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From: Routing Analysis Role Account (no email)
Date: Fri Dec 07 2007 - 13:03:28 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 08 Dec, 2007
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 239737
Prefixes after maximum aggregation: 123346
Deaggregation factor: 1.94
Unique aggregates announced to Internet: 117087
Total ASes present in the Internet Routing Table: 26839
Prefixes per ASN: 8.93
Origin-only ASes present in the Internet Routing Table: 23354
Origin ASes announcing only one prefix: 11384
Transit ASes present in the Internet Routing Table: 3485
Transit-only ASes present in the Internet Routing Table: 73
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 24
Max AS path prepend of ASN (13227) 16
Prefixes from unregistered ASNs in the Routing Table: 2
Unregistered ASNs in the Routing Table: 6
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: 1794930272
Equivalent to 106 /8s, 252 /16s and 118 /24s
Percentage of available address space announced: 48.4
Percentage of allocated address space announced: 61.9
Percentage of available address space allocated: 78.2
Total number of prefixes smaller than registry allocations: 112253
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 55725
Total APNIC prefixes after maximum aggregation: 21333
APNIC Deaggregation factor: 2.61
Prefixes being announced from the APNIC address blocks: 52608
Unique aggregates announced from the APNIC address blocks: 23404
APNIC Region origin ASes present in the Internet Routing Table: 3091
APNIC Prefixes per ASN: 17.02
APNIC Region origin ASes announcing only one prefix: 815
APNIC Region transit ASes present in the Internet Routing Table: 475
Average APNIC Region AS path length visible: 3.7
Max APNIC Region AS path length visible: 17
Number of APNIC addresses announced to Internet: 322888864
Equivalent to 19 /8s, 62 /16s and 228 /24s
Percentage of available APNIC address space announced: 73.8
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: 112183
Total ARIN prefixes after maximum aggregation: 63984
ARIN Deaggregation factor: 1.75
Prefixes being announced from the ARIN address blocks: 82732
Unique aggregates announced from the ARIN address blocks: 32990
ARIN Region origin ASes present in the Internet Routing Table: 11979
ARIN Prefixes per ASN: 6.91
ARIN Region origin ASes announcing only one prefix: 4605
ARIN Region transit ASes present in the Internet Routing Table: 1130
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 22
Number of ARIN addresses announced to Internet: 354750848
Equivalent to 21 /8s, 37 /16s and 17 /24s
Percentage of available ARIN address space announced: 78.3
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: 50536
Total RIPE prefixes after maximum aggregation: 32337
RIPE Deaggregation factor: 1.56
Prefixes being announced from the RIPE address blocks: 47362
Unique aggregates announced from the RIPE address blocks: 31266
RIPE Region origin ASes present in the Internet Routing Table: 10598
RIPE Prefixes per ASN: 4.47
RIPE Region origin ASes announcing only one prefix: 5612
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: 24
Number of RIPE addresses announced to Internet: 338279296
Equivalent to 20 /8s, 41 /16s and 187 /24s
Percentage of available RIPE address space announced: 77.6
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: 18011
Total LACNIC prefixes after maximum aggregation: 4588
LACNIC Deaggregation factor: 3.93
Prefixes being announced from the LACNIC address blocks: 15990
Unique aggregates announced from the LACNIC address blocks: 8885
LACNIC Region origin ASes present in the Internet Routing Table: 884
LACNIC Prefixes per ASN: 18.09
LACNIC Region origin ASes announcing only one prefix: 284
LACNIC Region transit ASes present in the Internet Routing Table: 156
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 47004416
Equivalent to 2 /8s, 205 /16s and 59 /24s
Percentage of available LACNIC address space announced: 46.7
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: 3271
Total AfriNIC prefixes after maximum aggregation: 1088
AfriNIC Deaggregation factor: 3.01
Prefixes being announced from the AfriNIC address blocks: 2426
Unique aggregates announced from the AfriNIC address blocks: 1446
AfriNIC Region origin ASes present in the Internet Routing Table: 213
AfriNIC Prefixes per ASN: 11.39
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: 3.7
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 8193792
Equivalent to 0 /8s, 125 /16s and 7 /24s
Percentage of available AfriNIC address space announced: 24.4
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 1490 383 71 Videsh Sanchar Nigam Ltd. Aut
9583 1093 81 431 Sify Limited
9498 1059 549 63 BHARTI BT INTERNET LTD.
