Routing Table Report 00:00 GMT Mon 11 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: 356897
Prefixes after maximum aggregation: 161372
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 174507
Total ASes present in the Internet Routing Table: 37238
Prefixes per ASN: 9.58
Origin-only ASes present in the Internet Routing Table: 31305
Origin ASes announcing only one prefix: 14981
Transit ASes present in the Internet Routing Table: 4951
Transit-only ASes present in the Internet Routing Table: 115
Average AS path length visible in the Internet Routing Table: 3.9
Max AS path length visible: 26
Max AS path prepend of ASN (32374) 19
Prefixes from unregistered ASNs in the Routing Table: 2853
Unregistered ASNs in the Routing Table: 274
Number of 32-bit ASNs allocated by the RIRs: 1281
Number of 32-bit ASNs visible in the Routing Table: 982
Prefixes from 32-bit ASNs in the Routing Table: 2187
Special use prefixes present in the Routing Table: 75
Prefixes being announced from unallocated address space: 184
Number of addresses announced to Internet: 2405897656
Equivalent to 143 /8s, 103 /16s and 21 /24s
Percentage of available address space announced: 64.9
Percentage of allocated address space announced: 64.9
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.3
Total number of prefixes smaller than registry allocations: 147618
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 85634
Total APNIC prefixes after maximum aggregation: 28784
APNIC Deaggregation factor: 2.98
Prefixes being announced from the APNIC address blocks: 82712
Unique aggregates announced from the APNIC address blocks: 36895
APNIC Region origin ASes present in the Internet Routing Table: 4379
APNIC Prefixes per ASN: 18.89
APNIC Region origin ASes announcing only one prefix: 1236
APNIC Region transit ASes present in the Internet Routing Table: 687
Average APNIC Region AS path length visible: 4.1
Max APNIC Region AS path length visible: 23
Number of APNIC region 32-bit ASNs visible in the Routing Table: 47
Number of APNIC addresses announced to Internet: 605862081
Equivalent to 36 /8s, 28 /16s and 184 /24s
Percentage of available APNIC address space announced: 76.8
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: 142049
Total ARIN prefixes after maximum aggregation: 72910
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 114251
Unique aggregates announced from the ARIN address blocks: 45082
ARIN Region origin ASes present in the Internet Routing Table: 14312
ARIN Prefixes per ASN: 7.98
ARIN Region origin ASes announcing only one prefix: 5439
ARIN Region transit ASes present in the Internet Routing Table: 1461
Average ARIN Region AS path length visible: 3.7
Max ARIN Region AS path length visible: 25
Number of ARIN region 32-bit ASNs visible in the Routing Table: 11
Number of ARIN addresses announced to Internet: 797916696
Equivalent to 47 /8s, 143 /16s and 62 /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: 86632
Total RIPE prefixes after maximum aggregation: 47918
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 79117
Unique aggregates announced from the RIPE address blocks: 50254
RIPE Region origin ASes present in the Internet Routing Table: 15516
RIPE Prefixes per ASN: 5.10
RIPE Region origin ASes announcing only one prefix: 7745
RIPE Region transit ASes present in the Internet Routing Table: 2379
Average RIPE Region AS path length visible: 3.6
Max RIPE Region AS path length visible: 26
Number of RIPE region 32-bit ASNs visible in the Routing Table: 727
Number of RIPE addresses announced to Internet: 464334268
Equivalent to 27 /8s, 173 /16s and 45 /24s
Percentage of available RIPE address space announced: 74.8
