Routing Table Report 00:00 GMT Mon 18 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: 358936
Prefixes after maximum aggregation: 161753
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 174751
Total ASes present in the Internet Routing Table: 37355
Prefixes per ASN: 9.61
Origin-only ASes present in the Internet Routing Table: 31367
Origin ASes announcing only one prefix: 14995
Transit ASes present in the Internet Routing Table: 4976
Transit-only ASes present in the Internet Routing Table: 124
Average AS path length visible in the Internet Routing Table: 4.1
Max AS path length visible: 26
Max AS path prepend of ASN (32374) 19
Prefixes from unregistered ASNs in the Routing Table: 2865
Unregistered ASNs in the Routing Table: 281
Number of 32-bit ASNs allocated by the RIRs: 1303
Number of 32-bit ASNs visible in the Routing Table: 1012
Prefixes from 32-bit ASNs in the Routing Table: 2218
Special use prefixes present in the Routing Table: 76
Prefixes being announced from unallocated address space: 155
Number of addresses announced to Internet: 2412916729
Equivalent to 143 /8s, 210 /16s and 47 /24s
Percentage of available address space announced: 65.1
Percentage of allocated address space announced: 65.1
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: 148754
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 86047
Total APNIC prefixes after maximum aggregation: 28778
APNIC Deaggregation factor: 2.99
Prefixes being announced from the APNIC address blocks: 83163
Unique aggregates announced from the APNIC address blocks: 36811
APNIC Region origin ASes present in the Internet Routing Table: 4393
APNIC Prefixes per ASN: 18.93
APNIC Region origin ASes announcing only one prefix: 1236
APNIC Region transit ASes present in the Internet Routing Table: 682
Average APNIC Region AS path length visible: 4.7
Max APNIC Region AS path length visible: 26
Number of APNIC region 32-bit ASNs visible in the Routing Table: 48
Number of APNIC addresses announced to Internet: 610262209
Equivalent to 36 /8s, 95 /16s and 220 /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: 142864
Total ARIN prefixes after maximum aggregation: 73091
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 114953
Unique aggregates announced from the ARIN address blocks: 45061
ARIN Region origin ASes present in the Internet Routing Table: 14339
ARIN Prefixes per ASN: 8.02
ARIN Region origin ASes announcing only one prefix: 5452
ARIN Region transit ASes present in the Internet Routing Table: 1462
Average ARIN Region AS path length visible: 3.6
Max ARIN Region AS path length visible: 22
Number of ARIN region 32-bit ASNs visible in the Routing Table: 11
Number of ARIN addresses announced to Internet: 797970968
Equivalent to 47 /8s, 144 /16s and 18 /24s
Percentage of available ARIN address space announced: 63.4
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: 87187
Total RIPE prefixes after maximum aggregation: 48081
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 79516
Unique aggregates announced from the RIPE address blocks: 50477
RIPE Region origin ASes present in the Internet Routing Table: 15548
RIPE Prefixes per ASN: 5.11
RIPE Region origin ASes announcing only one prefix: 7743
RIPE Region transit ASes present in the Internet Routing Table: 2414
Average RIPE Region AS path length visible: 4.2
Max RIPE Region AS path length visible: 22
Number of RIPE region 32-bit ASNs visible in the Routing Table: 751
Number of RIPE addresses announced to Internet: 466414332
Equivalent to 27 /8s, 204 /16s and 234 /24s
Percentage of available RIPE address space announced: 75.1
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: 32615
Total LACNIC prefixes after maximum aggregation: 7447
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 31575
Unique aggregates announced from the LACNIC address blocks: 16412
LACNIC Region origin ASes present in the Internet Routing Table: 1439
LACNIC Prefixes per ASN: 21.94
LACNIC Region origin ASes announcing only one prefix: 431
LACNIC Region transit ASes present in the Internet Routing Table: 258
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 17
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 197
Number of LACNIC addresses announced to Internet: 82110604
Equivalent to 4 /8s, 228 /16s and 232 /24s
Percentage of available LACNIC address space announced: 54.4
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: 7714
Total AfriNIC prefixes after maximum aggregation: 1834
AfriNIC Deaggregation factor: 4.21
Prefixes being announced from the AfriNIC address blocks: 6076
Unique aggregates announced from the AfriNIC address blocks: 1878
AfriNIC Region origin ASes present in the Internet Routing Table: 446
AfriNIC Prefixes per ASN: 13.62
AfriNIC Region origin ASes announcing only one prefix: 133
AfriNIC Region transit ASes present in the Internet Routing Table: 101
Average AfriNIC Region AS path length visible: 4.0
Max AfriNIC Region AS path length visible: 17
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 22762496
Equivalent to 1 /8s, 91 /16s and 84 /24s
Percentage of available AfriNIC address space announced: 33.9
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 1869 9476 598 Korea Telecom (KIX)
17974 1805 507 30 PT TELEKOMUNIKASI INDONESIA
7545 1499 301 82 TPG Internet Pty Ltd
4755 1445 638 166 Videsh Sanchar Nigam Ltd. Aut
24560 1137 322 203 Bharti Airtel Ltd.
9583 1056 77 497 Sify Limited
9829 1003 868 53 BSNL National Internet Backbo
17488 957 164 98 Hathway IP Over Cable Interne
18101 934 116 139 Reliance Infocom Ltd Internet
4808 879 1924 262 CNCGROUP IP network: China169
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 3664 3822 258 bellsouth.net, inc.
4323 2643 1106 396 Time Warner Telecom
1785 1789 681 129 AppliedTheory Corporation
18566 1760 349 229 Covad Communications
6478 1624 307 35 AT&T Worldnet Services
20115 1584 1556 639 Charter Communications
19262 1495 4933 298 Verizon Global Networks
7018 1364 6962 892 AT&T WorldNet Services
22773 1298 2865 84 Cox Communications, Inc.
