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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 14 May, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 255586
Prefixes after maximum aggregation: 127097
Deaggregation factor: 2.01
Unique aggregates announced to Internet: 123965
Total ASes present in the Internet Routing Table: 28157
Prefixes per ASN: 9.08
Origin-only ASes present in the Internet Routing Table: 24560
Origin ASes announcing only one prefix: 11414
Transit ASes present in the Internet Routing Table: 3597
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: 25
Max AS path prepend of ASN (39375) 13
Prefixes from unregistered ASNs in the Routing Table: 25521
Unregistered ASNs in the Routing Table: 1885
Number of 32-bit ASNs allocated by the RIRs: 46
Prefixes from 32-bit ASNs in the Routing Table: 10
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 788
Number of addresses announced to Internet: 1851217824
Equivalent to 110 /8s, 87 /16s and 87 /24s
Percentage of available address space announced: 49.9
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: 71.7
Total number of prefixes smaller than registry allocations: 123040
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 43208
Total APNIC prefixes after maximum aggregation: 13439
APNIC Deaggregation factor: 3.22
Prefixes being announced from the APNIC address blocks: 55697
Unique aggregates announced from the APNIC address blocks: 23740
APNIC Region origin ASes present in the Internet Routing Table: 1936
APNIC Prefixes per ASN: 28.77
APNIC Region origin ASes announcing only one prefix: 542
APNIC Region transit ASes present in the Internet Routing Table: 352
Average APNIC Region AS path length visible: 3.5
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 348923360
Equivalent to 20 /8s, 204 /16s and 37 /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: 107797
Total ARIN prefixes after maximum aggregation: 59230
ARIN Deaggregation factor: 1.82
Prefixes being announced from the ARIN address blocks: 86846
Unique aggregates announced from the ARIN address blocks: 34392
ARIN Region origin ASes present in the Internet Routing Table: 11802
ARIN Prefixes per ASN: 7.36
ARIN Region origin ASes announcing only one prefix: 4606
ARIN Region transit ASes present in the Internet Routing Table: 1033
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 357870976
Equivalent to 21 /8s, 84 /16s and 173 /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: 55257
Total RIPE prefixes after maximum aggregation: 33675
RIPE Deaggregation factor: 1.64
Prefixes being announced from the RIPE address blocks: 50463
Unique aggregates announced from the RIPE address blocks: 33698
RIPE Region origin ASes present in the Internet Routing Table: 11318
RIPE Prefixes per ASN: 4.46
RIPE Region origin ASes announcing only one prefix: 5914
RIPE Region transit ASes present in the Internet Routing Table: 1719
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 356697728
Equivalent to 21 /8s, 66 /16s and 198 /24s
Percentage of available RIPE address space announced: 81.8
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: 19930
Total LACNIC prefixes after maximum aggregation: 5003
LACNIC Deaggregation factor: 3.98
Prefixes being announced from the LACNIC address blocks: 18369
Unique aggregates announced from the LACNIC address blocks: 9889
LACNIC Region origin ASes present in the Internet Routing Table: 899
LACNIC Prefixes per ASN: 20.43
LACNIC Region origin ASes announcing only one prefix: 277
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: 51083264
Equivalent to 3 /8s, 11 /16s and 120 /24s
Percentage of available LACNIC address space announced: 50.7
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: 3873
Total AfriNIC prefixes after maximum aggregation: 1194
AfriNIC Deaggregation factor: 3.24
Prefixes being announced from the AfriNIC address blocks: 4195
Unique aggregates announced from the AfriNIC address blocks: 1858
AfriNIC Region origin ASes present in the Internet Routing Table: 242
AfriNIC Prefixes per ASN: 17.33
AfriNIC Region origin ASes announcing only one prefix: 75
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: 12189696
Equivalent to 0 /8s, 186 /16s and 0 /24s
Percentage of available AfriNIC address space announced: 36.3
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 1168 140 15 Sify Limited
17488 1058 70 81 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 1407 643 869 AT&T Data Communications Serv
7018 1397 5960 992 AT&T WorldNet Services
11492 1213 146 32 Cable One
7011 1083 317 615 Citizens Utilities
18566 1044 296 10 Covad Communications
6197 1029 630 543 BellSouth Network Solutions,
1785 1016 510 105 AppliedTheory Corporation
174 975 6836 804 Cogent Communications
22773 948 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 278 2686 90 France Telecom Transpac
680 272 2047 262 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 1203 2432 227 UniNet S.A. de C.V.