4134 1041 11569 305 CHINANET-BACKBONE
17488 917 59 80 Hathway IP Over Cable Interne
4766 818 5474 330 Korea Telecom (KIX)
23577 797 34 680 Korea Telecom (ATM-MPLS)
7545 667 146 113 TPG Internet Pty Ltd
18101 610 120 57 Reliance Infocom Ltd Internet
9829 584 448 10 BSNL National Internet Backbo
1221 546 1952 422 Telstra Pty Ltd
4668 519 68 10 LG-EDS Systems Inc.
4808 519 796 120 CNCGROUP IP network: China169
4812 515 865 81 China Telecom (Shanghai)
17676 504 10919 64 Softbank BB Corp.
4802 468 126 149 Wantree Development
9443 440 121 70 Primus Telecommunications
17974 407 145 17 PT TELEKOMUNIKASI INDONESIA
7474 384 202 270 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 1494 6121 1005 AT&T WorldNet Services
4323 1385 1015 363 Time Warner Telecom
2386 1321 635 796 AT&T Data Communications Serv
11492 1172 124 41 Cable One
6478 1118 329 193 AT&T Worldnet Services
18566 1034 288 9 Covad Communications
6197 1031 721 510 BellSouth Network Solutions,
7011 992 295 578 Citizens Utilities
174 969 6857 820 Cogent Communications
701 897 6548 703 UUNET Technologies, Inc.
20115 847 774 457 Charter Communications
3356 841 10904 417 Level 3 Communications, LLC
22773 830 2138 58 Cox Communications, Inc.
19262 800 3046 188 Verizon Global Networks
1239 789 2672 550 Sprint
209 741 3786 582 Qwest
5668 664 177 20 CenturyTel Internet Holdings,
15270 608 160 41 PaeTec.net -a division of Pae
6517 600 163 33 Yipes Communications, Inc.
852 584 1110 357 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 408 1653 368 TDC Tele Danmark
9116 341 184 28 Goldenlines main autonomous s
3301 319 1457 294 TeliaNet Sweden
3320 316 6019 262 Deutsche Telekom AG
8866 282 78 26 Bulgarian Telecommunication C
8452 280 188 7 TEDATA
6746 277 130 254 Dynamic Network Technologies,
8551 277 266 40 Bezeq International
8708 273 421 245 Romania Data Systems S.A.
3215 270 2583 92 France Telecom Transpac
680 268 2045 254 DFN-IP service G-WiN
8220 247 439 230 COLT Telecommunications
3352 235 1948 40 Ibernet, Internet Access Netw
3269 229 3029 67 TELECOM ITALIA
3300 214 220 102 AUCS Communications Services
9121 212 1444 26 TTnet Autonomous System
9155 199 43 11 QualityNet AS number
1257 195 1195 178 SWIPnet Swedish IP Network
12479 195 578 6 Uni2 Autonomous System
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 1158 2409 219 UniNet S.A. de C.V.
11830 539 299 9 Instituto Costarricense de El
16814 427 27 10 NSS, S.A.
7303 406 197 61 Telecom Argentina Stet-France
11172 379 115 62 Servicios Alestra S.A de C.V
14522 379 34 8 SatNet S.A.
6471 363 85 38 ENTEL CHILE S.A.
22047 322 254 13 VTR PUNTO NET S.A.
10481 301 120 10 Prima S.A.
10620 289 79 23 TVCABLE BOGOTA
14117 285 19 15 Telefonica del Sur S.A.
6147 256 214 21 Telefonica Del Peru
7738 238 602 25 Telecomunicacoes da Bahia S.A
11556 236 128 4 Cable-Wireless Panama
20299 223 33 29 NEWCOM AMERICAS
23216 222 17 47 RAMtelecom Telecomunicaciones
6503 220 187 86 AVANTEL, S.A.
