Routing Table Report 00:00 GMT Sat 19 Feb, 2011
NB: RouteViews data includes iBGP information from some ASNs.
Treat the information provided below appropriately.
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/rviews/
Analysis Summary
----------------
BGP routing table entries examined: 351856
Prefixes after maximum aggregation: 157944
Deaggregation factor: 2.23
Unique aggregates announced to Internet: 171536
Total ASes present in the Internet Routing Table: 35931
Prefixes per ASN: 9.79
Origin-only ASes present in the Internet Routing Table: 30974
Origin ASes announcing only one prefix: 14934
Transit ASes present in the Internet Routing Table: 4957
Transit-only ASes present in the Internet Routing Table: 117
Average AS path length visible in the Internet Routing Table: 4.8
Max AS path length visible: 33
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 412
Unregistered ASNs in the Routing Table: 163
Number of 32-bit ASNs allocated by the RIRs: 1131
Prefixes from 32-bit ASNs in the Routing Table: 3
Special use prefixes present in the Routing Table: 74
Prefixes being announced from unallocated address space: 213
Number of addresses announced to Internet: 2396631751
Equivalent to 142 /8s, 217 /16s and 178 /24s
Percentage of available address space announced: 64.7
Percentage of allocated address space announced: 64.7
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 88.0
Total number of prefixes smaller than registry allocations: 145529
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 84307
Total APNIC prefixes after maximum aggregation: 28201
APNIC Deaggregation factor: 2.99
Prefixes being announced from the APNIC address blocks: 81236
Unique aggregates announced from the APNIC address blocks: 35877
APNIC Region origin ASes present in the Internet Routing Table: 4319
APNIC Prefixes per ASN: 18.81
APNIC Region origin ASes announcing only one prefix: 1223
APNIC Region transit ASes present in the Internet Routing Table: 681
Average APNIC Region AS path length visible: 5.5
Max APNIC Region AS path length visible: 21
Number of APNIC addresses announced to Internet: 589641410
Equivalent to 35 /8s, 37 /16s and 54 /24s
Percentage of available APNIC address space announced: 74.8
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079
55296-56319, 131072-132095
APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8,
49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8,
106/8, 110/8, 111/8, 112/8, 113/8, 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, 133/8, 175/8, 180/8,
182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8,
219/8, 220/8, 221/8, 222/8, 223/8,
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 142695
Total ARIN prefixes after maximum aggregation: 73490
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 113216
Unique aggregates announced from the ARIN address blocks: 44895
ARIN Region origin ASes present in the Internet Routing Table: 14220
ARIN Prefixes per ASN: 7.96
ARIN Region origin ASes announcing only one prefix: 5389
ARIN Region transit ASes present in the Internet Routing Table: 1471
Average ARIN Region AS path length visible: 4.4
Max ARIN Region AS path length visible: 27
Number of ARIN addresses announced to Internet: 787414937
Equivalent to 46 /8s, 238 /16s and 255 /24s
Percentage of available ARIN address space announced: 62.6
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, 46080-47103
53248-55295, 393216-394239
ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8,
12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8,
20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8,
29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8,
40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8,
53/8, 54/8, 55/8, 56/8, 57/8, 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, 100/8, 104/8, 107/8, 108/8, 173/8,
174/8, 184/8, 199/8, 204/8, 205/8, 206/8, 207/8,
208/8, 209/8, 214/8, 215/8, 216/8,
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 85526
Total RIPE prefixes after maximum aggregation: 46943
RIPE Deaggregation factor: 1.82
Prefixes being announced from the RIPE address blocks: 78060
Unique aggregates announced from the RIPE address blocks: 49046
RIPE Region origin ASes present in the Internet Routing Table: 15352
RIPE Prefixes per ASN: 5.08
RIPE Region origin ASes announcing only one prefix: 7751
RIPE Region transit ASes present in the Internet Routing Table: 2381
Average RIPE Region AS path length visible: 4.9
Max RIPE Region AS path length visible: 25
Number of RIPE addresses announced to Internet: 460415045
Equivalent to 27 /8s, 113 /16s and 96 /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
40960-45055, 47104-52223, 56320-58367
196608-198655
RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8,
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, 109/8,
176/8, 178/8, 185/8, 193/8, 194/8, 195/8, 212/8,
213/8, 217/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 31869
Total LACNIC prefixes after maximum aggregation: 7369
LACNIC Deaggregation factor: 4.32
Prefixes being announced from the LACNIC address blocks: 30625
Unique aggregates announced from the LACNIC address blocks: 15951
LACNIC Region origin ASes present in the Internet Routing Table: 1430
LACNIC Prefixes per ASN: 21.42
LACNIC Region origin ASes announcing only one prefix: 439
LACNIC Region transit ASes present in the Internet Routing Table: 259
Average LACNIC Region AS path length visible: 5.0
Max LACNIC Region AS path length visible: 20
Number of LACNIC addresses announced to Internet: 80811148
Equivalent to 4 /8s, 209 /16s and 20 /24s
Percentage of available LACNIC address space announced: 53.5
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
262144-263167 plus ERX transfers
LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
200/8, 201/8,
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 7199
Total AfriNIC prefixes after maximum aggregation: 1825
AfriNIC Deaggregation factor: 3.94
Prefixes being announced from the AfriNIC address blocks: 5622
Unique aggregates announced from the AfriNIC address blocks: 1836
AfriNIC Region origin ASes present in the Internet Routing Table: 433
AfriNIC Prefixes per ASN: 12.98
AfriNIC Region origin ASes announcing only one prefix: 132
AfriNIC Region transit ASes present in the Internet Routing Table: 97
Average AfriNIC Region AS path length visible: 4.8
Max AfriNIC Region AS path length visible: 33
Number of AfriNIC addresses announced to Internet: 21856000
Equivalent to 1 /8s, 77 /16s and 127 /24s
Percentage of available AfriNIC address space announced: 32.6
AfriNIC AS Blocks 36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks 41/8, 102/8, 105/8, 197/8,
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4766 1840 9491 575 Korea Telecom (KIX)
7545 1610 302 86 TPG Internet Pty Ltd
4755 1423 377 161 Videsh Sanchar Nigam Ltd. Aut
17974 1409 467 30 PT TELEKOMUNIKASI INDONESIA
24560 1113 323 182 Bharti Airtel Ltd.
