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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Sun 12 Aug, 2007
Report Website: http://thyme.apnic.net
This report: http://thyme.apnic.net/ap-data/2007/08/12/0400
Analysis Summary
----------------
BGP routing table entries examined: 227921
Prefixes after maximum aggregation: 119455
Deaggregation factor: 1.91
Unique aggregates announced to Internet: 110845
Total ASes present in the Internet Routing Table: 25916
Prefixes per ASN: 8.79
Origin-only ASes present in the Internet Routing Table: 22576
Origin ASes announcing only one prefix: 11039
Transit ASes present in the Internet Routing Table: 3340
Transit-only ASes present in the Internet Routing Table: 76
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 21
Max AS path prepend of ASN (35389) 16
Prefixes from unregistered ASNs in the Routing Table: 7
Unregistered ASNs in the Routing Table: 3
Prefixes from 32-bit ASNs in the Routing Table: 5
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 11
Number of addresses announced to Internet: 1749286624
Equivalent to 104 /8s, 67 /16s and 254 /24s
Percentage of available address space announced: 47.2
Percentage of allocated address space announced: 61.8
Percentage of available address space allocated: 76.4
Total number of prefixes smaller than registry allocations: 120398
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 53319
Total APNIC prefixes after maximum aggregation: 20728
APNIC Deaggregation factor: 2.57
Prefixes being announced from the APNIC address blocks: 50262
Unique aggregates announced from the APNIC address blocks: 22166
APNIC Region origin ASes present in the Internet Routing Table: 3032
APNIC Prefixes per ASN: 16.58
APNIC Region origin ASes announcing only one prefix: 823
APNIC Region transit ASes present in the Internet Routing Table: 463
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 311124640
Equivalent to 18 /8s, 139 /16s and 98 /24s
Percentage of available APNIC address space announced: 77.1
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911
APNIC Address Blocks 58/7, 60/7, 116/6, 120/6, 124/7, 126/8, 202/7
210/7, 218/7, 220/7 and 222/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 107807
Total ARIN prefixes after maximum aggregation: 62604
ARIN Deaggregation factor: 1.72
Prefixes being announced from the ARIN address blocks: 79394
Unique aggregates announced from the ARIN address blocks: 31837
ARIN Region origin ASes present in the Internet Routing Table: 11729
ARIN Prefixes per ASN: 6.77
ARIN Region origin ASes announcing only one prefix: 4522
ARIN Region transit ASes present in the Internet Routing Table: 1066
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 341879296
Equivalent to 20 /8s, 96 /16s and 170 /24s
Percentage of available ARIN address space announced: 75.5
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
ARIN Address Blocks 24/8, 63/8, 64/5, 72/6, 76/8, 96/6, 199/8, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 47982
Total RIPE prefixes after maximum aggregation: 30716
RIPE Deaggregation factor: 1.56
Prefixes being announced from the RIPE address blocks: 44336
Unique aggregates announced from the RIPE address blocks: 29127
RIPE Region origin ASes present in the Internet Routing Table: 10032
RIPE Prefixes per ASN: 4.42
RIPE Region origin ASes announcing only one prefix: 5354
RIPE Region transit ASes present in the Internet Routing Table: 1601
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 21
Number of RIPE addresses announced to Internet: 323725184
Equivalent to 19 /8s, 75 /16s and 167 /24s
Percentage of available RIPE address space announced: 74.2
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
40960-44031
RIPE Address Blocks 62/8, 77/8, 78/7, 80/4, 193/8, 194/7, 212/7
and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 16097
Total LACNIC prefixes after maximum aggregation: 4355
LACNIC Deaggregation factor: 3.70
Prefixes being announced from the LACNIC address blocks: 14174
Unique aggregates announced from the LACNIC address blocks: 7638
LACNIC Region origin ASes present in the Internet Routing Table: 842
LACNIC Prefixes per ASN: 16.83
LACNIC Region origin ASes announcing only one prefix: 274
LACNIC Region transit ASes present in the Internet Routing Table: 142
Average LACNIC Region AS path length visible: 4.1
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 41856256
Equivalent to 2 /8s, 126 /16s and 173 /24s
Percentage of available LACNIC address space announced: 62.4
LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks 189/8, 190/8, 200/7
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 2706
Total AfriNIC prefixes after maximum aggregation: 1042
AfriNIC Deaggregation factor: 2.60
Prefixes being announced from the AfriNIC address blocks: 2233
Unique aggregates announced from the AfriNIC address blocks: 1358
AfriNIC Region origin ASes present in the Internet Routing Table: 204
AfriNIC Prefixes per ASN: 10.95
AfriNIC Region origin ASes announcing only one prefix: 66
AfriNIC Region transit ASes present in the Internet Routing Table: 33
Average AfriNIC Region AS path length visible: 3.8
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 6394112
Equivalent to 0 /8s, 97 /16s and 145 /24s
Percentage of available AfriNIC address space announced: 19.1
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
4134 1329 11126 287 CHINANET-BACKBONE
4755 1319 382 71 Videsh Sanchar Nigam Ltd. Aut
9583 1122 80 401 Sify Limited
9498 994 532 69 BHARTI BT INTERNET LTD.
