250
Prefixes per ASN: 8.83
Origin-only ASes present in the Internet Routing Table: 22859
Origin ASes announcing only one prefix: 11135
Transit ASes present in the Internet Routing Table: 3391
Transit-only ASes present in the Internet Routing Table: 78
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 21
Max AS path prepend of ASN (35389) 16
Prefixes from unregistered ASNs in the Routing Table: 2
Unregistered ASNs in the Routing Table: 5
Prefixes from 32-bit ASNs in the Routing Table: 6
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 11
Number of addresses announced to Internet: 1783172960
Equivalent to 106 /8s, 73 /16s and 15 /24s
Percentage of available address space announced: 48.1
Percentage of allocated address space announced: 63.0
Percentage of available address space allocated: 76.4
Total number of prefixes smaller than registry allocations: 123130
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 54187
Total APNIC prefixes after maximum aggregation: 20950
APNIC Deaggregation factor: 2.59
Prefixes being announced from the APNIC address blocks: 51097
Unique aggregates announced from the APNIC address blocks: 22725
APNIC Region origin ASes present in the Internet Routing Table: 3056
APNIC Prefixes per ASN: 16.72
APNIC Region origin ASes announcing only one prefix: 806
APNIC Region transit ASes present in the Internet Routing Table: 470
Average APNIC Region AS path length visible: 3.7
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 318676384
Equivalent to 18 /8s, 254 /16s and 157 /24s
Percentage of available APNIC address space announced: 78.9
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: 109380
Total ARIN prefixes after maximum aggregation: 63153
ARIN Deaggregation factor: 1.73
Prefixes being announced from the ARIN address blocks: 80660
Unique aggregates announced from the ARIN address blocks: 32021
ARIN Region origin ASes present in the Internet Routing Table: 11832
ARIN Prefixes per ASN: 6.82
ARIN Region origin ASes announcing only one prefix: 4532
ARIN Region transit ASes present in the Internet Routing Table: 1084
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 15
Number of ARIN addresses announced to Internet: 345697408
Equivalent to 20 /8s, 154 /16s and 236 /24s
Percentage of available ARIN address space announced: 76.3
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: 48605
Total RIPE prefixes after maximum aggregation: 31125
RIPE Deaggregation factor: 1.56
Prefixes being announced from the RIPE address blocks: 44984
Unique aggregates announced from the RIPE address blocks: 29800
RIPE Region origin ASes present in the Internet Routing Table: 10210
RIPE Prefixes per ASN: 4.41
RIPE Region origin ASes announcing only one prefix: 5448
RIPE Region transit ASes present in the Internet Routing Table: 1622
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 21
Number of RIPE addresses announced to Internet: 327435904
Equivalent to 19 /8s, 132 /16s and 70 /24s
Percentage of available RIPE address space announced: 75.1
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, 38912-39935
40960-45055
RIPE Address Blocks 62/8, 77/8, 78/7, 80/4, 193/8, 194/7, 212/7
and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 16820
Total LACNIC prefixes after maximum aggregation: 4472
LACNIC Deaggregation factor: 3.76
Prefixes being announced from the LACNIC address blocks: 14938
Unique aggregates announced from the LACNIC address blocks: 7969
LACNIC Region origin ASes present in the Internet Routing Table: 867
LACNIC Prefixes per ASN: 17.23
LACNIC Region origin ASes announcing only one prefix: 281
LACNIC Region transit ASes present in the Internet Routing Table: 148
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 42419712
Equivalent to 2 /8s, 135 /16s and 70 /24s
Percentage of available LACNIC address space announced: 63.2
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: 2697
Total AfriNIC prefixes after maximum aggregation: 1024
AfriNIC Deaggregation factor: 2.63
Prefixes being announced from the AfriNIC address blocks: 2292
Unique aggregates announced from the AfriNIC address blocks: 1357
AfriNIC Region origin ASes present in the Internet Routing Table: 206
AfriNIC Prefixes per ASN: 11.13
AfriNIC Region origin ASes announcing only one prefix: 68
AfriNIC Region transit ASes present in the Internet Routing Table: 37
Average AfriNIC Region AS path length visible: 3.9
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 7456512
Equivalent to 0 /8s, 113 /16s and 199 /24s
Percentage of available AfriNIC address space announced: 22.2
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
4755 1349 383 69 Videsh Sanchar Nigam Ltd. Aut
9583 1127 81 407 Sify Limited
4134 1076 11219 292 CHINANET-BACKBONE
9498 1005 532 65 BHARTI BT INTERNET LTD.
