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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 27 May, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 256305
Prefixes after maximum aggregation: 127279
Deaggregation factor: 2.01
Unique aggregates announced to Internet: 124402
Total ASes present in the Internet Routing Table: 28291
Prefixes per ASN: 9.06
Origin-only ASes present in the Internet Routing Table: 24675
Origin ASes announcing only one prefix: 3679
Transit ASes present in the Internet Routing Table: 3616
Transit-only ASes present in the Internet Routing Table: 76
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: 66949
Unregistered ASNs in the Routing Table: 15993
Number of 32-bit ASNs allocated by the RIRs: 0
Prefixes from 32-bit ASNs in the Routing Table: 8
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 0
Number of addresses announced to Internet: 1870841536
Equivalent to 111 /8s, 130 /16s and 198 /24s
Percentage of available address space announced: 50.5
Percentage of allocated address space announced: inf
Percentage of available address space allocated: 0.0
Percentage of address space in use by end-sites: 0.0
Total number of prefixes smaller than registry allocations: 124363
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 48349
Total APNIC prefixes after maximum aggregation: 16735
APNIC Deaggregation factor: 2.89
Prefixes being announced from the APNIC address blocks: 0
Unique aggregates announced from the APNIC address blocks: 0
APNIC Region origin ASes present in the Internet Routing Table: 1833
APNIC Prefixes per ASN: 0.00
APNIC Region origin ASes announcing only one prefix: 361
APNIC Region transit ASes present in the Internet Routing Table: 383
Average APNIC Region AS path length visible: 3.3
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 0
Equivalent to 0 /8s, 0 /16s and 0 /24s
Percentage of available APNIC address space announced: nan
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079
APNIC Address Blocks
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 92915
Total ARIN prefixes after maximum aggregation: 48639
ARIN Deaggregation factor: 1.91
Prefixes being announced from the ARIN address blocks: 0
Unique aggregates announced from the ARIN address blocks: 0
ARIN Region origin ASes present in the Internet Routing Table: 6637
ARIN Prefixes per ASN: 0.00
ARIN Region origin ASes announcing only one prefix: 2056
ARIN Region transit ASes present in the Internet Routing Table: 807
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 0
Equivalent to 0 /8s, 0 /16s and 0 /24s
Percentage of available ARIN address space announced: nan
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
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 31062
Total RIPE prefixes after maximum aggregation: 18312
RIPE Deaggregation factor: 1.70
Prefixes being announced from the RIPE address blocks: 0
Unique aggregates announced from the RIPE address blocks: 0
RIPE Region origin ASes present in the Internet Routing Table: 3288
RIPE Prefixes per ASN: 0.00
RIPE Region origin ASes announcing only one prefix: 1166
RIPE Region transit ASes present in the Internet Routing Table: 915
Average RIPE Region AS path length visible: 3.7
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 0
Equivalent to 0 /8s, 0 /16s and 0 /24s
Percentage of available RIPE address space announced: nan
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
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 15048
Total LACNIC prefixes after maximum aggregation: 3333
LACNIC Deaggregation factor: 4.51
Prefixes being announced from the LACNIC address blocks: 0
Unique aggregates announced from the LACNIC address blocks: 0
LACNIC Region origin ASes present in the Internet Routing Table: 404
LACNIC Prefixes per ASN: 0.00
LACNIC Region origin ASes announcing only one prefix: 83
LACNIC Region transit ASes present in the Internet Routing Table: 111
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 14
Number of LACNIC addresses announced to Internet: 0
Equivalent to 0 /8s, 0 /16s and 0 /24s
Percentage of available LACNIC address space announced: nan
LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 1981
Total AfriNIC prefixes after maximum aggregation: 726
AfriNIC Deaggregation factor: 2.73
Prefixes being announced from the AfriNIC address blocks: 0
Unique aggregates announced from the AfriNIC address blocks: 0
AfriNIC Region origin ASes present in the Internet Routing Table: 63
AfriNIC Prefixes per ASN: 0.00
AfriNIC Region origin ASes announcing only one prefix: 13
AfriNIC Region transit ASes present in the Internet Routing Table: 24
Average AfriNIC Region AS path length visible: 3.7
Max AfriNIC Region AS path length visible: 12
Number of AfriNIC addresses announced to Internet: 0
Equivalent to 0 /8s, 0 /16s and 0 /24s
Percentage of available AfriNIC address space announced: nan
AfriNIC AS Blocks 36864-37887 & ERX transfers
AfriNIC Address Blocks
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4755 1640 387 91 Videsh Sanchar Nigam Ltd. Aut
9498 1163 550 60 BHARTI BT INTERNET LTD.
9583 1150 140 15 Sify Limited
17488 1067 70 76 Hathway IP Over Cable Interne
4134 853 12659 318 CHINANET-BACKBONE
4766 849 6006 343 Korea Telecom (KIX)
18101 681 149 51 Reliance Infocom Ltd Internet
9829 595 450 12 BSNL National Internet Backbo
1221 545 1918 419 Telstra Pty Ltd
4808 517 845 131 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
6389 1994 3087 178 bellsouth.net, inc.
4323 1465 1045 379 Time Warner Telecom
2386 1434 659 871 AT&T Data Communications Serv
7018 1379 5958 983 AT&T WorldNet Services
11492 1224 148 12 Cable One
7011 1088 302 616 Citizens Utilities
18566 1044 296 10 Covad Communications
1785 1021 510 105 AppliedTheory Corporation
6197 986 597 507 BellSouth Network Solutions,
174 970 6837 806 Cogent Communications
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 368 TDC Tele Danmark
8452 356 188 7 TEDATA
3301 335 1457 303 TeliaNet Sweden
3320 317 7044 266 Deutsche Telekom AG
8866 297 77 21 Bulgarian Telecommunication C
5462 290 666 26 Telewest Broadband
3215 284 2702 93 France Telecom Transpac
8551 283 269 38 Bezeq International
680 275 2047 265 DFN-IP service G-WiN
6746 264 125 240 Dynamic Network Technologies,
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 1228 2464 228 UniNet S.A. de C.V.
