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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 09 May, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 255691
Prefixes after maximum aggregation: 127114
Deaggregation factor: 2.01
Unique aggregates announced to Internet: 124055
Total ASes present in the Internet Routing Table: 28133
Prefixes per ASN: 9.09
Origin-only ASes present in the Internet Routing Table: 24530
Origin ASes announcing only one prefix: 11406
Transit ASes present in the Internet Routing Table: 3603
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: 18
Max AS path prepend of ASN (44859) 15
Prefixes from unregistered ASNs in the Routing Table: 25295
Unregistered ASNs in the Routing Table: 1883
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: 789
Number of addresses announced to Internet: 1849916448
Equivalent to 110 /8s, 67 /16s and 124 /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: 123250
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 43145
Total APNIC prefixes after maximum aggregation: 13455
APNIC Deaggregation factor: 3.21
Prefixes being announced from the APNIC address blocks: 55526
Unique aggregates announced from the APNIC address blocks: 23582
APNIC Region origin ASes present in the Internet Routing Table: 1927
APNIC Prefixes per ASN: 28.81
APNIC Region origin ASes announcing only one prefix: 540
APNIC Region transit ASes present in the Internet Routing Table: 350
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 347202528
Equivalent to 20 /8s, 177 /16s and 227 /24s
Percentage of available APNIC address space announced: 79.6
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: 108133
Total ARIN prefixes after maximum aggregation: 59314
ARIN Deaggregation factor: 1.82
Prefixes being announced from the ARIN address blocks: 86842
Unique aggregates announced from the ARIN address blocks: 34379
ARIN Region origin ASes present in the Internet Routing Table: 11796
ARIN Prefixes per ASN: 7.36
ARIN Region origin ASes announcing only one prefix: 4601
ARIN Region transit ASes present in the Internet Routing Table: 1034
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 358214400
Equivalent to 21 /8s, 89 /16s and 235 /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: 55273
Total RIPE prefixes after maximum aggregation: 33661
RIPE Deaggregation factor: 1.64
Prefixes being announced from the RIPE address blocks: 50477
Unique aggregates announced from the RIPE address blocks: 33754
RIPE Region origin ASes present in the Internet Routing Table: 11313
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: 1721
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 356354176
Equivalent to 21 /8s, 61 /16s and 136 /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: 19967
Total LACNIC prefixes after maximum aggregation: 4957
LACNIC Deaggregation factor: 4.03
Prefixes being announced from the LACNIC address blocks: 18339
Unique aggregates announced from the LACNIC address blocks: 9876
LACNIC Region origin ASes present in the Internet Routing Table: 896
LACNIC Prefixes per ASN: 20.47
LACNIC Region origin ASes announcing only one prefix: 278
LACNIC Region transit ASes present in the Internet Routing Table: 152
Average LACNIC Region AS path length visible: 4.1
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 51025920
Equivalent to 3 /8s, 10 /16s and 152 /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: 3877
Total AfriNIC prefixes after maximum aggregation: 1208
AfriNIC Deaggregation factor: 3.21
Prefixes being announced from the AfriNIC address blocks: 4198
Unique aggregates announced from the AfriNIC address blocks: 1854
AfriNIC Region origin ASes present in the Internet Routing Table: 242
AfriNIC Prefixes per ASN: 17.35
AfriNIC Region origin ASes announcing only one prefix: 77
AfriNIC Region transit ASes present in the Internet Routing Table: 49
Average AfriNIC Region AS path length visible: 3.9
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 12200448
Equivalent to 0 /8s, 186 /16s and 42 /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 1633 387 91 Videsh Sanchar Nigam Ltd. Aut
9583 1180 140 15 Sify Limited
9498 1170 550 61 BHARTI BT INTERNET LTD.
17488 1064 70 76 Hathway IP Over Cable Interne
4134 854 12613 318 CHINANET-BACKBONE
4766 845 6006 342 Korea Telecom (KIX)
18101 679 149 54 Reliance Infocom Ltd Internet
9829 595 450 12 BSNL National Internet Backbo
1221 544 1918 418 Telstra Pty Ltd
4808 520 837 132 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 1422 1014 376 Time Warner Telecom
2386 1402 643 864 AT&T Data Communications Serv
7018 1400 5977 996 AT&T WorldNet Services
11492 1212 146 33 Cable One
7011 1095 319 624 Citizens Utilities
18566 1044 296 10 Covad Communications
1785 1017 511 106 AppliedTheory Corporation
6197 988 598 508 BellSouth Network Solutions,
174 972 6835 801 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 408 1788 368 TDC Tele Danmark
8452 356 188 7 TEDATA
3301 338 1458 306 TeliaNet Sweden
3320 324 7044 267 Deutsche Telekom AG
8866 298 78 24 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 1206 2433 224 UniNet S.A. de C.V.
