Routing Table Report 00:00 GMT Mon 25 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: 360179
Prefixes after maximum aggregation: 162108
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 175271
Total ASes present in the Internet Routing Table: 37430
Prefixes per ASN: 9.62
Origin-only ASes present in the Internet Routing Table: 31368
Origin ASes announcing only one prefix: 15046
Transit ASes present in the Internet Routing Table: 5043
Transit-only ASes present in the Internet Routing Table: 129
Average AS path length visible in the Internet Routing Table: 5.1
Max AS path length visible: 33
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 2948
Unregistered ASNs in the Routing Table: 296
Number of 32-bit ASNs allocated by the RIRs: 1311
Number of 32-bit ASNs visible in the Routing Table: 1019
Prefixes from 32-bit ASNs in the Routing Table: 2277
Special use prefixes present in the Routing Table: 76
Prefixes being announced from unallocated address space: 156
Number of addresses announced to Internet: 2418828665
Equivalent to 144 /8s, 44 /16s and 101 /24s
Percentage of available address space announced: 65.3
Percentage of allocated address space announced: 65.3
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: 149433
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 86798
Total APNIC prefixes after maximum aggregation: 28827
APNIC Deaggregation factor: 3.01
Prefixes being announced from the APNIC address blocks: 83382
Unique aggregates announced from the APNIC address blocks: 36891
APNIC Region origin ASes present in the Internet Routing Table: 4406
APNIC Prefixes per ASN: 18.92
APNIC Region origin ASes announcing only one prefix: 1238
APNIC Region transit ASes present in the Internet Routing Table: 693
Average APNIC Region AS path length visible: 5.7
Max APNIC Region AS path length visible: 24
Number of APNIC region 32-bit ASNs visible in the Routing Table: 48
Number of APNIC addresses announced to Internet: 610738625
Equivalent to 36 /8s, 103 /16s and 33 /24s
Percentage of available APNIC address space announced: 77.5
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: 143052
Total ARIN prefixes after maximum aggregation: 73232
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 115140
Unique aggregates announced from the ARIN address blocks: 45144
ARIN Region origin ASes present in the Internet Routing Table: 14365
ARIN Prefixes per ASN: 8.02
ARIN Region origin ASes announcing only one prefix: 5473
ARIN Region transit ASes present in the Internet Routing Table: 1492
Average ARIN Region AS path length visible: 4.6
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: 798962712
Equivalent to 47 /8s, 159 /16s and 52 /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: 87262
Total RIPE prefixes after maximum aggregation: 48151
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 79609
Unique aggregates announced from the RIPE address blocks: 50717
RIPE Region origin ASes present in the Internet Routing Table: 15568
RIPE Prefixes per ASN: 5.11
RIPE Region origin ASes announcing only one prefix: 7769
RIPE Region transit ASes present in the Internet Routing Table: 2435
Average RIPE Region AS path length visible: 5.3
Max RIPE Region AS path length visible: 24
Number of RIPE region 32-bit ASNs visible in the Routing Table: 758
Number of RIPE addresses announced to Internet: 467132796
Equivalent to 27 /8s, 215 /16s and 225 /24s
Percentage of available RIPE address space announced: 75.3
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: 32745
Total LACNIC prefixes after maximum aggregation: 7480
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 31712
Unique aggregates announced from the LACNIC address blocks: 16492
LACNIC Region origin ASes present in the Internet Routing Table: 1444
LACNIC Prefixes per ASN: 21.96
LACNIC Region origin ASes announcing only one prefix: 431
LACNIC Region transit ASes present in the Internet Routing Table: 263
Average LACNIC Region AS path length visible: 5.3
Max LACNIC Region AS path length visible: 29
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 197
Number of LACNIC addresses announced to Internet: 82689420
Equivalent to 4 /8s, 237 /16s and 189 /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: 7744
Total AfriNIC prefixes after maximum aggregation: 1845
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 6111
Unique aggregates announced from the AfriNIC address blocks: 1897
AfriNIC Region origin ASes present in the Internet Routing Table: 446
AfriNIC Prefixes per ASN: 13.70
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: 4.8
Max AfriNIC Region AS path length visible: 33
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23372544
Equivalent to 1 /8s, 100 /16s and 163 /24s
Percentage of available AfriNIC address space announced: 34.8
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 1868 9474 600 Korea Telecom (KIX)
17974 1806 515 29 PT TELEKOMUNIKASI INDONESIA
4755 1450 374 164 Videsh Sanchar Nigam Ltd. Aut
7545 1438 300 79 TPG Internet Pty Ltd
7552 1195 1064 7 Vietel Corporation
24560 1144 323 204 Bharti Airtel Ltd.
9583 1056 77 494 Sify Limited
9829 1008 870 50 BSNL National Internet Backbo
17488 957 164 98 Hathway IP Over Cable Interne
18101 932 116 137 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 3650 3822 254 bellsouth.net, inc.
4323 2647 1090 398 Time Warner Telecom
1785 1789 681 128 AppliedTheory Corporation
18566 1760 349 229 Covad Communications
6478 1641 309 46 AT&T Worldnet Services
20115 1585 1556 638 Charter Communications
19262 1494 4933 297 Verizon Global Networks
7018 1361 6801 890 AT&T WorldNet Services
22773 1299 2865 84 Cox Communications, Inc.
