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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Thu 20 Mar, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 249120
Prefixes after maximum aggregation: 125551
Deaggregation factor: 1.98
Unique aggregates announced to Internet: 121133
Total ASes present in the Internet Routing Table: 27689
Prefixes per ASN: 9.00
Origin-only ASes present in the Internet Routing Table: 24147
Origin ASes announcing only one prefix: 11710
Transit ASes present in the Internet Routing Table: 3542
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: 18
Max AS path prepend of ASN (43380) 13
Prefixes from unregistered ASNs in the Routing Table: 47
Unregistered ASNs in the Routing Table: 18
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: 872
Number of addresses announced to Internet: 1846258176
Equivalent to 110 /8s, 11 /16s and 170 /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: 70.9
Total number of prefixes smaller than registry allocations: 118435
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 56723
Total APNIC prefixes after maximum aggregation: 20901
APNIC Deaggregation factor: 2.71
Prefixes being announced from the APNIC address blocks: 54285
Unique aggregates announced from the APNIC address blocks: 23170
APNIC Region origin ASes present in the Internet Routing Table: 3166
APNIC Prefixes per ASN: 17.15
APNIC Region origin ASes announcing only one prefix: 848
APNIC Region transit ASes present in the Internet Routing Table: 484
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 336070240
Equivalent to 20 /8s, 8 /16s and 6 /24s
Percentage of available APNIC address space announced: 77.0
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: 116371
Total ARIN prefixes after maximum aggregation: 65617
ARIN Deaggregation factor: 1.77
Prefixes being announced from the ARIN address blocks: 85027
Unique aggregates announced from the ARIN address blocks: 33704
ARIN Region origin ASes present in the Internet Routing Table: 12237
ARIN Prefixes per ASN: 6.95
ARIN Region origin ASes announcing only one prefix: 4704
ARIN Region transit ASes present in the Internet Routing Table: 1142
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 15
Number of ARIN addresses announced to Internet: 359217024
Equivalent to 21 /8s, 105 /16s and 55 /24s
Percentage of available ARIN address space announced: 73.8
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: 53310
Total RIPE prefixes after maximum aggregation: 33105
RIPE Deaggregation factor: 1.61
Prefixes being announced from the RIPE address blocks: 48422
Unique aggregates announced from the RIPE address blocks: 32575
RIPE Region origin ASes present in the Internet Routing Table: 11068
RIPE Prefixes per ASN: 4.37
RIPE Region origin ASes announcing only one prefix: 5781
RIPE Region transit ASes present in the Internet Routing Table: 1683
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 347723808
Equivalent to 20 /8s, 185 /16s and 216 /24s
Percentage of available RIPE address space announced: 79.7
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: 19097
Total LACNIC prefixes after maximum aggregation: 4786
LACNIC Deaggregation factor: 3.99
Prefixes being announced from the LACNIC address blocks: 17427
Unique aggregates announced from the LACNIC address blocks: 9539
LACNIC Region origin ASes present in the Internet Routing Table: 913
LACNIC Prefixes per ASN: 19.09
LACNIC Region origin ASes announcing only one prefix: 301
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: 18
Number of LACNIC addresses announced to Internet: 49783552
Equivalent to 2 /8s, 247 /16s and 163 /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: 3570
Total AfriNIC prefixes after maximum aggregation: 1126
AfriNIC Deaggregation factor: 3.17
Prefixes being announced from the AfriNIC address blocks: 3996
Unique aggregates announced from the AfriNIC address blocks: 1800
AfriNIC Region origin ASes present in the Internet Routing Table: 230
AfriNIC Prefixes per ASN: 17.37
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: 10153984
Equivalent to 0 /8s, 154 /16s and 240 /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 1552 381 128 Videsh Sanchar Nigam Ltd. Aut
9583 1151 140 16 Sify Limited
9498 1116 550 66 BHARTI BT INTERNET LTD.