4766 798 5440 316 Korea Telecom (KIX)
23577 788 34 684 Korea Telecom (ATM-MPLS)
17488 742 48 59 Hathway IP Over Cable Interne
7545 702 150 116 TPG Internet Pty Ltd
18101 586 118 43 Reliance Infocom Ltd Internet
1221 547 1951 425 Telstra Pty Ltd
4812 536 915 95 China Telecom (Shanghai)
4668 512 68 10 LG-EDS Systems Inc.
17676 504 10935 65 Softbank BB Corp.
4808 476 768 107 CNCGROUP IP network: China169
9443 473 122 77 Primus Telecommunications
4802 419 112 152 Wantree Development
7474 398 217 271 SingTel Optus Pty Ltd
17974 361 130 13 PT TELEKOMUNIKASI INDONESIA
4837 354 4944 165 chinanet IDC center beijing n
9829 352 258 14 BSNL National Internet Backbo
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1472 6060 1000 AT&T WorldNet Services
4323 1328 1022 372 Time Warner Telecom
2386 1203 614 740 AT&T Data Communications Serv
11492 1118 108 34 Cable One
6478 1115 322 132 AT&T Worldnet Services
6197 1028 717 509 BellSouth Network Solutions,
18566 1019 288 9 Covad Communications
174 966 6777 856 Cogent Communications
701 939 6562 715 UUNET Technologies, Inc.
7011 905 259 544 Citizens Utilities
20115 807 742 431 Charter Communications
1239 803 2724 570 Sprint
19262 766 2721 185 Verizon Global Networks
22773 753 2148 49 Cox Communications, Inc.
209 744 3853 589 Qwest
5668 632 171 24 CenturyTel Internet Holdings,
6517 576 161 37 Yipes Communications, Inc.
852 575 1093 366 Telus Advanced Communications
855 575 254 73 Canadian Research Network
6198 569 613 259 BellSouth Network Solutions,
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
2119 515 1075 138 Telenor Internet Access
702 503 1922 404 UUNET - Commercial IP service
24863 362 57 41 LINKdotNET AS number
9116 348 168 26 Goldenlines main autonomous s
3301 313 1456 293 TeliaNet Sweden
3320 312 6035 258 Deutsche Telekom AG
6746 287 130 263 Dynamic Network Technologies,
5089 269 1658 54 NTL Group Limited
680 266 2061 257 DFN-IP service G-WiN
8220 261 446 244 COLT Telecommunications
8708 261 420 242 Romania Data Systems S.A.
3215 256 2392 97 France Telecom Transpac
8551 231 228 27 Bezeq International
3352 224 1864 41 Ibernet, Internet Access Netw
3269 221 2775 73 TELECOM ITALIA
9121 210 1441 24 TTnet Autonomous System
3292 195 1379 175 TDC Tele Danmark
1257 194 1195 172 SWIPnet Swedish IP Network
12479 193 578 6 Uni2 Autonomous System
3300 191 172 91 AUCS Communications Services
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 915 1957 209 UniNet S.A. de C.V.
11830 483 299 9 Instituto Costarricense de El
16814 426 26 9 NSS, S.A.
11172 374 115 61 Servicios Alestra S.A de C.V
7303 335 174 41 Telecom Argentina Stet-France
14522 334 28 7 SatNet S.A.
22047 318 246 13 VTR PUNTO NET S.A.
6471 316 75 32 ENTEL CHILE S.A.
14117 281 19 15 Telefonica del Sur S.A.
10481 261 104 9 Prima S.A.
11556 229 128 3 Cable-Wireless Panama
6147 226 176 27 Telefonica Del Peru
10620 217 61 26 TVCABLE BOGOTA
6503 201 171 83 AVANTEL, S.A.
23216 195 16 43 RAMtelecom Telecomunicaciones
8163 177 11 6 METROTEL REDES S.A.
19169 170 15 20 Telconet
20299 163 24 21 NEWCOM AMERICAS
21826 162 28 61 INTERCABLE
7738 159 506 23 Telecomunicacoes da Bahia S.A
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 282 867 223 The Internet Solution
8452 229 188 7 TEDATA
6713 142 135 11 Itissalat Al-MAGHRIB
2018 141 301 115 Tertiary Education Network
33783 126 8 11 EEPAD TISP TELECOM & INTERNET
5536 124 8 10 Internet Egypt Network
33776 99 6 8 Starcomms Nigeria Limited
24835 87 48 6 RAYA Telecom - Egypt
15475 78 84 4 Nile Online
2905 75 174 72 The Internetworking Company o
2561 62 6 2 Egyptian Universities Network
15706 56 12 4 Sudatel Internet Exchange Aut
23889 52 24 15 MAURITIUS TELECOM
5713 46 294 36 Telkom SA Ltd
33774 46 29 24 AS Number for Telecom Algeria
16637 42 21 29 Johnnic e-Ventures
8524 31 2 10 AUCEGYPT Autonomous System
12455 30 6 3 Jambonet Autonomous system
21280 30 4 4 Swift Global Kenya Ltd.Is an
10798 24 2 15 Standard Bank of South Africa
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4755 1319 1248 Videsh Sanchar Nigam Ltd. Aut
11492 1118 1084 Cable One
4134 1329 1042 CHINANET-BACKBONE
18566 1019 1010 Covad Communications
6478 1115 983 AT&T Worldnet Services
4323 1328 956 Time Warner Telecom
9498 994 925 BHARTI BT INTERNET LTD.
