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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 24 Aug, 2007
Report Website: http://thyme.apnic.net
This report: http://thyme.apnic.net/ap-data/2007/08/24/0400
Analysis Summary
----------------
BGP routing table entries examined: 229543
Prefixes after maximum aggregation: 119806
Deaggregation factor: 1.92
Unique aggregates announced to Internet: 110345
Total ASes present in the Internet Routing Table: 26026
Prefixes per ASN: 8.82
Origin-only ASes present in the Internet Routing Table: 22663
Origin ASes announcing only one prefix: 11038
Transit ASes present in the Internet Routing Table: 3363
Transit-only ASes present in the Internet Routing Table: 74
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: 5
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: 1753925728
Equivalent to 104 /8s, 138 /16s and 200 /24s
Percentage of available address space announced: 47.3
Percentage of allocated address space announced: 62.0
Percentage of available address space allocated: 76.4
Total number of prefixes smaller than registry allocations: 121678
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 53777
Total APNIC prefixes after maximum aggregation: 20456
APNIC Deaggregation factor: 2.63
Prefixes being announced from the APNIC address blocks: 50692
Unique aggregates announced from the APNIC address blocks: 21265
APNIC Region origin ASes present in the Internet Routing Table: 3041
APNIC Prefixes per ASN: 16.67
APNIC Region origin ASes announcing only one prefix: 812
APNIC Region transit ASes present in the Internet Routing Table: 464
Average APNIC Region AS path length visible: 3.7
Max APNIC Region AS path length visible: 19
Number of APNIC addresses announced to Internet: 312850336
Equivalent to 18 /8s, 165 /16s and 183 /24s
Percentage of available APNIC address space announced: 77.5
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: 108523
Total ARIN prefixes after maximum aggregation: 62789
ARIN Deaggregation factor: 1.73
Prefixes being announced from the ARIN address blocks: 79878
Unique aggregates announced from the ARIN address blocks: 31795
ARIN Region origin ASes present in the Internet Routing Table: 11772
ARIN Prefixes per ASN: 6.79
ARIN Region origin ASes announcing only one prefix: 4525
ARIN Region transit ASes present in the Internet Routing Table: 1078
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 14
Number of ARIN addresses announced to Internet: 342667776
Equivalent to 20 /8s, 108 /16s and 178 /24s
Percentage of available ARIN address space announced: 75.6
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: 48182
Total RIPE prefixes after maximum aggregation: 31117
RIPE Deaggregation factor: 1.55
Prefixes being announced from the RIPE address blocks: 44570
Unique aggregates announced from the RIPE address blocks: 29341
RIPE Region origin ASes present in the Internet Routing Table: 10084
RIPE Prefixes per ASN: 4.42
RIPE Region origin ASes announcing only one prefix: 5360
RIPE Region transit ASes present in the Internet Routing Table: 1608
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 21
Number of RIPE addresses announced to Internet: 324385408
Equivalent to 19 /8s, 85 /16s and 186 /24s
Percentage of available RIPE address space announced: 74.4
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, 80/4, 193/8, 194/7, 212/7
and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 16332
Total LACNIC prefixes after maximum aggregation: 4402
LACNIC Deaggregation factor: 3.71
Prefixes being announced from the LACNIC address blocks: 14472
Unique aggregates announced from the LACNIC address blocks: 7770
LACNIC Region origin ASes present in the Internet Routing Table: 848
LACNIC Prefixes per ASN: 17.07
LACNIC Region origin ASes announcing only one prefix: 272
LACNIC Region transit ASes present in the Internet Routing Table: 144
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 42034688
Equivalent to 2 /8s, 129 /16s and 102 /24s
Percentage of available LACNIC address space announced: 62.6
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: 2718
Total AfriNIC prefixes after maximum aggregation: 1030
AfriNIC Deaggregation factor: 2.64
Prefixes being announced from the AfriNIC address blocks: 2258
Unique aggregates announced from the AfriNIC address blocks: 1339
AfriNIC Region origin ASes present in the Internet Routing Table: 206
AfriNIC Prefixes per ASN: 10.96
AfriNIC Region origin ASes announcing only one prefix: 69
AfriNIC Region transit ASes present in the Internet Routing Table: 33
Average AfriNIC Region AS path length visible: 3.9
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 7438592
Equivalent to 0 /8s, 113 /16s and 129 /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
4134 1335 11142 288 CHINANET-BACKBONE
4755 1335 383 73 Videsh Sanchar Nigam Ltd. Aut
9583 1132 108 17 Sify Limited
9498 1001 533 70 BHARTI BT INTERNET LTD.
