Routing Table Report 00:00 GMT Tue 05 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: 356134
Prefixes after maximum aggregation: 161113
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 173995
Total ASes present in the Internet Routing Table: 37189
Prefixes per ASN: 9.58
Origin-only ASes present in the Internet Routing Table: 31227
Origin ASes announcing only one prefix: 14974
Transit ASes present in the Internet Routing Table: 5007
Transit-only ASes present in the Internet Routing Table: 124
Average AS path length visible in the Internet Routing Table: 3.9
Max AS path length visible: 23
Max AS path prepend of ASN (32374) 19
Prefixes from unregistered ASNs in the Routing Table: 2715
Unregistered ASNs in the Routing Table: 251
Number of 32-bit ASNs allocated by the RIRs: 1259
Number of 32-bit ASNs visible in the Routing Table: 955
Prefixes from 32-bit ASNs in the Routing Table: 2134
Special use prefixes present in the Routing Table: 75
Prefixes being announced from unallocated address space: 197
Number of addresses announced to Internet: 2394293816
Equivalent to 142 /8s, 182 /16s and 6 /24s
Percentage of available address space announced: 64.6
Percentage of allocated address space announced: 64.6
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.1
Total number of prefixes smaller than registry allocations: 147442
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 85381
Total APNIC prefixes after maximum aggregation: 28826
APNIC Deaggregation factor: 2.96
Prefixes being announced from the APNIC address blocks: 82419
Unique aggregates announced from the APNIC address blocks: 36652
APNIC Region origin ASes present in the Internet Routing Table: 4364
APNIC Prefixes per ASN: 18.89
APNIC Region origin ASes announcing only one prefix: 1226
APNIC Region transit ASes present in the Internet Routing Table: 688
Average APNIC Region AS path length visible: 4.3
Max APNIC Region AS path length visible: 23
Number of APNIC region 32-bit ASNs visible in the Routing Table: 46
Number of APNIC addresses announced to Internet: 602218689
Equivalent to 35 /8s, 229 /16s and 32 /24s
Percentage of available APNIC address space announced: 76.4
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: 141663
Total ARIN prefixes after maximum aggregation: 72794
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 113835
Unique aggregates announced from the ARIN address blocks: 44960
ARIN Region origin ASes present in the Internet Routing Table: 14308
ARIN Prefixes per ASN: 7.96
ARIN Region origin ASes announcing only one prefix: 5442
ARIN Region transit ASes present in the Internet Routing Table: 1463
Average ARIN Region AS path length visible: 3.5
Max ARIN Region AS path length visible: 22
Number of ARIN region 32-bit ASNs visible in the Routing Table: 10
Number of ARIN addresses announced to Internet: 797582360
Equivalent to 47 /8s, 138 /16s and 36 /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: 86585
Total RIPE prefixes after maximum aggregation: 47843
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 79015
Unique aggregates announced from the RIPE address blocks: 50255
RIPE Region origin ASes present in the Internet Routing Table: 15501
RIPE Prefixes per ASN: 5.10
RIPE Region origin ASes announcing only one prefix: 7740
RIPE Region transit ASes present in the Internet Routing Table: 2423
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 21
Number of RIPE region 32-bit ASNs visible in the Routing Table: 708
Number of RIPE addresses announced to Internet: 466074172
Equivalent to 27 /8s, 199 /16s and 186 /24s
Percentage of available RIPE address space announced: 75.1
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: 32458
Total LACNIC prefixes after maximum aggregation: 7458
LACNIC Deaggregation factor: 4.35
Prefixes being announced from the LACNIC address blocks: 31380
Unique aggregates announced from the LACNIC address blocks: 16242
LACNIC Region origin ASes present in the Internet Routing Table: 1441
LACNIC Prefixes per ASN: 21.78
LACNIC Region origin ASes announcing only one prefix: 431
LACNIC Region transit ASes present in the Internet Routing Table: 268
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 186
Number of LACNIC addresses announced to Internet: 81667980
Equivalent to 4 /8s, 222 /16s and 39 /24s
Percentage of available LACNIC address space announced: 54.1
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: 7634
Total AfriNIC prefixes after maximum aggregation: 1821
AfriNIC Deaggregation factor: 4.19
Prefixes being announced from the AfriNIC address blocks: 6018
Unique aggregates announced from the AfriNIC address blocks: 1863
AfriNIC Region origin ASes present in the Internet Routing Table: 440
AfriNIC Prefixes per ASN: 13.68
AfriNIC Region origin ASes announcing only one prefix: 135
AfriNIC Region transit ASes present in the Internet Routing Table: 98
Average AfriNIC Region AS path length visible: 3.7
Max AfriNIC Region AS path length visible: 17
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 22710272
Equivalent to 1 /8s, 90 /16s and 136 /24s
Percentage of available AfriNIC address space announced: 33.8
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 1875 9507 605 Korea Telecom (KIX)
7545 1543 301 85 TPG Internet Pty Ltd
17974 1447 480 33 PT TELEKOMUNIKASI INDONESIA
4755 1436 378 167 Videsh Sanchar Nigam Ltd. Aut
24560 1137 322 204 Bharti Airtel Ltd.
