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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 28 May, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 256315
Prefixes after maximum aggregation: 127389
Deaggregation factor: 2.01
Unique aggregates announced to Internet: 124636
Total ASes present in the Internet Routing Table: 28295
Prefixes per ASN: 9.06
Origin-only ASes present in the Internet Routing Table: 24677
Origin ASes announcing only one prefix: 11871
Transit ASes present in the Internet Routing Table: 3618
Transit-only ASes present in the Internet Routing Table: 78
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 18
Max AS path prepend of ASN (39375) 13
Prefixes from unregistered ASNs in the Routing Table: 646
Unregistered ASNs in the Routing Table: 238
Number of 32-bit ASNs allocated by the RIRs: 48
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: 804
Number of addresses announced to Internet: 1871081280
Equivalent to 111 /8s, 134 /16s and 111 /24s
Percentage of available address space announced: 50.5
Percentage of allocated address space announced: 62.0
Percentage of available address space allocated: 81.4
Percentage of address space in use by end-sites: 72.0
Total number of prefixes smaller than registry allocations: 123505
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 58831
Total APNIC prefixes after maximum aggregation: 21603
APNIC Deaggregation factor: 2.72
Prefixes being announced from the APNIC address blocks: 55848
Unique aggregates announced from the APNIC address blocks: 23818
APNIC Region origin ASes present in the Internet Routing Table: 3247
APNIC Prefixes per ASN: 17.20
APNIC Region origin ASes announcing only one prefix: 850
APNIC Region transit ASes present in the Internet Routing Table: 501
Average APNIC Region AS path length visible: 3.5
Max APNIC Region AS path length visible: 16
Number of APNIC addresses announced to Internet: 349783008
Equivalent to 20 /8s, 217 /16s and 67 /24s
Percentage of available APNIC address space announced: 80.2
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: 117605
Total ARIN prefixes after maximum aggregation: 65071
ARIN Deaggregation factor: 1.81
Prefixes being announced from the ARIN address blocks: 87210
Unique aggregates announced from the ARIN address blocks: 34346
ARIN Region origin ASes present in the Internet Routing Table: 12168
ARIN Prefixes per ASN: 7.17
ARIN Region origin ASes announcing only one prefix: 4685
ARIN Region transit ASes present in the Internet Routing Table: 1132
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 357474688
Equivalent to 21 /8s, 78 /16s and 161 /24s
Percentage of available ARIN address space announced: 73.5
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, 46080-47103
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: 55231
Total RIPE prefixes after maximum aggregation: 33840
RIPE Deaggregation factor: 1.63
Prefixes being announced from the RIPE address blocks: 50413
Unique aggregates announced from the RIPE address blocks: 33896
RIPE Region origin ASes present in the Internet Routing Table: 11376
RIPE Prefixes per ASN: 4.43
RIPE Region origin ASes announcing only one prefix: 5944
RIPE Region transit ASes present in the Internet Routing Table: 1718
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 358302848
Equivalent to 21 /8s, 91 /16s and 68 /24s
Percentage of available RIPE address space announced: 82.1
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, 47104-48127
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: 20125
Total LACNIC prefixes after maximum aggregation: 5146
LACNIC Deaggregation factor: 3.91
Prefixes being announced from the LACNIC address blocks: 18436
Unique aggregates announced from the LACNIC address blocks: 10287
LACNIC Region origin ASes present in the Internet Routing Table: 950
LACNIC Prefixes per ASN: 19.41
LACNIC Region origin ASes announcing only one prefix: 314
LACNIC Region transit ASes present in the Internet Routing Table: 157
Average LACNIC Region AS path length visible: 4.2
Max LACNIC Region AS path length visible: 15
Number of LACNIC addresses announced to Internet: 51669632
Equivalent to 3 /8s, 20 /16s and 106 /24s
Percentage of available LACNIC address space announced: 51.3
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: 3877
Total AfriNIC prefixes after maximum aggregation: 1200
AfriNIC Deaggregation factor: 3.23
Prefixes being announced from the AfriNIC address blocks: 4183
Unique aggregates announced from the AfriNIC address blocks: 1856
AfriNIC Region origin ASes present in the Internet Routing Table: 242
AfriNIC Prefixes per ASN: 17.29
AfriNIC Region origin ASes announcing only one prefix: 78
AfriNIC Region transit ASes present in the Internet Routing Table: 49
Average AfriNIC Region AS path length visible: 3.8
Max AfriNIC Region AS path length visible: 15
Number of AfriNIC addresses announced to Internet: 12303616
Equivalent to 0 /8s, 187 /16s and 189 /24s
Percentage of available AfriNIC address space announced: 36.7
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 1641 387 91 Videsh Sanchar Nigam Ltd. Aut
9498 1165 550 60 BHARTI BT INTERNET LTD.
9583 1150 140 15 Sify Limited
17488 1067 70 76 Hathway IP Over Cable Interne
4134 856 12693 320 CHINANET-BACKBONE
4766 849 6006 343 Korea Telecom (KIX)
23577 820 34 702 Korea Telecom (ATM-MPLS)
18101 682 150 52 Reliance Infocom Ltd Internet
9829 595 450 12 BSNL National Internet Backbo
1221 547 1919 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
6389 1994 3087 178 bellsouth.net, inc.
