Routing Table Report 00:00 GMT Fri 13 May, 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: 361206
Prefixes after maximum aggregation: 162964
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 175892
Total ASes present in the Internet Routing Table: 37566
Prefixes per ASN: 9.62
Origin-only ASes present in the Internet Routing Table: 31439
Origin ASes announcing only one prefix: 15050
Transit ASes present in the Internet Routing Table: 5055
Transit-only ASes present in the Internet Routing Table: 123
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 26
Max AS path prepend of ASN (36992) 22
Prefixes from unregistered ASNs in the Routing Table: 3168
Unregistered ASNs in the Routing Table: 343
Number of 32-bit ASNs allocated by the RIRs: 1344
Number of 32-bit ASNs visible in the Routing Table: 1072
Prefixes from 32-bit ASNs in the Routing Table: 2424
Special use prefixes present in the Routing Table: 78
Prefixes being announced from unallocated address space: 155
Number of addresses announced to Internet: 2426538599
Equivalent to 144 /8s, 162 /16s and 10 /24s
Percentage of available address space announced: 65.5
Percentage of allocated address space announced: 65.5
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.7
Total number of prefixes smaller than registry allocations: 149674
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87394
Total APNIC prefixes after maximum aggregation: 28853
APNIC Deaggregation factor: 3.03
Prefixes being announced from the APNIC address blocks: 83831
Unique aggregates announced from the APNIC address blocks: 36569
APNIC Region origin ASes present in the Internet Routing Table: 4427
APNIC Prefixes per ASN: 18.94
APNIC Region origin ASes announcing only one prefix: 1246
APNIC Region transit ASes present in the Internet Routing Table: 693
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 21
Number of APNIC region 32-bit ASNs visible in the Routing Table: 47
Number of APNIC addresses announced to Internet: 614368449
Equivalent to 36 /8s, 158 /16s and 132 /24s
Percentage of available APNIC address space announced: 77.9
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: 143135
Total ARIN prefixes after maximum aggregation: 73511
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 115056
Unique aggregates announced from the ARIN address blocks: 45386
ARIN Region origin ASes present in the Internet Routing Table: 14384
ARIN Prefixes per ASN: 8.00
ARIN Region origin ASes announcing only one prefix: 5482
ARIN Region transit ASes present in the Internet Routing Table: 1455
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 23
Number of ARIN region 32-bit ASNs visible in the Routing Table: 12
Number of ARIN addresses announced to Internet: 799990552
Equivalent to 47 /8s, 174 /16s and 227 /24s
Percentage of available ARIN address space announced: 63.6
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: 87437
Total RIPE prefixes after maximum aggregation: 48447
RIPE Deaggregation factor: 1.80
Prefixes being announced from the RIPE address blocks: 80127
Unique aggregates announced from the RIPE address blocks: 51130
RIPE Region origin ASes present in the Internet Routing Table: 15613
RIPE Prefixes per ASN: 5.13
RIPE Region origin ASes announcing only one prefix: 7756
RIPE Region transit ASes present in the Internet Routing Table: 2474
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 23
Number of RIPE region 32-bit ASNs visible in the Routing Table: 793
Number of RIPE addresses announced to Internet: 469311980
Equivalent to 27 /8s, 249 /16s and 33 /24s
Percentage of available RIPE address space announced: 75.6
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: 32681
Total LACNIC prefixes after maximum aggregation: 7548
LACNIC Deaggregation factor: 4.33
Prefixes being announced from the LACNIC address blocks: 31722
Unique aggregates announced from the LACNIC address blocks: 16570
LACNIC Region origin ASes present in the Internet Routing Table: 1446
LACNIC Prefixes per ASN: 21.94
LACNIC Region origin ASes announcing only one prefix: 429
LACNIC Region transit ASes present in the Internet Routing Table: 265
Average LACNIC Region AS path length visible: 4.6
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 215
Number of LACNIC addresses announced to Internet: 83283976
Equivalent to 4 /8s, 246 /16s and 208 /24s
Percentage of available LACNIC address space announced: 55.2
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: 7829
Total AfriNIC prefixes after maximum aggregation: 1879
AfriNIC Deaggregation factor: 4.17
Prefixes being announced from the AfriNIC address blocks: 6160
Unique aggregates announced from the AfriNIC address blocks: 1953
AfriNIC Region origin ASes present in the Internet Routing Table: 450
AfriNIC Prefixes per ASN: 13.69
AfriNIC Region origin ASes announcing only one prefix: 137
AfriNIC Region transit ASes present in the Internet Routing Table: 99
Average AfriNIC Region AS path length visible: 4.5
Max AfriNIC Region AS path length visible: 26
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23117824
Equivalent to 1 /8s, 96 /16s and 192 /24s
Percentage of available AfriNIC address space announced: 34.4
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 1892 9501 613 Korea Telecom (KIX)
17974 1824 508 33 PT TELEKOMUNIKASI INDONESIA
7545 1548 301 86 TPG Internet Pty Ltd
4755 1458 374 164 Videsh Sanchar Nigam Ltd. Aut
24560 1151 336 184 Bharti Airtel Ltd.
7552 1106 1064 7 Vietel Corporation
9583 1079 80 510 Sify Limited
9829 1039 874 51 BSNL National Internet Backbo
4808 958 2023 278 CNCGROUP IP network: China169
17488 958 165 100 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 3646 3822 256 bellsouth.net, inc.
4323 1975 1097 396 Time Warner Telecom
18566 1822 357 232 Covad Communications
1785 1777 681 124 AppliedTheory Corporation
6478 1677 313 49 AT&T Worldnet Services
20115 1585 1542 630 Charter Communications
19262 1480 4901 325 Verizon Global Networks
7018 1361 6943 890 AT&T WorldNet Services
22773 1329 2897 87 Cox Communications, Inc.
