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[bgp-stats] Routing Table Report - Japan view
Routing Table Report 04:00 +10GMT Wed 23 Jan, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 243194
Prefixes after maximum aggregation: 124370
Deaggregation factor: 1.96
Unique aggregates announced to Internet: 118757
Total ASes present in the Internet Routing Table: 27131
Prefixes per ASN: 8.96
Origin-only ASes present in the Internet Routing Table: 23651
Origin ASes announcing only one prefix: 11487
Transit ASes present in the Internet Routing Table: 3480
Transit-only ASes present in the Internet Routing Table: 70
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 18
Max AS path prepend of ASN (29642) 15
Prefixes from unregistered ASNs in the Routing Table: 12
Unregistered ASNs in the Routing Table: 12
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: 12
Number of addresses announced to Internet: 1802572832
Equivalent to 107 /8s, 113 /16s and 20 /24s
Percentage of available address space announced: 48.6
Percentage of allocated address space announced: 62.2
Percentage of available address space allocated: 78.2
Total number of prefixes smaller than registry allocations: 114531
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 55819
Total APNIC prefixes after maximum aggregation: 21047
APNIC Deaggregation factor: 2.65
Prefixes being announced from the APNIC address blocks: 53317
Unique aggregates announced from the APNIC address blocks: 23820
APNIC Region origin ASes present in the Internet Routing Table: 3103
APNIC Prefixes per ASN: 17.18
APNIC Region origin ASes announcing only one prefix: 809
APNIC Region transit ASes present in the Internet Routing Table: 458
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 324759456
Equivalent to 19 /8s, 91 /16s and 111 /24s
Percentage of available APNIC address space announced: 74.3
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, 114/7, 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: 114737
Total ARIN prefixes after maximum aggregation: 65330
ARIN Deaggregation factor: 1.76
Prefixes being announced from the ARIN address blocks: 83687
Unique aggregates announced from the ARIN address blocks: 33351
ARIN Region origin ASes present in the Internet Routing Table: 12090
ARIN Prefixes per ASN: 6.92
ARIN Region origin ASes announcing only one prefix: 4663
ARIN Region transit ASes present in the Internet Routing Table: 1150
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 15
Number of ARIN addresses announced to Internet: 357838784
Equivalent to 21 /8s, 84 /16s and 47 /24s
Percentage of available ARIN address space announced: 79.0
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: 50862
Total RIPE prefixes after maximum aggregation: 32249
RIPE Deaggregation factor: 1.58
Prefixes being announced from the RIPE address blocks: 48167
Unique aggregates announced from the RIPE address blocks: 31920
RIPE Region origin ASes present in the Internet Routing Table: 10756
RIPE Prefixes per ASN: 4.48
RIPE Region origin ASes announcing only one prefix: 5661
RIPE Region transit ASes present in the Internet Routing Table: 1646
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 340643584
Equivalent to 20 /8s, 77 /16s and 207 /24s
Percentage of available RIPE address space announced: 78.1
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
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: 18378
Total LACNIC prefixes after maximum aggregation: 4622
LACNIC Deaggregation factor: 3.98
Prefixes being announced from the LACNIC address blocks: 16555
Unique aggregates announced from the LACNIC address blocks: 9032
LACNIC Region origin ASes present in the Internet Routing Table: 893
LACNIC Prefixes per ASN: 18.54
LACNIC Region origin ASes announcing only one prefix: 286
LACNIC Region transit ASes present in the Internet Routing Table: 150
Average LACNIC Region AS path length visible: 3.9
Max LACNIC Region AS path length visible: 17
Number of LACNIC addresses announced to Internet: 47274752
Equivalent to 2 /8s, 209 /16s and 91 /24s
Percentage of available LACNIC address space announced: 47.0
LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks 186/7, 189/8, 190/8, 200/7
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 3382
Total AfriNIC prefixes after maximum aggregation: 1104
AfriNIC Deaggregation factor: 3.06
Prefixes being announced from the AfriNIC address blocks: 2539
Unique aggregates announced from the AfriNIC address blocks: 1458
AfriNIC Region origin ASes present in the Internet Routing Table: 218
AfriNIC Prefixes per ASN: 11.65
AfriNIC Region origin ASes announcing only one prefix: 68
AfriNIC Region transit ASes present in the Internet Routing Table: 39
Average AfriNIC Region AS path length visible: 3.6
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 8219904
Equivalent to 0 /8s, 125 /16s and 109 /24s
Percentage of available AfriNIC address space announced: 24.5
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 1549 384 75 Videsh Sanchar Nigam Ltd. Aut
9583 1120 82 437 Sify Limited
9498 1106 549 61 BHARTI BT INTERNET LTD.
17488 960 62 87 Hathway IP Over Cable Interne
4134 862 11761 310 CHINANET-BACKBONE
4766 841 5494 340 Korea Telecom (KIX)
23577 816 34 695 Korea Telecom (ATM-MPLS)
18101 609 128 65 Reliance Infocom Ltd Internet
4780 596 309 46 Digital United Inc.
