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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 15 May, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 255928
Prefixes after maximum aggregation: 127136
Deaggregation factor: 2.01
Unique aggregates announced to Internet: 123954
Total ASes present in the Internet Routing Table: 28178
Prefixes per ASN: 9.08
Origin-only ASes present in the Internet Routing Table: 24579
Origin ASes announcing only one prefix: 11419
Transit ASes present in the Internet Routing Table: 3599
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: 25
Max AS path prepend of ASN (39375) 13
Prefixes from unregistered ASNs in the Routing Table: 25481
Unregistered ASNs in the Routing Table: 1886
Number of 32-bit ASNs allocated by the RIRs: 46
Prefixes from 32-bit ASNs in the Routing Table: 9
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 789
Number of addresses announced to Internet: 1851597216
Equivalent to 110 /8s, 93 /16s and 33 /24s
Percentage of available address space announced: 50.0
Percentage of allocated address space announced: 61.3
Percentage of available address space allocated: 81.4
Percentage of address space in use by end-sites: 71.8
Total number of prefixes smaller than registry allocations: 123332
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 43206
Total APNIC prefixes after maximum aggregation: 13454
APNIC Deaggregation factor: 3.21
Prefixes being announced from the APNIC address blocks: 55651
Unique aggregates announced from the APNIC address blocks: 23794
APNIC Region origin ASes present in the Internet Routing Table: 1939
APNIC Prefixes per ASN: 28.70
APNIC Region origin ASes announcing only one prefix: 543
APNIC Region transit ASes present in the Internet Routing Table: 353
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 348834272
Equivalent to 20 /8s, 202 /16s and 201 /24s
Percentage of available APNIC address space announced: 80.0
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079
APNIC Address Blocks 58/8, 59/8, 60/8, 61/8, 114/8, 115/8, 116/8,
117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8,
124/8, 125/8, 126/8, 202/8, 203/8, 210/8, 211/8,
218/8, 219/8, 220/8, 221/8, 222/8,
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 108070
Total ARIN prefixes after maximum aggregation: 59255
ARIN Deaggregation factor: 1.82
Prefixes being announced from the ARIN address blocks: 87106
Unique aggregates announced from the ARIN address blocks: 34205
ARIN Region origin ASes present in the Internet Routing Table: 11814
ARIN Prefixes per ASN: 7.37
ARIN Region origin ASes announcing only one prefix: 4617
ARIN Region transit ASes present in the Internet Routing Table: 1039
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 357912704
Equivalent to 21 /8s, 85 /16s and 80 /24s
Percentage of available ARIN address space announced: 73.6
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, 46080-47103
ARIN Address Blocks 24/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8,
69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8,
76/8, 96/8, 97/8, 98/8, 99/8, 173/8, 174/8,
199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8,
216/8,
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 55275
Total RIPE prefixes after maximum aggregation: 33682
RIPE Deaggregation factor: 1.64
Prefixes being announced from the RIPE address blocks: 50477
Unique aggregates announced from the RIPE address blocks: 33746
RIPE Region origin ASes present in the Internet Routing Table: 11322
RIPE Prefixes per ASN: 4.46
RIPE Region origin ASes announcing only one prefix: 5910
RIPE Region transit ASes present in the Internet Routing Table: 1717
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 356234368
Equivalent to 21 /8s, 59 /16s and 180 /24s
Percentage of available RIPE address space announced: 81.7
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, 47104 - 48127
RIPE Address Blocks 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8,
83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8,
90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 193/8,
194/8, 195/8, 212/8, 213/8, 217/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 20006
Total LACNIC prefixes after maximum aggregation: 5001
LACNIC Deaggregation factor: 4.00
Prefixes being announced from the LACNIC address blocks: 18452
Unique aggregates announced from the LACNIC address blocks: 9955
LACNIC Region origin ASes present in the Internet Routing Table: 899
LACNIC Prefixes per ASN: 20.53
LACNIC Region origin ASes announcing only one prefix: 275
LACNIC Region transit ASes present in the Internet Routing Table: 154
Average LACNIC Region AS path length visible: 4.1
Max LACNIC Region AS path length visible: 25
Number of LACNIC addresses announced to Internet: 51232512
Equivalent to 3 /8s, 13 /16s and 191 /24s
Percentage of available LACNIC address space announced: 50.9
LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks 186/8, 187/8, 189/8, 190/8, 200/8, 201/8,
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 3890
Total AfriNIC prefixes after maximum aggregation: 1187
AfriNIC Deaggregation factor: 3.28
Prefixes being announced from the AfriNIC address blocks: 4210
Unique aggregates announced from the AfriNIC address blocks: 1852
AfriNIC Region origin ASes present in the Internet Routing Table: 241
AfriNIC Prefixes per ASN: 17.47
AfriNIC Region origin ASes announcing only one prefix: 74
AfriNIC Region transit ASes present in the Internet Routing Table: 48
Average AfriNIC Region AS path length visible: 3.8
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 12207872
Equivalent to 0 /8s, 186 /16s and 71 /24s
Percentage of available AfriNIC address space announced: 36.4
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 1638 387 91 Videsh Sanchar Nigam Ltd. Aut
9498 1175 550 61 BHARTI BT INTERNET LTD.
