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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 02 May, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 254841
Prefixes after maximum aggregation: 126990
Deaggregation factor: 2.01
Unique aggregates announced to Internet: 123492
Total ASes present in the Internet Routing Table: 28082
Prefixes per ASN: 9.07
Origin-only ASes present in the Internet Routing Table: 24478
Origin ASes announcing only one prefix: 11402
Transit ASes present in the Internet Routing Table: 3604
Transit-only ASes present in the Internet Routing Table: 81
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 19
Max AS path prepend of ASN (44859) 15
Prefixes from unregistered ASNs in the Routing Table: 25286
Unregistered ASNs in the Routing Table: 1892
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: 1864878112
Equivalent to 111 /8s, 39 /16s and 200 /24s
Percentage of available address space announced: 50.3
Percentage of allocated address space announced: 61.8
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: 122526
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 43065
Total APNIC prefixes after maximum aggregation: 13452
APNIC Deaggregation factor: 3.20
Prefixes being announced from the APNIC address blocks: 55443
Unique aggregates announced from the APNIC address blocks: 23539
APNIC Region origin ASes present in the Internet Routing Table: 1932
APNIC Prefixes per ASN: 28.70
APNIC Region origin ASes announcing only one prefix: 553
APNIC Region transit ASes present in the Internet Routing Table: 351
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 14
Number of APNIC addresses announced to Internet: 346764640
Equivalent to 20 /8s, 171 /16s and 53 /24s
Percentage of available APNIC address space announced: 79.5
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: 107808
Total ARIN prefixes after maximum aggregation: 59213
ARIN Deaggregation factor: 1.82
Prefixes being announced from the ARIN address blocks: 86640
Unique aggregates announced from the ARIN address blocks: 34313
ARIN Region origin ASes present in the Internet Routing Table: 11779
ARIN Prefixes per ASN: 7.36
ARIN Region origin ASes announcing only one prefix: 4608
ARIN Region transit ASes present in the Internet Routing Table: 1041
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 357998592
Equivalent to 21 /8s, 86 /16s and 160 /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: 54995
Total RIPE prefixes after maximum aggregation: 33602
RIPE Deaggregation factor: 1.64
Prefixes being announced from the RIPE address blocks: 50206
Unique aggregates announced from the RIPE address blocks: 33585
RIPE Region origin ASes present in the Internet Routing Table: 11272
RIPE Prefixes per ASN: 4.45
RIPE Region origin ASes announcing only one prefix: 5886
RIPE Region transit ASes present in the Internet Routing Table: 1716
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 355504640
Equivalent to 21 /8s, 48 /16s and 146 /24s
Percentage of available RIPE address space announced: 81.5
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: 19874
Total LACNIC prefixes after maximum aggregation: 4967
LACNIC Deaggregation factor: 4.00
Prefixes being announced from the LACNIC address blocks: 18305
Unique aggregates announced from the LACNIC address blocks: 9840
LACNIC Region origin ASes present in the Internet Routing Table: 894
LACNIC Prefixes per ASN: 20.48
LACNIC Region origin ASes announcing only one prefix: 280
LACNIC Region transit ASes present in the Internet Routing Table: 155
Average LACNIC Region AS path length visible: 4.1
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 50846720
Equivalent to 3 /8s, 7 /16s and 220 /24s
Percentage of available LACNIC address space announced: 50.5
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: 3812
Total AfriNIC prefixes after maximum aggregation: 1214
AfriNIC Deaggregation factor: 3.14
Prefixes being announced from the AfriNIC address blocks: 4144
Unique aggregates announced from the AfriNIC address blocks: 1840
AfriNIC Region origin ASes present in the Internet Routing Table: 240
AfriNIC Prefixes per ASN: 17.27
AfriNIC Region origin ASes announcing only one prefix: 75
AfriNIC Region transit ASes present in the Internet Routing Table: 49
Average AfriNIC Region AS path length visible: 4.0
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 11771136
Equivalent to 0 /8s, 179 /16s and 157 /24s
Percentage of available AfriNIC address space announced: 35.1
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 1639 387 91 Videsh Sanchar Nigam Ltd. Aut
9583 1175 140 16 Sify Limited
9498 1164 550 61 BHARTI BT INTERNET LTD.
