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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 20 May, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 255791
Prefixes after maximum aggregation: 127125
Deaggregation factor: 2.01
Unique aggregates announced to Internet: 124146
Total ASes present in the Internet Routing Table: 28198
Prefixes per ASN: 9.07
Origin-only ASes present in the Internet Routing Table: 24593
Origin ASes announcing only one prefix: 11409
Transit ASes present in the Internet Routing Table: 3605
Transit-only ASes present in the Internet Routing Table: 83
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 18
Max AS path prepend of ASN (39375) 13
Prefixes from unregistered ASNs in the Routing Table: 25593
Unregistered ASNs in the Routing Table: 1887
Number of 32-bit ASNs allocated by the RIRs: 47
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: 782
Number of addresses announced to Internet: 1852178592
Equivalent to 110 /8s, 102 /16s and 0 /24s
Percentage of available address space announced: 50.0
Percentage of allocated address space announced: 61.4
Percentage of available address space allocated: 81.4
Percentage of address space in use by end-sites: 71.9
Total number of prefixes smaller than registry allocations: 123309
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 43265
Total APNIC prefixes after maximum aggregation: 13503
APNIC Deaggregation factor: 3.20
Prefixes being announced from the APNIC address blocks: 55809
Unique aggregates announced from the APNIC address blocks: 23907
APNIC Region origin ASes present in the Internet Routing Table: 1947
APNIC Prefixes per ASN: 28.66
APNIC Region origin ASes announcing only one prefix: 546
APNIC Region transit ASes present in the Internet Routing Table: 353
Average APNIC Region AS path length visible: 3.5
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 349029856
Equivalent to 20 /8s, 205 /16s and 197 /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: 107868
Total ARIN prefixes after maximum aggregation: 59277
ARIN Deaggregation factor: 1.82
Prefixes being announced from the ARIN address blocks: 86899
Unique aggregates announced from the ARIN address blocks: 34226
ARIN Region origin ASes present in the Internet Routing Table: 11825
ARIN Prefixes per ASN: 7.35
ARIN Region origin ASes announcing only one prefix: 4612
ARIN Region transit ASes present in the Internet Routing Table: 1047
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 357331072
Equivalent to 21 /8s, 76 /16s and 112 /24s
Percentage of available ARIN address space announced: 73.4
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: 55242
Total RIPE prefixes after maximum aggregation: 33717
RIPE Deaggregation factor: 1.64
Prefixes being announced from the RIPE address blocks: 50447
Unique aggregates announced from the RIPE address blocks: 33748
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: 5901
RIPE Region transit ASes present in the Internet Routing Table: 1709
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 357197696
Equivalent to 21 /8s, 74 /16s and 103 /24s
Percentage of available RIPE address space announced: 81.9
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: 19947
Total LACNIC prefixes after maximum aggregation: 5004
LACNIC Deaggregation factor: 3.99
Prefixes being announced from the LACNIC address blocks: 18404
Unique aggregates announced from the LACNIC address blocks: 10044
LACNIC Region origin ASes present in the Internet Routing Table: 897
LACNIC Prefixes per ASN: 20.52
LACNIC Region origin ASes announcing only one prefix: 274
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: 15
Number of LACNIC addresses announced to Internet: 51275008
Equivalent to 3 /8s, 14 /16s and 101 /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: 3877
Total AfriNIC prefixes after maximum aggregation: 1190
AfriNIC Deaggregation factor: 3.26
Prefixes being announced from the AfriNIC address blocks: 4193
Unique aggregates announced from the AfriNIC address blocks: 1853
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: 76
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: 12241408
Equivalent to 0 /8s, 186 /16s and 202 /24s
Percentage of available AfriNIC address space announced: 36.5
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
9498 1175 550 61 BHARTI BT INTERNET LTD.
9583 1150 140 15 Sify Limited
17488 1064 70 76 Hathway IP Over Cable Interne
4134 848 12661 319 CHINANET-BACKBONE
4766 848 6006 343 Korea Telecom (KIX)
18101 680 149 51 Reliance Infocom Ltd Internet
9829 598 450 12 BSNL National Internet Backbo
1221 545 1918 419 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 1427 1030 378 Time Warner Telecom
2386 1412 643 873 AT&T Data Communications Serv
7018 1394 5974 996 AT&T WorldNet Services
11492 1218 148 13 Cable One
7011 1086 318 617 Citizens Utilities
18566 1044 296 10 Covad Communications
6197 1028 630 542 BellSouth Network Solutions,
1785 1020 510 105 AppliedTheory Corporation
174 975 6836 803 Cogent Communications
22773 949 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 317 7044 266 Deutsche Telekom AG
8866 297 77 21 Bulgarian Telecommunication C
5462 291 666 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 1218 2464 228 UniNet S.A. de C.V.