11830 601 299 9 Instituto Costarricense de El
22047 566 270 14 VTR PUNTO NET S.A.
7303 455 222 60 Telecom Argentina Stet-France
16814 426 27 10 NSS, S.A.
6471 416 85 46 ENTEL CHILE S.A.
11172 415 117 69 Servicios Alestra S.A de C.V
10620 390 99 69 TVCABLE BOGOTA
14117 375 23 9 Telefonica del Sur S.A.
20299 343 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 220 34 3 EgyNet
2018 179 189 83 Tertiary Education Network
5713 171 560 120 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 2894 3021 117 bellsouth.net, inc.
23577 1642 34 701 Korea Telecom (ATM-MPLS)
4755 1633 387 91 Videsh Sanchar Nigam Ltd. Aut
4323 1422 1014 376 Time Warner Telecom
2386 1402 643 864 AT&T Data Communications Serv
7018 1400 5977 996 AT&T WorldNet Services
11492 1212 146 33 Cable One
8151 1206 2433 224 UniNet S.A. de C.V.
9583 1180 140 15 Sify Limited
9498 1170 550 61 BHARTI BT INTERNET LTD.
Complete listing at http://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4755 1633 1542 Videsh Sanchar Nigam Ltd. Aut
11492 1212 1179 Cable One
9583 1180 1165 Sify Limited
9498 1170 1109 BHARTI BT INTERNET LTD.
4323 1422 1046 Time Warner Telecom
18566 1044 1034 Covad Communications
17488 1064 988 Hathway IP Over Cable Interne
8151 1206 982 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 1239 Sprint
15132 UNALLOCATED 12.9.150.0/24 701 UUNET Technologies,
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 /11:42 /12:139
/13:280 /14:508 /15:1001 /16:9901 /17:4360 /18:7279
/19:15391 /20:17805 /21:17228 /22:21695 /23:22804 /24:134946
/25:774 /26:915 /27:480 /28:82 /29:9 /30:1
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1198 1212 Cable One
2386 1102 1402 AT&T Data Communications Serv
18566 1025 1044 Covad Communications
9583 1016 1180 Sify Limited
4755 979 1633 Videsh Sanchar Nigam Ltd. Aut
7011 978 1095 Citizens Utilities
6478 934 935 AT&T Worldnet Services
6389 897 2894 bellsouth.net, inc.
17488 876 1064 Hathway IP Over Cable Interne
9498 846 1170 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 12:2030 13:1 15:20 16:3
17:5 18:13 20:35 24:1073 25:1 32:61
33:3 38:420 40:94 41:662 44:2 47:8
52:3 55:3 56:3 57:22 58:520 59:458
60:441 61:980 62:1128 63:1960 64:3416 65:2432
66:3640 67:1178 68:664 69:2219 70:598 71:122
72:1677 73:6 74:953 75:228 76:306 77:651
78:610 79:151 80:904 81:865 82:627 83:389
84:558 85:998 86:403 87:666 88:346 89:1291
90:11 91:1202 92:297 93:425 96:27 97:14
98:156 99:3 114:1 116:651 117:296 118:129
119:383 120:27 121:526 122:764 123:331 124:845
125:1130 128:323 129:198 130:129 131:404 132:67
133:9 134:180 135:31 136:222 137:112 138:139
139:321 140:483 141:96 142:398 143:286 144:349
145:50 146:363 147:152 148:506 149:183 150:188
151:181 152:141 153:133 154:10 155:268 156:173
157:267 158:167 159:221 160:254 161:111 162:213
163:196 164:520 165:447 166:306 167:319 168:617
169:128 170:425 171:28 172:4 189:196 190:1831
192:5774 193:4105 194:3259 195:2430 196:1088 198:3734
199:3234 200:5669 201:1450 202:7597 203:7799 204:4011
205:2080 206:2394 207:2745 208:3325 209:3421 210:2530
211:1046 212:1388 213:1655 214:452 215:50 216:4344
217:1225 218:349 219:407 220:1074 221:478 222:306
End of report
