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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Tue 25 Mar, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 249815
Prefixes after maximum aggregation: 125701
Deaggregation factor: 1.99
Unique aggregates announced to Internet: 121347
Total ASes present in the Internet Routing Table: 27709
Prefixes per ASN: 9.02
Origin-only ASes present in the Internet Routing Table: 24159
Origin ASes announcing only one prefix: 11206
Transit ASes present in the Internet Routing Table: 3550
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 (43380) 13
Prefixes from unregistered ASNs in the Routing Table: 25246
Unregistered ASNs in the Routing Table: 1919
Number of 32-bit ASNs allocated by the RIRs: 46
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: 876
Number of addresses announced to Internet: 1847937792
Equivalent to 110 /8s, 37 /16s and 75 /24s
Percentage of available address space announced: 49.9
Percentage of allocated address space announced: 61.2
Percentage of available address space allocated: 81.4
Percentage of address space in use by end-sites: 71.0
Total number of prefixes smaller than registry allocations: 118880
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 42146
Total APNIC prefixes after maximum aggregation: 13287
APNIC Deaggregation factor: 3.17
Prefixes being announced from the APNIC address blocks: 54238
Unique aggregates announced from the APNIC address blocks: 23135
APNIC Region origin ASes present in the Internet Routing Table: 1905
APNIC Prefixes per ASN: 28.47
APNIC Region origin ASes announcing only one prefix: 551
APNIC Region transit ASes present in the Internet Routing Table: 349
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 336363360
Equivalent to 20 /8s, 12 /16s and 127 /24s
Percentage of available APNIC address space announced: 77.1
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: 106509
Total ARIN prefixes after maximum aggregation: 58600
ARIN Deaggregation factor: 1.82
Prefixes being announced from the ARIN address blocks: 85355
Unique aggregates announced from the ARIN address blocks: 33844
ARIN Region origin ASes present in the Internet Routing Table: 11643
ARIN Prefixes per ASN: 7.33
ARIN Region origin ASes announcing only one prefix: 4518
ARIN Region transit ASes present in the Internet Routing Table: 1036
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 15
Number of ARIN addresses announced to Internet: 360413952
Equivalent to 21 /8s, 123 /16s and 123 /24s
Percentage of available ARIN address space announced: 74.1
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
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: 53188
Total RIPE prefixes after maximum aggregation: 33022
RIPE Deaggregation factor: 1.61
Prefixes being announced from the RIPE address blocks: 48742
Unique aggregates announced from the RIPE address blocks: 32635
RIPE Region origin ASes present in the Internet Routing Table: 11067
RIPE Prefixes per ASN: 4.40
RIPE Region origin ASes announcing only one prefix: 5777
RIPE Region transit ASes present in the Internet Routing Table: 1682
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 348046112
Equivalent to 20 /8s, 190 /16s and 195 /24s
Percentage of available RIPE address space announced: 79.8
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
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: 19139
Total LACNIC prefixes after maximum aggregation: 4763
LACNIC Deaggregation factor: 4.02
Prefixes being announced from the LACNIC address blocks: 17502
Unique aggregates announced from the LACNIC address blocks: 9568
LACNIC Region origin ASes present in the Internet Routing Table: 879
LACNIC Prefixes per ASN: 19.91
LACNIC Region origin ASes announcing only one prefix: 279
LACNIC Region transit ASes present in the Internet Routing Table: 153
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 18
Number of LACNIC addresses announced to Internet: 49794944
Equivalent to 2 /8s, 247 /16s and 207 /24s
Percentage of available LACNIC address space announced: 49.5
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: 3586
Total AfriNIC prefixes after maximum aggregation: 1142
AfriNIC Deaggregation factor: 3.14
Prefixes being announced from the AfriNIC address blocks: 3988
Unique aggregates announced from the AfriNIC address blocks: 1810
AfriNIC Region origin ASes present in the Internet Routing Table: 234
AfriNIC Prefixes per ASN: 17.04
AfriNIC Region origin ASes announcing only one prefix: 81
AfriNIC Region transit ASes present in the Internet Routing Table: 43
Average AfriNIC Region AS path length visible: 3.9
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 10122240
Equivalent to 0 /8s, 154 /16s and 116 /24s
Percentage of available AfriNIC address space announced: 30.2
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 1613 386 85 Videsh Sanchar Nigam Ltd. Aut
9583 1151 140 16 Sify Limited
9498 1121 550 63 BHARTI BT INTERNET LTD.
17488 1034 66 80 Hathway IP Over Cable Interne
4134 855 12473 317 CHINANET-BACKBONE
4766 849 6005 340 Korea Telecom (KIX)
18101 672 126 51 Reliance Infocom Ltd Internet
9829 594 449 11 BSNL National Internet Backbo
4812 561 967 91 China Telecom (Shanghai)
1221 545 1951 420 Telstra Pty Ltd
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
7018 1417 5926 999 AT&T WorldNet Services
2386 1392 657 851 AT&T Data Communications Serv
4323 1391 1028 367 Time Warner Telecom
11492 1216 146 23 Cable One
7011 1075 312 612 Citizens Utilities
18566 1046 296 10 Covad Communications
20115 1038 830 495 Charter Communications
1785 1008 479 107 AppliedTheory Corporation
6197 989 728 477 BellSouth Network Solutions,
174 965 6835 813 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 395 1776 360 TDC Tele Danmark
8452 357 188 7 TEDATA
3301 341 1459 310 TeliaNet Sweden
3320 322 7045 267 Deutsche Telekom AG
8866 293 78 24 Bulgarian Telecommunication C
3215 277 2655 91 France Telecom Transpac
5462 275 666 26 Telewest Broadband
6746 263 127 241 Dynamic Network Technologies,
680 259 2046 258 DFN-IP service G-WiN
8708 254 421 245 Romania Data Systems S.A.
