Routing Table Report 00:00 GMT Tue 19 Apr, 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: 359123
Prefixes after maximum aggregation: 161751
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 174674
Total ASes present in the Internet Routing Table: 37339
Prefixes per ASN: 9.62
Origin-only ASes present in the Internet Routing Table: 31297
Origin ASes announcing only one prefix: 14996
Transit ASes present in the Internet Routing Table: 5032
Transit-only ASes present in the Internet Routing Table: 113
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 27
Max AS path prepend of ASN (32374) 19
Prefixes from unregistered ASNs in the Routing Table: 2927
Unregistered ASNs in the Routing Table: 289
Number of 32-bit ASNs allocated by the RIRs: 1303
Number of 32-bit ASNs visible in the Routing Table: 1010
Prefixes from 32-bit ASNs in the Routing Table: 2252
Special use prefixes present in the Routing Table: 76
Prefixes being announced from unallocated address space: 157
Number of addresses announced to Internet: 2413821177
Equivalent to 143 /8s, 223 /16s and 252 /24s
Percentage of available address space announced: 65.1
Percentage of allocated address space announced: 65.1
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.5
Total number of prefixes smaller than registry allocations: 148725
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 86119
Total APNIC prefixes after maximum aggregation: 28786
APNIC Deaggregation factor: 2.99
Prefixes being announced from the APNIC address blocks: 83263
Unique aggregates announced from the APNIC address blocks: 36848
APNIC Region origin ASes present in the Internet Routing Table: 4395
APNIC Prefixes per ASN: 18.94
APNIC Region origin ASes announcing only one prefix: 1234
APNIC Region transit ASes present in the Internet Routing Table: 689
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 21
Number of APNIC region 32-bit ASNs visible in the Routing Table: 48
Number of APNIC addresses announced to Internet: 610202817
Equivalent to 36 /8s, 94 /16s and 244 /24s
Percentage of available APNIC address space announced: 77.4
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: 142925
Total ARIN prefixes after maximum aggregation: 73070
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 115030
Unique aggregates announced from the ARIN address blocks: 45022
ARIN Region origin ASes present in the Internet Routing Table: 14331
ARIN Prefixes per ASN: 8.03
ARIN Region origin ASes announcing only one prefix: 5455
ARIN Region transit ASes present in the Internet Routing Table: 1451
Average ARIN Region AS path length visible: 4.1
Max ARIN Region AS path length visible: 27
Number of ARIN region 32-bit ASNs visible in the Routing Table: 11
Number of ARIN addresses announced to Internet: 797989144
Equivalent to 47 /8s, 144 /16s and 89 /24s
Percentage of available ARIN address space announced: 63.4
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, 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: 87201
Total RIPE prefixes after maximum aggregation: 48058
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 79538
Unique aggregates announced from the RIPE address blocks: 50444
RIPE Region origin ASes present in the Internet Routing Table: 15549
RIPE Prefixes per ASN: 5.12
RIPE Region origin ASes announcing only one prefix: 7742
RIPE Region transit ASes present in the Internet Routing Table: 2467
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 26
Number of RIPE region 32-bit ASNs visible in the Routing Table: 749
Number of RIPE addresses announced to Internet: 466614524
Equivalent to 27 /8s, 207 /16s and 248 /24s
Percentage of available RIPE address space announced: 75.2
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: 32591
Total LACNIC prefixes after maximum aggregation: 7448
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 31632
Unique aggregates announced from the LACNIC address blocks: 16435
LACNIC Region origin ASes present in the Internet Routing Table: 1440
LACNIC Prefixes per ASN: 21.97
LACNIC Region origin ASes announcing only one prefix: 431
LACNIC Region transit ASes present in the Internet Routing Table: 259
Average LACNIC Region AS path length visible: 4.5
Max LACNIC Region AS path length visible: 18
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 197
Number of LACNIC addresses announced to Internet: 82361228
Equivalent to 4 /8s, 232 /16s and 187 /24s
Percentage of available LACNIC address space announced: 54.5
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: 7718
Total AfriNIC prefixes after maximum aggregation: 1833
AfriNIC Deaggregation factor: 4.21
Prefixes being announced from the AfriNIC address blocks: 6059
Unique aggregates announced from the AfriNIC address blocks: 1883
AfriNIC Region origin ASes present in the Internet Routing Table: 447
AfriNIC Prefixes per ASN: 13.55
AfriNIC Region origin ASes announcing only one prefix: 134
AfriNIC Region transit ASes present in the Internet Routing Table: 99
Average AfriNIC Region AS path length visible: 4.4
Max AfriNIC Region AS path length visible: 22
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23279360
Equivalent to 1 /8s, 99 /16s and 55 /24s
Percentage of available AfriNIC address space announced: 34.7
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 1871 9492 600 Korea Telecom (KIX)
17974 1813 507 30 PT TELEKOMUNIKASI INDONESIA
7545 1497 300 81 TPG Internet Pty Ltd
4755 1441 378 164 Videsh Sanchar Nigam Ltd. Aut
24560 1138 322 203 Bharti Airtel Ltd.