11830 601 299 9 Instituto Costarricense de El
22047 565 270 14 VTR PUNTO NET S.A.
7303 462 226 67 Telecom Argentina Stet-France
16814 426 27 10 NSS, S.A.
6471 414 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 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
3741 286 853 223 The Internet Solution
20858 224 34 3 EgyNet
2018 182 173 82 Tertiary Education Network
5713 174 575 108 Telkom SA Ltd
6713 145 136 12 Itissalat Al-MAGHRIB
5536 121 8 16 Internet Egypt Network
2905 85 177 75 The Internetworking Company o
15475 68 84 4 Nile Online
20484 63 8 3 Yalla Online Autonomous Syste
15706 60 12 4 Sudatel Internet Exchange Aut
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 1994 3087 178 bellsouth.net, inc.
22773 1890 2394 62 Cox Communications, Inc.
23577 1646 34 703 Korea Telecom (ATM-MPLS)
4755 1640 387 91 Videsh Sanchar Nigam Ltd. Aut
4323 1465 1045 379 Time Warner Telecom
2386 1434 659 871 AT&T Data Communications Serv
7018 1379 5958 983 AT&T WorldNet Services
8151 1228 2464 228 UniNet S.A. de C.V.
11492 1224 148 12 Cable One
9498 1163 550 60 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
22773 1890 1828 Cox Communications, Inc.
4755 1640 1549 Videsh Sanchar Nigam Ltd. Aut
11492 1224 1212 Cable One
9583 1150 1135 Sify Limited
9498 1163 1103 BHARTI BT INTERNET LTD.
4323 1465 1086 Time Warner Telecom
18566 1044 1034 Covad Communications
8151 1228 1000 UniNet S.A. de C.V.
17488 1067 991 Hathway IP Over Cable Interne
23577 1646 943 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
40220 UNALLOCATED 4.79.201.0/26 10886 University of Maryla
32473 UNALLOCATED 8.2.1.0/24 6517 Yipes Communications
22645 UNALLOCATED 8.2.5.0/24 7911 Williams Communicati
36394 UNALLOCATED 8.2.144.0/24 26554 US Signal
26769 UNALLOCATED 8.3.13.0/24 3356 Level 3 Communicatio
26769 UNALLOCATED 8.3.19.0/24 3356 Level 3 Communicatio
26769 UNALLOCATED 8.3.26.0/23 3356 Level 3 Communicatio
26759 UNALLOCATED 8.3.52.0/23 1239 Sprint
36524 UNALLOCATED 8.3.160.0/24 3356 Level 3 Communicatio
36431 UNALLOCATED 8.3.208.0/24 3549 Global Crossing
Complete listing at http://thyme.apnic.net/current/data-badAS
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 /12:141
/13:282 /14:513 /15:1008 /16:9915 /17:4362 /18:7285
/19:15467 /20:17912 /21:17403 /22:21789 /23:22813 /24:135023
/25:787 /26:926 /27:493 /28:81 /29:9 /30:1
/31:0 /32:9
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 1461 1994 bellsouth.net, inc.
11492 1224 1224 Cable One
2386 1103 1434 AT&T Data Communications Serv
18566 1044 1044 Covad Communications
7011 1005 1088 Citizens Utilities
6478 951 952 AT&T Worldnet Services
9498 939 1163 BHARTI BT INTERNET LTD.
4755 917 1640 Videsh Sanchar Nigam Ltd. Aut
20115 895 931 Charter Communications
22773 893 1890 Cox Communications, Inc.
Complete listing at http://thyme.apnic.net/current/data/sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:9 8:107 12:2052 13:1 15:20 16:3
17:5 18:13 20:35 24:1075 25:1 32:61
33:3 38:424 40:93 41:650 43:1 44:2
47:12 52:3 55:3 56:3 57:23 58:512
59:465 60:443 61:996 62:1108 63:1953 64:3395
65:2416 66:3649 67:1198 68:681 69:2243 70:631
71:125 72:1758 73:5 74:974 75:216 76:308
77:661 78:616 79:169 80:897 81:856 82:579
83:393 84:568 85:1020 86:416 87:676 88:324
89:1197 90:11 91:1245 92:182 93:494 96:31
97:18 98:173 99:3 114:6 116:644 117:323
118:132 119:424 120:40 121:532 122:769 123:345
124:848 125:1134 128:325 129:200 130:131 131:403
132:66 133:9 134:177 135:33 136:182 137:90
138:151 139:68 140:483 141:99 142:400 143:300
144:356 145:50 146:362 147:153 148:503 149:182
150:131 151:192 152:141 153:135 154:10 155:273
156:174 157:271 158:163 159:222 160:257 161:112
162:227 163:186 164:524 165:448 166:309 167:323
168:608 169:131 170:427 171:28 172:10 189:170
190:2013 192:5791 193:4098 194:3205 195:2444 196:1064
198:3740 199:3259 200:5600 201:1422 202:7617 203:7875
204:3996 205:2075 206:2402 207:2765 208:3337 209:3425
210:2518 211:1052 212:1390 213:1650 214:458 215:49
216:4357 217:1200 218:354 219:416 220:1079 221:467
222:309
End of report
