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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 27 Mar, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 249917
Prefixes after maximum aggregation: 126020
Deaggregation factor: 1.98
Unique aggregates announced to Internet: 121624
Total ASes present in the Internet Routing Table: 27725
Prefixes per ASN: 9.01
Origin-only ASes present in the Internet Routing Table: 24170
Origin ASes announcing only one prefix: 11208
Transit ASes present in the Internet Routing Table: 3555
Transit-only ASes present in the Internet Routing Table: 75
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: 25285
Unregistered ASNs in the Routing Table: 1925
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: 857
Number of addresses announced to Internet: 1848522560
Equivalent to 110 /8s, 46 /16s and 55 /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: 118942
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 42204
Total APNIC prefixes after maximum aggregation: 13453
APNIC Deaggregation factor: 3.14
Prefixes being announced from the APNIC address blocks: 54336
Unique aggregates announced from the APNIC address blocks: 23454
APNIC Region origin ASes present in the Internet Routing Table: 1901
APNIC Prefixes per ASN: 28.58
APNIC Region origin ASes announcing only one prefix: 551
APNIC Region transit ASes present in the Internet Routing Table: 347
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 336937056
Equivalent to 20 /8s, 21 /16s and 64 /24s
Percentage of available APNIC address space announced: 77.2
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: 106510
Total ARIN prefixes after maximum aggregation: 58707
ARIN Deaggregation factor: 1.81
Prefixes being announced from the ARIN address blocks: 85353
Unique aggregates announced from the ARIN address blocks: 33764
ARIN Region origin ASes present in the Internet Routing Table: 11646
ARIN Prefixes per ASN: 7.33
ARIN Region origin ASes announcing only one prefix: 4517
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: 360371328
Equivalent to 21 /8s, 122 /16s and 212 /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: 53165
Total RIPE prefixes after maximum aggregation: 33049
RIPE Deaggregation factor: 1.61
Prefixes being announced from the RIPE address blocks: 48726
Unique aggregates announced from the RIPE address blocks: 32678
RIPE Region origin ASes present in the Internet Routing Table: 11077
RIPE Prefixes per ASN: 4.40
RIPE Region origin ASes announcing only one prefix: 5782
RIPE Region transit ASes present in the Internet Routing Table: 1685
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 348127264
Equivalent to 20 /8s, 192 /16s and 0 /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: 19166
Total LACNIC prefixes after maximum aggregation: 4787
LACNIC Deaggregation factor: 4.00
Prefixes being announced from the LACNIC address blocks: 17535
Unique aggregates announced from the LACNIC address blocks: 9564
LACNIC Region origin ASes present in the Internet Routing Table: 882
LACNIC Prefixes per ASN: 19.88
LACNIC Region origin ASes announcing only one prefix: 278
LACNIC Region transit ASes present in the Internet Routing Table: 154
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 16
Number of LACNIC addresses announced to Internet: 49817856
Equivalent to 2 /8s, 248 /16s and 41 /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: 1123
AfriNIC Deaggregation factor: 3.19
Prefixes being announced from the AfriNIC address blocks: 3986
Unique aggregates announced from the AfriNIC address blocks: 1805
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: 45
Average AfriNIC Region AS path length visible: 3.9
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 10158848
Equivalent to 0 /8s, 155 /16s and 3 /24s
Percentage of available AfriNIC address space announced: 30.3
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 1615 387 86 Videsh Sanchar Nigam Ltd. Aut
9583 1149 133 154 Sify Limited
9498 1124 550 63 BHARTI BT INTERNET LTD.