9829 592 449 11 BSNL National Internet Backbo
1221 546 1952 421 Telstra Pty Ltd
4812 531 934 86 China Telecom (Shanghai)
4808 530 821 125 CNCGROUP IP network: China169
4668 523 68 10 LG-EDS Systems Inc.
17676 506 10919 64 Softbank BB Corp.
7545 493 147 94 TPG Internet Pty Ltd
4802 470 128 151 Wantree Development
9443 437 121 71 Primus Telecommunications
17974 400 145 17 PT TELEKOMUNIKASI INDONESIA
7474 385 202 271 SingTel Optus Pty Ltd
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1464 6073 991 AT&T WorldNet Services
4323 1390 1011 364 Time Warner Telecom
2386 1355 636 833 AT&T Data Communications Serv
11492 1210 135 17 Cable One
6478 1100 331 121 AT&T Worldnet Services
18566 1040 296 10 Covad Communications
7011 1028 299 590 Citizens Utilities
6197 970 713 503 BellSouth Network Solutions,
174 969 6834 811 Cogent Communications
701 897 6559 690 UUNET Technologies, Inc.
19262 875 3221 147 Verizon Global Networks
20115 864 795 470 Charter Communications
22773 843 2139 58 Cox Communications, Inc.
3356 839 10910 413 Level 3 Communications, LLC
1239 793 2672 551 Sprint
209 745 3910 597 Qwest
5668 668 177 21 CenturyTel Internet Holdings,
6517 611 150 41 Yipes Communications, Inc.
6140 606 110 154 ImpSat
15270 606 161 50 PaeTec.net -a division of Pae
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3292 385 1648 350 TDC Tele Danmark
3301 328 1458 299 TeliaNet Sweden
3320 317 6019 263 Deutsche Telekom AG
8452 295 188 7 TEDATA
8866 280 78 24 Bulgarian Telecommunication C
8551 278 267 41 Bezeq International
8708 273 420 241 Romania Data Systems S.A.
680 271 2046 256 DFN-IP service G-WiN
3215 270 2583 92 France Telecom Transpac
6746 263 128 242 Dynamic Network Technologies,
8220 251 422 227 COLT Telecommunications
3352 241 1948 40 Ibernet, Internet Access Netw
3269 233 3085 70 TELECOM ITALIA
5462 229 666 27 Telewest Broadband
9155 215 45 10 QualityNet AS number
3300 211 172 100 AUCS Communications Services
9121 208 1444 25 TTnet Autonomous System
1257 199 1196 182 SWIPnet Swedish IP Network
29357 199 17 4 WATANIYA TELECOM
2856 195 2307 162 BTnet UK Regional network
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 1150 2390 218 UniNet S.A. de C.V.
11830 547 299 9 Instituto Costarricense de El
16814 427 27 10 NSS, S.A.
7303 425 207 53 Telecom Argentina Stet-France
11172 396 115 62 Servicios Alestra S.A de C.V
6471 385 85 39 ENTEL CHILE S.A.
10620 351 92 25 TVCABLE BOGOTA
14117 351 23 16 Telefonica del Sur S.A.
22047 322 254 13 VTR PUNTO NET S.A.
10481 301 120 10 Prima S.A.
6147 256 214 21 Telefonica Del Peru
7738 241 602 25 Telecomunicacoes da Bahia S.A
11556 238 128 5 Cable-Wireless Panama
23216 231 17 49 RAMtelecom Telecomunicaciones
20299 230 33 29 NEWCOM AMERICAS
28573 229 322 24 NET Servicos de Comunicao S.A
6503 220 180 85 AVANTEL, S.A.
10834 193 76 40 ADVANCE TELECOMUNICACIONES S.
19169 191 12 20 Telconet
21826 187 33 48 INTERCABLE
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
24863 412 60 31 LINKdotNET AS number
3741 279 869 225 The Internet Solution
20858 202 34 3 EgyNet
6713 145 135 11 Itissalat Al-MAGHRIB
2018 142 268 114 Tertiary Education Network
33783 129 9 15 EEPAD TISP TELECOM & INTERNET
5536 124 8 10 Internet Egypt Network
33776 99 6 7 Starcomms Nigeria Limited
15475 90 84 4 Nile Online
24835 88 48 6 RAYA Telecom - Egypt
23889 78 24 16 MAURITIUS TELECOM
29571 77 13 7 Ci Telecom Autonomous system
2905 76 174 73 The Internetworking Company o
20484 71 5 4 Yalla Online Autonomous Syste
15706 58 12 4 Sudatel Internet Exchange Aut
5713 51 455 41 Telkom SA Ltd
33774 51 37 28 AS Number for Telecom Algeria
16637 47 21 28 Johnnic e-Ventures
8524 33 2 8 AUCEGYPT Autonomous System
21152 32 2 1 AS for the uplinks of Soficom
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
11492 1210 1193 Cable One
9498 1106 1045 BHARTI BT INTERNET LTD.
