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From: Routing Analysis Role Account (no email)
Date: Fri Dec 14 2007 - 13:02:39 EST
This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
Daily listings are sent to
For historical data, please see http://thyme.apnic.net.
If you have any comments please contact Philip Smith <>.
Routing Table Report 04:00 +10GMT Sat 15 Dec, 2007
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 240735
Prefixes after maximum aggregation: 123500
Deaggregation factor: 1.95
Unique aggregates announced to Internet: 117441
Total ASes present in the Internet Routing Table: 26879
Prefixes per ASN: 8.96
Origin-only ASes present in the Internet Routing Table: 23383
Origin ASes announcing only one prefix: 11388
Transit ASes present in the Internet Routing Table: 3496
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: 20
Max AS path prepend of ASN (35389) 17
Prefixes from unregistered ASNs in the Routing Table: 8
Unregistered ASNs in the Routing Table: 5
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: 14
Number of addresses announced to Internet: 1796808672
Equivalent to 107 /8s, 25 /16s and 31 /24s
Percentage of available address space announced: 48.5
Percentage of allocated address space announced: 62.0
Percentage of available address space allocated: 78.2
Total number of prefixes smaller than registry allocations: 112821
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 56050
Total APNIC prefixes after maximum aggregation: 21429
APNIC Deaggregation factor: 2.62
Prefixes being announced from the APNIC address blocks: 52923
Unique aggregates announced from the APNIC address blocks: 23480
APNIC Region origin ASes present in the Internet Routing Table: 3108
APNIC Prefixes per ASN: 17.03
APNIC Region origin ASes announcing only one prefix: 815
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: 17
Number of APNIC addresses announced to Internet: 323392416
Equivalent to 19 /8s, 70 /16s and 147 /24s
Percentage of available APNIC address space announced: 74.0
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: 112613
Total ARIN prefixes after maximum aggregation: 63992
ARIN Deaggregation factor: 1.76
Prefixes being announced from the ARIN address blocks: 83054
Unique aggregates announced from the ARIN address blocks: 33134
ARIN Region origin ASes present in the Internet Routing Table: 11981
ARIN Prefixes per ASN: 6.93
ARIN Region origin ASes announcing only one prefix: 4602
ARIN Region transit ASes present in the Internet Routing Table: 1137
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 15
Number of ARIN addresses announced to Internet: 355260288
Equivalent to 21 /8s, 44 /16s and 215 /24s
Percentage of available ARIN address space announced: 78.4
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: 50670
Total RIPE prefixes after maximum aggregation: 32386
RIPE Deaggregation factor: 1.56
Prefixes being announced from the RIPE address blocks: 47531
Unique aggregates announced from the RIPE address blocks: 31359
RIPE Region origin ASes present in the Internet Routing Table: 10616
RIPE Prefixes per ASN: 4.48
RIPE Region origin ASes announcing only one prefix: 5617
RIPE Region transit ASes present in the Internet Routing Table: 1650
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 339078912
Equivalent to 20 /8s, 53 /16s and 239 /24s
Percentage of available RIPE address space announced: 77.7
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, 78/7, 80/4, 193/8, 194/7, 212/7
and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 18092
Total LACNIC prefixes after maximum aggregation: 4588
LACNIC Deaggregation factor: 3.94
Prefixes being announced from the LACNIC address blocks: 16072
Unique aggregates announced from the LACNIC address blocks: 8927
LACNIC Region origin ASes present in the Internet Routing Table: 888
LACNIC Prefixes per ASN: 18.10
LACNIC Region origin ASes announcing only one prefix: 289
LACNIC Region transit ASes present in the Internet Routing Table: 153
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 47070208
Equivalent to 2 /8s, 206 /16s and 60 /24s
Percentage of available LACNIC address space announced: 46.8
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: 3293
Total AfriNIC prefixes after maximum aggregation: 1089
AfriNIC Deaggregation factor: 3.02
Prefixes being announced from the AfriNIC address blocks: 2465
Unique aggregates announced from the AfriNIC address blocks: 1451
AfriNIC Region origin ASes present in the Internet Routing Table: 211
AfriNIC Prefixes per ASN: 11.68
AfriNIC Region origin ASes announcing only one prefix: 65
AfriNIC Region transit ASes present in the Internet Routing Table: 38
Average AfriNIC Region AS path length visible: 3.6
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 8242944
Equivalent to 0 /8s, 125 /16s and 199 /24s
Percentage of available AfriNIC address space announced: 24.6
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 1494 383 71 Videsh Sanchar Nigam Ltd. Aut
9583 1094 81 431 Sify Limited
9498 1056 549 63 BHARTI BT INTERNET LTD.
