Routing Table Report 00:00 GMT Tue 10 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: 361183
Prefixes after maximum aggregation: 162695
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 175941
Total ASes present in the Internet Routing Table: 37515
Prefixes per ASN: 9.63
Origin-only ASes present in the Internet Routing Table: 31405
Origin ASes announcing only one prefix: 15059
Transit ASes present in the Internet Routing Table: 5049
Transit-only ASes present in the Internet Routing Table: 124
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: 3143
Unregistered ASNs in the Routing Table: 333
Number of 32-bit ASNs allocated by the RIRs: 1337
Number of 32-bit ASNs visible in the Routing Table: 1061
Prefixes from 32-bit ASNs in the Routing Table: 2405
Special use prefixes present in the Routing Table: 78
Prefixes being announced from unallocated address space: 153
Number of addresses announced to Internet: 2424687211
Equivalent to 144 /8s, 133 /16s and 202 /24s
Percentage of available address space announced: 65.4
Percentage of allocated address space announced: 65.4
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: 149726
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87258
Total APNIC prefixes after maximum aggregation: 28854
APNIC Deaggregation factor: 3.02
Prefixes being announced from the APNIC address blocks: 83757
Unique aggregates announced from the APNIC address blocks: 36866
APNIC Region origin ASes present in the Internet Routing Table: 4418
APNIC Prefixes per ASN: 18.96
APNIC Region origin ASes announcing only one prefix: 1243
APNIC Region transit ASes present in the Internet Routing Table: 698
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 21
Number of APNIC region 32-bit ASNs visible in the Routing Table: 48
Number of APNIC addresses announced to Internet: 613522369
Equivalent to 36 /8s, 145 /16s and 155 /24s
Percentage of available APNIC address space announced: 77.8
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: 143550
Total ARIN prefixes after maximum aggregation: 73411
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 115510
Unique aggregates announced from the ARIN address blocks: 45292
ARIN Region origin ASes present in the Internet Routing Table: 14379
ARIN Prefixes per ASN: 8.03
ARIN Region origin ASes announcing only one prefix: 5488
ARIN Region transit ASes present in the Internet Routing Table: 1456
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: 800096024
Equivalent to 47 /8s, 176 /16s and 127 /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: 87240
Total RIPE prefixes after maximum aggregation: 48362
RIPE Deaggregation factor: 1.80
Prefixes being announced from the RIPE address blocks: 79916
Unique aggregates announced from the RIPE address blocks: 50986
RIPE Region origin ASes present in the Internet Routing Table: 15594
RIPE Prefixes per ASN: 5.12
RIPE Region origin ASes announcing only one prefix: 7759
RIPE Region transit ASes present in the Internet Routing Table: 2463
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: 788
Number of RIPE addresses announced to Internet: 468587244
Equivalent to 27 /8s, 238 /16s and 18 /24s
Percentage of available RIPE address space announced: 75.5
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: 32806
Total LACNIC prefixes after maximum aggregation: 7525
LACNIC Deaggregation factor: 4.36
Prefixes being announced from the LACNIC address blocks: 31847
Unique aggregates announced from the LACNIC address blocks: 16644
LACNIC Region origin ASes present in the Internet Routing Table: 1448
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: 263
Average LACNIC Region AS path length visible: 4.6
Max LACNIC Region AS path length visible: 20
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 209
Number of LACNIC addresses announced to Internet: 83304460
Equivalent to 4 /8s, 247 /16s and 32 /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: 7608
Total AfriNIC prefixes after maximum aggregation: 1845
AfriNIC Deaggregation factor: 4.12
Prefixes being announced from the AfriNIC address blocks: 5952
Unique aggregates announced from the AfriNIC address blocks: 1894
AfriNIC Region origin ASes present in the Internet Routing Table: 440
AfriNIC Prefixes per ASN: 13.53
AfriNIC Region origin ASes announcing only one prefix: 136
AfriNIC Region transit ASes present in the Internet Routing Table: 96
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: 4
Number of AfriNIC addresses announced to Internet: 23063296
Equivalent to 1 /8s, 95 /16s and 235 /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 1891 9501 613 Korea Telecom (KIX)
17974 1808 507 30 PT TELEKOMUNIKASI INDONESIA
7545 1567 301 86 TPG Internet Pty Ltd
4755 1458 374 164 Videsh Sanchar Nigam Ltd. Aut
24560 1151 336 184 Bharti Airtel Ltd.
7552 1110 1064 7 Vietel Corporation
9583 1079 80 510 Sify Limited
9829 1033 872 57 BSNL National Internet Backbo
4808 957 2023 277 CNCGROUP IP network: China169
17488 953 164 100 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 255 bellsouth.net, inc.
4323 2557 1104 399 Time Warner Telecom
1785 1788 681 127 AppliedTheory Corporation
18566 1782 354 219 Covad Communications
6478 1668 313 51 AT&T Worldnet Services
20115 1581 1539 636 Charter Communications
19262 1497 4949 299 Verizon Global Networks
7018 1362 6943 890 AT&T WorldNet Services
22773 1330 2897 87 Cox Communications, Inc.
