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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Mon 20 Aug, 2007
Report Website: http://thyme.apnic.net
This report: http://thyme.apnic.net/ap-data/2007/08/20/0400
Analysis Summary
----------------
BGP routing table entries examined: 229069
Prefixes after maximum aggregation: 120047
Deaggregation factor: 1.91
Unique aggregates announced to Internet: 111305
Total ASes present in the Internet Routing Table: 25977
Prefixes per ASN: 8.82
Origin-only ASes present in the Internet Routing Table: 22625
Origin ASes announcing only one prefix: 11036
Transit ASes present in the Internet Routing Table: 3352
Transit-only ASes present in the Internet Routing Table: 75
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: 2
Prefixes from 32-bit 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: 1751595744
Equivalent to 104 /8s, 103 /16s and 58 /24s
Percentage of available address space announced: 47.3
Percentage of allocated address space announced: 61.9
Percentage of available address space allocated: 76.4
Total number of prefixes smaller than registry allocations: 121322
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 53596
Total APNIC prefixes after maximum aggregation: 20813
APNIC Deaggregation factor: 2.58
Prefixes being announced from the APNIC address blocks: 50519
Unique aggregates announced from the APNIC address blocks: 22248
APNIC Region origin ASes present in the Internet Routing Table: 3036
APNIC Prefixes per ASN: 16.64
APNIC Region origin ASes announcing only one prefix: 819
APNIC Region transit ASes present in the Internet Routing Table: 464
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 18
Number of APNIC addresses announced to Internet: 311802016
Equivalent to 18 /8s, 149 /16s and 184 /24s
Percentage of available APNIC address space announced: 77.2
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: 108310
Total ARIN prefixes after maximum aggregation: 62746
ARIN Deaggregation factor: 1.73
Prefixes being announced from the ARIN address blocks: 79728
Unique aggregates announced from the ARIN address blocks: 31848
ARIN Region origin ASes present in the Internet Routing Table: 11756
ARIN Prefixes per ASN: 6.78
ARIN Region origin ASes announcing only one prefix: 4528
ARIN Region transit ASes present in the Internet Routing Table: 1074
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 342088192
Equivalent to 20 /8s, 99 /16s and 218 /24s
Percentage of available ARIN address space announced: 75.5
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: 48202
Total RIPE prefixes after maximum aggregation: 31045
RIPE Deaggregation factor: 1.55
Prefixes being announced from the RIPE address blocks: 44588
Unique aggregates announced from the RIPE address blocks: 29277
RIPE Region origin ASes present in the Internet Routing Table: 10059
RIPE Prefixes per ASN: 4.43
RIPE Region origin ASes announcing only one prefix: 5346
RIPE Region transit ASes present in the Internet Routing Table: 1603
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 21
Number of RIPE addresses announced to Internet: 323989376
Equivalent to 19 /8s, 79 /16s and 175 /24s
Percentage of available RIPE address space announced: 74.3
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
40960-44031
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: 16239
Total LACNIC prefixes after maximum aggregation: 4395
LACNIC Deaggregation factor: 3.69
Prefixes being announced from the LACNIC address blocks: 14387
Unique aggregates announced from the LACNIC address blocks: 7733
LACNIC Region origin ASes present in the Internet Routing Table: 846
LACNIC Prefixes per ASN: 17.01
LACNIC Region origin ASes announcing only one prefix: 277
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: 41986816
Equivalent to 2 /8s, 128 /16s and 171 /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: 2712
Total AfriNIC prefixes after maximum aggregation: 1038
AfriNIC Deaggregation factor: 2.61
Prefixes being announced from the AfriNIC address blocks: 2237
Unique aggregates announced from the AfriNIC address blocks: 1346
AfriNIC Region origin ASes present in the Internet Routing Table: 204
AfriNIC Prefixes per ASN: 10.97
AfriNIC Region origin ASes announcing only one prefix: 66
AfriNIC Region transit ASes present in the Internet Routing Table: 32
Average AfriNIC Region AS path length visible: 3.9
Max AfriNIC Region AS path length visible: 15
Number of AfriNIC addresses announced to Internet: 7378432
Equivalent to 0 /8s, 112 /16s and 150 /24s
Percentage of available AfriNIC address space announced: 22.0
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 1332 11140 287 CHINANET-BACKBONE
4755 1323 382 71 Videsh Sanchar Nigam Ltd. Aut
9583 1125 80 404 Sify Limited
9498 998 533 68 BHARTI BT INTERNET LTD.