4134 977 11601 305 CHINANET-BACKBONE
17488 918 59 80 Hathway IP Over Cable Interne
4766 818 5475 330 Korea Telecom (KIX)
23577 802 34 685 Korea Telecom (ATM-MPLS)
7545 660 148 107 TPG Internet Pty Ltd
18101 610 120 57 Reliance Infocom Ltd Internet
9829 598 448 10 BSNL National Internet Backbo
1221 545 1952 421 Telstra Pty Ltd
4812 529 874 82 China Telecom (Shanghai)
4808 522 798 121 CNCGROUP IP network: China169
4668 519 68 10 LG-EDS Systems Inc.
17676 504 10919 64 Softbank BB Corp.
4802 470 128 149 Wantree Development
9443 439 121 69 Primus Telecommunications
17974 408 145 17 PT TELEKOMUNIKASI INDONESIA
7474 385 202 271 SingTel Optus Pty Ltd
4837 362 5072 176 chinanet IDC center beijing n
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1489 6106 1009 AT&T WorldNet Services
4323 1386 1015 366 Time Warner Telecom
2386 1316 635 795 AT&T Data Communications Serv
11492 1186 125 36 Cable One
6478 1084 328 178 AT&T Worldnet Services
18566 1034 288 9 Covad Communications
6197 1032 721 510 BellSouth Network Solutions,
7011 996 295 582 Citizens Utilities
174 971 6823 822 Cogent Communications
701 893 6546 699 UUNET Technologies, Inc.
19262 858 3102 173 Verizon Global Networks
20115 843 773 455 Charter Communications
3356 837 10904 414 Level 3 Communications, LLC
22773 831 2138 58 Cox Communications, Inc.
1239 790 2673 549 Sprint
209 742 3786 583 Qwest
5668 665 176 18 CenturyTel Internet Holdings,
6517 615 163 34 Yipes Communications, Inc.
15270 588 160 48 PaeTec.net -a division of Pae
852 585 1126 358 Telus Advanced Communications
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 466 1917 379 UUNET - Commercial IP service
3292 406 1653 366 TDC Tele Danmark
9116 335 184 28 Goldenlines main autonomous s
3301 322 1458 296 TeliaNet Sweden
3320 315 6019 261 Deutsche Telekom AG
8452 284 188 7 TEDATA
8866 280 78 24 Bulgarian Telecommunication C
8551 276 266 40 Bezeq International
6746 273 129 252 Dynamic Network Technologies,
8708 272 421 244 Romania Data Systems S.A.
3215 270 2583 92 France Telecom Transpac
680 268 2045 254 DFN-IP service G-WiN
9155 254 43 11 QualityNet AS number
8220 242 423 228 COLT Telecommunications
3352 238 1948 40 Ibernet, Internet Access Netw
3269 230 3037 68 TELECOM ITALIA
5462 229 666 27 Telewest Broadband
3300 214 220 102 AUCS Communications Services
9121 213 1444 26 TTnet Autonomous System
1257 195 1195 178 SWIPnet Swedish IP Network
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 1157 2408 216 UniNet S.A. de C.V.
11830 539 299 9 Instituto Costarricense de El
16814 427 27 10 NSS, S.A.
7303 417 202 59 Telecom Argentina Stet-France
11172 379 115 62 Servicios Alestra S.A de C.V
14522 371 34 8 SatNet S.A.
6471 363 85 37 ENTEL CHILE S.A.
22047 322 254 13 VTR PUNTO NET S.A.
10481 301 120 10 Prima S.A.
10620 293 80 20 TVCABLE BOGOTA
14117 286 19 15 Telefonica del Sur S.A.
6147 256 214 21 Telefonica Del Peru
7738 237 602 25 Telecomunicacoes da Bahia S.A
11556 235 128 3 Cable-Wireless Panama
23216 223 17 47 RAMtelecom Telecomunicaciones
20299 221 33 29 NEWCOM AMERICAS
6503 220 187 86 AVANTEL, S.A.
28573 219 321 29 NET Servicos de Comunicao S.A
19169 190 12 20 Telconet
21826 187 33 48 INTERCABLE
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
24863 400 60 36 LINKdotNET AS number
3741 278 869 226 The Internet Solution
20858 201 34 3 EgyNet
6713 145 135 11 Itissalat Al-MAGHRIB
2018 143 268 115 Tertiary Education Network
5536 124 8 10 Internet Egypt Network
33783 124 8 15 EEPAD TISP TELECOM & INTERNET
33776 100 6 3 Starcomms Nigeria Limited
24835 88 48 6 RAYA Telecom - Egypt
15475 84 84 4 Nile Online
23889 79 24 16 MAURITIUS TELECOM
2905 77 174 73 The Internetworking Company o
29571 77 13 7 Ci Telecom Autonomous system
20484 65 5 6 Yalla Online Autonomous Syste
15706 57 12 4 Sudatel Internet Exchange Aut
33774 51 37 28 AS Number for Telecom Algeria
5713 49 455 39 Telkom SA Ltd
8524 32 2 10 AUCEGYPT Autonomous System
12455 32 6 3 Jambonet 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 1186 1150 Cable One
18566 1034 1025 Covad Communications
4323 1386 1020 Time Warner Telecom
9498 1056 993 BHARTI BT INTERNET LTD.