4766 809 5441 321 Korea Telecom (KIX)
17488 806 52 58 Hathway IP Over Cable Interne
23577 790 34 684 Korea Telecom (ATM-MPLS)
7545 723 159 120 TPG Internet Pty Ltd
18101 598 119 50 Reliance Infocom Ltd Internet
4812 547 974 94 China Telecom (Shanghai)
1221 538 1950 419 Telstra Pty Ltd
9829 520 1281 11 BSNL National Internet Backbo
4668 517 68 10 LG-EDS Systems Inc.
17676 502 10903 63 Softbank BB Corp.
4808 485 778 115 CNCGROUP IP network: China169
9443 467 122 77 Primus Telecommunications
4802 441 133 154 Wantree Development
7474 382 218 269 SingTel Optus Pty Ltd
4837 356 5120 168 chinanet IDC center beijing n
17557 351 55 183 Pakistan Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1478 6122 998 AT&T WorldNet Services
4323 1336 990 369 Time Warner Telecom
2386 1216 635 730 AT&T Data Communications Serv
11492 1149 112 15 Cable One
6478 1129 328 134 AT&T Worldnet Services
6197 1033 718 509 BellSouth Network Solutions,
18566 1025 288 9 Covad Communications
174 967 6780 857 Cogent Communications
7011 940 285 558 Citizens Utilities
701 875 6573 680 UUNET Technologies, Inc.
20115 823 755 440 Charter Communications
1239 803 2720 565 Sprint
19262 777 2757 189 Verizon Global Networks
22773 770 2148 49 Cox Communications, Inc.
209 743 3835 587 Qwest
3356 658 10820 367 Level 3 Communications, LLC
5668 657 176 23 CenturyTel Internet Holdings,
6517 591 165 36 Yipes Communications, Inc.
852 584 1112 363 Telus Advanced Communications
15270 578 160 38 PaeTec.net -a division of Pae
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 494 1923 396 UUNET - Commercial IP service
24863 369 57 39 LINKdotNET AS number
9116 349 168 27 Goldenlines main autonomous s
3301 317 1456 294 TeliaNet Sweden
3320 314 6035 261 Deutsche Telekom AG
8551 297 284 38 Bezeq International
6746 290 131 266 Dynamic Network Technologies,
680 269 2045 257 DFN-IP service G-WiN
3215 260 2440 99 France Telecom Transpac
8220 256 444 239 COLT Telecommunications
8708 256 421 242 Romania Data Systems S.A.
3352 230 1882 40 Ibernet, Internet Access Netw
5089 224 1658 54 NTL Group Limited
3269 223 2839 73 TELECOM ITALIA
9121 214 1441 24 TTnet Autonomous System
3292 197 1380 177 TDC Tele Danmark
12479 194 578 6 Uni2 Autonomous System
1257 192 1195 170 SWIPnet Swedish IP Network
3300 191 171 91 AUCS Communications Services
3246 187 253 177 Song Networks
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 912 1974 207 UniNet S.A. de C.V.
11830 514 299 9 Instituto Costarricense de El
16814 426 26 9 NSS, S.A.
11172 374 114 60 Servicios Alestra S.A de C.V
7303 352 166 50 Telecom Argentina Stet-France
6471 329 75 33 ENTEL CHILE S.A.
14522 329 28 7 SatNet S.A.
22047 317 246 13 VTR PUNTO NET S.A.
14117 284 19 15 Telefonica del Sur S.A.
10481 278 104 9 Prima S.A.
11664 277 30 13 Keytech SA
10620 235 65 22 TVCABLE BOGOTA
11556 235 128 3 Cable-Wireless Panama
6147 228 178 24 Telefonica Del Peru
6503 200 170 82 AVANTEL, S.A.
23216 197 16 45 RAMtelecom Telecomunicaciones
20299 178 25 30 NEWCOM AMERICAS
8163 177 11 6 METROTEL REDES S.A.
