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From: Routing Analysis Role Account (no email)
Date: Fri Feb 01 2008 - 13:07:05 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 02 Feb, 2008
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 243583
Prefixes after maximum aggregation: 124880
Deaggregation factor: 1.95
Unique aggregates announced to Internet: 119568
Total ASes present in the Internet Routing Table: 27234
Prefixes per ASN: 8.94
Origin-only ASes present in the Internet Routing Table: 23738
Origin ASes announcing only one prefix: 11535
Transit ASes present in the Internet Routing Table: 3496
Transit-only ASes present in the Internet Routing Table: 69
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: 37
Unregistered ASNs in the Routing Table: 14
Number of 32-bit ASNs allocated by the RIRs: 46
Prefixes from 32-bit ASNs in the Routing Table: 10
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 870
Number of addresses announced to Internet: 1825248736
Equivalent to 108 /8s, 203 /16s and 21 /24s
Percentage of available address space announced: 49.2
Percentage of allocated address space announced: 61.1
Percentage of available address space allocated: 80.5
Percentage of address space in use by end-sites: 69.9
Total number of prefixes smaller than registry allocations: 114737
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 55577
Total APNIC prefixes after maximum aggregation: 21145
APNIC Deaggregation factor: 2.63
Prefixes being announced from the APNIC address blocks: 53070
Unique aggregates announced from the APNIC address blocks: 23817
APNIC Region origin ASes present in the Internet Routing Table: 3112
APNIC Prefixes per ASN: 17.05
APNIC Region origin ASes announcing only one prefix: 818
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: 17
Number of APNIC addresses announced to Internet: 327917984
Equivalent to 19 /8s, 139 /16s and 161 /24s
Percentage of available APNIC address space announced: 75.2
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: 114927
Total ARIN prefixes after maximum aggregation: 65329
ARIN Deaggregation factor: 1.76
Prefixes being announced from the ARIN address blocks: 83837
Unique aggregates announced from the ARIN address blocks: 33406
ARIN Region origin ASes present in the Internet Routing Table: 12107
ARIN Prefixes per ASN: 6.92
ARIN Region origin ASes announcing only one prefix: 4669
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: 356357248
Equivalent to 21 /8s, 61 /16s and 148 /24s
Percentage of available ARIN address space announced: 78.7
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, 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: 51395
Total RIPE prefixes after maximum aggregation: 32577
RIPE Deaggregation factor: 1.58
Prefixes being announced from the RIPE address blocks: 46737
Unique aggregates announced from the RIPE address blocks: 31450
RIPE Region origin ASes present in the Internet Routing Table: 10829
RIPE Prefixes per ASN: 4.32
RIPE Region origin ASes announcing only one prefix: 5686
RIPE Region transit ASes present in the Internet Routing Table: 1661
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 18
Number of RIPE addresses announced to Internet: 339381504
Equivalent to 20 /8s, 58 /16s and 141 /24s
Percentage of available RIPE address space announced: 77.8
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: 18505
Total LACNIC prefixes after maximum aggregation: 4650
LACNIC Deaggregation factor: 3.98
Prefixes being announced from the LACNIC address blocks: 16898
Unique aggregates announced from the LACNIC address blocks: 9215
LACNIC Region origin ASes present in the Internet Routing Table: 898
LACNIC Prefixes per ASN: 18.82
LACNIC Region origin ASes announcing only one prefix: 295
LACNIC Region transit ASes present in the Internet Routing Table: 151
Average LACNIC Region AS path length visible: 3.9
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 48028928
Equivalent to 2 /8s, 220 /16s and 221 /24s
Percentage of available LACNIC address space announced: 47.7
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: 3148
Total AfriNIC prefixes after maximum aggregation: 1159
AfriNIC Deaggregation factor: 2.72
Prefixes being announced from the AfriNIC address blocks: 3450
Unique aggregates announced from the AfriNIC address blocks: 1707
AfriNIC Region origin ASes present in the Internet Routing Table: 218
AfriNIC Prefixes per ASN: 15.83
AfriNIC Region origin ASes announcing only one prefix: 67
AfriNIC Region transit ASes present in the Internet Routing Table: 37
Average AfriNIC Region AS path length visible: 4.1
Max AfriNIC Region AS path length visible: 15
Number of AfriNIC addresses announced to Internet: 9763328
Equivalent to 0 /8s, 148 /16s and 250 /24s
Percentage of available AfriNIC address space announced: 29.1
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
4755 1558 384 75 Videsh Sanchar Nigam Ltd. Aut
9498 1147 533 60 BHARTI BT INTERNET LTD.
9583 1116 82 435 Sify Limited
17488 961 62 87 Hathway IP Over Cable Interne
4134 861 11849 310 CHINANET-BACKBONE
4766 843 5495 342 Korea Telecom (KIX)
23577 815 34 694 Korea Telecom (ATM-MPLS)
9829 570 449 11 BSNL National Internet Backbo
4812 549 940 84 China Telecom (Shanghai)
1221 547 1952 422 Telstra Pty Ltd
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 1436 6020 982 AT&T WorldNet Services
4323 1386 1012 366 Time Warner Telecom
2386 1354 634 832 AT&T Data Communications Serv
11492 1216 136 19 Cable One
18566 1041 296 10 Covad Communications
7011 1035 301 597 Citizens Utilities
6197 1034 739 512 BellSouth Network Solutions,
174 970 6834 811 Cogent Communications
6478 909 234 104 AT&T Worldnet Services
701 895 6575 686 UUNET Technologies, Inc.
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 395 1650 358 TDC Tele Danmark
3301 332 1458 303 TeliaNet Sweden
3320 322 6020 267 Deutsche Telekom AG
8866 280 78 24 Bulgarian Telecommunication C
8551 279 267 42 Bezeq International
680 275 2046 256 DFN-IP service G-WiN
8708 272 420 242 Romania Data Systems S.A.