8151 1157 941 UniNet S.A. de C.V.
6478 1084 906 AT&T Worldnet Services
17488 918 838 Hathway IP Over Cable Interne
22773 831 773 Cox Communications, Inc.
19262 858 685 Verizon Global Networks
4134 977 672 CHINANET-BACKBONE
9583 1094 663 Sify Limited
5668 665 647 CenturyTel Internet Holdings,
9829 598 588 BSNL National Internet Backbo
6517 615 581 Yipes Communications, Inc.
7545 660 553 TPG Internet Pty Ltd
18101 610 553 Reliance Infocom Ltd Internet
15270 588 540 PaeTec.net -a division of Pae
11830 539 530 Instituto Costarricense de El
6197 1032 522 BellSouth Network Solutions,
19916 569 522 OLM LLC
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
65000 PRIVATE 78.108.160.0/24 39010 TerraNet sal
65068 PRIVATE 79.171.184.0/21 43895 *
65201 PRIVATE 202.112.45.0/24 4538 China Education and
65201 PRIVATE 202.112.49.0/24 4538 China Education and
65201 PRIVATE 202.112.50.0/24 4538 China Education and
65201 PRIVATE 202.112.54.0/24 4538 China Education and
65201 PRIVATE 202.112.57.0/24 4538 China Education and
65201 PRIVATE 202.112.58.0/24 4538 China Education and
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
172.14.254.0/24 20312 CNTI-REACCIUN "Centro Naciona
172.15.254.0/24 20312 CNTI-REACCIUN "Centro Naciona
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 /12:135
/13:271 /14:487 /15:962 /16:9745 /17:4184 /18:6860
/19:14868 /20:16967 /21:16053 /22:20148 /23:21122 /24:126325
/25:832 /26:1033 /27:551 /28:96 /29:5 /30:0
/31:0 /32:9
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1177 1186 Cable One
6478 1083 1084 AT&T Worldnet Services
18566 1016 1034 Covad Communications
2386 1007 1316 AT&T Data Communications Serv
9583 939 1094 Sify Limited
7011 881 996 Citizens Utilities
4755 860 1494 Videsh Sanchar Nigam Ltd. Aut
7018 818 1489 AT&T WorldNet Services
23577 793 802 Korea Telecom (ATM-MPLS)
6197 774 1032 BellSouth Network Solutions,
9498 742 1056 BHARTI BT INTERNET LTD.
17488 733 918 Hathway IP Over Cable Interne
4766 605 818 Korea Telecom (KIX)
4323 591 1386 Time Warner Telecom
6517 570 615 Yipes Communications, Inc.
19916 564 569 OLM LLC
15270 551 588 PaeTec.net -a division of Pae
5668 524 665 CenturyTel Internet Holdings,
4668 509 519 LG-EDS Systems Inc.
18101 504 610 Reliance Infocom Ltd Internet
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:9 8:92 12:1897 13:2 15:21 16:3
17:6 18:14 20:35 24:1016 25:1 31:1
32:61 33:4 38:368 40:69 41:422 44:2
47:8 52:3 55:3 56:3 57:21 58:498
59:412 60:389 61:984 62:1062 63:1980 64:3305
65:2364 66:3611 67:997 68:645 69:2105 70:466
71:106 72:1454 73:7 74:795 75:263 76:163
77:495 78:384 79:46 80:903 81:787 82:565
83:368 84:609 85:827 86:366 87:611 88:290
89:1058 90:39 91:867 92:45 96:2 97:7
98:21 114:1 115:1 116:475 117:222 118:54
119:4 121:365 122:656 123:229 124:755 125:1059
128:309 129:181 130:136 131:375 132:68 133:9
134:194 135:33 136:195 137:82 138:148 139:72
140:513 141:127 142:374 143:263 144:332 145:51
146:330 147:128 148:483 149:185 150:171 151:124
152:101 153:122 154:11 155:277 156:199 157:226
158:165 159:206 160:189 161:100 162:197 163:186
164:560 165:410 166:288 167:311 168:550 169:128
170:421 171:29 172:5 173:1 189:122 190:1298
192:5729 193:4052 194:3221 195:2328 196:938 198:3812
199:3227 200:5214 201:1287 202:7481 203:7852 204:3964
205:2024 206:2420 207:2759 208:3027 209:3544 210:2516
211:1112 212:1251 213:1597 214:433 215:42 216:4082
217:1210 218:331 219:403 220:1009 221:406 222:291
End of report
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