4323 1465 1045 379 Time Warner Telecom
2386 1434 659 870 AT&T Data Communications Serv
7018 1378 5830 981 AT&T WorldNet Services
11492 1224 148 12 Cable One
7011 1089 302 617 Citizens Utilities
18566 1044 296 10 Covad Communications
1785 1021 510 105 AppliedTheory Corporation
6197 986 597 507 BellSouth Network Solutions,
174 969 6837 805 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 407 1772 368 TDC Tele Danmark
8452 356 188 7 TEDATA
3301 338 1460 306 TeliaNet Sweden
3320 317 7044 266 Deutsche Telekom AG
8866 297 77 21 Bulgarian Telecommunication C
5462 291 666 26 Telewest Broadband
3215 284 2702 93 France Telecom Transpac
8551 281 268 44 Bezeq International
680 275 2047 265 DFN-IP service G-WiN
6746 264 125 240 Dynamic Network Technologies,
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 1233 2464 227 UniNet S.A. de C.V.
11830 601 299 9 Instituto Costarricense de El
22047 565 270 14 VTR PUNTO NET S.A.
7303 462 226 67 Telecom Argentina Stet-France
16814 426 27 10 NSS, S.A.
6471 414 85 46 ENTEL CHILE S.A.
11172 411 118 68 Servicios Alestra S.A de C.V
10620 390 99 69 TVCABLE BOGOTA
14117 375 23 9 Telefonica del Sur S.A.
20299 321 22 90 NEWCOM AMERICAS
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 472 61 28 LINKdotNET AS number
3741 286 853 223 The Internet Solution
20858 224 34 3 EgyNet
2018 182 173 82 Tertiary Education Network
5713 174 575 108 Telkom SA Ltd
6713 145 136 12 Itissalat Al-MAGHRIB
33783 134 10 12 EEPAD TISP TELECOM & INTERNET
5536 121 8 16 Internet Egypt Network
29571 100 13 8 Ci Telecom Autonomous system
33776 100 6 3 Starcomms Nigeria Limited
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 1994 3087 178 bellsouth.net, inc.
4755 1641 387 91 Videsh Sanchar Nigam Ltd. Aut
4323 1465 1045 379 Time Warner Telecom
2386 1434 659 870 AT&T Data Communications Serv
7018 1378 5830 981 AT&T WorldNet Services
8151 1233 2464 227 UniNet S.A. de C.V.
11492 1224 148 12 Cable One
9498 1165 550 60 BHARTI BT INTERNET LTD.
9583 1150 140 15 Sify Limited
7011 1089 302 617 Citizens Utilities
Complete listing at http://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4755 1641 1550 Videsh Sanchar Nigam Ltd. Aut
11492 1224 1212 Cable One
9583 1150 1135 Sify Limited
9498 1165 1105 BHARTI BT INTERNET LTD.
4323 1465 1086 Time Warner Telecom
18566 1044 1034 Covad Communications
8151 1233 1006 UniNet S.A. de C.V.
17488 1067 991 Hathway IP Over Cable Interne
1785 1021 916 AppliedTheory Corporation
22773 945 883 Cox Communications, Inc.
Complete listing at http://thyme.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
16927 UNALLOCATED 12.0.252.0/23 701 UUNET Technologies,
22492 UNALLOCATED 12.2.46.0/24 7018 AT&T WorldNet Servic
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.14.170.0/24 7018 AT&T WorldNet Servic
13632 UNALLOCATED 12.20.55.0/24 6517 Yipes Communications
13746 UNALLOCATED 12.24.56.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.25.107.0/24 7018 AT&T WorldNet Servic
13632 UNALLOCATED 12.31.25.0/24 6517 Yipes Communications
27220 UNALLOCATED 12.35.204.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.152.0/24 7018 AT&T WorldNet Servic
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 /11:42 /12:141
/13:281 /14:512 /15:1010 /16:9919 /17:4364 /18:7278
/19:15457 /20:17908 /21:17423 /22:21784 /23:22815 /24:135048
/25:776 /26:921 /27:493 /28:80 /29:9 /30:1
/31:0 /32:9
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 1230 1994 bellsouth.net, inc.
11492 1206 1224 Cable One
2386 1133 1434 AT&T Data Communications Serv
18566 1025 1044 Covad Communications
9583 988 1150 Sify Limited
4755 987 1641 Videsh Sanchar Nigam Ltd. Aut
7011 973 1089 Citizens Utilities
6478 951 952 AT&T Worldnet Services
17488 880 1067 Hathway IP Over Cable Interne
9498 843 1165 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 8:107 12:2053 13:1 15:20 16:3
17:5 18:13 20:35 24:1076 25:1 32:61
33:3 38:424 40:93 41:650 43:1 44:2
47:12 52:3 55:3 56:3 57:23 58:511
59:465 60:443 61:994 62:1106 63:1944 64:3355
65:2414 66:3651 67:1198 68:681 69:2244 70:631
71:125 72:1759 73:5 74:976 75:215 76:308
77:663 78:615 79:169 80:900 81:861 82:582
83:393 84:569 85:1022 86:420 87:685 88:324
89:1201 90:11 91:1254 92:184 93:495 96:31
97:18 98:174 99:3 114:16 116:666 117:323
118:132 119:429 120:40 121:531 122:771 123:346
124:849 125:1128 128:325 129:200 130:131 131:404
132:66 133:9 134:178 135:33 136:220 137:90
138:151 139:69 140:484 141:99 142:399 143:310
144:356 145:50 146:365 147:153 148:500 149:182
150:131 151:184 152:141 153:135 154:10 155:273
156:174 157:271 158:165 159:222 160:256 161:114
162:227 163:186 164:525 165:448 166:309 167:323
168:608 169:131 170:425 171:28 172:10 189:174
190:2002 192:5791 193:4096 194:3206 195:2447 196:1074
198:3740 199:3259 200:5615 201:1419 202:7597 203:7869
204:3994 205:2072 206:2401 207:2761 208:3338 209:3425
210:2522 211:1052 212:1390 213:1642 214:466 215:49
216:4350 217:1187 218:354 219:414 220:1079 221:466
222:296
End of report