19169 174 12 19 Telconet
21826 173 31 59 INTERCABLE
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 284 870 226 The Internet Solution
8452 218 188 7 TEDATA
6713 142 135 11 Itissalat Al-MAGHRIB
2018 140 301 115 Tertiary Education Network
33783 125 8 12 EEPAD TISP TELECOM & INTERNET
5536 124 8 10 Internet Egypt Network
33776 100 6 3 Starcomms Nigeria Limited
24835 87 48 6 RAYA Telecom - Egypt
15475 76 84 4 Nile Online
2905 75 174 72 The Internetworking Company o
23889 73 24 15 MAURITIUS TELECOM
15706 56 12 4 Sudatel Internet Exchange Aut
33774 47 29 25 AS Number for Telecom Algeria
5713 46 294 36 Telkom SA Ltd
16637 42 21 29 Johnnic e-Ventures
12455 35 6 3 Jambonet Autonomous system
8524 31 2 10 AUCEGYPT Autonomous System
21280 29 4 4 Swift Global Kenya Ltd.Is an
10798 27 16 1 Standard Bank of South Africa
29975 26 10 9 Vodacom
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4755 1349 1280 Videsh Sanchar Nigam Ltd. Aut
11492 1149 1134 Cable One
18566 1025 1016 Covad Communications
6478 1129 995 AT&T Worldnet Services
4323 1336 967 Time Warner Telecom
9498 1005 940 BHARTI BT INTERNET LTD.
4134 1076 784 CHINANET-BACKBONE
17488 806 748 Hathway IP Over Cable Interne
22773 770 721 Cox Communications, Inc.
9583 1127 720 Sify Limited
8151 912 705 UniNet S.A. de C.V.
5668 657 634 CenturyTel Internet Holdings,
7545 723 603 TPG Internet Pty Ltd
19262 777 588 Verizon Global Networks
6517 591 555 Yipes Communications, Inc.
18101 598 548 Reliance Infocom Ltd Internet
15270 578 540 PaeTec.net -a division of Pae
6197 1033 524 BellSouth Network Solutions,
19916 568 517 OLM LLC
9829 520 509 BSNL National Internet Backbo
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
24410 UNALLOCATED 203.119.28.0/24 4134 CHINANET-BACKBONE
24409 UNALLOCATED 203.119.29.0/24 9808 Guangdong Mobile Com
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
101.13.13.0/24 8764 LIETUVOS-TELEKOMAS Autonomous
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 /10:16 /11:37 /12:135
/13:262 /14:473 /15:922 /16:9624 /17:4087 /18:6639
/19:13994 /20:16479 /21:15001 /22:19425 /23:20291 /24:121896
/25:757 /26:1017 /27:515 /28:85 /29:5 /30:0
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1141 1149 Cable One
6478 1128 1129 AT&T Worldnet Services
18566 1007 1025 Covad Communications
9583 969 1127 Sify Limited
2386 908 1216 AT&T Data Communications Serv
7011 830 940 Citizens Utilities
7018 823 1478 AT&T WorldNet Services
6197 786 1033 BellSouth Network Solutions,
23577 781 790 Korea Telecom (ATM-MPLS)
4755 754 1349 Videsh Sanchar Nigam Ltd. Aut
9498 677 1005 BHARTI BT INTERNET LTD.
17488 629 806 Hathway IP Over Cable Interne
4766 607 809 Korea Telecom (KIX)
4323 566 1336 Time Warner Telecom
19916 563 568 OLM LLC
6517 556 591 Yipes Communications, Inc.
15270 542 578 PaeTec.net -a division of Pae
5668 522 657 CenturyTel Internet Holdings,
4668 507 517 LG-EDS Systems Inc.
18101 503 598 Reliance Infocom Ltd Internet
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:8 8:82 12:1786 13:1 15:20 16:3
17:3 18:13 20:37 24:968 25:1 32:60
33:3 38:349 40:60 41:317 44:2 47:4
52:4 55:3 56:3 57:23 58:473 59:403
60:367 61:973 62:940 63:2010 64:3228 65:2376
66:3501 67:803 68:670 69:1998 70:449 71:104
72:1428 73:5 74:662 75:260 76:127 77:352
78:161 80:832 81:836 82:568 83:363 84:610
85:827 86:341 87:516 88:280 89:994 90:24
91:556 97:6 101:1 116:357 117:172 118:18
121:299 122:614 123:189 124:669 125:1003 128:271
129:213 130:137 131:366 132:55 133:9 134:197
135:34 136:188 137:82 138:153 139:73 140:505
141:177 142:384 143:256 144:306 145:46 146:331
147:124 148:414 149:148 150:95 151:158 152:89
153:119 154:3 155:259 156:161 157:219 158:160
159:173 160:133 161:102 162:174 163:182 164:487
165:395 166:284 167:298 168:499 169:121 170:389
171:22 172:2 189:73 190:1105 192:5702 193:3949
194:3200 195:2301 196:968 198:3829 199:3208 200:5279
201:1195 202:7396 203:7733 204:3917 205:1985 206:2415
207:2852 208:2845 209:3470 210:2452 211:1086 212:1310
213:1485 214:416 215:45 216:4011 217:1193 218:321
219:371 220:1003 221:413 222:260
End of report