9583 1150 140 15 Sify Limited
17488 1064 70 76 Hathway IP Over Cable Interne
4134 854 12629 318 CHINANET-BACKBONE
4766 848 6006 343 Korea Telecom (KIX)
18101 678 149 53 Reliance Infocom Ltd Internet
9829 598 450 12 BSNL National Internet Backbo
1221 544 1918 418 Telstra Pty Ltd
4808 521 837 132 CNCGROUP IP network: China169
Complete listing at http://thyme.apnic.net/current/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4323 1423 1014 378 Time Warner Telecom
2386 1410 643 871 AT&T Data Communications Serv
7018 1396 5976 993 AT&T WorldNet Services
11492 1217 147 12 Cable One
7011 1083 317 615 Citizens Utilities
18566 1044 296 10 Covad Communications
6197 1028 630 542 BellSouth Network Solutions,
1785 1016 510 105 AppliedTheory Corporation
174 975 6836 804 Cogent Communications
22773 950 2394 62 Cox Communications, Inc.
Complete listing at http://thyme.apnic.net/current/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
9198 428 74 9 Kazakhtelecom Data Network Ad
3292 409 1788 369 TDC Tele Danmark
8452 356 188 7 TEDATA
3301 338 1458 306 TeliaNet Sweden
3320 318 7044 267 Deutsche Telekom AG
8866 297 77 22 Bulgarian Telecommunication C
5462 292 666 26 Telewest Broadband
8551 282 269 37 Bezeq International
3215 279 2686 90 France Telecom Transpac
680 275 2047 265 DFN-IP service G-WiN
Complete listing at http://thyme.apnic.net/current/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 1219 2464 229 UniNet S.A. de C.V.
11830 601 299 9 Instituto Costarricense de El
22047 566 270 14 VTR PUNTO NET S.A.
7303 460 226 61 Telecom Argentina Stet-France
16814 426 27 10 NSS, S.A.
6471 419 85 46 ENTEL CHILE S.A.
11172 410 117 67 Servicios Alestra S.A de C.V
10620 390 99 69 TVCABLE BOGOTA
14117 375 23 9 Telefonica del Sur S.A.
20299 334 36 31 NEWCOM AMERICAS
Complete listing at http://thyme.apnic.net/current/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
24863 470 61 28 LINKdotNET AS number
3741 289 853 223 The Internet Solution
20858 221 34 3 EgyNet
2018 181 173 82 Tertiary Education Network
5713 174 575 108 Telkom SA Ltd
6713 143 135 11 Itissalat Al-MAGHRIB
33783 134 10 12 EEPAD TISP TELECOM & INTERNET
5536 121 8 16 Internet Egypt Network
29571 116 13 8 Ci Telecom Autonomous system
33776 99 6 7 Starcomms Nigeria Limited
Complete listing at http://thyme.apnic.net/current/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3100 3037 123 bellsouth.net, inc.
4755 1638 387 91 Videsh Sanchar Nigam Ltd. Aut
23577 1634 34 697 Korea Telecom (ATM-MPLS)
4323 1423 1014 378 Time Warner Telecom
2386 1410 643 871 AT&T Data Communications Serv
7018 1396 5976 993 AT&T WorldNet Services
8151 1219 2464 229 UniNet S.A. de C.V.
11492 1217 147 12 Cable One
9498 1175 550 61 BHARTI BT INTERNET LTD.
9583 1150 140 15 Sify Limited
Complete listing at http://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4755 1638 1547 Videsh Sanchar Nigam Ltd. Aut
11492 1217 1205 Cable One
9583 1150 1135 Sify Limited
9498 1175 1114 BHARTI BT INTERNET LTD.