17488 1038 67 81 Hathway IP Over Cable Interne
4134 852 12469 315 CHINANET-BACKBONE
4766 849 6005 340 Korea Telecom (KIX)
18101 673 126 52 Reliance Infocom Ltd Internet
9829 596 450 12 BSNL National Internet Backbo
4812 561 967 91 China Telecom (Shanghai)
1221 544 1950 419 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 1421 5926 1002 AT&T WorldNet Services
4323 1395 1028 368 Time Warner Telecom
2386 1392 658 852 AT&T Data Communications Serv
11492 1216 146 23 Cable One
7011 1080 314 616 Citizens Utilities
18566 1046 296 10 Covad Communications
1785 1008 479 107 AppliedTheory Corporation
6197 990 728 477 BellSouth Network Solutions,
174 965 6834 812 Cogent Communications
22773 900 2394 63 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
3292 395 1776 360 TDC Tele Danmark
8452 358 188 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
680 259 2046 258 DFN-IP service G-WiN
6746 256 126 236 Dynamic Network Technologies,
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 1186 2436 226 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 407 117 69 Servicios Alestra S.A de C.V
6471 396 85 39 ENTEL CHILE S.A.
10620 395 103 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 287 869 223 The Internet Solution
2018 257 276 112 Tertiary Education Network
20858 216 34 3 EgyNet
6713 143 135 11 Itissalat Al-MAGHRIB
33783 128 9 18 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
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 1638 34 700 Korea Telecom (ATM-MPLS)
4755 1615 387 86 Videsh Sanchar Nigam Ltd. Aut
7018 1421 5926 1002 AT&T WorldNet Services
4323 1395 1028 368 Time Warner Telecom
2386 1392 658 852 AT&T Data Communications Serv
11492 1216 146 23 Cable One
8151 1186 2436 226 UniNet S.A. de C.V.
9583 1149 133 154 Sify Limited
9498 1124 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 1615 1529 Videsh Sanchar Nigam Ltd. Aut
11492 1216 1193 Cable One
9498 1124 1061 BHARTI BT INTERNET LTD.
18566 1046 1036 Covad Communications
4323 1395 1027 Time Warner Telecom
9583 1149 995 Sify Limited
8151 1186 960 UniNet S.A. de C.V.
17488 1038 957 Hathway IP Over Cable Interne
17676 1018 952 Softbank BB Corp.
23577 1638 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 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 /8:19 /9:9 /10:16 /11:40 /12:137
/13:277 /14:498 /15:996 /16:9806 /17:4312 /18:7277
/19:15248 /20:17486 /21:16723 /22:21246 /23:22311 /24:131237
/25:774 /26:892 /27:488 /28:107 /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 1149 Sify Limited
7011 962 1080 Citizens Utilities
4755 960 1615 Videsh Sanchar Nigam Ltd. Aut
6478 890 891 AT&T Worldnet Services
17488 853 1038 Hathway IP Over Cable Interne
23577 810 1638 Korea Telecom (ATM-MPLS)
9498 800 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 12:1999 13:1 15:20
16:3 17:6 18:13 20:35 24:1038 25:1
32:60 33:4 38:402 40:95 41:628 44:2
47:8 52:3 55:3 56:3 57:22 58:509
59:427 60:423 61:988 62:1092 63:1957 64:3357
65:2361 66:3602 67:1067 68:658 69:2108 70:539
71:128 72:1534 73:6 74:900 75:221 76:276
77:628 78:547 79:121 80:898 81:828 82:606
83:369 84:547 85:933 86:389 87:632 88:318
89:1202 90:11 91:1125 92:235 93:153 96:19
97:16 98:108 99:3 116:575 117:277 118:99
119:328 121:454 122:721 123:306 124:807 125:1126
128:320 129:199 130:124 131:403 132:67 133:9
134:188 135:32 136:222 137:119 138:154 139:65
140:481 141:110 142:378 143:279 144:348 145:54
146:336 147:133 148:498 149:180 150:120 151:160
152:142 153:127 154:11 155:265 156:207 157:254
158:167 159:223 160:265 161:110 162:207 163:204
164:573 165:432 166:295 167:314 168:594 169:131
170:426 171:28 172:3 189:159 190:1548 192:5770
193:4094 194:3258 195:2378 196:1071 198:3761 199:3228
200:5511 201:1324 202:7516 203:7770 204:3989 205:2088
206:2412 207:2715 208:3223 209:3462 210:2519 211:1034
212:1328 213:1607 214:455 215:48 216:4290 217:1204
218:348 219:404 220:1059 221:402 222:313
End of report
