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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Mon 25 Feb, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 246943
Prefixes after maximum aggregation: 125594
Deaggregation factor: 1.97
Unique aggregates announced to Internet: 120586
Total ASes present in the Internet Routing Table: 27442
Prefixes per ASN: 9.00
Origin-only ASes present in the Internet Routing Table: 23928
Origin ASes announcing only one prefix: 11616
Transit ASes present in the Internet Routing Table: 3514
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: 19
Max AS path prepend of ASN (29642) 15
Prefixes from unregistered ASNs in the Routing Table: 49
Unregistered ASNs in the Routing Table: 16
Number of 32-bit ASNs allocated by the RIRs: 46
Prefixes from 32-bit ASNs in the Routing Table: 9
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 876
Number of addresses announced to Internet: 1835650304
Equivalent to 109 /8s, 105 /16s and 205 /24s
Percentage of available address space announced: 49.5
Percentage of allocated address space announced: 60.8
Percentage of available address space allocated: 81.4
Percentage of address space in use by end-sites: 70.4
Total number of prefixes smaller than registry allocations: 116844
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 56554
Total APNIC prefixes after maximum aggregation: 21220
APNIC Deaggregation factor: 2.67
Prefixes being announced from the APNIC address blocks: 54041
Unique aggregates announced from the APNIC address blocks: 23939
APNIC Region origin ASes present in the Internet Routing Table: 3136
APNIC Prefixes per ASN: 17.23
APNIC Region origin ASes announcing only one prefix: 827
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: 15
Number of APNIC addresses announced to Internet: 330782144
Equivalent to 19 /8s, 183 /16s and 85 /24s
Percentage of available APNIC address space announced: 75.8
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: 115755
Total ARIN prefixes after maximum aggregation: 65627
ARIN Deaggregation factor: 1.76
Prefixes being announced from the ARIN address blocks: 84547
Unique aggregates announced from the ARIN address blocks: 33350
ARIN Region origin ASes present in the Internet Routing Table: 12153
ARIN Prefixes per ASN: 6.96
ARIN Region origin ASes announcing only one prefix: 4692
ARIN Region transit ASes present in the Internet Routing Table: 1149
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 15
Number of ARIN addresses announced to Internet: 356338560
Equivalent to 21 /8s, 61 /16s and 75 /24s
Percentage of available ARIN address space announced: 73.2
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: 52400
Total RIPE prefixes after maximum aggregation: 32871
RIPE Deaggregation factor: 1.59
Prefixes being announced from the RIPE address blocks: 47530
Unique aggregates announced from the RIPE address blocks: 31943
RIPE Region origin ASes present in the Internet Routing Table: 10940
RIPE Prefixes per ASN: 4.34
RIPE Region origin ASes announcing only one prefix: 5723
RIPE Region transit ASes present in the Internet Routing Table: 1652
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 346475520
Equivalent to 20 /8s, 166 /16s and 204 /24s
Percentage of available RIPE address space announced: 79.4
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: 18679
Total LACNIC prefixes after maximum aggregation: 4738
LACNIC Deaggregation factor: 3.94
Prefixes being announced from the LACNIC address blocks: 17066
Unique aggregates announced from the LACNIC address blocks: 9356
LACNIC Region origin ASes present in the Internet Routing Table: 908
LACNIC Prefixes per ASN: 18.80
LACNIC Region origin ASes announcing only one prefix: 301
LACNIC Region transit ASes present in the Internet Routing Table: 152
Average LACNIC Region AS path length visible: 3.9
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 48444672
Equivalent to 2 /8s, 227 /16s and 53 /24s
Percentage of available LACNIC address space announced: 48.1
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: 3505
Total AfriNIC prefixes after maximum aggregation: 1120
AfriNIC Deaggregation factor: 3.13
Prefixes being announced from the AfriNIC address blocks: 3944
Unique aggregates announced from the AfriNIC address blocks: 1795
AfriNIC Region origin ASes present in the Internet Routing Table: 229
AfriNIC Prefixes per ASN: 17.22
AfriNIC Region origin ASes announcing only one prefix: 73
AfriNIC Region transit ASes present in the Internet Routing Table: 45
Average AfriNIC Region AS path length visible: 3.8
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 9979136
Equivalent to 0 /8s, 152 /16s and 69 /24s
Percentage of available AfriNIC address space announced: 29.7
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 1581 386 81 Videsh Sanchar Nigam Ltd. Aut
9583 1138 84 442 Sify Limited
9498 1133 550 64 BHARTI BT INTERNET LTD.