2386 1269 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 541 326 30 Goldenlines main autonomous s
6830 519 1780 320 UPC Distribution Services
3292 509 1997 392 TDC Tele Danmark
34984 508 106 182 Tellcom Iletisim Hizmetleri
29049 450 33 48 AzerSat LLC.
8866 447 134 26 Bulgarian Telecommunication C
20940 444 130 338 Akamai Technologies European
3320 423 7609 368 Deutsche Telekom AG
8551 407 356 39 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 1438 268 160 TVCABLE BOGOTA
8151 1353 2688 370 Uninet S.A. de C.V.
28573 1279 988 87 Types of queries are: POCs, o
7303 927 467 149 Telecom Argentina Stet-France
6503 907 354 72 AVANTEL, S.A.
14420 663 53 91 Types of queries are: POCs, o
22047 565 310 15 Types of queries are: POCs, o
3816 516 225 98 COLOMBIA TELECOMUNICACIONES S
11172 489 100 83 Alestra
27947 488 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 864 445 11 TEDATA
24863 779 147 40 LINKdotNET AS number
15475 423 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 3650 3822 254 bellsouth.net, inc.
4323 2647 1090 398 Time Warner Telecom
23456 2277 653 1238 >>UNKNOWN<<
4766 1868 9474 600 Korea Telecom (KIX)
17974 1806 515 29 PT TELEKOMUNIKASI INDONESIA
1785 1789 681 128 AppliedTheory Corporation
18566 1760 349 229 Covad Communications
6478 1641 309 46 AT&T Worldnet Services
20115 1585 1556 638 Charter Communications
19262 1494 4933 297 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 2647 2249 Time Warner Telecom
17974 1806 1777 PT TELEKOMUNIKASI INDONESIA
1785 1789 1661 AppliedTheory Corporation
6478 1641 1595 AT&T Worldnet Services
18566 1760 1531 Covad Communications
7545 1438 1359 TPG Internet Pty Ltd
4755 1450 1286 Videsh Sanchar Nigam Ltd. Aut
10620 1438 1278 TVCABLE BOGOTA
4766 1868 1268 Korea Telecom (KIX)
11492 1256 1241 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
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
45.127.0.0/16 13767 NetworkTwo Communications Gro
62.61.220.0/24 24974 Tachyon Europe BV - Wireless
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 /14:792 /15:1407 /16:11782 /17:5991 /18:9910
/19:19690 /20:26292 /21:26029 /22:34180 /23:33156 /24:187478
/25:372 /26:356 /27:166 /28:267 /29:183 /30:616
/31:61 /32:634
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2252 3650 bellsouth.net, inc.
18566 1728 1760 Covad Communications
6478 1595 1641 AT&T Worldnet Services
4323 1344 2647 Time Warner Telecom
10620 1328 1438 TVCABLE BOGOTA
11492 1205 1256 Cable One
23456 1151 2277 >>UNKNOWN<<
7011 1062 1161 Citizens Utilities
1785 1059 1789 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 2:63 4:18 5:1 6:3 8:349
12:2014 13:1 14:440 15:15 16:3 17:8
20:9 23:5 24:1623 27:727 31:210 32:126
33:3 34:2 37:1 38:765 40:101 41:2430
42:3 44:3 46:867 47:4 49:177 50:366
52:13 55:3 56:2 57:40 58:849 59:480
60:356 61:1270 62:1003 63:1934 64:3961 65:2327
66:4380 67:1880 68:1257 69:3082 70:744 71:350
72:1942 73:3 74:2415 75:311 76:344 77:885
78:684 79:469 80:1109 81:837 82:510 83:471
84:667 85:1094 86:612 87:769 88:338 89:1630
90:183 91:3718 92:519 93:1068 94:1291 95:800
96:466 97:251 98:830 99:35 101:64 103:5
106:1 107:5 108:84 109:944 110:557 111:696
112:325 113:392 114:527 115:685 116:965 117:676
118:805 119:1137 120:301 121:676 122:1628 123:1071
124:1251 125:1271 128:266 129:163 130:172 131:565
132:113 133:19 134:219 135:49 136:214 137:142
138:302 139:118 140:486 141:174 142:401 143:398
144:486 145:52 146:442 147:218 148:584 149:233
150:173 151:187 152:307 153:179 154:3 155:396
156:190 157:354 158:132 159:384 160:316 161:243
162:277 163:165 164:489 165:367 166:511 167:426
168:719 169:153 170:784 171:77 172:1 173:1529
174:532 175:360 177:74 178:868 180:820 181:9
182:433 183:206 184:334 185:1 186:1144 187:813
188:992 189:1004 190:4849 192:5826 193:4853 194:3522
195:3113 196:1197 197:16 198:3575 199:3930 200:5546
201:1506 202:8363 203:8452 204:4141 205:2335 206:2762
207:3032 208:3989 209:3503 210:2730 211:1384 212:2000
213:1758 214:738 215:66 216:4901 217:1668 218:566
219:375 220:1198 221:485 222:341 223:143
End of report
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