17488 1060 70 75 Hathway IP Over Cable Interne
4134 855 12615 319 CHINANET-BACKBONE
4766 846 6006 345 Korea Telecom (KIX)
18101 680 149 54 Reliance Infocom Ltd Internet
9829 598 450 12 BSNL National Internet Backbo
1221 545 1919 419 Telstra Pty Ltd
4808 516 833 130 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 1425 1014 376 Time Warner Telecom
7018 1403 5977 1000 AT&T WorldNet Services
2386 1395 642 863 AT&T Data Communications Serv
11492 1211 146 36 Cable One
7011 1095 318 624 Citizens Utilities
18566 1043 296 10 Covad Communications
1785 1014 511 106 AppliedTheory Corporation
6197 987 598 508 BellSouth Network Solutions,
174 971 6835 802 Cogent Communications
6478 935 222 97 AT&T Worldnet Services
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
3292 407 1788 367 TDC Tele Danmark
9198 401 74 9 Kazakhtelecom Data Network Ad
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 277 2678 89 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 1202 2433 223 UniNet S.A. de C.V.
11830 601 299 9 Instituto Costarricense de El
22047 564 270 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 388 99 76 TVCABLE BOGOTA
14117 384 25 15 Telefonica del Sur S.A.
20299 341 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 218 34 3 EgyNet
2018 179 190 86 Tertiary Education Network
5713 150 558 120 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 2768 3020 115 bellsouth.net, inc.
23577 1640 34 700 Korea Telecom (ATM-MPLS)
4755 1639 387 91 Videsh Sanchar Nigam Ltd. Aut
4323 1425 1014 376 Time Warner Telecom
7018 1403 5977 1000 AT&T WorldNet Services
2386 1395 642 863 AT&T Data Communications Serv
11492 1211 146 36 Cable One
8151 1202 2433 223 UniNet S.A. de C.V.
9583 1175 140 16 Sify Limited
9498 1164 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 1639 1548 Videsh Sanchar Nigam Ltd. Aut
11492 1211 1175 Cable One
9583 1175 1159 Sify Limited
9498 1164 1103 BHARTI BT INTERNET LTD.
4323 1425 1049 Time Warner Telecom
18566 1043 1033 Covad Communications
17488 1060 985 Hathway IP Over Cable Interne
8151 1202 979 UniNet S.A. de C.V.
17676 1016 951 Softbank BB Corp.
23577 1640 940 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 /8:19 /9:9 /10:16 /11:42 /12:139
/13:280 /14:506 /15:1000 /16:9881 /17:4360 /18:7287
/19:15383 /20:17787 /21:17191 /22:21612 /23:22716 /24:134278
/25:784 /26:933 /27:494 /28:106 /29:9 /30:1
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1197 1211 Cable One
2386 1095 1395 AT&T Data Communications Serv
18566 1024 1043 Covad Communications
9583 1010 1175 Sify Limited
7011 978 1095 Citizens Utilities
4755 974 1639 Videsh Sanchar Nigam Ltd. Aut
6478 934 935 AT&T Worldnet Services
17488 872 1060 Hathway IP Over Cable Interne
6389 861 2768 bellsouth.net, inc.
9498 839 1164 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 8:106 12:2028 13:1 15:20 16:3
17:6 18:13 20:35 24:1069 25:1 32:61
33:4 38:419 40:95 41:660 44:2 47:8
52:3 55:3 56:3 57:22 58:515 59:459
60:441 61:983 62:1115 63:1962 64:3410 65:2432
66:3632 67:1170 68:673 69:2180 70:599 71:126
72:1677 73:6 74:949 75:228 76:300 77:648
78:607 79:149 80:900 81:856 82:624 83:372
84:550 85:996 86:403 87:655 88:345 89:1287
90:11 91:1215 92:293 93:360 96:25 97:14
98:145 99:3 116:633 117:297 118:124 119:372
120:14 121:524 122:755 123:320 124:848 125:1116
128:320 129:198 130:128 131:404 132:67 133:9
134:179 135:32 136:221 137:112 138:150 139:62
140:483 141:96 142:395 143:289 144:349 145:50
146:358 147:150 148:507 149:183 150:131 151:178
152:138 153:133 154:10 155:268 156:207 157:267
158:168 159:221 160:253 161:111 162:208 163:194
164:583 165:448 166:304 167:319 168:613 169:128
170:422 171:28 172:2 189:164 190:1834 192:5770
193:4102 194:3260 195:2428 196:1051 198:3739 199:3231
200:5674 201:1443 202:7546 203:7833 204:4006 205:2091
206:2390 207:2747 208:3297 209:3449 210:2538 211:1046
212:1370 213:1645 214:447 215:50 216:4337 217:1216
218:348 219:406 220:1067 221:483 222:305
End of report
