Routing Table Report 00:00 GMT Tue 26 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: 360304
Prefixes after maximum aggregation: 162138
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 175353
Total ASes present in the Internet Routing Table: 37443
Prefixes per ASN: 9.62
Origin-only ASes present in the Internet Routing Table: 31391
Origin ASes announcing only one prefix: 15048
Transit ASes present in the Internet Routing Table: 5034
Transit-only ASes present in the Internet Routing Table: 128
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: 2943
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: 1018
Prefixes from 32-bit ASNs in the Routing Table: 2281
Special use prefixes present in the Routing Table: 76
Prefixes being announced from unallocated address space: 152
Number of addresses announced to Internet: 2419810937
Equivalent to 144 /8s, 59 /16s and 98 /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: 149550
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 86762
Total APNIC prefixes after maximum aggregation: 28785
APNIC Deaggregation factor: 3.01
Prefixes being announced from the APNIC address blocks: 83350
Unique aggregates announced from the APNIC address blocks: 36903
APNIC Region origin ASes present in the Internet Routing Table: 4408
APNIC Prefixes per ASN: 18.91
APNIC Region origin ASes announcing only one prefix: 1240
APNIC Region transit ASes present in the Internet Routing Table: 692
Average APNIC Region AS path length visible: 5.6
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: 610762689
Equivalent to 36 /8s, 103 /16s and 127 /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: 143111
Total ARIN prefixes after maximum aggregation: 73246
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 115160
Unique aggregates announced from the ARIN address blocks: 45163
ARIN Region origin ASes present in the Internet Routing Table: 14372
ARIN Prefixes per ASN: 8.01
ARIN Region origin ASes announcing only one prefix: 5473
ARIN Region transit ASes present in the Internet Routing Table: 1497
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: 798965016
Equivalent to 47 /8s, 159 /16s and 61 /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: 87411
Total RIPE prefixes after maximum aggregation: 48182
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 79735
Unique aggregates announced from the RIPE address blocks: 50762
RIPE Region origin ASes present in the Internet Routing Table: 15579
RIPE Prefixes per ASN: 5.12
RIPE Region origin ASes announcing only one prefix: 7774
RIPE Region transit ASes present in the Internet Routing Table: 2424
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: 756
Number of RIPE addresses announced to Internet: 467223932
Equivalent to 27 /8s, 217 /16s and 69 /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: 32744
Total LACNIC prefixes after maximum aggregation: 7496
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31726
Unique aggregates announced from the LACNIC address blocks: 16491
LACNIC Region origin ASes present in the Internet Routing Table: 1440
LACNIC Prefixes per ASN: 22.03
LACNIC Region origin ASes announcing only one prefix: 425
LACNIC Region transit ASes present in the Internet Routing Table: 262
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: 198
Number of LACNIC addresses announced to Internet: 82650764
Equivalent to 4 /8s, 237 /16s and 38 /24s
Percentage of available LACNIC address space announced: 54.7
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: 7704
Total AfriNIC prefixes after maximum aggregation: 1842
AfriNIC Deaggregation factor: 4.18
Prefixes being announced from the AfriNIC address blocks: 6080
Unique aggregates announced from the AfriNIC address blocks: 1886
AfriNIC Region origin ASes present in the Internet Routing Table: 445
AfriNIC Prefixes per ASN: 13.66
AfriNIC Region origin ASes announcing only one prefix: 136
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 region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23372288
Equivalent to 1 /8s, 100 /16s and 162 /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 1821 515 29 PT TELEKOMUNIKASI INDONESIA
4755 1451 374 164 Videsh Sanchar Nigam Ltd. Aut
7545 1438 300 79 TPG Internet Pty Ltd
7552 1195 1064 7 Vietel Corporation
24560 1151 324 186 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 933 116 138 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 3647 3822 255 bellsouth.net, inc.
4323 2645 1089 399 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 1358 6801 893 AT&T WorldNet Services
22773 1300 2865 84 Cox Communications, Inc.
2386 1269 536 911 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 509 106 182 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 1351 2685 376 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 906 354 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 517 225 98 COLOMBIA TELECOMUNICACIONES S
11172 490 100 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 869 445 11 TEDATA
24863 779 147 40 LINKdotNET AS number
15475 428 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 214 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 3647 3822 255 bellsouth.net, inc.
4323 2645 1089 399 Time Warner Telecom
23456 2281 655 1245 >>UNKNOWN<<
4766 1868 9474 600 Korea Telecom (KIX)
17974 1821 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 2645 2246 Time Warner Telecom
17974 1821 1792 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 1451 1287 Videsh Sanchar Nigam Ltd. Aut
10620 1438 1278 TVCABLE BOGOTA
4766 1868 1268 Korea Telecom (KIX)
11492 1258 1243 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
50.102.0.0/15 5650 Electric Lightwave Inc.
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
/13:459 /14:793 /15:1408 /16:11782 /17:5991 /18:9924
/19:19698 /20:26305 /21:26037 /22:34196 /23:33180 /24:187500
/25:374 /26:359 /27:167 /28:268 /29:183 /30:617
/31:61 /32:643
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2249 3647 bellsouth.net, inc.
18566 1728 1760 Covad Communications
6478 1595 1641 AT&T Worldnet Services
4323 1342 2645 Time Warner Telecom
10620 1328 1438 TVCABLE BOGOTA
11492 1207 1258 Cable One
23456 1145 2281 >>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 2:65 4:18 5:1 6:3 8:351
12:2014 13:1 14:433 15:15 16:3 17:8
20:9 23:5 24:1621 27:728 31:220 32:126
33:3 34:2 37:1 38:765 40:101 41:2397
42:3 44:3 46:871 47:4 49:177 50:366
52:13 55:3 56:2 57:40 58:847 59:481
60:357 61:1269 62:1001 63:1934 64:3958 65:2325
66:4380 67:1887 68:1257 69:3078 70:745 71:350
72:1942 73:3 74:2415 75:311 76:344 77:884
78:683 79:472 80:1111 81:838 82:510 83:471
84:667 85:1093 86:613 87:774 88:338 89:1632
90:183 91:3723 92:519 93:1070 94:1295 95:802
96:466 97:251 98:831 99:35 101:64 103:5
106:1 107:5 108:84 109:945 110:558 111:698
112:325 113:392 114:523 115:688 116:965 117:681
118:806 119:1142 120:301 121:675 122:1625 123:1069
124:1249 125:1221 128:267 129:167 130:172 131:567
132:113 133:19 134:219 135:49 136:214 137:142
138:302 139:118 140:489 141:174 142:401 143:399
144:485 145:52 146:442 147:218 148:585 149:233
150:173 151:187 152:308 153:179 154:3 155:396
156:191 157:354 158:132 159:384 160:314 161:243
162:277 163:165 164:491 165:368 166:511 167:426
168:719 169:154 170:784 171:76 172:1 173:1529
174:533 175:361 177:75 178:869 180:821 181:9
182:434 183:202 184:336 185:1 186:1141 187:819
188:993 189:1000 190:4858 192:5828 193:4850 194:3523
195:3112 196:1198 197:16 198:3583 199:3931 200:5546
201:1505 202:8369 203:8446 204:4136 205:2333 206:2767
207:3032 208:3989 209:3505 210:2723 211:1385 212:2024
213:1772 214:737 215:66 216:4903 217:1666 218:566
219:375 220:1200 221:485 222:341 223:143
End of report
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