4766 796 5440 315 Korea Telecom (KIX)
23577 786 34 683 Korea Telecom (ATM-MPLS)
17488 771 50 51 Hathway IP Over Cable Interne
7545 733 159 121 TPG Internet Pty Ltd
18101 592 119 48 Reliance Infocom Ltd Internet
4812 547 968 96 China Telecom (Shanghai)
1221 543 1951 424 Telstra Pty Ltd
4668 516 68 10 LG-EDS Systems Inc.
17676 503 10919 64 Softbank BB Corp.
4808 475 768 107 CNCGROUP IP network: China169
9443 464 122 77 Primus Telecommunications
4802 429 116 155 Wantree Development
7474 379 216 267 SingTel Optus Pty Ltd
4837 366 5104 167 chinanet IDC center beijing n
9829 363 258 14 BSNL National Internet Backbo
17974 363 130 13 PT TELEKOMUNIKASI INDONESIA
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1479 6076 994 AT&T WorldNet Services
4323 1325 1007 372 Time Warner Telecom
2386 1213 617 748 AT&T Data Communications Serv
6478 1140 322 133 AT&T Worldnet Services
11492 1135 110 16 Cable One
6197 1028 718 510 BellSouth Network Solutions,
18566 1020 288 9 Covad Communications
174 970 6780 860 Cogent Communications
701 948 6579 727 UUNET Technologies, Inc.
7011 915 261 552 Citizens Utilities
20115 815 748 434 Charter Communications
1239 792 2720 561 Sprint
19262 766 2743 185 Verizon Global Networks
22773 758 2148 49 Cox Communications, Inc.
209 736 3820 581 Qwest
5668 629 171 24 CenturyTel Internet Holdings,
6517 588 165 37 Yipes Communications, Inc.
852 577 1096 362 Telus Advanced Communications
855 569 254 73 Canadian Research Network
19916 568 49 51 OLM LLC
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
2119 505 918 378 Telenor Internet Access
702 503 1922 404 UUNET - Commercial IP service
24863 366 57 40 LINKdotNET AS number
9116 337 168 26 Goldenlines main autonomous s
3301 314 1456 293 TeliaNet Sweden
3320 313 6035 260 Deutsche Telekom AG
6746 288 130 264 Dynamic Network Technologies,
680 265 2061 256 DFN-IP service G-WiN
8708 262 420 241 Romania Data Systems S.A.
8220 260 445 243 COLT Telecommunications
3215 258 2424 98 France Telecom Transpac
8551 232 228 27 Bezeq International
3352 226 1868 38 Ibernet, Internet Access Netw
3269 221 2775 73 TELECOM ITALIA
9121 213 1441 24 TTnet Autonomous System
3292 195 1379 175 TDC Tele Danmark
12479 193 578 6 Uni2 Autonomous System
1257 192 1195 170 SWIPnet Swedish IP Network
3300 192 172 93 AUCS Communications Services
3246 186 252 177 Song Networks
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 918 1973 212 UniNet S.A. de C.V.
11830 483 299 9 Instituto Costarricense de El
16814 426 26 9 NSS, S.A.
11172 375 115 61 Servicios Alestra S.A de C.V
7303 334 175 42 Telecom Argentina Stet-France
14522 334 28 7 SatNet S.A.
6471 322 75 33 ENTEL CHILE S.A.
22047 318 246 13 VTR PUNTO NET S.A.
14117 281 19 15 Telefonica del Sur S.A.
10481 278 104 9 Prima S.A.
11556 237 128 4 Cable-Wireless Panama
6147 227 178 24 Telefonica Del Peru
10620 218 61 20 TVCABLE BOGOTA
6503 202 171 83 AVANTEL, S.A.
23216 195 16 43 RAMtelecom Telecomunicaciones
20299 178 25 31 NEWCOM AMERICAS
8163 177 11 6 METROTEL REDES S.A.
19169 164 12 15 Telconet
21826 163 29 59 INTERCABLE
7738 160 506 23 Telecomunicacoes da Bahia S.A
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 282 867 223 The Internet Solution
8452 235 188 7 TEDATA
6713 142 135 11 Itissalat Al-MAGHRIB
2018 140 301 115 Tertiary Education Network
5536 124 8 10 Internet Egypt Network
33783 124 8 12 EEPAD TISP TELECOM & INTERNET
33776 99 6 8 Starcomms Nigeria Limited
24835 88 48 7 RAYA Telecom - Egypt
15475 76 84 4 Nile Online
2905 74 174 71 The Internetworking Company o
2561 62 6 2 Egyptian Universities Network
15706 52 12 4 Sudatel Internet Exchange Aut
23889 52 24 15 MAURITIUS TELECOM
5713 46 294 36 Telkom SA Ltd
16637 46 21 29 Johnnic e-Ventures
33774 46 29 24 AS Number for Telecom Algeria
8524 31 2 10 AUCEGYPT Autonomous System
21280 30 4 4 Swift Global Kenya Ltd.Is an
12455 29 6 3 Jambonet Autonomous system
10798 27 16 1 Standard Bank of South Africa
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4755 1335 1262 Videsh Sanchar Nigam Ltd. Aut
11492 1135 1119 Cable One
9583 1132 1115 Sify Limited
4134 1335 1047 CHINANET-BACKBONE
18566 1020 1011 Covad Communications
6478 1140 1007 AT&T Worldnet Services
4323 1325 953 Time Warner Telecom
9498 1001 931 BHARTI BT INTERNET LTD.
