Routing Table Report 00:00 GMT Wed 19 Oct, 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: 381529
Prefixes after maximum aggregation: 170767
Deaggregation factor: 2.23
Unique aggregates announced to Internet: 185299
Total ASes present in the Internet Routing Table: 39099
Prefixes per ASN: 9.76
Origin-only ASes present in the Internet Routing Table: 32345
Origin ASes announcing only one prefix: 15506
Transit ASes present in the Internet Routing Table: 5232
Transit-only ASes present in the Internet Routing Table: 137
Average AS path length visible in the Internet Routing Table: 4.0
Max AS path length visible: 33
Max AS path prepend of ASN (51310) 25
Prefixes from unregistered ASNs in the Routing Table: 4969
Unregistered ASNs in the Routing Table: 821
Number of 32-bit ASNs allocated by the RIRs: 1866
Number of 32-bit ASNs visible in the Routing Table: 1522
Prefixes from 32-bit ASNs in the Routing Table: 3481
Special use prefixes present in the Routing Table: 89
Prefixes being announced from unallocated address space: 89
Number of addresses announced to Internet: 2484924425
Equivalent to 148 /8s, 28 /16s and 240 /24s
Percentage of available address space announced: 67.0
Percentage of allocated address space announced: 67.0
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 91.5
Total number of prefixes smaller than registry allocations: 159320
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 92536
Total APNIC prefixes after maximum aggregation: 29778
APNIC Deaggregation factor: 3.11
Prefixes being announced from the APNIC address blocks: 89091
Unique aggregates announced from the APNIC address blocks: 37949
APNIC Region origin ASes present in the Internet Routing Table: 4566
APNIC Prefixes per ASN: 19.51
APNIC Region origin ASes announcing only one prefix: 1269
APNIC Region transit ASes present in the Internet Routing Table: 717
Average APNIC Region AS path length visible: 4.3
Max APNIC Region AS path length visible: 24
Number of APNIC region 32-bit ASNs visible in the Routing Table: 94
Number of APNIC addresses announced to Internet: 628733696
Equivalent to 37 /8s, 121 /16s and 183 /24s
Percentage of available APNIC address space announced: 79.7
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 131072-132095, 132096-133119
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: 148476
Total ARIN prefixes after maximum aggregation: 76479
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 120146
Unique aggregates announced from the ARIN address blocks: 47825
ARIN Region origin ASes present in the Internet Routing Table: 14751
ARIN Prefixes per ASN: 8.14
ARIN Region origin ASes announcing only one prefix: 5666
ARIN Region transit ASes present in the Internet Routing Table: 1530
Average ARIN Region AS path length visible: 3.7
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: 804516632
Equivalent to 47 /8s, 243 /16s and 243 /24s
Percentage of available ARIN address space announced: 63.9
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: 92684
Total RIPE prefixes after maximum aggregation: 50764
RIPE Deaggregation factor: 1.83
Prefixes being announced from the RIPE address blocks: 84519
Unique aggregates announced from the RIPE address blocks: 54209
RIPE Region origin ASes present in the Internet Routing Table: 16052
RIPE Prefixes per ASN: 5.27
RIPE Region origin ASes announcing only one prefix: 7969
RIPE Region transit ASes present in the Internet Routing Table: 2528
Average RIPE Region AS path length visible: 4.1
Max RIPE Region AS path length visible: 33
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1073
Number of RIPE addresses announced to Internet: 491104708
Equivalent to 29 /8s, 69 /16s and 169 /24s
Percentage of available RIPE address space announced: 79.1
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: 35608