11492 1277 240 15 Cable One
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 1028 798 176 KPNQwest Backbone AS
9116 540 326 30 Goldenlines main autonomous s
6830 519 1780 320 UPC Distribution Services
3292 517 1998 392 TDC Tele Danmark
34984 511 106 183 Tellcom Iletisim Hizmetleri
20940 453 132 346 Akamai Technologies European
8866 443 134 26 Bulgarian Telecommunication C
29049 442 32 44 AzerSat LLC.
8402 426 320 32 Corbina telecom
12479 425 577 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 1467 270 155 TVCABLE BOGOTA
8151 1372 2683 360 Uninet S.A. de C.V.
28573 1315 990 86 Types of queries are: POCs, o
7303 930 470 151 Telecom Argentina Stet-France
6503 732 354 74 AVANTEL, S.A.
14420 564 47 113 Types of queries are: POCs, o
22047 555 310 15 Types of queries are: POCs, o
3816 522 227 99 COLOMBIA TELECOMUNICACIONES S
11172 497 100 85 Alestra
13489 496 238 120 Orbitel S.A. E.S.P.
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 888 445 11 TEDATA
24863 783 147 38 LINKdotNET AS number
15475 416 90 8 Nile Online
36992 288 331 17 Etisalat MISR
3741 269 986 229 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
24835 207 78 10 RAYA Telecom - Egypt
33776 200 12 11 Starcomms Nigeria Limited
29571 162 17 11 Ci Telecom Autonomous system
16637 152 441 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 3646 3822 256 bellsouth.net, inc.
23456 2424 684 1316 >>UNKNOWN<<
4323 1975 1097 396 Time Warner Telecom
4766 1892 9501 613 Korea Telecom (KIX)
17974 1824 508 33 PT TELEKOMUNIKASI INDONESIA
18566 1822 357 232 Covad Communications
1785 1777 681 124 AppliedTheory Corporation
6478 1677 313 49 AT&T Worldnet Services
20115 1585 1542 630 Charter Communications
7545 1548 301 86 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
17974 1824 1791 PT TELEKOMUNIKASI INDONESIA
1785 1777 1653 AppliedTheory Corporation
6478 1677 1628 AT&T Worldnet Services
18566 1822 1590 Covad Communications
4323 1975 1579 Time Warner Telecom
7545 1548 1462 TPG Internet Pty Ltd
10620 1467 1312 TVCABLE BOGOTA
4755 1458 1294 Videsh Sanchar Nigam Ltd. Aut
4766 1892 1279 Korea Telecom (KIX)
11492 1277 1262 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 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
23502 UNALLOCATED 12.44.44.0/24 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
31.220.136.0/21 31078 Netsign GmbH
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
45.127.0.0/16 13767 NetworkTwo Communications Gro
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 /11:79 /12:223
/13:459 /14:799 /15:1426 /16:11874 /17:6021 /18:10007
/19:19825 /20:26273 /21:26250 /22:34487 /23:33406 /24:187367
/25:372 /26:344 /27:167 /28:283 /29:176 /30:610
/31:65 /32:632
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2245 3646 bellsouth.net, inc.
18566 1784 1822 Covad Communications
6478 1631 1677 AT&T Worldnet Services
10620 1357 1467 TVCABLE BOGOTA
11492 1223 1277 Cable One
23456 1191 2424 >>UNKNOWN<<
7011 1062 1162 Citizens Utilities
1785 1050 1777 AppliedTheory Corporation
286 888 1028 KPNQwest Backbone AS
4323 885 1975 Time Warner Telecom
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:263 2:74 4:18 5:1 6:3 8:354
12:1987 13:1 14:453 15:15 16:3 17:8
20:10 23:7 24:1652 27:747 31:329 32:126
33:3 34:2 37:1 38:765 40:101 41:2490
42:5 44:3 46:905 47:4 49:177 50:400
52:13 55:5 56:2 57:40 58:851 59:487
60:387 61:1256 62:993 63:1940 64:3949 65:2300
66:4166 67:1902 68:1271 69:3091 70:743 71:356
72:1916 73:3 74:2399 75:322 76:350 77:908
78:692 79:482 80:1107 81:824 82:508 83:460
84:645 85:1085 86:615 87:777 88:332 89:1614
90:200 91:3743 92:511 93:1083 94:1285 95:821
96:483 97:246 98:849 99:35 101:59 103:12
106:1 107:6 108:85 109:949 110:583 111:710
112:319 113:398 114:535 115:665 116:963 117:683
118:817 119:1131 120:309 121:681 122:1620 123:1078
124:1255 125:1221 128:260 129:169 130:165 131:570
132:110 133:19 134:219 135:49 136:214 137:143
138:305 139:125 140:479 141:240 142:404 143:402
144:488 145:53 146:441 147:217 148:594 149:243
150:171 151:187 152:312 153:179 154:3 155:395
156:194 157:353 158:131 159:387 160:317 161:207
162:279 163:163 164:499 165:370 166:514 167:431
168:725 169:154 170:793 171:76 172:1 173:1578
174:547 175:370 177:119 178:911 180:834 181:16
182:438 183:203 184:342 185:1 186:1155 187:750
188:847 189:904 190:4713 192:5829 193:4869 194:3531
195:3112 196:1223 197:17 198:3606 199:3901 200:5522
201:1511 202:8352 203:8480 204:4149 205:2328 206:2747
207:2916 208:3979 209:3436 210:2731 211:1418 212:2036
213:1778 214:721 215:70 216:4833 217:1640 218:570
219:372 220:1206 221:485 222:342 223:145
End of report
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