2386 1271 535 914 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 1015 797 172 KPNQwest Backbone AS
9116 542 326 30 Goldenlines main autonomous s
6830 517 1780 318 UPC Distribution Services
3292 508 1997 392 TDC Tele Danmark
34984 505 98 183 Tellcom Iletisim Hizmetleri
29049 467 33 34 AzerSat LLC.
8866 447 134 26 Bulgarian Telecommunication C
20940 441 127 338 Akamai Technologies European
3320 418 7607 364 Deutsche Telekom AG
8551 405 355 38 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 1426 265 157 TVCABLE BOGOTA
8151 1358 2685 373 Uninet S.A. de C.V.
28573 1279 972 86 Types of queries are: POCs, o
7303 928 467 148 Telecom Argentina Stet-France
6503 896 354 65 AVANTEL, S.A.
14420 663 53 91 Types of queries are: POCs, o
22047 568 310 15 Types of queries are: POCs, o
3816 518 225 97 COLOMBIA TELECOMUNICACIONES S
27947 489 54 48 Telconet S.A
11172 487 99 81 Alestra
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 839 445 11 TEDATA
24863 778 147 39 LINKdotNET AS number
15475 430 90 8 Nile Online
36992 295 287 12 Etisalat MISR
3741 266 985 227 The Internet Solution
6713 235 215 13 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
24835 220 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 3664 3822 258 bellsouth.net, inc.
4323 2643 1106 396 Time Warner Telecom
23456 2218 646 1213 >>UNKNOWN<<
4766 1869 9476 598 Korea Telecom (KIX)
17974 1805 507 30 PT TELEKOMUNIKASI INDONESIA
1785 1789 681 129 AppliedTheory Corporation
18566 1760 349 229 Covad Communications
6478 1624 307 35 AT&T Worldnet Services
20115 1584 1556 639 Charter Communications
7545 1499 301 82 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 2643 2247 Time Warner Telecom
17974 1805 1775 PT TELEKOMUNIKASI INDONESIA
1785 1789 1660 AppliedTheory Corporation
6478 1624 1589 AT&T Worldnet Services
18566 1760 1531 Covad Communications
7545 1499 1417 TPG Internet Pty Ltd
4755 1445 1279 Videsh Sanchar Nigam Ltd. Aut
4766 1869 1271 Korea Telecom (KIX)
10620 1426 1269 TVCABLE BOGOTA
11492 1263 1248 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
45083 UNALLOCATED 1.45.0.0/16 4808 CNCGROUP IP network:
45083 UNALLOCATED 1.45.92.0/22 4808 CNCGROUP IP network:
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.14.170.0/24 7018 AT&T WorldNet Servic
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
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
41.57.192.0/18 22750 BCSNET
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 /8:20 /9:12 /10:28 /11:78 /12:220
/13:452 /14:780 /15:1404 /16:11719 /17:5990 /18:9771
/19:19672 /20:25831 /21:25980 /22:34070 /23:33095 /24:187085
/25:377 /26:359 /27:167 /28:283 /29:199 /30:655
/31:60 /32:629
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2260 3664 bellsouth.net, inc.
18566 1728 1760 Covad Communications
6478 1578 1624 AT&T Worldnet Services
4323 1340 2643 Time Warner Telecom
10620 1316 1426 TVCABLE BOGOTA
11492 1212 1263 Cable One
23456 1140 2218 >>UNKNOWN<<
7011 1062 1161 Citizens Utilities
1785 1058 1789 AppliedTheory Corporation
286 876 1015 KPNQwest Backbone AS
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:256 2:54 4:18 5:1 8:350 12:2011
13:1 14:437 15:15 16:3 17:8 20:9
23:5 24:1618 27:725 31:221 32:126 33:2
34:2 37:1 38:764 40:101 41:2399 42:1
44:3 46:855 47:4 49:173 50:358 52:13
55:4 56:2 57:39 58:845 59:481 60:387
61:1242 62:1017 63:1935 64:3949 65:2327 66:4374
67:1841 68:1257 69:3061 70:745 71:351 72:1942
73:3 74:2399 75:313 76:345 77:879 78:696
79:481 80:1100 81:836 82:517 83:465 84:665
85:1087 86:613 87:787 88:335 89:1620 90:181
91:3722 92:515 93:1074 94:1285 95:787 96:454
97:250 98:828 99:35 101:62 103:1 106:1
107:4 108:84 109:968 110:544 111:689 112:325
113:388 114:524 115:683 116:957 117:674 118:802
119:1132 120:289 121:677 122:1627 123:1065 124:1247
125:1265 128:266 129:166 130:171 131:566 132:113
133:20 134:219 135:49 136:214 137:142 138:302
139:115 140:486 141:174 142:401 143:393 144:484
145:53 146:442 147:215 148:594 149:233 150:170
151:187 152:306 153:180 154:3 155:394 156:190
157:355 158:132 159:382 160:316 161:244 162:277
163:164 164:486 165:368 166:513 167:427 168:724
169:155 170:781 171:75 172:1 173:1511 174:534
175:359 177:71 178:869 180:817 181:7 182:427
183:197 184:332 185:1 186:1130 187:794 188:993
189:1000 190:4839 192:5815 193:4854 194:3523 195:3110
196:1212 197:16 198:3578 199:3924 200:5525 201:1509
202:8341 203:8446 204:4124 205:2330 206:2748 207:3031
208:3975 209:3510 210:2740 211:1363 212:2037 213:1776
214:732 215:67 216:4885 217:1670 218:560 219:386
220:1201 221:477 222:341 223:137
End of report
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