9583 1043 76 487 Sify Limited
17488 965 162 103 Hathway IP Over Cable Interne
18101 930 117 141 Reliance Infocom Ltd Internet
4808 908 1933 255 CNCGROUP IP network: China169
9829 897 763 42 BSNL National Internet Backbo
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3694 3855 261 bellsouth.net, inc.
4323 2623 1109 405 Time Warner Telecom
19262 1844 4955 284 Verizon Global Networks
1785 1787 697 131 AppliedTheory Corporation
20115 1577 1537 646 Charter Communications
6478 1510 295 78 AT&T Worldnet Services
18566 1433 320 158 Covad Communications
7018 1367 6683 883 AT&T WorldNet Services
2386 1297 553 934 AT&T Data Communications Serv
11492 1280 236 73 Cable One
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
286 981 713 158 KPNQwest Backbone AS
9116 545 328 32 Goldenlines main autonomous s
6830 513 1764 317 UPC Distribution Services
3292 501 1996 389 TDC Tele Danmark
9198 468 267 15 Kazakhtelecom Corporate Sales
34984 463 98 143 Tellcom Iletisim Hizmetleri
8866 441 133 23 Bulgarian Telecommunication C
20940 415 98 320 Akamai Technologies European
3320 410 7620 357 Deutsche Telekom AG
8551 405 355 38 Bezeq International
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
10620 1370 254 164 TVCABLE BOGOTA
8151 1348 2661 360 Uninet S.A. de C.V.
28573 1232 961 82 Types of queries are: POCs, o
6503 1168 354 74 AVANTEL, S.A.
7303 900 463 142 Telecom Argentina Stet-France
14420 638 57 92 Types of queries are: POCs, o
3816 585 223 105 COLOMBIA TELECOMUNICACIONES S
22047 545 310 15 Types of queries are: POCs, o
7738 478 922 30 Telecomunicacoes da Bahia S.A
14117 476 37 42 Telefonica del Sur S.A.
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8452 678 445 11 TEDATA
24863 568 147 40 LINKdotNET AS number
15475 502 90 12 Nile Online
36992 299 271 14 Etisalat MISR
3741 264 987 226 The Internet Solution
24835 220 78 10 RAYA Telecom - Egypt
6713 205 199 12 Itissalat Al-MAGHRIB
33776 194 12 15 Starcomms Nigeria Limited
29571 192 17 11 Ci Telecom Autonomous system
16637 152 422 86 Johnnic e-Ventures
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3694 3855 261 bellsouth.net, inc.
