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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sun 23 Mar, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 249797
Prefixes after maximum aggregation: 125641
Deaggregation factor: 1.99
Unique aggregates announced to Internet: 121371
Total ASes present in the Internet Routing Table: 27701
Prefixes per ASN: 9.02
Origin-only ASes present in the Internet Routing Table: 24150
Origin ASes announcing only one prefix: 11197
Transit ASes present in the Internet Routing Table: 3551
Transit-only ASes present in the Internet Routing Table: 77
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: 25258
Unregistered ASNs in the Routing Table: 1924
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: 874
Number of addresses announced to Internet: 1847558400
Equivalent to 110 /8s, 31 /16s and 129 /24s
Percentage of available address space announced: 49.8
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: 118845
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 42268
Total APNIC prefixes after maximum aggregation: 13268
APNIC Deaggregation factor: 3.19
Prefixes being announced from the APNIC address blocks: 54411
Unique aggregates announced from the APNIC address blocks: 23163
APNIC Region origin ASes present in the Internet Routing Table: 1904
APNIC Prefixes per ASN: 28.58
APNIC Region origin ASes announcing only one prefix: 553
APNIC Region transit ASes present in the Internet Routing Table: 348
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 336428640
Equivalent to 20 /8s, 13 /16s and 126 /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: 106516
Total ARIN prefixes after maximum aggregation: 58596
ARIN Deaggregation factor: 1.82
Prefixes being announced from the ARIN address blocks: 85325
Unique aggregates announced from the ARIN address blocks: 33818
ARIN Region origin ASes present in the Internet Routing Table: 11636
ARIN Prefixes per ASN: 7.33
ARIN Region origin ASes announcing only one prefix: 4511
ARIN Region transit ASes present in the Internet Routing Table: 1037
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 15
Number of ARIN addresses announced to Internet: 360307712
Equivalent to 21 /8s, 121 /16s and 220 /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: 53051
Total RIPE prefixes after maximum aggregation: 32998
RIPE Deaggregation factor: 1.61
Prefixes being announced from the RIPE address blocks: 48600
Unique aggregates announced from the RIPE address blocks: 32673
RIPE Region origin ASes present in the Internet Routing Table: 11060
RIPE Prefixes per ASN: 4.39
RIPE Region origin ASes announcing only one prefix: 5775
RIPE Region transit ASes present in the Internet Routing Table: 1681
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 347967776
Equivalent to 20 /8s, 189 /16s and 145 /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: 19116
Total LACNIC prefixes after maximum aggregation: 4772
LACNIC Deaggregation factor: 4.01
Prefixes being announced from the LACNIC address blocks: 17484
Unique aggregates announced from the LACNIC address blocks: 9546
LACNIC Region origin ASes present in the Internet Routing Table: 880
LACNIC Prefixes per ASN: 19.87
LACNIC Region origin ASes announcing only one prefix: 278
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: 49791616
Equivalent to 2 /8s, 247 /16s and 194 /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: 3587
Total AfriNIC prefixes after maximum aggregation: 1131
AfriNIC Deaggregation factor: 3.17
Prefixes being announced from the AfriNIC address blocks: 3987
Unique aggregates announced from the AfriNIC address blocks: 1809
AfriNIC Region origin ASes present in the Internet Routing Table: 233
AfriNIC Prefixes per ASN: 17.11
AfriNIC Region origin ASes announcing only one prefix: 80
AfriNIC Region transit ASes present in the Internet Routing Table: 43
Average AfriNIC Region AS path length visible: 3.8
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 10075648
Equivalent to 0 /8s, 153 /16s and 190 /24s
Percentage of available AfriNIC address space announced: 30.0
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 1612 386 85 Videsh Sanchar Nigam Ltd. Aut
9583 1150 140 16 Sify Limited
9498 1124 551 65 BHARTI BT INTERNET LTD.