17488 1018 65 95 Hathway IP Over Cable Interne
4134 852 12470 316 CHINANET-BACKBONE
4766 849 6005 340 Korea Telecom (KIX)
23577 821 34 702 Korea Telecom (ATM-MPLS)
18101 673 126 52 Reliance Infocom Ltd Internet
9829 594 449 11 BSNL National Internet Backbo
4812 561 967 91 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 1417 5926 1000 AT&T WorldNet Services
4323 1390 1012 365 Time Warner Telecom
2386 1389 657 848 AT&T Data Communications Serv
11492 1217 146 16 Cable One
7011 1068 311 608 Citizens Utilities
18566 1046 296 10 Covad Communications
1785 1007 479 107 AppliedTheory Corporation
6197 989 728 477 BellSouth Network Solutions,
174 967 6836 815 Cogent Communications
6478 933 238 112 AT&T Worldnet Services
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 387 1775 352 TDC Tele Danmark
8452 383 188 7 TEDATA
3301 343 1459 310 TeliaNet Sweden
3320 322 7045 267 Deutsche Telekom AG
8866 293 78 24 Bulgarian Telecommunication C
8551 279 267 42 Bezeq International
3215 276 2639 90 France Telecom Transpac
5462 275 666 26 Telewest Broadband
6746 264 127 242 Dynamic Network Technologies,
680 258 2046 258 DFN-IP service G-WiN
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 2449 222 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 405 116 68 Servicios Alestra S.A de C.V
6471 396 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 451 60 27 LINKdotNET AS number
3741 287 869 224 The Internet Solution
2018 252 276 119 Tertiary Education Network
20858 215 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
4755 1552 381 128 Videsh Sanchar Nigam Ltd. Aut
7018 1417 5926 1000 AT&T WorldNet Services
4323 1390 1012 365 Time Warner Telecom
2386 1389 657 848 AT&T Data Communications Serv
11492 1217 146 16 Cable One
8151 1186 2449 222 UniNet S.A. de C.V.
9583 1151 140 16 Sify Limited
9498 1116 550 66 BHARTI BT INTERNET LTD.
7011 1068 311 608 Citizens Utilities
18566 1046 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 1217 1201 Cable One
9583 1151 1135 Sify Limited
9498 1116 1050 BHARTI BT INTERNET LTD.
18566 1046 1036 Covad Communications
4323 1390 1025 Time Warner Telecom
8151 1186 964 UniNet S.A. de C.V.
17488 1018 923 Hathway IP Over Cable Interne
1785 1007 900 AppliedTheory Corporation
22773 893 830 Cox Communications, Inc.
6478 933 821 AT&T Worldnet Services
Complete listing at http://thyme.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
25639 UNALLOCATED 12.41.169.0/24 7018 AT&T WorldNet Servic
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
65382 PRIVATE 72.158.126.0/24 6381 bellsouth.net, inc.
65383 PRIVATE 72.158.127.0/24 6381 bellsouth.net, inc.
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
24.51.159.0/24 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 /11:39 /12:139
/13:278 /14:499 /15:992 /16:9791 /17:4275 /18:7227
/19:15210 /20:17448 /21:16661 /22:21123 /23:22268 /24:130804
/25:761 /26:978 /27:484 /28:81 /29:9 /30:1
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1203 1217 Cable One
2386 1090 1389 AT&T Data Communications Serv
18566 1027 1046 Covad Communications
9583 987 1151 Sify Limited
7011 950 1068 Citizens Utilities
6478 932 933 AT&T Worldnet Services
4755 925 1552 Videsh Sanchar Nigam Ltd. Aut
17488 834 1018 Hathway IP Over Cable Interne
23577 812 821 Korea Telecom (ATM-MPLS)
9498 794 1116 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 8:100 11:1 12:1997 13:2 15:21
16:3 17:6 18:13 20:35 24:1042 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
59:419 60:418 61:983 62:1094 63:1967 64:3351
65:2357 66:3622 67:1060 68:645 69:2104 70:510
71:128 72:1499 73:6 74:882 75:219 76:274
77:618 78:526 79:116 80:883 81:848 82:610
83:366 84:547 85:951 86:389 87:632 88:306
89:1196 90:11 91:1115 92:228 93:137 96:18
97:16 98:97 99:3 116:560 117:278 118:77
119:342 121:463 122:717 123:296 124:805 125:1122
128:321 129:201 130:125 131:403 132:67 133:9
134:187 135:32 136:220 137:119 138:154 139:65
140:480 141:109 142:378 143:278 144:342 145:53
146:335 147:132 148:494 149:180 150:121 151:161
152:142 153:127 154:11 155:266 156:208 157:252
158:167 159:222 160:253 161:110 162:206 163:197
164:566 165:431 166:296 167:313 168:593 169:130
170:425 171:28 172:3 189:144 190:1519 192:5767
193:4099 194:3257 195:2375 196:1063 198:3766 199:3217
200:5491 201:1323 202:7524 203:7777 204:3999 205:2090
206:2408 207:2719 208:3201 209:3474 210:2516 211:1034
212:1280 213:1605 214:452 215:48 216:4219 217:1232
218:347 219:391 220:1060 221:403 222:313
End of report