4323 2623 1109 405 Time Warner Telecom
19262 1844 4955 284 Verizon Global Networks
4766 1840 9491 575 Korea Telecom (KIX)
1785 1787 697 131 AppliedTheory Corporation
7545 1610 302 86 TPG Internet Pty Ltd
20115 1577 1537 646 Charter Communications
6478 1510 295 78 AT&T Worldnet Services
18566 1433 320 158 Covad Communications
4755 1423 377 161 Videsh Sanchar Nigam Ltd. Aut
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 2623 2218 Time Warner Telecom
1785 1787 1656 AppliedTheory Corporation
19262 1844 1560 Verizon Global Networks
7545 1610 1524 TPG Internet Pty Ltd
6478 1510 1432 AT&T Worldnet Services
17974 1409 1379 PT TELEKOMUNIKASI INDONESIA
18566 1433 1275 Covad Communications
4766 1840 1265 Korea Telecom (KIX)
4755 1423 1262 Videsh Sanchar Nigam Ltd. Aut
11492 1280 1207 Cable One
Complete listing at http://thyme.rand.apnic.net/rviews/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
16927 UNALLOCATED 12.0.252.0/23 7018 AT&T WorldNet Servic
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.14.170.0/24 7018 AT&T WorldNet Servic
13746 UNALLOCATED 12.24.56.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.25.107.0/24 4323 Time Warner Telecom
26973 UNALLOCATED 12.39.152.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.154.0/23 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.155.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.159.0/24 7018 AT&T WorldNet Servic
25639 UNALLOCATED 12.41.169.0/24 7018 AT&T WorldNet Servic
Complete listing at http://thyme.rand.apnic.net/rviews/data-badAS
Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------
Prefix Origin AS Description
10.29.244.56/29 286 KPNQwest Backbone AS
10.29.245.1/32 286 KPNQwest Backbone AS
10.29.245.2/32 286 KPNQwest Backbone AS
10.29.245.15/32 286 KPNQwest Backbone AS
10.29.245.19/32 286 KPNQwest Backbone AS
10.29.245.20/32 286 KPNQwest Backbone AS
10.29.245.21/32 286 KPNQwest Backbone AS
10.29.245.22/32 286 KPNQwest Backbone AS
10.29.245.25/32 286 KPNQwest Backbone AS
10.29.245.26/32 286 KPNQwest Backbone AS
Complete listing at http://thyme.rand.apnic.net/rviews/data-dsua
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
5.0.0.0/16 12654 RIPE NCC RIS Project
5.1.0.0/21 12654 RIPE NCC RIS Project
5.1.24.0/24 12654 RIPE NCC RIS Project
24.129.192.0/19 7922 Continental Cablevision
37.0.0.0/16 12654 RIPE NCC RIS Project
37.1.0.0/21 12654 RIPE NCC RIS Project
37.1.24.0/24 12654 RIPE NCC RIS Project
39.0.0.0/8 237 Merit Network
41.57.192.0/18 22750 BCSNET
41.222.79.0/24 36938 >>UNKNOWN<<
Complete listing at http://thyme.rand.apnic.net/rviews/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 /8:22 /9:10 /10:26 /11:73 /12:216
/13:445 /14:769 /15:1395 /16:11621 /17:5884 /18:9626
/19:19363 /20:25076 /21:25231 /22:33346 /23:32095 /24:183523
/25:398 /26:368 /27:217 /28:385 /29:326 /30:731
/31:46 /32:664
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2281 3694 bellsouth.net, inc.
6478 1464 1510 AT&T Worldnet Services
4323 1413 2623 Time Warner Telecom
18566 1411 1433 Covad Communications
10620 1261 1370 TVCABLE BOGOTA
11492 1237 1280 Cable One
7011 1057 1160 Citizens Utilities
1785 1054 1787 AppliedTheory Corporation
19262 954 1844 Verizon Global Networks
6503 951 1168 AVANTEL, S.A.
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:196 2:61 4:17 5:1 8:335 12:2034
13:1 14:409 15:15 16:3 17:8 20:9
23:1 24:1503 27:586 32:127 33:4 34:2
37:1 38:706 40:101 41:2209 44:3 46:618
47:4 49:149 50:93 52:12 55:2 56:2
57:43 58:866 59:477 60:391 61:1111 62:1075
63:1946 64:3848 65:2353 66:4248 67:1812 68:1183
69:3035 70:777 71:407 72:2052 73:3 74:2399
75:304 76:355 77:879 78:714 79:459 80:1063
81:860 82:535 83:484 84:649 85:1064 86:563
87:776 88:360 89:1601 90:157 91:3519 92:495
93:1049 94:1228 95:777 96:453 97:251 98:829
99:33 101:31 107:3 108:88 109:929 110:480
111:706 112:314 113:369 114:500 115:656 116:945
117:687 118:676 119:1014 120:245 121:698 122:1627
123:1052 124:1309 125:1258 128:266 129:159 130:170
131:569 132:109 133:20 134:222 135:49 136:215
137:146 138:293 139:132 140:494 141:203 142:360
143:376 144:486 145:51 146:437 147:213 148:638
149:266 150:161 151:230 152:298 153:180 154:3
155:350 156:176 157:343 158:129 159:380 160:313
161:209 162:274 163:158 164:487 165:355 166:502
167:422 168:742 169:153 170:753 171:69 172:11
173:1329 174:534 175:317 176:1 177:9 178:786
180:814 182:365 183:247 184:277 186:1009 187:812
188:897 189:1067 190:4393 192:5840 193:4825 194:3569
195:3098 196:1197 197:3 198:3591 199:3834 200:5599
201:1594 202:8442 203:8465 204:4104 205:2344 206:2648
207:3087 208:3915 209:3503 210:2646 211:1341 212:1982
213:1788 214:765 215:62 216:4910 217:1643 218:543
219:380 220:1204 221:453 222:337 223:100
End of report
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