Routing Table Report 00:00 GMT Fri 22 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: 359966
Prefixes after maximum aggregation: 162008
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 175048
Total ASes present in the Internet Routing Table: 37391
Prefixes per ASN: 9.63
Origin-only ASes present in the Internet Routing Table: 31341
Origin ASes announcing only one prefix: 15023
Transit ASes present in the Internet Routing Table: 5032
Transit-only ASes present in the Internet Routing Table: 126
Average AS path length visible in the Internet Routing Table: 4.1
Max AS path length visible: 31
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 2955
Unregistered ASNs in the Routing Table: 288
Number of 32-bit ASNs allocated by the RIRs: 1310
Number of 32-bit ASNs visible in the Routing Table: 1018
Prefixes from 32-bit ASNs in the Routing Table: 2291
Special use prefixes present in the Routing Table: 76
Prefixes being announced from unallocated address space: 160
Number of addresses announced to Internet: 2418349177
Equivalent to 144 /8s, 37 /16s and 20 /24s
Percentage of available address space announced: 65.2
Percentage of allocated address space announced: 65.2
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: 149341
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 86750
Total APNIC prefixes after maximum aggregation: 28850
APNIC Deaggregation factor: 3.01
Prefixes being announced from the APNIC address blocks: 83343
Unique aggregates announced from the APNIC address blocks: 36873
APNIC Region origin ASes present in the Internet Routing Table: 4397
APNIC Prefixes per ASN: 18.95
APNIC Region origin ASes announcing only one prefix: 1231
APNIC Region transit ASes present in the Internet Routing Table: 695
Average APNIC Region AS path length visible: 4.3
Max APNIC Region AS path length visible: 19
Number of APNIC region 32-bit ASNs visible in the Routing Table: 48
Number of APNIC addresses announced to Internet: 610630081
Equivalent to 36 /8s, 101 /16s and 121 /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: 143028
Total ARIN prefixes after maximum aggregation: 73149
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 115103
Unique aggregates announced from the ARIN address blocks: 45089
ARIN Region origin ASes present in the Internet Routing Table: 14351
ARIN Prefixes per ASN: 8.02
ARIN Region origin ASes announcing only one prefix: 5465
ARIN Region transit ASes present in the Internet Routing Table: 1479
Average ARIN Region AS path length visible: 3.7
Max ARIN Region AS path length visible: 25
Number of ARIN region 32-bit ASNs visible in the Routing Table: 11
Number of ARIN addresses announced to Internet: 798669080
Equivalent to 47 /8s, 154 /16s and 185 /24s
Percentage of available ARIN address space announced: 63.5
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: 87227
Total RIPE prefixes after maximum aggregation: 48135
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 79573
Unique aggregates announced from the RIPE address blocks: 50590
RIPE Region origin ASes present in the Internet Routing Table: 15564
RIPE Prefixes per ASN: 5.11
RIPE Region origin ASes announcing only one prefix: 7759
RIPE Region transit ASes present in the Internet Routing Table: 2429
Average RIPE Region AS path length visible: 4.4
Max RIPE Region AS path length visible: 29
Number of RIPE region 32-bit ASNs visible in the Routing Table: 756
Number of RIPE addresses announced to Internet: 467073148
Equivalent to 27 /8s, 214 /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: 32678
Total LACNIC prefixes after maximum aggregation: 7465
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 31693
Unique aggregates announced from the LACNIC address blocks: 16487
LACNIC Region origin ASes present in the Internet Routing Table: 1441
LACNIC Prefixes per ASN: 21.99
LACNIC Region origin ASes announcing only one prefix: 433
LACNIC Region transit ASes present in the Internet Routing Table: 262
Average LACNIC Region AS path length visible: 4.5
Max LACNIC Region AS path length visible: 29
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 198
Number of LACNIC addresses announced to Internet: 82684300
Equivalent to 4 /8s, 237 /16s and 169 /24s
Percentage of available LACNIC address space announced: 54.8
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: 7693
Total AfriNIC prefixes after maximum aggregation: 1832
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 6074
Unique aggregates announced from the AfriNIC address blocks: 1883
AfriNIC Region origin ASes present in the Internet Routing Table: 440
AfriNIC Prefixes per ASN: 13.80
AfriNIC Region origin ASes announcing only one prefix: 135
AfriNIC Region transit ASes present in the Internet Routing Table: 96
Average AfriNIC Region AS path length visible: 4.4
Max AfriNIC Region AS path length visible: 31
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23306752
Equivalent to 1 /8s, 99 /16s and 162 /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 1874 9507 606 Korea Telecom (KIX)
17974 1823 515 29 PT TELEKOMUNIKASI INDONESIA
4755 1449 374 164 Videsh Sanchar Nigam Ltd. Aut
7545 1439 300 80 TPG Internet Pty Ltd
7552 1194 1064 7 Vietel Corporation
24560 1138 322 203 Bharti Airtel Ltd.
9583 1056 77 494 Sify Limited
4808 1014 2074 288 CNCGROUP IP network: China169
9829 1008 870 50 BSNL National Internet Backbo
17488 957 164 98 Hathway IP Over Cable Interne
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 3654 3822 255 bellsouth.net, inc.
4323 2634 1099 396 Time Warner Telecom
1785 1790 681 129 AppliedTheory Corporation
18566 1760 349 229 Covad Communications
6478 1635 308 42 AT&T Worldnet Services
20115 1585 1556 638 Charter Communications
19262 1496 4949 299 Verizon Global Networks
7018 1366 6945 894 AT&T WorldNet Services
22773 1298 2865 84 Cox Communications, Inc.