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: 32408
Total LACNIC prefixes after maximum aggregation: 7452
LACNIC Deaggregation factor: 4.35
Prefixes being announced from the LACNIC address blocks: 31410
Unique aggregates announced from the LACNIC address blocks: 16341
LACNIC Region origin ASes present in the Internet Routing Table: 1434
LACNIC Prefixes per ASN: 21.90
LACNIC Region origin ASes announcing only one prefix: 429
LACNIC Region transit ASes present in the Internet Routing Table: 262
Average LACNIC Region AS path length visible: 4.3
Max LACNIC Region AS path length visible: 18
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 192
Number of LACNIC addresses announced to Internet: 81800332
Equivalent to 4 /8s, 224 /16s and 44 /24s
Percentage of available LACNIC address space announced: 54.2
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: 7640
Total AfriNIC prefixes after maximum aggregation: 1842
AfriNIC Deaggregation factor: 4.15
Prefixes being announced from the AfriNIC address blocks: 5982
Unique aggregates announced from the AfriNIC address blocks: 1866
AfriNIC Region origin ASes present in the Internet Routing Table: 444
AfriNIC Prefixes per ASN: 13.47
AfriNIC Region origin ASes announcing only one prefix: 132
AfriNIC Region transit ASes present in the Internet Routing Table: 100
Average AfriNIC Region AS path length visible: 4.2
Max AfriNIC Region AS path length visible: 21
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 22721280
Equivalent to 1 /8s, 90 /16s and 179 /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 1876 9507 605 Korea Telecom (KIX)
7545 1543 301 83 TPG Internet Pty Ltd
17974 1449 472 34 PT TELEKOMUNIKASI INDONESIA
4755 1440 378 166 Videsh Sanchar Nigam Ltd. Aut
24560 1137 322 203 Bharti Airtel Ltd.
9583 1058 77 494 Sify Limited
9829 1006 869 51 BSNL National Internet Backbo
4808 966 2050 278 CNCGROUP IP network: China169
17488 957 162 98 Hathway IP Over Cable Interne
18101 935 116 139 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 3664 3822 255 bellsouth.net, inc.
4323 2541 1106 397 Time Warner Telecom
1785 1794 681 131 AppliedTheory Corporation
18566 1642 335 197 Covad Communications
6478 1612 306 37 AT&T Worldnet Services
20115 1587 1555 641 Charter Communications
19262 1490 4932 296 Verizon Global Networks
7018 1352 6816 879 AT&T WorldNet Services
22773 1294 2865 84 Cox Communications, Inc.
2386 1271 536 914 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 1008 796 169 KPNQwest Backbone AS
9116 541 326 30 Goldenlines main autonomous s
6830 516 1780 319 UPC Distribution Services
3292 509 2013 392 TDC Tele Danmark
34984 495 97 188 Tellcom Iletisim Hizmetleri
29049 468 34 34 AzerSat LLC.
8866 447 134 26 Bulgarian Telecommunication C
20940 446 129 341 Akamai Technologies European
3320 418 7607 364 Deutsche Telekom AG
8402 415 320 32 Corbina telecom
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 1418 263 155 TVCABLE BOGOTA
28573 1271 972 86 Types of queries are: POCs, o
8151 1241 2665 366 Uninet S.A. de C.V.
6503 960 354 73 AVANTEL, S.A.
7303 923 465 148 Telecom Argentina Stet-France
14420 645 52 89 Types of queries are: POCs, o
22047 567 310 15 Types of queries are: POCs, o
3816 518 225 97 COLOMBIA TELECOMUNICACIONES S
27947 492 54 49 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 740 146 44 LINKdotNET AS number
15475 420 90 8 Nile Online
36992 294 287 12 Etisalat MISR
3741 266 985 227 The Internet Solution
6713 231 215 12 Itissalat Al-MAGHRIB
24835 230 78 10 RAYA Telecom - Egypt
33776 212 12 8 Starcomms Nigeria Limited
29571 191 17 11 Ci Telecom Autonomous system
16637 151 441 87 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 255 bellsouth.net, inc.