4766 797 5440 315 Korea Telecom (KIX)
23577 789 34 686 Korea Telecom (ATM-MPLS)
17488 763 50 46 Hathway IP Over Cable Interne
7545 699 150 115 TPG Internet Pty Ltd
18101 590 118 45 Reliance Infocom Ltd Internet
1221 543 1951 424 Telstra Pty Ltd
4812 543 979 98 China Telecom (Shanghai)
4668 516 68 10 LG-EDS Systems Inc.
17676 503 10919 64 Softbank BB Corp.
4808 476 768 107 CNCGROUP IP network: China169
9443 473 122 77 Primus Telecommunications
4802 426 116 153 Wantree Development
7474 395 217 269 SingTel Optus Pty Ltd
17974 364 130 13 PT TELEKOMUNIKASI INDONESIA
9829 363 258 14 BSNL National Internet Backbo
4837 354 4944 165 chinanet IDC center beijing n
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1478 6076 993 AT&T WorldNet Services
4323 1332 1007 373 Time Warner Telecom
2386 1210 616 745 AT&T Data Communications Serv
11492 1125 109 32 Cable One
6478 1116 322 140 AT&T Worldnet Services
6197 1027 718 508 BellSouth Network Solutions,
18566 1019 288 9 Covad Communications
174 970 6780 860 Cogent Communications
701 947 6564 725 UUNET Technologies, Inc.
7011 912 261 549 Citizens Utilities
20115 805 741 430 Charter Communications
1239 797 2721 565 Sprint
19262 763 2721 182 Verizon Global Networks
22773 754 2148 49 Cox Communications, Inc.
209 731 3835 580 Qwest
5668 628 171 24 CenturyTel Internet Holdings,
6517 584 163 36 Yipes Communications, Inc.
852 579 1096 364 Telus Advanced Communications
855 570 254 73 Canadian Research Network
6198 569 613 259 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
2119 506 918 378 Telenor Internet Access
702 503 1922 404 UUNET - Commercial IP service
24863 362 57 41 LINKdotNET AS number
9116 344 168 26 Goldenlines main autonomous s
3301 313 1456 293 TeliaNet Sweden
3320 313 6035 260 Deutsche Telekom AG
6746 287 130 263 Dynamic Network Technologies,
5089 269 1658 54 NTL Group Limited
680 265 2061 256 DFN-IP service G-WiN
8220 261 445 244 COLT Telecommunications
8708 260 420 241 Romania Data Systems S.A.
3215 256 2392 97 France Telecom Transpac
8551 232 228 27 Bezeq International
3352 225 1868 38 Ibernet, Internet Access Netw
3269 221 2775 73 TELECOM ITALIA
9121 210 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
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 919 1944 221 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.
22047 318 246 13 VTR PUNTO NET S.A.
6471 317 75 32 ENTEL CHILE S.A.
14117 281 19 15 Telefonica del Sur S.A.
10481 278 104 9 Prima S.A.
11556 235 128 3 Cable-Wireless Panama
6147 226 176 27 Telefonica Del Peru
10620 217 61 26 TVCABLE BOGOTA
6503 199 155 81 AVANTEL, S.A.
23216 195 16 43 RAMtelecom Telecomunicaciones
8163 177 11 6 METROTEL REDES S.A.
19169 170 12 18 Telconet
21826 162 28 61 INTERCABLE
20299 161 24 20 NEWCOM AMERICAS
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 234 188 7 TEDATA
6713 142 135 11 Itissalat Al-MAGHRIB
2018 140 301 115 Tertiary Education Network
33783 126 8 11 EEPAD TISP TELECOM & INTERNET
5536 124 8 10 Internet Egypt Network
33776 99 6 8 Starcomms Nigeria Limited
24835 87 48 6 RAYA Telecom - Egypt
15475 79 84 4 Nile Online
2905 75 174 72 The Internetworking Company o
2561 62 6 2 Egyptian Universities Network
15706 56 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 29 4 4 Swift Global Kenya Ltd.Is an
12455 26 6 3 Jambonet Autonomous system
10798 25 2 16 Standard Bank of South Africa
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4755 1323 1252 Videsh Sanchar Nigam Ltd. Aut
11492 1125 1093 Cable One
4134 1332 1045 CHINANET-BACKBONE
18566 1019 1010 Covad Communications
6478 1116 976 AT&T Worldnet Services
4323 1332 959 Time Warner Telecom
9498 998 930 BHARTI BT INTERNET LTD.