4323 1423 1045 Time Warner Telecom
18566 1044 1034 Covad Communications
8151 1219 990 UniNet S.A. de C.V.
17488 1064 988 Hathway IP Over Cable Interne
17676 1016 951 Softbank BB Corp.
23577 1634 937 Korea Telecom (ATM-MPLS)
Complete listing at http://thyme.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
14780 UNALLOCATED 4.79.181.0/24 10310 Yahoo!
12180 UNALLOCATED 4.79.248.0/24 1239 Sprint
12180 UNALLOCATED 8.10.16.0/24 3549 Global Crossing
12180 UNALLOCATED 8.10.58.0/23 3549 Global Crossing
14779 UNALLOCATED 8.12.144.0/24 10310 Yahoo!
16927 UNALLOCATED 12.0.252.0/23 701 UUNET Technologies,
22492 UNALLOCATED 12.2.46.0/24 7018 AT&T WorldNet Servic
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.14.170.0/24 7018 AT&T WorldNet Servic
13632 UNALLOCATED 12.20.55.0/24 6517 Yipes Communications
Complete listing at http://thyme.apnic.net/current/data-badAS
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
24.51.159.0/24 7843 Adelphia Corp.
24.54.224.0/19 20001 HoldCo LLC - Road Runner
24.75.160.0/19 7843 Adelphia Corp.
24.75.192.0/18 7843 Adelphia Corp.
24.142.40.0/21 7018 AT&T WorldNet Services
24.142.160.0/19 7018 AT&T WorldNet Services
24.246.0.0/17 7018 AT&T WorldNet Services
24.246.128.0/18 7018 AT&T WorldNet Services
62.61.220.0/24 24974 Tachyon Europe BV - Wireless
63.140.213.0/24 22555 Universal Talkware Corporatio
Complete listing at http://thyme.apnic.net/current/data-add-IANA
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 /10:16 /11:40 /12:140
/13:280 /14:509 /15:1003 /16:9903 /17:4364 /18:7298
/19:15426 /20:17873 /21:17302 /22:21756 /23:22947 /24:134770
/25:768 /26:922 /27:485 /28:81 /29:9 /30:1
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1200 1217 Cable One
2386 1110 1410 AT&T Data Communications Serv
18566 1025 1044 Covad Communications
9583 988 1150 Sify Limited
4755 984 1638 Videsh Sanchar Nigam Ltd. Aut
6389 967 3100 bellsouth.net, inc.
7011 966 1083 Citizens Utilities
6478 942 943 AT&T Worldnet Services
17488 877 1064 Hathway IP Over Cable Interne
9498 850 1175 BHARTI BT INTERNET LTD.
Complete listing at http://thyme.apnic.net/current/data/sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:9 8:108 12:2039 13:1 15:20 16:3
17:5 18:13 20:35 24:1067 25:1 32:61
33:3 38:420 40:93 41:672 44:2 47:12
52:3 55:3 56:3 57:23 58:520 59:458
60:442 61:980 62:1100 63:1957 64:3405 65:2431
66:3647 67:1182 68:659 69:2223 70:602 71:124
72:1668 73:6 74:964 75:238 76:305 77:656
78:613 79:149 80:882 81:866 82:618 83:390
84:559 85:1009 86:410 87:656 88:340 89:1295
90:11 91:1223 92:275 93:447 96:29 97:14
98:164 99:3 114:4 116:641 117:327 118:132
119:388 120:39 121:534 122:766 123:348 124:848
125:1133 128:322 129:198 130:129 131:402 132:66
133:9 134:180 135:33 136:220 137:113 138:146
139:64 140:488 141:95 142:389 143:288 144:350
145:50 146:364 147:152 148:494 149:183 150:131
151:183 152:141 153:134 154:10 155:271 156:174
157:267 158:163 159:221 160:257 161:111 162:214
163:198 164:521 165:445 166:304 167:320 168:620
169:131 170:426 171:28 172:22 189:166 190:1923
192:5778 193:4105 194:3261 195:2429 196:1077 198:3738
199:3243 200:5666 201:1455 202:7589 203:7820 204:4002
205:2072 206:2396 207:2743 208:3329 209:3428 210:2515
211:1029 212:1375 213:1653 214:456 215:50 216:4353
217:1207 218:348 219:412 220:1073 221:469 222:307
End of report