2386 1270 536 912 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 1021 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 466 33 37 AzerSat LLC.
8866 447 134 26 Bulgarian Telecommunication C
20940 444 130 338 Akamai Technologies European
3320 423 7609 368 Deutsche Telekom AG
12479 408 577 6 Uni2 Autonomous System
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 1437 268 160 TVCABLE BOGOTA
8151 1354 2669 365 Uninet S.A. de C.V.
28573 1282 988 87 Types of queries are: POCs, o
7303 927 467 149 Telecom Argentina Stet-France
6503 908 354 73 AVANTEL, S.A.
14420 663 53 91 Types of queries are: POCs, o
22047 565 310 15 Types of queries are: POCs, o
3816 518 225 97 COLOMBIA TELECOMUNICACIONES S
27947 493 54 48 Telconet S.A
14117 492 46 43 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 838 445 11 TEDATA
24863 779 147 40 LINKdotNET AS number
15475 424 90 8 Nile Online
36992 297 415 13 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 238 215 13 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
24835 216 78 10 RAYA Telecom - Egypt
29571 161 17 11 Ci Telecom Autonomous system
16637 150 441 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 3654 3822 255 bellsouth.net, inc.
4323 2634 1099 396 Time Warner Telecom
23456 2291 653 1240 >>UNKNOWN<<
4766 1874 9507 606 Korea Telecom (KIX)
17974 1823 515 29 PT TELEKOMUNIKASI INDONESIA
1785 1790 681 129 AppliedTheory Corporation
18566 1760 349 229 Covad Communications
6478 1635 308 42 AT&T Worldnet Services
20115 1585 1556 638 Charter Communications
19262 1496 4949 299 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 2634 2238 Time Warner Telecom
17974 1823 1794 PT TELEKOMUNIKASI INDONESIA
1785 1790 1661 AppliedTheory Corporation
6478 1635 1593 AT&T Worldnet Services
18566 1760 1531 Covad Communications
7545 1439 1359 TPG Internet Pty Ltd
4755 1449 1285 Videsh Sanchar Nigam Ltd. Aut
10620 1437 1277 TVCABLE BOGOTA
4766 1874 1268 Korea Telecom (KIX)
11492 1257 1242 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
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.14.170.0/24 4323 Time Warner Telecom
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
13317 UNALLOCATED 12.44.10.0/24 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
31.15.128.0/17 12644 Telemach Autonomous System
31.192.112.0/20 30361 Swiftwill Solutions
31.192.128.0/19 31214 TIS-DIALOG Autonomous system
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 /8:20 /9:12 /10:28 /11:78 /12:221
/13:458 /14:789 /15:1407 /16:11779 /17:5991 /18:9910
/19:19694 /20:26260 /21:26008 /22:34132 /23:33124 /24:187405
/25:367 /26:356 /27:166 /28:268 /29:181 /30:620
/31:61 /32:631
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2255 3654 bellsouth.net, inc.
18566 1728 1760 Covad Communications
6478 1589 1635 AT&T Worldnet Services
4323 1342 2634 Time Warner Telecom
10620 1327 1437 TVCABLE BOGOTA
11492 1206 1257 Cable One
23456 1152 2291 >>UNKNOWN<<
7011 1062 1161 Citizens Utilities
1785 1059 1790 AppliedTheory Corporation
286 881 1021 KPNQwest Backbone AS
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:262 2:46 4:18 5:1 6:1 8:348
12:2013 13:1 14:434 15:15 16:3 17:8
20:9 23:5 24:1625 27:726 31:223 32:126
33:3 34:2 37:1 38:765 40:101 41:2405
42:1 44:3 46:868 47:4 49:177 50:365
52:13 55:4 56:2 57:40 58:847 59:478
60:356 61:1268 62:1001 63:1933 64:3954 65:2328
66:4377 67:1880 68:1258 69:3080 70:745 71:350
72:1940 73:3 74:2411 75:311 76:344 77:885
78:686 79:473 80:1108 81:837 82:517 83:463
84:666 85:1096 86:613 87:788 88:337 89:1627
90:183 91:3713 92:518 93:1076 94:1291 95:788
96:462 97:251 98:827 99:35 101:64 103:5
106:1 107:5 108:84 109:944 110:556 111:695
112:327 113:392 114:528 115:684 116:962 117:672
118:806 119:1145 120:301 121:676 122:1627 123:1070
124:1250 125:1272 128:266 129:167 130:172 131:566
132:113 133:19 134:219 135:49 136:214 137:143
138:302 139:116 140:474 141:174 142:401 143:398
144:483 145:52 146:438 147:216 148:580 149:233
150:171 151:187 152:307 153:180 154:3 155:395
156:191 157:354 158:132 159:382 160:316 161:243
162:277 163:165 164:489 165:368 166:512 167:426
168:719 169:154 170:783 171:77 172:1 173:1516
174:535 175:359 177:79 178:871 180:819 181:9
182:432 183:200 184:333 185:1 186:1140 187:813
188:991 189:1000 190:4848 192:5826 193:4854 194:3516
195:3105 196:1188 197:16 198:3582 199:3926 200:5530
201:1512 202:8349 203:8454 204:4140 205:2333 206:2764
207:3034 208:3986 209:3522 210:2734 211:1384 212:2028
213:1770 214:741 215:67 216:4905 217:1669 218:567
219:375 220:1198 221:485 222:341 223:143
End of report
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