18566 1040 1030 Covad Communications
4323 1390 1026 Time Warner Telecom
6478 1100 979 AT&T Worldnet Services
8151 1150 932 UniNet S.A. de C.V.
17488 960 873 Hathway IP Over Cable Interne
22773 843 785 Cox Communications, Inc.
19262 875 728 Verizon Global Networks
9583 1120 683 Sify Limited
5668 668 647 CenturyTel Internet Holdings,
9829 592 581 BSNL National Internet Backbo
6517 611 570 Yipes Communications, Inc.
15270 606 556 PaeTec.net -a division of Pae
4134 862 552 CHINANET-BACKBONE
4780 596 550 Digital United Inc.
18101 609 544 Reliance Infocom Ltd Internet
11830 547 538 Instituto Costarricense de El
2386 1355 522 AT&T Data Communications Serv
19916 563 521 OLM LLC
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
33526 UNALLOCATED 64.128.26.0/24 4323 Time Warner Telecom
21624 UNALLOCATED 65.163.176.0/24 701 UUNET Technologies,
64555 PRIVATE 122.144.27.0/24 38082 True International G
65364 PRIVATE 190.144.163.0/24 14080 FIRSTCOM COLOMBIA
65389 PRIVATE 190.144.166.0/24 14080 FIRSTCOM COLOMBIA
65394 PRIVATE 190.144.167.0/24 14080 FIRSTCOM COLOMBIA
65403 PRIVATE 190.144.168.0/24 14080 FIRSTCOM COLOMBIA
65375 PRIVATE 190.144.175.0/24 14080 FIRSTCOM COLOMBIA
21624 UNALLOCATED 208.246.136.0/24 701 UUNET Technologies,
21624 UNALLOCATED 208.248.233.0/24 701 UUNET Technologies,
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
31.31.31.0/24 9730 The Best ISP to go Multimedia
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
173.173.173.0/24 9730 The Best ISP to go Multimedia
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 /11:40 /12:137
/13:273 /14:489 /15:972 /16:9740 /17:4216 /18:6947
/19:14908 /20:17074 /21:16201 /22:20408 /23:21403 /24:127708
/25:874 /26:1096 /27:555 /28:93 /29:9 /30:1
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1200 1210 Cable One
6478 1099 1100 AT&T Worldnet Services
2386 1054 1355 AT&T Data Communications Serv
18566 1021 1040 Covad Communications
9583 965 1120 Sify Limited
7011 913 1028 Citizens Utilities
4755 909 1549 Videsh Sanchar Nigam Ltd. Aut
23577 807 816 Korea Telecom (ATM-MPLS)
7018 803 1464 AT&T WorldNet Services
9498 777 1106 BHARTI BT INTERNET LTD.
17488 775 960 Hathway IP Over Cable Interne
6197 729 970 BellSouth Network Solutions,
4766 624 841 Korea Telecom (KIX)
4323 593 1390 Time Warner Telecom
6517 574 611 Yipes Communications, Inc.
15270 564 606 PaeTec.net -a division of Pae
19916 558 563 OLM LLC
5668 524 668 CenturyTel Internet Holdings,
4668 513 523 LG-EDS Systems Inc.
18101 496 609 Reliance Infocom Ltd Internet
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:9 8:97 12:1946 13:2 15:21 16:3
17:6 18:14 20:35 24:1012 25:1 31:1
32:61 33:4 38:384 40:65 41:459 44:2
47:8 52:3 55:3 56:3 57:22 58:509
59:417 60:407 61:986 62:1024 63:1975 64:3340
65:2379 66:3615 67:1062 68:633 69:2089 70:472
71:102 72:1460 73:7 74:792 75:170 76:185
77:478 78:451 79:70 80:883 81:791 82:578
83:346 84:524 85:948 86:368 87:606 88:292
89:1084 90:42 91:929 92:68 93:18 96:3
97:7 98:32 114:1 115:1 116:488 117:243
118:61 119:83 121:409 122:664 123:257 124:776
125:1068 128:309 129:199 130:125 131:392 132:68
133:9 134:188 135:31 136:215 137:97 138:156
139:80 140:496 141:106 142:378 143:267 144:324
145:51 146:331 147:130 148:482 149:188 150:116
151:132 152:95 153:128 154:11 155:282 156:198
157:249 158:164 159:212 160:213 161:96 162:199
163:185 164:561 165:419 166:291 167:308 168:574
169:132 170:429 171:28 172:3 173:1 189:143
190:1315 192:5756 193:4071 194:3243 195:2316 196:964
198:3797 199:3203 200:5404 201:1287 202:7496 203:7903
204:3966 205:2072 206:2431 207:2749 208:3103 209:3623
210:2626 211:1031 212:1298 213:1591 214:450 215:46
216:4132 217:1236 218:334 219:405 220:1003 221:412
222:300
End of report