17488 1033 66 86 Hathway IP Over Cable Interne
4134 855 12473 317 CHINANET-BACKBONE
4766 849 6005 340 Korea Telecom (KIX)
18101 673 126 52 Reliance Infocom Ltd Internet
9829 593 449 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 1418 5926 1000 AT&T WorldNet Services
4323 1392 1028 367 Time Warner Telecom
2386 1390 657 850 AT&T Data Communications Serv
11492 1216 146 23 Cable One
7011 1073 312 610 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,
174 968 6836 816 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 360 188 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 1184 2449 221 UniNet S.A. de C.V.
11830 556 299 9 Instituto Costarricense de El
7303 452 220 60 Telecom Argentina Stet-France
16814 426 27 10 NSS, S.A.
11172 406 116 68 Servicios Alestra S.A de C.V
6471 395 85 39 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 451 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 99 6 7 Starcomms Nigeria Limited
24835 89 48 7 RAYA Telecom - Egypt
29571 80 13 7 Ci Telecom Autonomous system
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 1768 2992 85 bellsouth.net, inc.
23577 1644 34 703 Korea Telecom (ATM-MPLS)
4755 1612 386 85 Videsh Sanchar Nigam Ltd. Aut
7018 1418 5926 1000 AT&T WorldNet Services
4323 1392 1028 367 Time Warner Telecom
2386 1390 657 850 AT&T Data Communications Serv
11492 1216 146 23 Cable One
8151 1184 2449 221 UniNet S.A. de C.V.
9583 1150 140 16 Sify Limited
9498 1124 551 65 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 1612 1527 Videsh Sanchar Nigam Ltd. Aut
11492 1216 1193 Cable One
9583 1150 1134 Sify Limited
9498 1124 1059 BHARTI BT INTERNET LTD.
18566 1046 1036 Covad Communications
4323 1392 1025 Time Warner Telecom
8151 1184 963 UniNet S.A. de C.V.
17676 1018 952 Softbank BB Corp.
17488 1033 947 Hathway IP Over Cable Interne
23577 1644 941 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 /16:9789 /17:4284 /18:7288
/19:15270 /20:17490 /21:16718 /22:21214 /23:22373 /24:131059
/25:766 /26:944 /27:489 /28:102 /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 1091 1390 AT&T Data Communications Serv
18566 1027 1046 Covad Communications
9583 986 1150 Sify Limited
4755 959 1612 Videsh Sanchar Nigam Ltd. Aut
7011 955 1073 Citizens Utilities
6478 933 934 AT&T Worldnet Services
17488 848 1033 Hathway IP Over Cable Interne
23577 813 1644 Korea Telecom (ATM-MPLS)
9498 797 1124 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 12:1998 13:1 15:21
16:3 17:6 18:13 20:35 24:1046 25:1
32:59 33:4 38:405 40:95 41:625 44:2
47:8 52:3 55:3 56:3 57:22 58:515
59:427 60:422 61:984 62:1107 63:1960 64:3348
65:2359 66:3624 67:1066 68:661 69:2109 70:510
71:141 72:1522 73:6 74:886 75:222 76:275
77:620 78:543 79:120 80:883 81:827 82:609
83:363 84:549 85:945 86:391 87:633 88:309
89:1206 90:11 91:1118 92:235 93:151 96:18
97:16 98:100 99:3 116:569 117:278 118:77
119:350 121:470 122:723 123:298 124:803 125:1126
128:320 129:201 130:125 131:405 132:67 133:9
134:188 135:32 136:216 137:119 138:154 139:65
140:484 141:109 142:377 143:278 144:346 145:54
146:334 147:132 148:492 149:180 150:121 151:161
152:142 153:127 154:11 155:266 156:208 157:251
158:167 159:222 160:265 161:110 162:206 163:195
164:568 165:431 166:296 167:313 168:593 169:128
170:425 171:28 172:2 189:145 190:1535 192:5767
193:4098 194:3263 195:2370 196:1057 198:3760 199:3233
200:5493 201:1316 202:7534 203:7794 204:3999 205:2080
206:2415 207:2719 208:3208 209:3473 210:2523 211:1035
212:1292 213:1604 214:454 215:48 216:4227 217:1217
218:347 219:403 220:1059 221:402 222:313
End of report