11492 1280 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 516 1997 391 TDC Tele Danmark
34984 510 106 182 Tellcom Iletisim Hizmetleri
20940 451 132 345 Akamai Technologies European
8866 445 134 26 Bulgarian Telecommunication C
29049 443 33 43 AzerSat LLC.
3320 422 7609 367 Deutsche Telekom AG
12479 415 577 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 2681 362 Uninet S.A. de C.V.
28573 1297 990 89 Types of queries are: POCs, o
7303 929 470 150 Telecom Argentina Stet-France
6503 735 354 74 AVANTEL, S.A.
14420 665 53 91 Types of queries are: POCs, o
22047 556 310 15 Types of queries are: POCs, o
3816 519 226 98 COLOMBIA TELECOMUNICACIONES S
11172 497 100 85 Alestra
14117 492 47 44 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 882 445 11 TEDATA
24863 783 147 38 LINKdotNET AS number
15475 429 90 8 Nile Online
36992 288 331 17 Etisalat MISR
3741 268 985 228 The Internet Solution
6713 240 215 13 Itissalat Al-MAGHRIB
24835 207 78 10 RAYA Telecom - Egypt
33776 201 12 10 Starcomms Nigeria Limited
29571 161 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 255 bellsouth.net, inc.
4323 2557 1104 399 Time Warner Telecom
23456 2405 677 1302 >>UNKNOWN<<
4766 1891 9501 613 Korea Telecom (KIX)
17974 1808 507 30 PT TELEKOMUNIKASI INDONESIA
1785 1788 681 127 AppliedTheory Corporation
18566 1782 354 219 Covad Communications
6478 1668 313 51 AT&T Worldnet Services
20115 1581 1539 636 Charter Communications
7545 1567 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
4323 2557 2158 Time Warner Telecom
17974 1808 1778 PT TELEKOMUNIKASI INDONESIA
1785 1788 1661 AppliedTheory Corporation
6478 1668 1617 AT&T Worldnet Services
18566 1782 1563 Covad Communications
7545 1567 1481 TPG Internet Pty Ltd
10620 1467 1312 TVCABLE BOGOTA
4755 1458 1294 Videsh Sanchar Nigam Ltd. Aut
4766 1891 1278 Korea Telecom (KIX)
11492 1280 1265 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
31.211.184.0/21 174 Cogent Communications
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
/13:458 /14:792 /15:1426 /16:11850 /17:6014 /18:9996
/19:19796 /20:26234 /21:26193 /22:34425 /23:33337 /24:187649
/25:377 /26:346 /27:168 /28:283 /29:178 /30:609
/31:65 /32:624
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2246 3646 bellsouth.net, inc.
18566 1744 1782 Covad Communications
6478 1622 1668 AT&T Worldnet Services
10620 1357 1467 TVCABLE BOGOTA
4323 1267 2557 Time Warner Telecom
11492 1226 1280 Cable One
23456 1189 2405 >>UNKNOWN<<
1785 1054 1788 AppliedTheory Corporation
7011 1048 1148 Citizens Utilities
286 888 1028 KPNQwest Backbone AS
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:266 2:69 4:18 5:1 6:3 8:354
12:1993 13:1 14:452 15:15 16:3 17:8
20:10 23:6 24:1649 27:742 31:305 32:126
33:3 34:2 37:1 38:766 40:101 41:2338
42:5 44:3 46:908 47:4 49:172 50:397
52:13 55:5 56:2 57:40 58:848 59:484
60:387 61:1255 62:996 63:1940 64:3952 65:2307
66:4331 67:1901 68:1259 69:3080 70:746 71:352
72:1918 73:3 74:2400 75:322 76:348 77:908
78:695 79:473 80:1095 81:822 82:506 83:461
84:651 85:1087 86:611 87:773 88:332 89:1630
90:192 91:3722 92:513 93:1076 94:1285 95:817
96:483 97:255 98:845 99:35 101:70 103:9
106:1 107:6 108:85 109:946 110:586 111:710
112:318 113:399 114:530 115:660 116:962 117:682
118:817 119:1133 120:305 121:676 122:1620 123:1079
124:1255 125:1223 128:256 129:167 130:165 131:570
132:110 133:19 134:219 135:49 136:214 137:143
138:303 139:125 140:480 141:239 142:403 143:402
144:488 145:52 146:441 147:217 148:593 149:243
150:171 151:187 152:312 153:179 154:16 155:396
156:191 157:354 158:131 159:385 160:316 161:205
162:279 163:188 164:497 165:369 166:514 167:426
168:722 169:154 170:790 171:76 172:1 173:1563
174:553 175:371 177:112 178:864 180:824 181:19
182:440 183:208 184:343 185:1 186:1155 187:766
188:856 189:902 190:4856 192:5826 193:4866 194:3528
195:3104 196:1165 197:15 198:3604 199:3927 200:5534
201:1514 202:8346 203:8471 204:4151 205:2327 206:2773
207:3037 208:3985 209:3514 210:2728 211:1410 212:2007
213:1776 214:732 215:68 216:4910 217:1670 218:570
219:371 220:1208 221:485 222:342 223:146
End of report
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