9583 1125 721 Sify Limited
17488 763 717 Hathway IP Over Cable Interne
22773 754 705 Cox Communications, Inc.
8151 919 698 UniNet S.A. de C.V.
5668 628 604 CenturyTel Internet Holdings,
7545 699 584 TPG Internet Pty Ltd
19262 763 581 Verizon Global Networks
6517 584 548 Yipes Communications, Inc.
18101 590 545 Reliance Infocom Ltd Internet
15270 567 529 PaeTec.net -a division of Pae
6197 1027 519 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
64513 PRIVATE 63.171.234.0/26 1803 SPRINT
64513 PRIVATE 63.171.234.64/26 1803 SPRINT
64513 PRIVATE 63.171.234.128/26 1803 SPRINT
64513 PRIVATE 63.171.234.192/26 1803 SPRINT
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
/13:257 /14:470 /15:918 /16:9588 /17:4053 /18:6572
/19:13883 /20:16157 /21:14814 /22:19115 /23:20074 /24:120554
/25:777 /26:1029 /27:503 /28:80 /29:5 /30:0
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1117 1125 Cable One
6478 1115 1116 AT&T Worldnet Services
18566 1001 1019 Covad Communications
9583 967 1125 Sify Limited
2386 904 1210 AT&T Data Communications Serv
7018 816 1478 AT&T WorldNet Services
7011 809 912 Citizens Utilities
6197 781 1027 BellSouth Network Solutions,
23577 780 789 Korea Telecom (ATM-MPLS)
4755 710 1323 Videsh Sanchar Nigam Ltd. Aut
9498 667 998 BHARTI BT INTERNET LTD.
4766 594 797 Korea Telecom (KIX)
17488 586 763 Hathway IP Over Cable Interne
19916 563 568 OLM LLC
4323 561 1332 Time Warner Telecom
6517 548 584 Yipes Communications, Inc.
15270 531 567 PaeTec.net -a division of Pae
4668 506 516 LG-EDS Systems Inc.
18101 499 590 Reliance Infocom Ltd Internet
5668 493 628 CenturyTel Internet Holdings,
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:8 7:1 8:88 12:1792 13:1 15:19
16:3 17:3 18:13 20:37 24:954 25:1
32:56 33:3 38:346 40:60 41:305 44:2
47:4 52:4 55:3 56:3 57:25 58:468
59:386 60:360 61:997 62:940 63:1992 64:3165
65:2364 66:3384 67:764 68:646 69:1937 70:442
71:104 72:1381 73:2 74:625 75:258 76:124
77:283 78:36 80:832 81:831 82:651 83:380
84:593 85:852 86:341 87:484 88:285 89:967
90:22 91:487 97:6 116:278 117:133 121:262
122:595 123:153 124:842 125:982 126:1 128:290
129:214 130:139 131:359 132:55 133:9 134:198
135:34 136:179 137:81 138:149 139:71 140:492
141:173 142:379 143:256 144:300 145:46 146:325
147:123 148:408 149:143 150:111 151:159 152:88
153:121 154:3 155:263 156:160 157:214 158:158
159:171 160:111 161:96 162:186 163:179 164:477
165:391 166:275 167:294 168:511 169:121 170:394
171:22 172:2 189:69 190:977 192:5741 193:3959
194:3183 195:2272 196:971 198:3810 199:3270 200:5107
201:1159 202:7393 203:7625 204:3950 205:1977 206:2415
207:2810 208:2774 209:3474 210:2444 211:985 212:1341
213:1474 214:418 215:41 216:4004 217:1181 218:354
219:381 220:1017 221:416 222:266
End of report