Total LACNIC prefixes after maximum aggregation: 7907
LACNIC Deaggregation factor: 4.50
Prefixes being announced from the LACNIC address blocks: 34918
Unique aggregates announced from the LACNIC address blocks: 17911
LACNIC Region origin ASes present in the Internet Routing Table: 1539
LACNIC Prefixes per ASN: 22.69
LACNIC Region origin ASes announcing only one prefix: 451
LACNIC Region transit ASes present in the Internet Routing Table: 273
Average LACNIC Region AS path length visible: 4.2
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 339
Number of LACNIC addresses announced to Internet: 91155208
Equivalent to 5 /8s, 110 /16s and 235 /24s
Percentage of available LACNIC address space announced: 60.4
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: 8540
Total AfriNIC prefixes after maximum aggregation: 2014
AfriNIC Deaggregation factor: 4.24
Prefixes being announced from the AfriNIC address blocks: 6608
Unique aggregates announced from the AfriNIC address blocks: 1957
AfriNIC Region origin ASes present in the Internet Routing Table: 486
AfriNIC Prefixes per ASN: 13.60
AfriNIC Region origin ASes announcing only one prefix: 151
AfriNIC Region transit ASes present in the Internet Routing Table: 108
Average AfriNIC Region AS path length visible: 3.9
Max AfriNIC Region AS path length visible: 25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 4
Number of AfriNIC addresses announced to Internet: 27814912
Equivalent to 1 /8s, 168 /16s and 108 /24s
Percentage of available AfriNIC address space announced: 41.4
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 1938 11103 657 Korea Telecom (KIX)
17974 1916 519 33 PT TELEKOMUNIKASI INDONESIA
7545 1607 303 85 TPG Internet Pty Ltd
4755 1536 635 173 Videsh Sanchar Nigam Ltd. Aut
7552 1388 1064 7 Vietel Corporation
9829 1165 989 28 BSNL National Internet Backbo
9583 1088 80 503 Sify Limited
4808 1037 2076 303 CNCGROUP IP network: China169
24560 969 340 223 Bharti Airtel Ltd.
18101 951 165 146 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 3547 3815 222 bellsouth.net, inc.
7029 2291 1042 210 Windstream Communications Inc
18566 2098 383 177 Covad Communications
1785 1840 680 121 AppliedTheory Corporation
4323 1628 1099 391 Time Warner Telecom
20115 1591 1541 634 Charter Communications
22773 1462 2907 100 Cox Communications, Inc.
19262 1395 4728 400 Verizon Global Networks
30036 1391 251 672 Mediacom Communications Corp
7018 1342 7096 852 AT&T WorldNet Services
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
8402 1427 352 13 Corbina telecom
286 1088 827 210 KPNQwest Backbone AS
6830 654 1927 415 UPC Distribution Services
34984 583 108 179 Tellcom Iletisim Hizmetleri
20940 548 184 421 Akamai Technologies European
9116 540 326 31 Goldenlines main autonomous s
3292 532 2080 408 TDC Tele Danmark
3320 501 8169 383 Deutsche Telekom AG
12479 481 593 7 Uni2 Autonomous System
8866 459 133 26 Bulgarian Telecommunication C
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 1681 310 155 TVCABLE BOGOTA
8151 1471 2860 351 Uninet S.A. de C.V.
28573 1387 1032 69 Types of queries are: POCs, o
7303 1164 683 175 Telecom Argentina Stet-France
27947 593 72 79 Telconet S.A
6503 584 450 71 AVANTEL, S.A.
22047 580 322 17 Types of queries are: POCs, o
7738 552 1050 31 Telecomunicacoes da Bahia S.A
10481 548 430 20 Prima S.A.
3816 541 233 96 COLOMBIA TELECOMUNICACIONES S
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
24863 799 146 34 LINKdotNET AS number
8452 653 446 12 TEDATA
15475 443 74 8 Nile Online
36992 300 415 21 Etisalat MISR
3741 279 938 230 The Internet Solution
6713 242 519 14 Itissalat Al-MAGHRIB
15706 240 32 6 Sudatel Internet Exchange Aut
29571 218 18 14 Ci Telecom Autonomous system
33776 207 13 14 Starcomms Nigeria Limited
12258 197 28 58 YEBO-AS
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 3547 3815 222 bellsouth.net, inc.