17488 992 64 89 Hathway IP Over Cable Interne
4766 854 5495 345 Korea Telecom (KIX)
4134 851 12085 313 CHINANET-BACKBONE
23577 811 34 696 Korea Telecom (ATM-MPLS)
18101 708 127 62 Reliance Infocom Ltd Internet
9829 596 449 11 BSNL National Internet Backbo
4812 553 940 85 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 1424 5988 990 AT&T WorldNet Services
4323 1372 1011 361 Time Warner Telecom
2386 1279 634 836 AT&T Data Communications Serv
11492 1207 138 31 Cable One
7011 1061 308 614 Citizens Utilities
18566 1042 296 10 Covad Communications
6197 1037 762 511 BellSouth Network Solutions,
174 980 6835 811 Cogent Communications
6478 927 237 112 AT&T Worldnet Services
20115 887 808 484 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 396 1778 361 TDC Tele Danmark
8452 392 188 7 TEDATA
3301 335 1443 305 TeliaNet Sweden
3320 325 7045 269 Deutsche Telekom AG
8866 289 78 24 Bulgarian Telecommunication C
8551 278 267 42 Bezeq International
680 275 2046 256 DFN-IP service G-WiN
3215 273 2607 94 France Telecom Transpac
8708 272 420 242 Romania Data Systems S.A.
6746 269 128 247 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 1170 2438 219 UniNet S.A. de C.V.
11830 555 299 9 Instituto Costarricense de El
7303 445 216 56 Telecom Argentina Stet-France
16814 426 27 10 NSS, S.A.
11172 398 115 65 Servicios Alestra S.A de C.V
6471 395 85 40 ENTEL CHILE S.A.
10620 366 96 49 TVCABLE BOGOTA
14117 352 25 15 Telefonica del Sur S.A.
22047 323 270 14 VTR PUNTO NET S.A.
10481 301 120 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 414 60 30 LINKdotNET AS number
3741 282 869 224 The Internet Solution
2018 244 276 110 Tertiary Education Network
20858 210 34 3 EgyNet
6713 143 135 11 Itissalat Al-MAGHRIB
33783 129 9 15 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
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 1581 386 81 Videsh Sanchar Nigam Ltd. Aut
7018 1424 5988 990 AT&T WorldNet Services
4323 1372 1011 361 Time Warner Telecom
2386 1279 634 836 AT&T Data Communications Serv
11492 1207 138 31 Cable One
8151 1170 2438 219 UniNet S.A. de C.V.
9583 1138 84 442 Sify Limited
9498 1133 550 64 BHARTI BT INTERNET LTD.
7011 1061 308 614 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 1207 1176 Cable One
9498 1133 1069 BHARTI BT INTERNET LTD.
18566 1042 1032 Covad Communications
4323 1372 1011 Time Warner Telecom
8151 1170 951 UniNet S.A. de C.V.
17488 992 903 Hathway IP Over Cable Interne
6478 927 815 AT&T Worldnet Services
22773 874 809 Cox Communications, Inc.
19262 884 733 Verizon Global Networks
9583 1138 696 Sify Limited
Complete listing at http://thyme.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
15190 UNALLOCATED 63.98.176.0/24 701 UUNET Technologies,
18506 UNALLOCATED 63.107.123.0/24 33286 Turlock Irrigation D
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
21624 UNALLOCATED 65.163.176.0/24 701 UUNET Technologies,
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
64601 PRIVATE 118.232.224.0/21 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 /8:19 /9:9 /10:16 /11:39 /12:134
/13:276 /14:494 /15:984 /16:9771 /17:4248 /18:7122
/19:15156 /20:17325 /21:16448 /22:20821 /23:21928 /24:129474
/25:878 /26:1109 /27:570 /28:104 /29:9 /30:1
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1195 1207 Cable One
18566 1023 1042 Covad Communications
2386 985 1279 AT&T Data Communications Serv
9583 982 1138 Sify Limited
7011 944 1061 Citizens Utilities
4755 933 1581 Videsh Sanchar Nigam Ltd. Aut
6478 926 927 AT&T Worldnet Services
17488 807 992 Hathway IP Over Cable Interne
9498 803 1133 BHARTI BT INTERNET LTD.
23577 802 811 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 12:1980 13:2 15:21 16:3
17:6 18:13 20:35 24:1027 25:1 32:61
33:4 38:390 40:65 41:602 44:2 47:8
52:3 55:3 56:3 57:22 58:523 59:424
60:407 61:988 62:1077 63:1951 64:3358 65:2366
66:3640 67:1136 68:629 69:2101 70:485 71:122
72:1454 73:6 74:845 75:237 76:259 77:557
78:497 79:81 80:877 81:821 82:587 83:354
84:521 85:1001 86:395 87:650 88:295 89:1167
90:12 91:1040 92:135 93:79 95:2 96:13
97:10 98:75 99:3 114:1 115:1 116:533
117:261 118:77 119:154 121:438 122:707 123:290
124:804 125:1097 128:310 129:198 130:132 131:399
132:69 133:9 134:188 135:37 136:220 137:117
138:153 139:63 140:487 141:108 142:377 143:272
144:339 145:53 146:335 147:131 148:483 149:178
150:124 151:148 152:93 153:131 154:11 155:290
156:202 157:250 158:164 159:217 160:231 161:102
162:202 163:195 164:567 165:424 166:227 167:307
168:583 169:132 170:433 171:28 172:3 189:154
190:1391 192:5757 193:4102 194:3248 195:2338 196:1070
198:3773 199:3196 200:5456 201:1277 202:7588 203:7801
204:3970 205:2056 206:2414 207:2729 208:3146 209:3553
210:2530 211:1032 212:1275 213:1590 214:450 215:47
216:4160 217:1201 218:337 219:398 220:1099 221:402
222:308
End of report