9583 1055 77 496 Sify Limited
9829 1008 870 50 BSNL National Internet Backbo
17488 957 164 98 Hathway IP Over Cable Interne
4808 954 2034 277 CNCGROUP IP network: China169
18101 935 116 139 Reliance Infocom Ltd Internet
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 3661 3822 256 bellsouth.net, inc.
4323 2642 1106 396 Time Warner Telecom
1785 1791 681 128 AppliedTheory Corporation
18566 1760 349 229 Covad Communications
6478 1624 307 35 AT&T Worldnet Services
20115 1585 1554 639 Charter Communications
19262 1496 4949 299 Verizon Global Networks
7018 1362 6946 890 AT&T WorldNet Services
22773 1299 2865 84 Cox Communications, Inc.
2386 1272 536 913 AT&T Data Communications Serv
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 1020 798 175 KPNQwest Backbone AS
9116 542 326 30 Goldenlines main autonomous s
6830 519 1780 320 UPC Distribution Services
3292 508 1997 391 TDC Tele Danmark
34984 508 106 182 Tellcom Iletisim Hizmetleri
29049 465 33 37 AzerSat LLC.
8866 447 134 26 Bulgarian Telecommunication C
20940 441 127 338 Akamai Technologies European
3320 417 7607 363 Deutsche Telekom AG
8402 411 320 32 Corbina telecom
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 1430 266 157 TVCABLE BOGOTA
8151 1358 2667 372 Uninet S.A. de C.V.
28573 1280 988 87 Types of queries are: POCs, o
7303 928 467 148 Telecom Argentina Stet-France
6503 907 354 73 AVANTEL, S.A.
14420 663 53 91 Types of queries are: POCs, o
22047 568 310 15 Types of queries are: POCs, o
3816 518 225 97 COLOMBIA TELECOMUNICACIONES S
14117 492 46 43 Telefonica del Sur S.A.
27947 490 53 53 Telconet 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 839 445 11 TEDATA
24863 779 147 40 LINKdotNET AS number
15475 431 90 8 Nile Online
36992 297 415 13 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 235 215 13 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
24835 219 78 10 RAYA Telecom - Egypt
29571 161 17 11 Ci Telecom Autonomous system
16637 155 441 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 3661 3822 256 bellsouth.net, inc.