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 1187 2449 219 UniNet S.A. de C.V.
11830 556 299 9 Instituto Costarricense de El
7303 451 220 59 Telecom Argentina Stet-France
16814 426 27 10 NSS, S.A.
11172 406 116 68 Servicios Alestra S.A de C.V
6471 397 85 40 ENTEL CHILE S.A.
10620 392 103 51 TVCABLE BOGOTA
14117 352 25 15 Telefonica del Sur S.A.
22047 322 270 14 VTR PUNTO NET S.A.
10481 310 152 10 Prima S.A.
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 450 60 27 LINKdotNET AS number
3741 287 869 224 The Internet Solution
2018 254 265 126 Tertiary Education Network
20858 216 34 3 EgyNet
6713 143 135 11 Itissalat Al-MAGHRIB
33783 130 9 16 EEPAD TISP TELECOM & INTERNET
5536 121 8 16 Internet Egypt Network
33776 95 6 15 Starcomms Nigeria Limited
24835 89 48 7 RAYA Telecom - Egypt
2905 83 176 74 The Internetworking Company o
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 1772 2992 85 bellsouth.net, inc.
23577 1640 34 702 Korea Telecom (ATM-MPLS)
4755 1613 386 85 Videsh Sanchar Nigam Ltd. Aut
7018 1417 5926 999 AT&T WorldNet Services
2386 1392 657 851 AT&T Data Communications Serv
4323 1391 1028 367 Time Warner Telecom
11492 1216 146 23 Cable One
8151 1187 2449 219 UniNet S.A. de C.V.
9583 1151 140 16 Sify Limited
9498 1121 550 63 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 1613 1528 Videsh Sanchar Nigam Ltd. Aut
11492 1216 1193 Cable One
9583 1151 1135 Sify Limited
9498 1121 1058 BHARTI BT INTERNET LTD.
18566 1046 1036 Covad Communications
4323 1391 1024 Time Warner Telecom
8151 1187 968 UniNet S.A. de C.V.
17488 1034 954 Hathway IP Over Cable Interne
17676 1018 952 Softbank BB Corp.
23577 1640 938 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
26478 UNALLOCATED 8.7.228.0/24 6461 AboveNet Communicati
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 7018 AT&T WorldNet Servic
22492 UNALLOCATED 12.2.46.0/24 1239 Sprint
14984 UNALLOCATED 12.2.192.0/24 7132 SBC Internet Service
15132 UNALLOCATED 12.9.150.0/24 701 UUNET Technologies,
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 19548 Adelphia Business Solutions
24.75.192.0/18 19548 Adelphia Business Solutions
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 /11:40 /12:137
/13:277 /14:499 /15:996 /16:9791 /17:4291 /18:7289
/19:15272 /20:17492 /21:16711 /22:21212 /23:22344 /24:131091
/25:770 /26:946 /27:489 /28:106 /29:9 /30:1
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1202 1216 Cable One
2386 1093 1392 AT&T Data Communications Serv
18566 1027 1046 Covad Communications
9583 987 1151 Sify Limited
4755 960 1613 Videsh Sanchar Nigam Ltd. Aut
7011 957 1075 Citizens Utilities
6478 933 934 AT&T Worldnet Services
17488 849 1034 Hathway IP Over Cable Interne
23577 811 1640 Korea Telecom (ATM-MPLS)
9498 797 1121 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 8:102 11:1 12:1996 13:1 15:21
16:3 17:6 18:13 20:35 24:1047 25:1
32:60 33:4 38:402 40:95 41:621 44:2
47:8 52:3 55:3 56:3 57:22 58:515
59:428 60:423 61:989 62:1106 63:1959 64:3347
65:2363 66:3622 67:1066 68:661 69:2112 70:510
71:140 72:1511 73:6 74:893 75:223 76:275
77:693 78:550 79:119 80:884 81:827 82:608
83:366 84:548 85:940 86:429 87:627 88:309
89:1200 90:11 91:1124 92:237 93:152 96:18
97:16 98:100 99:3 116:554 117:275 118:78
119:352 121:406 122:722 123:301 124:804 125:1129
128:320 129:201 130:125 131:406 132:67 133:9
134:188 135:32 136:222 137:119 138:154 139:65
140:486 141:109 142:377 143:279 144:348 145:54
146:333 147:132 148:496 149:180 150:121 151:161
152:142 153:127 154:11 155:266 156:207 157:253
158:167 159:222 160:252 161:110 162:206 163:196
164:568 165:432 166:296 167:313 168:591 169:130
170:424 171:28 172:3 189:144 190:1550 192:5767
193:4101 194:3265 195:2375 196:1064 198:3762 199:3232
200:5497 201:1316 202:7465 203:7785 204:3999 205:2102
206:2414 207:2717 208:3215 209:3469 210:2519 211:1035
212:1313 213:1603 214:454 215:47 216:4221 217:1219
218:347 219:403 220:1059 221:403 222:312
End of report
