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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sun 02 Mar, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 247745
Prefixes after maximum aggregation: 125248
Deaggregation factor: 1.98
Unique aggregates announced to Internet: 119851
Total ASes present in the Internet Routing Table: 27499
Prefixes per ASN: 9.01
Origin-only ASes present in the Internet Routing Table: 23971
Origin ASes announcing only one prefix: 11633
Transit ASes present in the Internet Routing Table: 3528
Transit-only ASes present in the Internet Routing Table: 74
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 19
Max AS path prepend of ASN (43380) 13
Prefixes from unregistered ASNs in the Routing Table: 40
Unregistered ASNs in the Routing Table: 13
Number of 32-bit ASNs allocated by the RIRs: 45
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: 1856800320
Equivalent to 110 /8s, 172 /16s and 134 /24s
Percentage of available address space announced: 50.1
Percentage of allocated address space announced: 61.5
Percentage of available address space allocated: 81.4
Percentage of address space in use by end-sites: 70.7
Total number of prefixes smaller than registry allocations: 117497
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 56545
Total APNIC prefixes after maximum aggregation: 20852
APNIC Deaggregation factor: 2.71
Prefixes being announced from the APNIC address blocks: 54032
Unique aggregates announced from the APNIC address blocks: 22917
APNIC Region origin ASes present in the Internet Routing Table: 3143
APNIC Prefixes per ASN: 17.19
APNIC Region origin ASes announcing only one prefix: 833
APNIC Region transit ASes present in the Internet Routing Table: 481
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 334551744
Equivalent to 19 /8s, 240 /16s and 218 /24s
Percentage of available APNIC address space announced: 76.7
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: 116127
Total ARIN prefixes after maximum aggregation: 65545
ARIN Deaggregation factor: 1.77
Prefixes being announced from the ARIN address blocks: 84831
Unique aggregates announced from the ARIN address blocks: 33395
ARIN Region origin ASes present in the Internet Routing Table: 12174
ARIN Prefixes per ASN: 6.97
ARIN Region origin ASes announcing only one prefix: 4703
ARIN Region transit ASes present in the Internet Routing Table: 1148
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 15
Number of ARIN addresses announced to Internet: 356427392
Equivalent to 21 /8s, 62 /16s and 166 /24s
Percentage of available ARIN address space announced: 73.3
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: 52635
Total RIPE prefixes after maximum aggregation: 32955
RIPE Deaggregation factor: 1.60
Prefixes being announced from the RIPE address blocks: 47750
Unique aggregates announced from the RIPE address blocks: 32114
RIPE Region origin ASes present in the Internet Routing Table: 10969
RIPE Prefixes per ASN: 4.35
RIPE Region origin ASes announcing only one prefix: 5721
RIPE Region transit ASes present in the Internet Routing Table: 1668
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 346885376
Equivalent to 20 /8s, 173 /16s and 13 /24s
Percentage of available RIPE address space announced: 79.5
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: 18824
Total LACNIC prefixes after maximum aggregation: 4760
LACNIC Deaggregation factor: 3.95
Prefixes being announced from the LACNIC address blocks: 17201
Unique aggregates announced from the LACNIC address blocks: 9381
LACNIC Region origin ASes present in the Internet Routing Table: 908
LACNIC Prefixes per ASN: 18.94
LACNIC Region origin ASes announcing only one prefix: 300
LACNIC Region transit ASes present in the Internet Routing Table: 156
Average LACNIC Region AS path length visible: 3.9
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 48798720
Equivalent to 2 /8s, 232 /16s and 156 /24s
Percentage of available LACNIC address space announced: 48.5
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: 3571
Total AfriNIC prefixes after maximum aggregation: 1120
AfriNIC Deaggregation factor: 3.19
Prefixes being announced from the AfriNIC address blocks: 4006
Unique aggregates announced from the AfriNIC address blocks: 1808
AfriNIC Region origin ASes present in the Internet Routing Table: 230
AfriNIC Prefixes per ASN: 17.42
AfriNIC Region origin ASes announcing only one prefix: 76
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: 10019584
Equivalent to 0 /8s, 152 /16s and 227 /24s
Percentage of available AfriNIC address space announced: 29.9
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 1586 386 81 Videsh Sanchar Nigam Ltd. Aut
9583 1153 109 24 Sify Limited
9498 1149 550 65 BHARTI BT INTERNET LTD.
17488 996 64 89 Hathway IP Over Cable Interne
4134 853 12363 314 CHINANET-BACKBONE
4766 842 6005 337 Korea Telecom (KIX)
23577 812 34 696 Korea Telecom (ATM-MPLS)
18101 709 127 62 Reliance Infocom Ltd Internet
9829 595 449 11 BSNL National Internet Backbo
4812 558 949 89 China Telecom (Shanghai)
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 1427 5991 991 AT&T WorldNet Services
4323 1381 1011 366 Time Warner Telecom
2386 1374 638 834 AT&T Data Communications Serv
11492 1211 144 26 Cable One
7011 1059 308 611 Citizens Utilities
18566 1042 296 10 Covad Communications
6197 995 729 475 BellSouth Network Solutions,
174 991 6835 817 Cogent Communications
6478 930 237 108 AT&T Worldnet Services
20115 890 810 486 Charter 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 398 1778 363 TDC Tele Danmark
8452 395 188 7 TEDATA
3301 336 1443 306 TeliaNet Sweden
3320 325 7045 269 Deutsche Telekom AG
8866 291 78 24 Bulgarian Telecommunication C
8551 279 267 42 Bezeq International
680 276 2046 256 DFN-IP service G-WiN
5462 275 666 26 Telewest Broadband
8708 275 421 245 Romania Data Systems S.A.