9583 1055 77 494 Sify Limited
4808 1009 2094 294 CNCGROUP IP network: China169
9829 1006 869 51 BSNL National Internet Backbo
17488 956 162 97 Hathway IP Over Cable Interne
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 3664 3838 257 bellsouth.net, inc.
4323 2536 1106 394 Time Warner Telecom
1785 1789 681 132 AppliedTheory Corporation
18566 1606 331 195 Covad Communications
6478 1596 304 47 AT&T Worldnet Services
20115 1586 1554 641 Charter Communications
19262 1491 4935 304 Verizon Global Networks
7018 1360 6770 888 AT&T WorldNet Services
11492 1314 240 15 Cable One
22773 1291 2865 83 Cox Communications, Inc.
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 1008 796 166 KPNQwest Backbone AS
9116 544 326 31 Goldenlines main autonomous s
6830 516 1780 319 UPC Distribution Services
3292 509 2013 392 TDC Tele Danmark
34984 484 97 186 Tellcom Iletisim Hizmetleri
20940 452 128 341 Akamai Technologies European
8866 447 134 26 Bulgarian Telecommunication C
8402 416 320 32 Corbina telecom
9198 415 267 15 Kazakhtelecom Corporate Sales
3320 412 7604 358 Deutsche Telekom AG
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 1405 262 152 TVCABLE BOGOTA
28573 1264 971 84 Types of queries are: POCs, o
8151 1254 2662 373 Uninet S.A. de C.V.
6503 1119 354 73 AVANTEL, S.A.
7303 924 465 148 Telecom Argentina Stet-France
14420 642 52 91 Types of queries are: POCs, o
22047 567 310 15 Types of queries are: POCs, o
3816 515 225 101 COLOMBIA TELECOMUNICACIONES S
11172 487 99 80 Alestra
27947 487 53 52 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 853 445 11 TEDATA
24863 775 147 39 LINKdotNET AS number
15475 428 90 8 Nile Online
36992 292 271 14 Etisalat MISR
3741 266 985 227 The Internet Solution
24835 232 78 10 RAYA Telecom - Egypt
6713 231 215 12 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
29571 191 17 11 Ci Telecom Autonomous system
16637 151 441 87 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 3664 3838 257 bellsouth.net, inc.