4323 2541 1106 397 Time Warner Telecom
23456 2187 636 1183 >>UNKNOWN<<
4766 1876 9507 605 Korea Telecom (KIX)
1785 1794 681 131 AppliedTheory Corporation
18566 1642 335 197 Covad Communications
6478 1612 306 37 AT&T Worldnet Services
20115 1587 1555 641 Charter Communications
7545 1543 301 83 TPG Internet Pty Ltd
19262 1490 4932 296 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 2541 2144 Time Warner Telecom
1785 1794 1663 AppliedTheory Corporation
6478 1612 1575 AT&T Worldnet Services
7545 1543 1460 TPG Internet Pty Ltd
18566 1642 1445 Covad Communications
17974 1449 1415 PT TELEKOMUNIKASI INDONESIA
4755 1440 1274 Videsh Sanchar Nigam Ltd. Aut
4766 1876 1271 Korea Telecom (KIX)
10620 1418 1263 TVCABLE BOGOTA
11492 1267 1252 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
44559 UNALLOCATED 2.56.0.0/16 29632 The NetAssist autono
44559 UNALLOCATED 2.57.0.0/19 29632 The NetAssist autono
44559 UNALLOCATED 2.57.0.0/16 29632 The NetAssist autono
44559 UNALLOCATED 2.58.0.0/16 29632 The NetAssist autono
44559 UNALLOCATED 2.59.0.0/16 29632 The NetAssist autono
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 1239 Sprint
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
1.3.0.0/16 38639 NTT Communications Corporatio
2.56.0.0/16 44559 >>UNKNOWN<<
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<<
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 /8:19 /9:12 /10:26 /11:75 /12:220
/13:452 /14:776 /15:1401 /16:11697 /17:5965 /18:9752
/19:19633 /20:25674 /21:25799 /22:34002 /23:32765 /24:186035
/25:366 /26:351 /27:164 /28:175 /29:195 /30:651
/31:59 /32:633
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2261 3664 bellsouth.net, inc.
18566 1620 1642 Covad Communications
6478 1566 1612 AT&T Worldnet Services
4323 1361 2541 Time Warner Telecom
10620 1308 1418 TVCABLE BOGOTA
11492 1216 1267 Cable One
23456 1130 2187 >>UNKNOWN<<
7011 1061 1161 Citizens Utilities
1785 1057 1794 AppliedTheory Corporation
286 871 1008 KPNQwest Backbone AS
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:301 2:76 4:18 5:1 8:350 12:2005
13:1 14:433 15:15 16:3 17:8 20:9
23:5 24:1615 27:713 31:215 32:126 33:3
34:2 37:1 38:752 39:1 40:100 41:2352
42:1 44:3 46:814 47:4 49:170 50:220
52:13 55:3 56:2 57:39 58:845 59:490
60:387 61:1167 62:1012 63:1934 64:3918 65:2338
66:4335 67:1827 68:1256 69:3049 70:743 71:350
72:1934 73:3 74:2385 75:298 76:344 77:892
78:691 79:465 80:1095 81:833 82:516 83:468
84:665 85:1059 86:616 87:789 88:346 89:1617
90:178 91:3699 92:504 93:1070 94:1288 95:789
96:448 97:252 98:824 99:35 101:61 106:2
107:4 108:78 109:954 110:533 111:683 112:324
113:376 114:519 115:703 116:947 117:674 118:773
119:1130 120:289 121:716 122:1624 123:1056 124:1276
125:1258 128:266 129:170 130:173 131:565 132:101
133:20 134:218 135:49 136:213 137:142 138:302
139:115 140:486 141:175 142:378 143:391 144:478
145:53 146:442 147:215 148:588 149:263 150:168
151:187 152:302 153:180 154:3 155:393 156:189
157:355 158:132 159:380 160:317 161:243 162:277
163:164 164:489 165:368 166:510 167:418 168:723
169:153 170:778 171:74 172:1 173:1273 174:541
175:353 177:78 178:851 180:805 181:7 182:417
183:200 184:321 185:1 186:1124 187:830 188:942
189:1017 190:4832 192:5788 193:4832 194:3519 195:3093
196:1220 197:17 198:3592 199:3909 200:5556 201:1498
202:8369 203:8445 204:4131 205:2330 206:2669 207:3024
208:3945 209:3517 210:2730 211:1365 212:2019 213:1765
214:728 215:67 216:4894 217:1652 218:561 219:386
220:1195 221:481 222:312 223:119
End of report
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