Routing Table Report 00:00 GMT Tue 29 Mar, 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: 355835
Prefixes after maximum aggregation: 160958
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 173610
Total ASes present in the Internet Routing Table: 37119
Prefixes per ASN: 9.59
Origin-only ASes present in the Internet Routing Table: 31170
Origin ASes announcing only one prefix: 14942
Transit ASes present in the Internet Routing Table: 5014
Transit-only ASes present in the Internet Routing Table: 125
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 33
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 2625
Unregistered ASNs in the Routing Table: 248
Number of 32-bit ASNs allocated by the RIRs: 1239
Number of 32-bit ASNs visible in the Routing Table: 935
Prefixes from 32-bit ASNs in the Routing Table: 2037
Special use prefixes present in the Routing Table: 74
Prefixes being announced from unallocated address space: 198
Number of addresses announced to Internet: 2391900923
Equivalent to 142 /8s, 145 /16s and 130 /24s
Percentage of available address space announced: 64.5
Percentage of allocated address space announced: 64.5
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 89.8
Total number of prefixes smaller than registry allocations: 147018
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 85764
Total APNIC prefixes after maximum aggregation: 28836
APNIC Deaggregation factor: 2.97
Prefixes being announced from the APNIC address blocks: 82734
Unique aggregates announced from the APNIC address blocks: 36675
APNIC Region origin ASes present in the Internet Routing Table: 4360
APNIC Prefixes per ASN: 18.98
APNIC Region origin ASes announcing only one prefix: 1220
APNIC Region transit ASes present in the Internet Routing Table: 683
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 22
Number of APNIC region 32-bit ASNs visible in the Routing Table: 45
Number of APNIC addresses announced to Internet: 601024129
Equivalent to 35 /8s, 210 /16s and 230 /24s
Percentage of available APNIC address space announced: 76.2
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: 141604
Total ARIN prefixes after maximum aggregation: 72843
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 113773
Unique aggregates announced from the ARIN address blocks: 44848
ARIN Region origin ASes present in the Internet Routing Table: 14293
ARIN Prefixes per ASN: 7.96
ARIN Region origin ASes announcing only one prefix: 5420
ARIN Region transit ASes present in the Internet Routing Table: 1460
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: 10
Number of ARIN addresses announced to Internet: 797317656
Equivalent to 47 /8s, 134 /16s and 26 /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: 86011
Total RIPE prefixes after maximum aggregation: 47734
RIPE Deaggregation factor: 1.80
Prefixes being announced from the RIPE address blocks: 78540
Unique aggregates announced from the RIPE address blocks: 49968
RIPE Region origin ASes present in the Internet Routing Table: 15471
RIPE Prefixes per ASN: 5.08
RIPE Region origin ASes announcing only one prefix: 7737
RIPE Region transit ASes present in the Internet Routing Table: 2437
Average RIPE Region AS path length visible: 4.1
Max RIPE Region AS path length visible: 23
Number of RIPE region 32-bit ASNs visible in the Routing Table: 692
Number of RIPE addresses announced to Internet: 465409596
Equivalent to 27 /8s, 189 /16s and 150 /24s
Percentage of available RIPE address space announced: 75.0
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: 32475
Total LACNIC prefixes after maximum aggregation: 7411
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 31401
Unique aggregates announced from the LACNIC address blocks: 16262
LACNIC Region origin ASes present in the Internet Routing Table: 1440
LACNIC Prefixes per ASN: 21.81
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: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 183
Number of LACNIC addresses announced to Internet: 81544332
Equivalent to 4 /8s, 220 /16s and 68 /24s
Percentage of available LACNIC address space announced: 54.0
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: 7643
Total AfriNIC prefixes after maximum aggregation: 1825
AfriNIC Deaggregation factor: 4.19
Prefixes being announced from the AfriNIC address blocks: 5999
Unique aggregates announced from the AfriNIC address blocks: 1863
AfriNIC Region origin ASes present in the Internet Routing Table: 439
AfriNIC Prefixes per ASN: 13.67
AfriNIC Region origin ASes announcing only one prefix: 132
AfriNIC Region transit ASes present in the Internet Routing Table: 94
Average AfriNIC Region AS path length visible: 3.8
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: 22677248
Equivalent to 1 /8s, 90 /16s and 7 /24s
Percentage of available AfriNIC address space announced: 33.8
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 1856 9501 593 Korea Telecom (KIX)
7545 1553 301 84 TPG Internet Pty Ltd
4755 1478 393 157 Videsh Sanchar Nigam Ltd. Aut
17974 1453 472 34 PT TELEKOMUNIKASI INDONESIA
24560 1135 322 204 Bharti Airtel Ltd.
9583 1054 77 497 Sify Limited
9829 1004 868 53 BSNL National Internet Backbo
4808 996 2084 295 CNCGROUP IP network: China169
17488 951 162 96 Hathway IP Over Cable Interne
18101 938 116 142 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 3672 3839 259 bellsouth.net, inc.
4323 2559 1104 401 Time Warner Telecom
1785 1789 681 131 AppliedTheory Corporation
18566 1606 331 195 Covad Communications
20115 1582 1544 648 Charter Communications
6478 1572 302 37 AT&T Worldnet Services
19262 1490 4935 304 Verizon Global Networks
7018 1365 6803 891 AT&T WorldNet Services
11492 1326 240 15 Cable One
22773 1287 2865 80 Cox Communications, Inc.