3215 271 2607 94 France Telecom Transpac
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 1172 2437 218 UniNet S.A. de C.V.
11830 554 299 18 Instituto Costarricense de El
7303 445 216 56 Telecom Argentina Stet-France
16814 426 27 10 NSS, S.A.
11172 401 116 67 Servicios Alestra S.A de C.V
6471 399 85 40 ENTEL CHILE S.A.
10620 366 96 49 TVCABLE BOGOTA
14117 352 25 15 Telefonica del Sur S.A.
10481 330 124 10 Prima S.A.
22047 323 270 14 VTR PUNTO NET 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 444 60 27 LINKdotNET AS number
3741 288 869 224 The Internet Solution
2018 246 276 111 Tertiary Education Network
20858 217 34 4 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 90 48 7 RAYA Telecom - Egypt
23889 87 24 16 MAURITIUS TELECOM
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
4755 1586 386 81 Videsh Sanchar Nigam Ltd. Aut
7018 1427 5991 991 AT&T WorldNet Services
4323 1381 1011 366 Time Warner Telecom
2386 1374 638 834 AT&T Data Communications Serv
11492 1211 144 26 Cable One
8151 1172 2437 218 UniNet S.A. de C.V.
9583 1153 109 24 Sify Limited
9498 1149 550 65 BHARTI BT INTERNET LTD.
7011 1059 308 611 Citizens Utilities
18566 1042 296 10 Covad Communications
Complete listing at http://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
11492 1211 1185 Cable One
9583 1153 1129 Sify Limited
9498 1149 1084 BHARTI BT INTERNET LTD.
18566 1042 1032 Covad Communications
4323 1381 1015 Time Warner Telecom
8151 1172 954 UniNet S.A. de C.V.
17488 996 907 Hathway IP Over Cable Interne
6478 930 822 AT&T Worldnet Services
22773 881 816 Cox Communications, Inc.
6389 886 802 bellsouth.net, inc.
Complete listing at http://thyme.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
18506 UNALLOCATED 63.107.123.0/24 701 UUNET Technologies,
16886 UNALLOCATED 63.109.3.0/24 1239 Sprint
16886 UNALLOCATED 63.167.139.0/24 1239 Sprint
33526 UNALLOCATED 64.128.26.0/24 4323 Time Warner Telecom
65000 PRIVATE 78.108.160.0/24 39010 TerraNet sal
65000 PRIVATE 78.108.163.0/24 39010 TerraNet sal
65000 PRIVATE 78.108.164.0/24 39010 TerraNet sal
65000 PRIVATE 92.62.240.0/20 24750 Cable Internet Syste
64601 PRIVATE 118.232.77.0/24 9924 Taiwan Fixed Network
64601 PRIVATE 118.232.78.0/24 9924 Taiwan Fixed Network
Complete listing at http://thyme.apnic.net/current/data-badAS
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
24.48.10.0/23 19548 Adelphia Business Solutions
24.48.12.0/22 19548 Adelphia Business Solutions
24.48.80.0/21 19548 Adelphia Business Solutions
24.54.224.0/19 20001 HoldCo LLC - Road Runner
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 /8:20 /9:9 /10:16 /11:39 /12:138
/13:276 /14:496 /15:989 /16:9766 /17:4260 /18:7154
/19:15187 /20:17356 /21:16541 /22:20949 /23:22015 /24:129830
/25:892 /26:1118 /27:568 /28:108 /29:9 /30:1
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1198 1211 Cable One
2386 1081 1374 AT&T Data Communications Serv
18566 1023 1042 Covad Communications
9583 989 1153 Sify Limited
7011 942 1059 Citizens Utilities
4755 937 1586 Videsh Sanchar Nigam Ltd. Aut
6478 929 930 AT&T Worldnet Services
9498 811 1149 BHARTI BT INTERNET LTD.
17488 811 996 Hathway IP Over Cable Interne
23577 803 812 Korea Telecom (ATM-MPLS)
Complete listing at http://thyme.apnic.net/current/data/sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:9 8:101 12:1985 13:2 15:21 16:3
17:6 18:13 20:35 24:1033 25:1 31:1
32:61 33:4 38:394 40:65 41:615 44:2
47:8 52:3 55:3 56:3 57:22 58:520
59:426 60:407 61:983 62:1088 63:1958 64:3357
65:2370 66:3661 67:1151 68:632 69:2100 70:488
71:123 72:1482 73:6 74:852 75:236 76:259
77:561 78:505 79:86 80:885 81:817 82:594
83:354 84:533 85:1000 86:387 87:628 88:296
89:1178 90:12 91:1056 92:141 93:96 96:16
97:14 98:86 99:3 114:1 115:1 116:535
117:269 118:77 119:162 121:401 122:714 123:294
124:813 125:1104 128:321 129:199 130:132 131:402
132:69 133:9 134:188 135:37 136:221 137:118
138:153 139:61 140:487 141:108 142:377 143:271
144:338 145:53 146:336 147:131 148:484 149:178
150:123 151:149 152:92 153:131 154:11 155:269
156:202 157:250 158:164 159:218 160:246 161:101
162:204 163:195 164:563 165:428 166:295 167:309
168:588 169:133 170:425 171:28 172:3 189:159
190:1395 192:5760 193:4100 194:3257 195:2347 196:1078
198:3771 199:3197 200:5462 201:1298 202:7551 203:7782
204:3963 205:2080 206:2404 207:2728 208:3179 209:3556
210:2539 211:1031 212:1296 213:1597 214:437 215:48
216:4159 217:1201 218:338 219:399 220:1098 221:403
222:309
End of report