11830 601 299 9 Instituto Costarricense de El
22047 566 270 14 VTR PUNTO NET S.A.
7303 456 223 62 Telecom Argentina Stet-France
16814 426 27 10 NSS, S.A.
6471 419 85 46 ENTEL CHILE S.A.
11172 413 117 69 Servicios Alestra S.A de C.V
10620 390 99 69 TVCABLE BOGOTA
14117 375 23 9 Telefonica del Sur S.A.
20299 344 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 464 61 27 LINKdotNET AS number
3741 289 853 223 The Internet Solution
20858 221 34 3 EgyNet
2018 181 173 82 Tertiary Education Network
5713 174 575 109 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 115 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 3094 3037 123 bellsouth.net, inc.
23577 1642 34 701 Korea Telecom (ATM-MPLS)
4755 1638 387 91 Videsh Sanchar Nigam Ltd. Aut
4323 1423 1014 378 Time Warner Telecom
2386 1407 643 869 AT&T Data Communications Serv
7018 1397 5960 992 AT&T WorldNet Services
11492 1213 146 32 Cable One
8151 1203 2432 227 UniNet S.A. de C.V.
9498 1175 550 61 BHARTI BT INTERNET LTD.
9583 1168 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 1213 1181 Cable One
9583 1168 1153 Sify Limited
9498 1175 1114 BHARTI BT INTERNET LTD.
4323 1423 1045 Time Warner Telecom
18566 1044 1034 Covad Communications
17488 1058 977 Hathway IP Over Cable Interne
8151 1203 976 UniNet S.A. de C.V.
17676 1016 951 Softbank BB Corp.
23577 1642 941 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 /15:999 /16:9900 /17:4364 /18:7292
/19:15402 /20:17854 /21:17278 /22:21718 /23:22793 /24:134698
/25:770 /26:922 /27:487 /28:79 /29:9 /30:1
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1199 1213 Cable One
2386 1107 1407 AT&T Data Communications Serv
18566 1025 1044 Covad Communications
9583 1005 1168 Sify Limited
4755 984 1638 Videsh Sanchar Nigam Ltd. Aut
7011 966 1083 Citizens Utilities
6389 964 3094 bellsouth.net, inc.
6478 944 945 AT&T Worldnet Services
17488 871 1058 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 12:2038 13:1 15:20 16:3
17:5 18:13 20:35 24:1068 25:1 32:61
33:3 38:419 40:93 41:669 44:2 47:12
52:3 55:3 56:3 57:22 58:515 59:458
60:442 61:978 62:1096 63:1957 64:3405 65:2420
66:3636 67:1178 68:659 69:2223 70:594 71:122
72:1673 73:6 74:958 75:226 76:306 77:656
78:609 79:148 80:899 81:865 82:627 83:390
84:558 85:1010 86:411 87:656 88:342 89:1298
90:11 91:1226 92:275 93:447 96:28 97:14
98:154 99:3 114:3 116:637 117:324 118:133
119:392 120:29 121:534 122:768 123:345 124:847
125:1132 128:322 129:199 130:129 131:404 132:66
133:9 134:180 135:33 136:220 137:113 138:145
139:65 140:488 141:95 142:391 143:284 144:352
145:50 146:365 147:151 148:494 149:183 150:131
151:182 152:141 153:133 154:10 155:271 156:174
157:267 158:165 159:219 160:254 161:111 162:214
163:199 164:521 165:445 166:305 167:317 168:620
169:131 170:427 171:28 172:22 189:196 190:1889
192:5778 193:4103 194:3257 195:2424 196:1081 198:3735
199:3238 200:5653 201:1429 202:7612 203:7811 204:4002
205:2078 206:2398 207:2745 208:3319 209:3427 210:2526
211:1048 212:1370 213:1652 214:455 215:50 216:4352
217:1222 218:349 219:409 220:1072 221:472 222:307
End of report
