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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Fri 16 May, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 255793
Prefixes after maximum aggregation: 127129
Deaggregation factor: 2.01
Unique aggregates announced to Internet: 124091
Total ASes present in the Internet Routing Table: 28181
Prefixes per ASN: 9.08
Origin-only ASes present in the Internet Routing Table: 24581
Origin ASes announcing only one prefix: 11418
Transit ASes present in the Internet Routing Table: 3600
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: 25529
Unregistered ASNs in the Routing Table: 1891
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: 795
Number of addresses announced to Internet: 1851550624
Equivalent to 110 /8s, 92 /16s and 107 /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: 123184
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 43210
Total APNIC prefixes after maximum aggregation: 13463
APNIC Deaggregation factor: 3.21
Prefixes being announced from the APNIC address blocks: 55688
Unique aggregates announced from the APNIC address blocks: 23810
APNIC Region origin ASes present in the Internet Routing Table: 1936
APNIC Prefixes per ASN: 28.76
APNIC Region origin ASes announcing only one prefix: 542
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: 17
Number of APNIC addresses announced to Internet: 348519648
Equivalent to 20 /8s, 197 /16s and 252 /24s
Percentage of available APNIC address space announced: 79.9
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: 107794
Total ARIN prefixes after maximum aggregation: 59233
ARIN Deaggregation factor: 1.82
Prefixes being announced from the ARIN address blocks: 86800
Unique aggregates announced from the ARIN address blocks: 34217
ARIN Region origin ASes present in the Internet Routing Table: 11814
ARIN Prefixes per ASN: 7.35
ARIN Region origin ASes announcing only one prefix: 4614
ARIN Region transit ASes present in the Internet Routing Table: 1042
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 357897856
Equivalent to 21 /8s, 85 /16s and 22 /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: 55294
Total RIPE prefixes after maximum aggregation: 33681
RIPE Deaggregation factor: 1.64
Prefixes being announced from the RIPE address blocks: 50485
Unique aggregates announced from the RIPE address blocks: 33751
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: 1713
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 356540288
Equivalent to 21 /8s, 64 /16s and 95 /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: 20070
Total LACNIC prefixes after maximum aggregation: 4994
LACNIC Deaggregation factor: 4.02
Prefixes being announced from the LACNIC address blocks: 18529
Unique aggregates announced from the LACNIC address blocks: 10033
LACNIC Region origin ASes present in the Internet Routing Table: 900
LACNIC Prefixes per ASN: 20.59
LACNIC Region origin ASes announcing only one prefix: 276
LACNIC Region transit ASes present in the Internet Routing Table: 156
Average LACNIC Region AS path length visible: 4.1
Max LACNIC Region AS path length visible: 25
Number of LACNIC addresses announced to Internet: 51261440
Equivalent to 3 /8s, 14 /16s and 48 /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: 3896
Total AfriNIC prefixes after maximum aggregation: 1184
AfriNIC Deaggregation factor: 3.29
Prefixes being announced from the AfriNIC address blocks: 4218
Unique aggregates announced from the AfriNIC address blocks: 1853
AfriNIC Region origin ASes present in the Internet Routing Table: 241
AfriNIC Prefixes per ASN: 17.50
AfriNIC Region origin ASes announcing only one prefix: 76
AfriNIC Region transit ASes present in the Internet Routing Table: 47
Average AfriNIC Region AS path length visible: 3.9
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 12208384
Equivalent to 0 /8s, 186 /16s and 73 /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 1176 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 677 149 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 1422 1014 378 Time Warner Telecom
2386 1412 643 873 AT&T Data Communications Serv
7018 1398 5976 994 AT&T WorldNet Services
11492 1217 147 12 Cable One
7011 1086 318 617 Citizens Utilities
18566 1044 296 10 Covad Communications
6197 1028 630 542 BellSouth Network Solutions,
1785 1017 510 105 AppliedTheory Corporation
174 974 6836 803 Cogent Communications
22773 951 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 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 1216 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 460 225 66 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 471 61 28 LINKdotNET AS number
3741 286 853 223 The Internet Solution
20858 222 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 3102 3037 123 bellsouth.net, inc.
23577 1642 34 700 Korea Telecom (ATM-MPLS)
4755 1638 387 91 Videsh Sanchar Nigam Ltd. Aut
4323 1422 1014 378 Time Warner Telecom
2386 1412 643 873 AT&T Data Communications Serv
7018 1398 5976 994 AT&T WorldNet Services
11492 1217 147 12 Cable One
8151 1216 2464 229 UniNet S.A. de C.V.
9498 1176 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 1176 1115 BHARTI BT INTERNET LTD.
4323 1422 1044 Time Warner Telecom
18566 1044 1034 Covad Communications
17488 1064 988 Hathway IP Over Cable Interne
8151 1216 987 UniNet S.A. de C.V.
17676 1016 951 Softbank BB Corp.
23577 1642 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 /11:40 /12:140
/13:281 /14:510 /15:1004 /16:9916 /17:4364 /18:7291
/19:15427 /20:17867 /21:17278 /22:21710 /23:22820 /24:134871
/25:756 /26:892 /27:486 /28:78 /29:9 /30:1
/31:0 /32:9
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1200 1217 Cable One
2386 1112 1412 AT&T Data Communications Serv
18566 1025 1044 Covad Communications
9583 988 1150 Sify Limited
4755 984 1638 Videsh Sanchar Nigam Ltd. Aut
7011 969 1086 Citizens Utilities
6389 967 3102 bellsouth.net, inc.
6478 943 944 AT&T Worldnet Services
17488 877 1064 Hathway IP Over Cable Interne
9498 850 1176 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 12:2044 13:1 15:20 16:3
17:5 18:13 20:35 24:1069 25:1 32:61
33:3 38:420 40:93 41:671 44:2 47:12
52:3 55:3 56:3 57:23 58:510 59:461
60:442 61:982 62:1104 63:1957 64:3402 65:2427
66:3645 67:1180 68:658 69:2222 70:605 71:119
72:1668 73:5 74:964 75:225 76:306 77:666
78:613 79:149 80:881 81:866 82:619 83:388
84:560 85:1004 86:411 87:650 88:339 89:1295
90:11 91:1231 92:274 93:447 96:32 97:14
98:154 99:3 114:4 116:649 117:327 118:132
119:395 120:39 121:534 122:762 123:348 124:847
125:1133 128:322 129:199 130:131 131:403 132:66
133:9 134:180 135:33 136:220 137:117 138:146
139:65 140:492 141:95 142:391 143:291 144:351
145:50 146:364 147:152 148:493 149:183 150:131
151:183 152:141 153:134 154:10 155:271 156:175
157:269 158:163 159:221 160:255 161:111 162:215
163:198 164:522 165:445 166:304 167:320 168:621
169:131 170:425 171:28 172:22 189:166 190:1993
192:5774 193:4106 194:3261 195:2430 196:1079 198:3732
199:3244 200:5671 201:1453 202:7588 203:7824 204:4001
205:2070 206:2393 207:2745 208:3333 209:3425 210:2526
211:1033 212:1383 213:1652 214:459 215:50 216:4347
217:1204 218:355 219:412 220:1076 221:470 222:307
End of report