4323 2642 1106 396 Time Warner Telecom
23456 2252 650 1230 >>UNKNOWN<<
4766 1871 9492 600 Korea Telecom (KIX)
17974 1813 507 30 PT TELEKOMUNIKASI INDONESIA
1785 1791 681 128 AppliedTheory Corporation
18566 1760 349 229 Covad Communications
6478 1624 307 35 AT&T Worldnet Services
20115 1585 1554 639 Charter Communications
7545 1497 300 81 TPG Internet Pty Ltd
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 2642 2246 Time Warner Telecom
17974 1813 1783 PT TELEKOMUNIKASI INDONESIA
1785 1791 1663 AppliedTheory Corporation
6478 1624 1589 AT&T Worldnet Services
18566 1760 1531 Covad Communications
7545 1497 1416 TPG Internet Pty Ltd
4755 1441 1277 Videsh Sanchar Nigam Ltd. Aut
10620 1430 1273 TVCABLE BOGOTA
4766 1871 1271 Korea Telecom (KIX)
11492 1265 1250 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
45083 UNALLOCATED 1.45.0.0/16 4808 CNCGROUP IP network:
45083 UNALLOCATED 1.45.92.0/22 4808 CNCGROUP IP network:
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
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
24.225.128.0/18 36377 Comcast Telecommunications, I
24.225.192.0/23 36377 Comcast Telecommunications, I
24.225.192.0/18 36377 Comcast Telecommunications, I
24.225.224.0/21 36377 Comcast Telecommunications, I
24.225.237.0/24 36377 Comcast Telecommunications, I
24.225.248.0/21 36377 Comcast Telecommunications, I
31.12.96.0/19 29550 Blueconnex Networks Ltd
31.13.0.0/21 29550 Blueconnex Networks Ltd
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>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 /8:21 /9:12 /10:28 /11:78 /12:220
/13:453 /14:781 /15:1404 /16:11723 /17:5994 /18:9785
/19:19689 /20:25851 /21:25999 /22:34099 /23:33116 /24:187129
/25:377 /26:359 /27:168 /28:283 /29:202 /30:660
/31:60 /32:632
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2257 3661 bellsouth.net, inc.
18566 1728 1760 Covad Communications
6478 1578 1624 AT&T Worldnet Services
4323 1341 2642 Time Warner Telecom
10620 1320 1430 TVCABLE BOGOTA
11492 1214 1265 Cable One
23456 1138 2252 >>UNKNOWN<<
7011 1062 1161 Citizens Utilities
1785 1058 1791 AppliedTheory Corporation
286 880 1020 KPNQwest Backbone AS
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:257 2:72 4:18 5:1 6:1 8:348
12:2015 13:1 14:436 15:15 16:3 17:8
20:9 23:5 24:1621 27:691 31:221 32:126
33:3 34:2 37:1 38:764 40:101 41:2391
42:1 44:3 46:858 47:4 49:173 50:358
52:13 55:5 56:2 57:40 58:847 59:480
60:387 61:1264 62:1026 63:1934 64:3951 65:2327
66:4373 67:1847 68:1257 69:3062 70:745 71:351
72:1941 73:3 74:2402 75:312 76:344 77:872
78:695 79:482 80:1117 81:836 82:502 83:462
84:658 85:1090 86:609 87:782 88:337 89:1624
90:181 91:3716 92:518 93:1076 94:1285 95:798
96:456 97:251 98:825 99:35 101:62 103:1
106:1 107:4 108:84 109:948 110:556 111:690
112:325 113:389 114:526 115:683 116:959 117:674
118:806 119:1136 120:290 121:677 122:1636 123:1066
124:1248 125:1268 128:265 129:167 130:172 131:567
132:113 133:20 134:220 135:49 136:214 137:142
138:302 139:115 140:487 141:174 142:401 143:390
144:485 145:53 146:441 147:215 148:521 149:233
150:170 151:187 152:307 153:180 154:3 155:394
156:191 157:356 158:132 159:382 160:316 161:243
162:277 163:164 164:486 165:368 166:513 167:424
168:724 169:155 170:783 171:75 172:1 173:1512
174:534 175:359 177:71 178:870 180:819 181:7
182:427 183:197 184:334 185:1 186:1141 187:791
188:994 189:995 190:4845 192:5817 193:4847 194:3522
195:3107 196:1212 197:16 198:3580 199:3926 200:5544
201:1510 202:8358 203:8444 204:4133 205:2334 206:2764
207:3031 208:3978 209:3511 210:2736 211:1368 212:2038
213:1773 214:734 215:67 216:4880 217:1667 218:561
219:386 220:1199 221:477 222:341 223:138
End of report
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