9583 1122 721 Sify Limited
8151 915 706 UniNet S.A. de C.V.
22773 753 704 Cox Communications, Inc.
17488 742 683 Hathway IP Over Cable Interne
5668 632 608 CenturyTel Internet Holdings,
7545 702 586 TPG Internet Pty Ltd
19262 766 581 Verizon Global Networks
18101 586 543 Reliance Infocom Ltd Internet
6517 576 539 Yipes Communications, Inc.
15270 568 530 PaeTec.net -a division of Pae
6197 1028 519 BellSouth Network Solutions,
19916 568 517 OLM LLC
855 575 502 Canadian Research Network
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
64513 PRIVATE 63.171.234.0/26 1803 SPRINT
64513 PRIVATE 63.171.234.64/26 1803 SPRINT
64513 PRIVATE 63.171.234.128/26 1803 SPRINT
64513 PRIVATE 63.171.234.192/26 1803 SPRINT
38347 UNALLOCATED 116.212.160.0/21 9389 BEIJING SHENZHOU GRE
38347 UNALLOCATED 116.212.168.0/21 9389 BEIJING SHENZHOU GRE
24410 UNALLOCATED 203.119.28.0/24 4134 CHINANET-BACKBONE
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
7.1.1.0/24 1239 Sprint
132.0.0.0/10 721 DLA Systems Automation Center
137.0.0.0/13 721 DLA Systems Automation Center
158.0.0.0/13 721 DLA Systems Automation Center
172.33.1.0/24 7018 AT&T WorldNet Services
192.0.10.0/24 9498 BHARTI BT INTERNET LTD.
192.44.0.0/24 5501 Fraunhofer Gesellschaft
192.44.0.0/19 702 UUNET - Commercial IP service
192.70.164.0/24 25689 National Research Council of
192.153.136.0/21 721 DLA Systems Automation Center
192.172.0.0/19 721 DLA Systems Automation Center
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:18 /9:9 /10:15 /11:36 /12:133
/13:257 /14:471 /15:911 /16:9575 /17:4044 /18:6527
/19:13870 /20:16116 /21:14700 /22:19060 /23:19983 /24:119794
/25:775 /26:1029 /27:504 /28:81 /29:5 /30:0
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6478 1114 1115 AT&T Worldnet Services
11492 1110 1118 Cable One
18566 1001 1019 Covad Communications
9583 964 1122 Sify Limited
2386 897 1203 AT&T Data Communications Serv
7018 809 1472 AT&T WorldNet Services
7011 803 905 Citizens Utilities
6197 782 1028 BellSouth Network Solutions,
23577 779 788 Korea Telecom (ATM-MPLS)
4755 708 1319 Videsh Sanchar Nigam Ltd. Aut
9498 663 994 BHARTI BT INTERNET LTD.
4766 595 798 Korea Telecom (KIX)
17488 565 742 Hathway IP Over Cable Interne
19916 563 568 OLM LLC
4323 559 1328 Time Warner Telecom
6517 541 576 Yipes Communications, Inc.
15270 532 568 PaeTec.net -a division of Pae
4668 502 512 LG-EDS Systems Inc.
5668 497 632 CenturyTel Internet Holdings,
18101 496 586 Reliance Infocom Ltd Internet
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:8 7:1 8:85 12:1798 15:19 16:3
17:3 18:12 20:37 24:935 25:1 32:57
33:3 38:346 40:60 41:297 44:2 47:4
52:4 55:3 56:3 57:25 58:469 59:389
60:343 61:991 62:928 63:1990 64:3139 65:2338
66:3314 67:753 68:623 69:1937 70:444 71:104
72:1380 73:2 74:614 75:255 76:98 77:277
78:32 80:830 81:827 82:664 83:371 84:574
85:852 86:336 87:478 88:276 89:951 90:22
91:461 97:6 116:271 117:124 121:258 122:572
123:151 124:841 125:980 128:291 129:206 130:140
131:359 132:55 133:9 134:199 135:34 136:188
137:79 138:149 139:71 140:494 141:172 142:378
143:254 144:300 145:46 146:324 147:120 148:409
149:142 150:111 151:158 152:90 153:122 154:3
155:260 156:156 157:212 158:157 159:171 160:107
161:94 162:185 163:179 164:468 165:393 166:271
167:295 168:487 169:120 170:412 171:22 172:2
189:71 190:900 192:5738 193:3959 194:3167 195:2273
196:973 198:3802 199:3265 200:5061 201:1147 202:7403
203:7571 204:3935 205:1979 206:2418 207:2814 208:2767
209:3514 210:2421 211:971 212:1317 213:1450 214:416
215:41 216:3978 217:1156 218:351 219:383 220:1008
221:412 222:268
End of report