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 1005 796 166 KPNQwest Backbone AS
9116 545 328 32 Goldenlines main autonomous s
6830 513 1780 315 UPC Distribution Services
3292 509 2013 392 TDC Tele Danmark
34984 455 95 205 Tellcom Iletisim Hizmetleri
8866 444 133 24 Bulgarian Telecommunication C
9198 423 267 15 Kazakhtelecom Corporate Sales
20940 418 100 322 Akamai Technologies European
3320 411 7604 358 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 1403 262 152 TVCABLE BOGOTA
28573 1250 970 83 Types of queries are: POCs, o
8151 1245 2674 368 Uninet S.A. de C.V.
6503 1196 354 73 AVANTEL, S.A.
7303 923 465 148 Telecom Argentina Stet-France
14420 638 52 91 Types of queries are: POCs, o
22047 567 310 15 Types of queries are: POCs, o
3816 517 225 97 COLOMBIA TELECOMUNICACIONES S
13489 496 217 105 Orbitel S.A. E.S.P.
11172 487 83 80 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 845 445 11 TEDATA
24863 774 147 39 LINKdotNET AS number
15475 426 90 8 Nile Online
36992 298 271 14 Etisalat MISR
3741 265 985 227 The Internet Solution
24835 232 78 10 RAYA Telecom - Egypt
33776 230 13 5 Starcomms Nigeria Limited
6713 214 199 11 Itissalat Al-MAGHRIB
29571 192 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 3672 3839 259 bellsouth.net, inc.
4323 2559 1104 401 Time Warner Telecom
23456 2037 494 1105 >>UNKNOWN<<
4766 1856 9501 593 Korea Telecom (KIX)
1785 1789 681 131 AppliedTheory Corporation
18566 1606 331 195 Covad Communications
20115 1582 1544 648 Charter Communications
6478 1572 302 37 AT&T Worldnet Services
7545 1553 301 84 TPG Internet Pty Ltd
19262 1490 4935 304 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 2559 2158 Time Warner Telecom
1785 1789 1658 AppliedTheory Corporation
6478 1572 1535 AT&T Worldnet Services
7545 1553 1469 TPG Internet Pty Ltd
17974 1453 1419 PT TELEKOMUNIKASI INDONESIA
18566 1606 1411 Covad Communications
4755 1478 1321 Videsh Sanchar Nigam Ltd. Aut
11492 1326 1311 Cable One
4766 1856 1263 Korea Telecom (KIX)
10620 1403 1251 TVCABLE BOGOTA
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 2.57.0.0/16 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 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
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
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
31.22.80.0/21 8455 ATOM86
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 /9:11 /10:26 /11:75 /12:219
/13:448 /14:771 /15:1402 /16:11693 /17:5939 /18:9737
/19:19588 /20:25445 /21:25653 /22:34055 /23:32722 /24:185424
/25:370 /26:338 /27:170 /28:204 /29:188 /30:656
/31:54 /32:628
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2265 3672 bellsouth.net, inc.
18566 1585 1606 Covad Communications
6478 1526 1572 AT&T Worldnet Services
4323 1373 2559 Time Warner Telecom
10620 1293 1403 TVCABLE BOGOTA
11492 1274 1326 Cable One
23456 1102 2037 >>UNKNOWN<<
7011 1063 1164 Citizens Utilities
1785 1056 1789 AppliedTheory Corporation
6503 979 1196 AVANTEL, S.A.
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:294 2:75 4:18 5:1 8:349 12:2023
13:1 14:427 15:15 16:3 17:8 20:9
23:3 24:1588 27:700 31:21 32:126 33:3
34:2 37:1 38:749 39:1 40:101 41:2370
44:3 46:779 47:4 49:146 50:124 52:13
55:4 56:2 57:40 58:821 59:503 60:387
61:1173 62:1021 63:1930 64:3900 65:2357 66:4390
67:1831 68:1236 69:3025 70:743 71:349 72:1927
73:3 74:2385 75:298 76:345 77:859 78:699
79:462 80:1107 81:827 82:525 83:475 84:662
85:1050 86:556 87:793 88:350 89:1577 90:175
91:3660 92:511 93:1055 94:1240 95:798 96:456
97:252 98:818 99:35 101:49 106:1 107:4
108:48 109:936 110:519 111:680 112:325 113:387
114:516 115:719 116:984 117:673 118:755 119:1089
120:284 121:763 122:1611 123:1059 124:1318 125:1256
128:267 129:177 130:173 131:565 132:109 133:20
134:218 135:49 136:213 137:142 138:300 139:118
140:486 141:173 142:383 143:390 144:482 145:52
146:439 147:201 148:635 149:261 150:167 151:187
152:299 153:180 154:3 155:390 156:184 157:349
158:131 159:379 160:317 161:209 162:278 163:165
164:494 165:368 166:501 167:411 168:722 169:155
170:782 171:70 172:2 173:1274 174:536 175:350
177:74 178:763 180:789 181:4 182:410 183:192
184:313 185:1 186:1116 187:902 188:924 189:1033
190:4769 192:5803 193:4816 194:3539 195:3073 196:1220
197:15 198:3605 199:3891 200:5580 201:1578 202:8411
203:8459 204:4118 205:2321 206:2658 207:3032 208:3921
209:3504 210:2728 211:1366 212:2003 213:1765 214:761
215:66 216:4901 217:1661 218:561 219:382 220:1196
221:482 222:313 223:104
End of report
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