4323 2536 1106 394 Time Warner Telecom
23456 2134 507 1136 >>UNKNOWN<<
4766 1875 9507 605 Korea Telecom (KIX)
1785 1789 681 132 AppliedTheory Corporation
18566 1606 331 195 Covad Communications
6478 1596 304 47 AT&T Worldnet Services
20115 1586 1554 641 Charter Communications
7545 1543 301 85 TPG Internet Pty Ltd
19262 1491 4935 304 Verizon Global Networks
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 2536 2142 Time Warner Telecom
1785 1789 1657 AppliedTheory Corporation
6478 1596 1549 AT&T Worldnet Services
7545 1543 1458 TPG Internet Pty Ltd
17974 1447 1414 PT TELEKOMUNIKASI INDONESIA
18566 1606 1411 Covad Communications
11492 1314 1299 Cable One
4766 1875 1270 Korea Telecom (KIX)
4755 1436 1269 Videsh Sanchar Nigam Ltd. Aut
10620 1405 1253 TVCABLE BOGOTA
Complete listing at http://thyme.rand.apnic.net/rviews/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
44559 UNALLOCATED 2.56.0.0/16 29632 The NetAssist autono
44559 UNALLOCATED 2.57.0.0/16 29632 The NetAssist autono
44559 UNALLOCATED 2.58.0.0/16 29632 The NetAssist autono
44559 UNALLOCATED 2.59.0.0/16 29632 The NetAssist autono
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
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
1.3.0.0/16 38639 NTT Communications Corporatio
2.56.0.0/16 44559 >>UNKNOWN<<
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
31.171.240.0/20 50837 CLOUDSIGMA AG
41.57.192.0/18 22750 BCSNET
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 /8:19 /9:11 /10:26 /11:75 /12:219
/13:447 /14:774 /15:1403 /16:11681 /17:5953 /18:9733
/19:19589 /20:25528 /21:25684 /22:34054 /23:32722 /24:185569
/25:375 /26:353 /27:175 /28:207 /29:201 /30:657
/31:57 /32:622
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2258 3664 bellsouth.net, inc.
18566 1585 1606 Covad Communications
6478 1550 1596 AT&T Worldnet Services
4323 1357 2536 Time Warner Telecom
10620 1295 1405 TVCABLE BOGOTA
11492 1263 1314 Cable One
23456 1121 2134 >>UNKNOWN<<
7011 1064 1164 Citizens Utilities
1785 1056 1789 AppliedTheory Corporation
6503 902 1119 AVANTEL, S.A.
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:297 2:78 4:18 5:1 8:349 12:2012
13:1 14:430 15:15 16:3 17:8 20:9
23:5 24:1605 27:709 31:53 32:126 33:1
34:2 37:1 38:750 39:1 40:101 41:2371
42:1 44:3 46:789 47:4 49:148 50:141
52:13 55:4 56:2 57:40 58:837 59:488
60:387 61:1161 62:1021 63:1931 64:3895 65:2338
66:4342 67:1834 68:1253 69:3043 70:746 71:349
72:1932 73:3 74:2385 75:299 76:344 77:891
78:708 79:466 80:1094 81:830 82:523 83:475
84:666 85:1058 86:606 87:796 88:347 89:1624
90:176 91:3654 92:509 93:1057 94:1270 95:804
96:459 97:253 98:825 99:35 101:49 106:1
107:4 108:80 109:941 110:520 111:680 112:325
113:382 114:516 115:683 116:948 117:669 118:763
119:1127 120:287 121:712 122:1615 123:1048 124:1274
125:1250 128:266 129:177 130:172 131:567 132:109
133:20 134:218 135:49 136:213 137:142 138:302
139:117 140:487 141:173 142:381 143:386 144:479
145:52 146:443 147:213 148:636 149:263 150:167
151:187 152:298 153:180 154:3 155:389 156:187
157:355 158:131 159:381 160:317 161:241 162:277
163:165 164:490 165:367 166:504 167:413 168:721
169:155 170:775 171:74 172:2 173:1280 174:535
175:347 177:70 178:812 180:796 181:4 182:417
183:200 184:319 185:1 186:1122 187:916 188:933
189:1038 190:4807 192:5804 193:4827 194:3515 195:3090
196:1206 197:16 198:3604 199:3888 200:5566 201:1498
202:8369 203:8440 204:4126 205:2324 206:2671 207:3026
208:3922 209:3510 210:2725 211:1368 212:2023 213:1768
214:731 215:65 216:4879 217:1636 218:563 219:375
220:1199 221:481 222:318 223:116
End of report
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