3215 271 2591 93 France Telecom Transpac
6746 271 128 249 Dynamic Network Technologies,
8220 250 422 226 COLT Telecommunications
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 1165 2421 213 UniNet S.A. de C.V.
11830 547 299 9 Instituto Costarricense de El
7303 436 212 59 Telecom Argentina Stet-France
16814 428 27 11 NSS, S.A.
6471 394 85 39 ENTEL CHILE S.A.
11172 394 115 62 Servicios Alestra S.A de C.V
10620 352 92 26 TVCABLE BOGOTA
14117 351 23 16 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 337 52 84 LINKdotNET AS number
3741 279 869 225 The Internet Solution
6713 143 135 11 Itissalat Al-MAGHRIB
24835 143 48 7 RAYA Telecom - Egypt
2018 142 268 114 Tertiary Education Network
33783 129 9 15 EEPAD TISP TELECOM & INTERNET
5536 124 8 10 Internet Egypt Network
15475 101 84 4 Nile Online
33776 99 6 7 Starcomms Nigeria Limited
23889 78 24 16 MAURITIUS TELECOM
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 1558 384 75 Videsh Sanchar Nigam Ltd. Aut
7018 1436 6020 982 AT&T WorldNet Services
4323 1386 1012 366 Time Warner Telecom
2386 1354 634 832 AT&T Data Communications Serv
11492 1216 136 19 Cable One
8151 1165 2421 213 UniNet S.A. de C.V.
9498 1147 533 60 BHARTI BT INTERNET LTD.
9583 1116 82 435 Sify Limited
18566 1041 296 10 Covad Communications
7011 1035 301 597 Citizens Utilities
Complete listing at http://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
11492 1216 1197 Cable One
9498 1147 1087 BHARTI BT INTERNET LTD.
18566 1041 1031 Covad Communications
4323 1386 1020 Time Warner Telecom
8151 1165 952 UniNet S.A. de C.V.
17488 961 874 Hathway IP Over Cable Interne
6478 909 805 AT&T Worldnet Services
22773 845 787 Cox Communications, Inc.
19262 878 728 Verizon Global Networks
9583 1116 681 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
14699 UNALLOCATED 63.238.252.0/24 30517 Great Lakes Comnet,
14699 UNALLOCATED 63.238.253.0/24 30517 Great Lakes Comnet,
14699 UNALLOCATED 64.85.144.0/22 30517 Great Lakes Comnet,
33526 UNALLOCATED 64.128.26.0/24 4323 Time Warner Telecom
14699 UNALLOCATED 65.112.79.0/24 30517 Great Lakes Comnet,
21624 UNALLOCATED 65.163.176.0/24 701 UUNET Technologies,
14699 UNALLOCATED 72.35.42.0/24 30517 Great Lakes Comnet,
14699 UNALLOCATED 72.35.43.0/24 30517 Great Lakes Comnet,
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
24.49.32.0/22 19548 Adelphia Business Solutions
24.54.224.0/19 19548 Adelphia Business Solutions
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
60.253.0.0/18 27572 Connexion by Boeing
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 /10:15 /11:39 /12:137
/13:277 /14:491 /15:976 /16:9749 /17:4219 /18:7037
/19:14993 /20:17152 /21:16168 /22:20452 /23:21553 /24:127654
/25:873 /26:1095 /27:561 /28:96 /29:9 /30:1
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
11492 1205 1216 Cable One
2386 1054 1354 AT&T Data Communications Serv
18566 1022 1041 Covad Communications
9583 963 1116 Sify Limited
4755 919 1558 Videsh Sanchar Nigam Ltd. Aut
7011 919 1035 Citizens Utilities
6478 908 909 AT&T Worldnet Services
9498 822 1147 BHARTI BT INTERNET LTD.
23577 806 815 Korea Telecom (ATM-MPLS)
7018 786 1436 AT&T WorldNet Services
Complete listing at http://thyme.apnic.net/current/data/sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:9 8:98 12:1954 13:2 15:21 16:3
17:6 18:13 20:35 22:1 24:1017 25:1
31:1 32:61 33:4 38:383 40:65 41:444
44:2 47:8 52:3 55:3 56:3 57:22
58:511 59:416 60:407 61:981 62:1025 63:1976
64:3362 65:2359 66:3626 67:1063 68:638 69:2081
70:469 71:107 72:1489 73:7 74:805 75:170
76:205 77:525 78:408 79:72 80:868 81:789
82:607 83:346 84:445 85:1021 86:385 87:633
88:311 89:1100 90:43 91:972 92:108 93:54
95:1 96:8 97:9 98:38 114:1 115:1
116:498 117:239 118:69 119:109 121:416 122:667
123:285 124:777 125:1108 128:308 129:198 130:133
131:389 132:68 133:9 134:188 135:37 136:217
137:85 138:156 139:63 140:497 141:107 142:378
143:263 144:282 145:51 146:336 147:132 148:485
149:178 150:121 151:139 152:95 153:130 154:11
155:286 156:198 157:250 158:163 159:216 160:219
161:102 162:199 163:190 164:558 165:419 166:295
167:309 168:564 169:131 170:432 171:28 172:3
173:1 189:149 190:1356 192:5761 193:4097 194:3252
195:2316 196:936 198:3786 199:3209 200:5436 201:1275
202:7390 203:7744 204:3968 205:2064 206:2420 207:2734
208:3131 209:3621 210:2524 211:1020 212:1281 213:1587
214:439 215:41 216:4124 217:1181 218:337 219:401
220:970 221:408 222:308
End of report
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