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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Mon 19 May, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 256032
Prefixes after maximum aggregation: 127097
Deaggregation factor: 2.01
Unique aggregates announced to Internet: 124276
Total ASes present in the Internet Routing Table: 28214
Prefixes per ASN: 9.07
Origin-only ASes present in the Internet Routing Table: 24607
Origin ASes announcing only one prefix: 11438
Transit ASes present in the Internet Routing Table: 3607
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: 24
Max AS path prepend of ASN (39375) 13
Prefixes from unregistered ASNs in the Routing Table: 25569
Unregistered ASNs in the Routing Table: 1889
Number of 32-bit ASNs allocated by the RIRs: 47
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: 783
Number of addresses announced to Internet: 1852756448
Equivalent to 110 /8s, 110 /16s and 209 /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: 123426
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 43224
Total APNIC prefixes after maximum aggregation: 13490
APNIC Deaggregation factor: 3.20
Prefixes being announced from the APNIC address blocks: 55761
Unique aggregates announced from the APNIC address blocks: 23892
APNIC Region origin ASes present in the Internet Routing Table: 1945
APNIC Prefixes per ASN: 28.67
APNIC Region origin ASes announcing only one prefix: 547
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: 349020128
Equivalent to 20 /8s, 205 /16s and 159 /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: 107895
Total ARIN prefixes after maximum aggregation: 59266
ARIN Deaggregation factor: 1.82
Prefixes being announced from the ARIN address blocks: 86853
Unique aggregates announced from the ARIN address blocks: 34202
ARIN Region origin ASes present in the Internet Routing Table: 11828
ARIN Prefixes per ASN: 7.34
ARIN Region origin ASes announcing only one prefix: 4622
ARIN Region transit ASes present in the Internet Routing Table: 1047
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 358043264
Equivalent to 21 /8s, 87 /16s and 78 /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: 55364
Total RIPE prefixes after maximum aggregation: 33727
RIPE Deaggregation factor: 1.64
Prefixes being announced from the RIPE address blocks: 50560
Unique aggregates announced from the RIPE address blocks: 33852
RIPE Region origin ASes present in the Internet Routing Table: 11335
RIPE Prefixes per ASN: 4.46
RIPE Region origin ASes announcing only one prefix: 5916
RIPE Region transit ASes present in the Internet Routing Table: 1712
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 24
Number of RIPE addresses announced to Internet: 357175680
Equivalent to 21 /8s, 74 /16s and 17 /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: 20118
Total LACNIC prefixes after maximum aggregation: 5001
LACNIC Deaggregation factor: 4.02
Prefixes being announced from the LACNIC address blocks: 18570
Unique aggregates announced from the LACNIC address blocks: 10062
LACNIC Region origin ASes present in the Internet Routing Table: 899
LACNIC Prefixes per ASN: 20.66
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: 16
Number of LACNIC addresses announced to Internet: 51271424
Equivalent to 3 /8s, 14 /16s and 87 /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: 3862
Total AfriNIC prefixes after maximum aggregation: 1190
AfriNIC Deaggregation factor: 3.25
Prefixes being announced from the AfriNIC address blocks: 4185
Unique aggregates announced from the AfriNIC address blocks: 1847
AfriNIC Region origin ASes present in the Internet Routing Table: 241
AfriNIC Prefixes per ASN: 17.37
AfriNIC Region origin ASes announcing only one prefix: 77
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: 12204288
Equivalent to 0 /8s, 186 /16s and 57 /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 1639 387 91 Videsh Sanchar Nigam Ltd. Aut
9498 1172 550 61 BHARTI BT INTERNET LTD.
9583 1148 140 14 Sify Limited
17488 1064 70 76 Hathway IP Over Cable Interne
4134 855 12661 319 CHINANET-BACKBONE
4766 848 6006 343 Korea Telecom (KIX)
18101 679 149 51 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 1428 1030 379 Time Warner Telecom
2386 1412 643 873 AT&T Data Communications Serv
7018 1396 5974 997 AT&T WorldNet Services
11492 1218 148 13 Cable One
7011 1085 318 616 Citizens Utilities
18566 1044 296 10 Covad Communications
6197 1028 630 542 BellSouth Network Solutions,
1785 1016 510 104 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 317 7044 266 Deutsche Telekom AG
8866 297 77 21 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 1214 2462 226 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 408 117 66 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 222 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 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 3714 3045 168 bellsouth.net, inc.
23577 1644 34 702 Korea Telecom (ATM-MPLS)
4755 1639 387 91 Videsh Sanchar Nigam Ltd. Aut
4323 1428 1030 379 Time Warner Telecom
2386 1412 643 873 AT&T Data Communications Serv
7018 1396 5974 997 AT&T WorldNet Services
11492 1218 148 13 Cable One
8151 1214 2462 226 UniNet S.A. de C.V.
9498 1172 550 61 BHARTI BT INTERNET LTD.
9583 1148 140 14 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 1148 1134 Sify Limited
9498 1172 1111 BHARTI BT INTERNET LTD.
4323 1428 1049 Time Warner Telecom
18566 1044 1034 Covad Communications
8151 1214 988 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 /14:512 /15:1007 /16:9927 /17:4368 /18:7291
/19:15424 /20:17880 /21:17298 /22:21738 /23:22823 /24:134960
/25:783 /26:926 /27:489 /28:81 /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 986 1148 Sify Limited
4755 985 1639 Videsh Sanchar Nigam Ltd. Aut
7011 968 1085 Citizens Utilities
6478 944 945 AT&T Worldnet Services
17488 877 1064 Hathway IP Over Cable Interne
9498 846 1172 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 12:2045 13:1 15:20 16:3
17:5 18:13 20:35 24:1068 25:1 32:61
33:3 38:421 40:93 41:668 44:2 47:12
52:3 55:3 56:3 57:23 58:511 59:463
60:442 61:981 62:1107 63:1954 64:3396 65:2423
66:3657 67:1187 68:659 69:2229 70:604 71:114
72:1672 73:5 74:955 75:216 76:302 77:664
78:615 79:151 80:899 81:864 82:619 83:391
84:560 85:1012 86:411 87:654 88:339 89:1301
90:11 91:1234 92:276 93:446 96:32 97:15
98:154 99:3 114:4 116:640 117:323 118:133
119:398 120:39 121:537 122:762 123:352 124:850
125:1130 128:322 129:200 130:132 131:405 132:66
133:9 134:179 135:33 136:222 137:120 138:146
139:65 140:492 141:95 142:402 143:281 144:351
145:50 146:364 147:152 148:491 149:183 150:131
151:183 152:141 153:134 154:10 155:273 156:174
157:270 158:162 159:221 160:255 161:112 162:215
163:199 164:522 165:447 166:304 167:320 168:621
169:131 170:425 171:28 172:22 189:166 190:2016
192:5770 193:4105 194:3259 195:2433 196:1046 198:3734
199:3241 200:5672 201:1460 202:7579 203:7830 204:3997
205:2086 206:2392 207:2749 208:3343 209:3408 210:2529
211:1059 212:1388 213:1654 214:454 215:50 216:4343
217:1205 218:363 219:415 220:1078 221:470 222:310
End of report