7029 2291 1042 210 Windstream Communications Inc
18566 2098 383 177 Covad Communications
4766 1938 11103 657 Korea Telecom (KIX)
17974 1916 519 33 PT TELEKOMUNIKASI INDONESIA
1785 1840 680 121 AppliedTheory Corporation
10620 1681 310 155 TVCABLE BOGOTA
4323 1628 1099 391 Time Warner Telecom
7545 1607 303 85 TPG Internet Pty Ltd
20115 1591 1541 634 Charter Communications
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
7029 2291 2081 Windstream Communications Inc
18566 2098 1921 Covad Communications
17974 1916 1883 PT TELEKOMUNIKASI INDONESIA
1785 1840 1719 AppliedTheory Corporation
10620 1681 1526 TVCABLE BOGOTA
7545 1607 1522 TPG Internet Pty Ltd
8402 1427 1414 Corbina telecom
7552 1388 1381 Vietel Corporation
4755 1536 1363 Videsh Sanchar Nigam Ltd. Aut
22773 1462 1362 Cox Communications, Inc.
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
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
17300 UNALLOCATED 12.45.103.0/24 7018 AT&T WorldNet Servic
17300 UNALLOCATED 12.45.110.0/24 701 UUNET Technologies,
16476 UNALLOCATED 12.46.27.0/24 7018 AT&T WorldNet Servic
32873 UNALLOCATED 12.46.100.0/23 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
41.223.92.0/22 36936 >>UNKNOWN<<
62.61.220.0/24 24974 Tachyon Europe BV - Wireless
62.61.221.0/24 24974 Tachyon Europe BV - Wireless
64.21.192.0/20 11610 Internet Nebraska
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 /10:27 /11:81 /12:235
/13:464 /14:812 /15:1456 /16:12117 /17:6290 /18:10390
/19:20493 /20:28479 /21:27730 /22:37307 /23:35565 /24:198372
/25:67 /26:85 /27:115 /28:286 /29:113 /30:483
/31:55 /32:475
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2185 3547 bellsouth.net, inc.
18566 2047 2098 Covad Communications
7029 1948 2291 Windstream Communications Inc
10620 1576 1681 TVCABLE BOGOTA
8402 1404 1427 Corbina telecom
30036 1353 1391 Mediacom Communications Corp
11492 1118 1156 Cable One
1785 1057 1840 AppliedTheory Corporation
7011 1048 1166 Citizens Utilities
22773 950 1462 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:409 2:483 4:19 5:1 6:3 8:360
12:1958 13:1 14:543 15:11 16:3 17:7
20:9 23:58 24:1680 27:964 31:601 32:150
33:4 34:2 36:4 38:757 39:1 40:109
41:2662 42:53 44:3 46:999 47:3 49:296
50:440 52:13 55:4 56:2 57:47 58:890
59:491 60:364 61:1187 62:1103 63:1945 64:4107
65:2310 66:4308 67:1999 68:1331 69:3345 70:936
71:377 72:1893 73:1 74:2638 75:399 76:354
77:885 78:850 79:481 80:1147 81:829 82:513
83:530 84:643 85:1117 86:411 87:897 88:360
89:1603 90:269 91:4217 92:530 93:1518 94:1303
95:1066 96:441 97:283 98:922 99:37 101:216
103:370 106:70 107:72 108:72 109:1064 110:673
111:789 112:330 113:485 114:614 115:704 116:909
117:714 118:913 119:1239 120:339 121:712 122:1557
123:1025 124:1363 125:1385 128:258 129:185 130:166
131:594 132:145 133:21 134:220 135:54 136:213
137:140 138:289 139:133 140:488 141:297 142:390
143:440 144:496 145:64 146:473 147:235 148:695
149:266 150:166 151:192 152:448 153:178 154:7
155:385 156:206 157:362 158:153 159:476 160:324
161:214 162:339 163:174 164:509 165:385 166:536
167:435 168:742 169:145 170:873 171:86 172:4
173:1721 174:685 175:437 176:273 177:321 178:1063
180:1097 181:36 182:642 183:218 184:375 185:1
186:1248 187:685 188:938 189:872 190:5116 192:5940
193:5046 194:3584 195:3135 196:1261 197:169 198:3640
199:4175 200:5486 201:1662 202:8560 203:8489 204:4295
205:2373 206:2702 207:2832 208:4074 209:3625 210:2725
211:1462 212:2120 213:1777 214:793 215:91 216:5021
217:1610 218:569 219:338 220:1244 221:515 222:348
223:278
End of report