17488 771 720 Hathway IP Over Cable Interne
22773 758 709 Cox Communications, Inc.
8151 918 706 UniNet S.A. de C.V.
7545 733 612 TPG Internet Pty Ltd
5668 629 605 CenturyTel Internet Holdings,
19262 766 581 Verizon Global Networks
6517 588 551 Yipes Communications, Inc.
18101 592 544 Reliance Infocom Ltd Internet
15270 567 529 PaeTec.net -a division of Pae
6197 1028 518 BellSouth Network Solutions,
19916 568 517 OLM LLC
4668 516 506 LG-EDS Systems Inc.
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
64539 PRIVATE 170.213.128.0/24 7132 SBC Internet Service
64539 PRIVATE 170.213.129.0/24 7132 SBC Internet Service
64539 PRIVATE 170.213.132.0/24 7132 SBC Internet Service
64501 RESERVED 195.189.160.0/24 35041 Crystone Autonomous
24410 UNALLOCATED 203.119.28.0/24 4134 CHINANET-BACKBONE
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 /10:15 /11:36 /12:134
/13:260 /14:470 /15:920 /16:9609 /17:4061 /18:6577
/19:13912 /20:16121 /21:14883 /22:19181 /23:20140 /24:120790
/25:778 /26:1031 /27:504 /28:81 /29:5 /30:0
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6478 1139 1140 AT&T Worldnet Services
11492 1128 1135 Cable One
18566 1002 1020 Covad Communications
9583 965 1132 Sify Limited
2386 907 1213 AT&T Data Communications Serv
7018 817 1479 AT&T WorldNet Services
7011 812 915 Citizens Utilities
6197 781 1028 BellSouth Network Solutions,
23577 777 786 Korea Telecom (ATM-MPLS)
4755 719 1335 Videsh Sanchar Nigam Ltd. Aut
9498 670 1001 BHARTI BT INTERNET LTD.
4766 594 796 Korea Telecom (KIX)
17488 594 771 Hathway IP Over Cable Interne
19916 563 568 OLM LLC
4323 557 1325 Time Warner Telecom
6517 554 588 Yipes Communications, Inc.
15270 531 567 PaeTec.net -a division of Pae
4668 506 516 LG-EDS Systems Inc.
18101 499 592 Reliance Infocom Ltd Internet
5668 494 629 CenturyTel Internet Holdings,
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:8 7:1 8:88 12:1814 13:1 15:19
16:3 17:3 18:13 20:37 24:963 25:1
32:56 33:3 38:346 40:60 41:311 44:2
47:4 52:4 55:3 56:3 57:25 58:468
59:385 60:364 61:1007 62:937 63:1999 64:3174
65:2365 66:3403 67:780 68:649 69:1963 70:445
71:104 72:1383 73:2 74:634 75:261 76:126
77:292 78:44 80:832 81:832 82:663 83:378
84:589 85:857 86:339 87:487 88:281 89:981
90:25 91:494 97:5 116:287 117:137 121:266
122:592 123:156 124:672 125:990 126:1 128:276
129:214 130:140 131:363 132:56 133:9 134:198
135:34 136:189 137:81 138:149 139:72 140:495
141:173 142:378 143:256 144:298 145:46 146:326
147:123 148:409 149:142 150:111 151:159 152:88
153:122 154:3 155:263 156:161 157:214 158:158
159:168 160:113 161:96 162:186 163:180 164:480
165:394 166:275 167:297 168:510 169:122 170:390
171:22 172:2 189:70 190:980 192:5744 193:3967
194:3184 195:2279 196:984 198:3810 199:3275 200:5137
201:1165 202:7393 203:7660 204:3929 205:1976 206:2414
207:2805 208:2782 209:3482 210:2455 211:1086 212:1329
213:1465 214:420 215:41 216:3982 217:1180 218:360
219:381 220:1020 221:412 222:265
End of report