11830 601 299 9 Instituto Costarricense de El
22047 566 270 14 VTR PUNTO NET S.A.
7303 460 225 66 Telecom Argentina Stet-France
16814 426 27 10 NSS, S.A.
6471 419 85 46 ENTEL CHILE S.A.
11172 409 117 67 Servicios Alestra S.A de C.V
10620 390 99 69 TVCABLE BOGOTA
14117 375 23 9 Telefonica del Sur S.A.
20299 330 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 473 61 28 LINKdotNET AS number
3741 286 853 223 The Internet Solution
20858 223 34 3 EgyNet
2018 182 173 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 100 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 3714 3045 168 bellsouth.net, inc.
23577 1644 34 702 Korea Telecom (ATM-MPLS)
4755 1639 387 91 Videsh Sanchar Nigam Ltd. Aut
4323 1427 1030 378 Time Warner Telecom
2386 1412 643 873 AT&T Data Communications Serv
7018 1394 5974 996 AT&T WorldNet Services
8151 1218 2464 228 UniNet S.A. de C.V.
11492 1218 148 13 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 1639 1548 Videsh Sanchar Nigam Ltd. Aut
11492 1218 1205 Cable One
9583 1150 1135 Sify Limited
9498 1175 1114 BHARTI BT INTERNET LTD.
4323 1427 1049 Time Warner Telecom
18566 1044 1034 Covad Communications
8151 1218 990 UniNet S.A. de C.V.
17488 1064 988 Hathway IP Over Cable Interne
17676 1016 951 Softbank BB Corp.
23577 1644 942 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 /11:42 /12:140
/13:281 /14:511 /15:1006 /16:9930 /17:4363 /18:7285
/19:15417 /20:17859 /21:17309 /22:21734 /23:22821 /24:134744
/25:784 /26:927 /27:494 /28:82 /29:9 /30:1
/31:0 /32:9
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1201 1218 Cable One
6389 1144 3714 bellsouth.net, inc.
2386 1112 1412 AT&T Data Communications Serv
18566 1025 1044 Covad Communications
9583 988 1150 Sify Limited
4755 985 1639 Videsh Sanchar Nigam Ltd. Aut
7011 969 1086 Citizens Utilities
6478 934 935 AT&T Worldnet Services
17488 877 1064 Hathway IP Over Cable Interne
9498 849 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 12:2046 13:1 15:20 16:3
17:5 18:13 20:35 24:1068 25:1 32:61
33:3 38:422 40:93 41:658 44:2 47:12
52:3 55:3 56:3 57:23 58:509 59:463
60:442 61:981 62:1109 63:1955 64:3397 65:2426
66:3657 67:1189 68:660 69:2232 70:607 71:114
72:1672 73:5 74:965 75:216 76:302 77:664
78:617 79:161 80:897 81:864 82:618 83:391
84:560 85:1012 86:411 87:655 88:338 89:1302
90:11 91:1232 92:259 93:384 96:31 97:15
98:155 99:3 114:4 116:640 117:323 118:134
119:417 120:39 121:532 122:765 123:353 124:850
125:1131 128:322 129:200 130:132 131:404 132:66
133:9 134:180 135:33 136:220 137:88 138:146
139:64 140:492 141:95 142:401 143:274 144:351
145:50 146:364 147:152 148:491 149:184 150:131
151:183 152:141 153:134 154:10 155:273 156:174
157:270 158:163 159:221 160:255 161:112 162:212
163:197 164:522 165:446 166:304 167:320 168:621
169:131 170:425 171:28 172:22 189:166 190:2000
192:5770 193:4102 194:3259 195:2433 196:1070 198:3741
199:3239 200:5537 201:1460 202:7591 203:7835 204:3999
205:2078 206:2395 207:2746 208:3347 209:3419 210:2530
211:1059 212:1385 213:1617 214:455 215:50 216:4349
217:1203 218:363 219:415 220:1077 221:470 222:310
End of report