28573 216 321 29 NET Servicos de Comunicao S.A
19169 190 12 20 Telconet
21826 186 33 47 INTERCABLE
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
24863 391 60 36 LINKdotNET AS number
3741 280 869 226 The Internet Solution
20858 200 34 3 EgyNet
6713 145 135 11 Itissalat Al-MAGHRIB
2018 144 300 116 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 86 84 4 Nile Online
2905 77 174 73 The Internetworking Company o
23889 75 24 15 MAURITIUS TELECOM
20484 66 5 6 Yalla Online Autonomous Syste
15706 58 12 4 Sudatel Internet Exchange Aut
29571 57 13 7 Ci Telecom Autonomous system
33774 50 37 28 AS Number for Telecom Algeria
5713 47 423 37 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
4755 1490 1419 Videsh Sanchar Nigam Ltd. Aut
11492 1172 1131 Cable One
18566 1034 1025 Covad Communications
4323 1385 1022 Time Warner Telecom
9498 1059 996 BHARTI BT INTERNET LTD.
8151 1158 939 UniNet S.A. de C.V.
6478 1118 925 AT&T Worldnet Services
17488 917 837 Hathway IP Over Cable Interne
22773 830 772 Cox Communications, Inc.
4134 1041 736 CHINANET-BACKBONE
9583 1093 662 Sify Limited
5668 664 644 CenturyTel Internet Holdings,
19262 800 612 Verizon Global Networks
9829 584 574 BSNL National Internet Backbo
15270 608 567 PaeTec.net -a division of Pae
6517 600 567 Yipes Communications, Inc.
7545 667 554 TPG Internet Pty Ltd
18101 610 553 Reliance Infocom Ltd Internet
11830 539 530 Instituto Costarricense de El
2386 1321 525 AT&T Data Communications Serv
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
65068 PRIVATE 79.171.184.0/21 43895 *
64779 PRIVATE 124.161.4.0/23 38356 BeiJing Sincerity-ti
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
/13:270 /14:485 /15:960 /16:9737 /17:4185 /18:6837
/19:14817 /20:16917 /21:15942 /22:20093 /23:21045 /24:125722
/25:821 /26:1035 /27:550 /28:91 /29:5 /30:0
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1163 1172 Cable One
6478 1117 1118 AT&T Worldnet Services
18566 1016 1034 Covad Communications
2386 1012 1321 AT&T Data Communications Serv
9583 938 1093 Sify Limited
7011 877 992 Citizens Utilities
4755 855 1490 Videsh Sanchar Nigam Ltd. Aut
7018 824 1494 AT&T WorldNet Services
23577 788 797 Korea Telecom (ATM-MPLS)
6197 773 1031 BellSouth Network Solutions,
9498 746 1059 BHARTI BT INTERNET LTD.
17488 732 917 Hathway IP Over Cable Interne
4766 606 818 Korea Telecom (KIX)
4323 591 1385 Time Warner Telecom
15270 570 608 PaeTec.net -a division of Pae
19916 564 569 OLM LLC
6517 556 600 Yipes Communications, Inc.
5668 522 664 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 8:91 12:1908 13:2 15:20 16:3
17:6 18:13 20:35 24:1011 25:1 31:1
32:61 33:3 38:364 40:64 41:403 44:2
47:8 52:3 55:3 56:3 57:21 58:487
59:413 60:389 61:995 62:1003 63:1976 64:3287
65:2360 66:3597 67:950 68:646 69:2056 70:465
71:106 72:1458 73:7 74:754 75:263 76:158
77:488 78:376 79:43 80:894 81:814 82:550
83:361 84:617 85:890 86:365 87:613 88:289
89:1057 90:39 91:811 92:13 96:1 97:7
98:18 114:1 115:1 116:447 117:221 118:50
121:351 122:652 123:228 124:748 125:1062 128:309
129:181 130:137 131:375 132:62 133:9 134:194
135:33 136:195 137:82 138:148 139:73 140:513
141:117 142:372 143:260 144:329 145:51 146:331
147:127 148:481 149:184 150:171 151:118 152:95
153:122 154:11 155:270 156:199 157:226 158:165
159:197 160:185 161:100 162:193 163:185 164:558
165:415 166:291 167:311 168:552 169:126 170:417
171:29 172:5 173:1 189:119 190:1285 192:5739
193:4052 194:3226 195:2327 196:931 198:3806 199:3231
200:5216 201:1279 202:7368 203:7819 204:3956 205:2018
206:2416 207:2764 208:3011 209:3558 210:2511 211:1106
212:1274 213:1601 214:415 215:47 216:4075 217:1214
218:331 219:403 220:1014 221:406 222:287
End of report
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