Routing Table Report 00:00 GMT Thu 27 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: 383044
Prefixes after maximum aggregation: 167311
Deaggregation factor: 2.29
Unique aggregates announced to Internet: 185669
Total ASes present in the Internet Routing Table: 39171
Prefixes per ASN: 9.78
Origin-only ASes present in the Internet Routing Table: 32452
Origin ASes announcing only one prefix: 15518
Transit ASes present in the Internet Routing Table: 5157
Transit-only ASes present in the Internet Routing Table: 133
Average AS path length visible in the Internet Routing Table: 3.9
Max AS path length visible: 28
Max AS path prepend of ASN (36992) 22
Prefixes from unregistered ASNs in the Routing Table: 5145
Unregistered ASNs in the Routing Table: 850
Number of 32-bit ASNs allocated by the RIRs: 1897
Number of 32-bit ASNs visible in the Routing Table: 1562
Prefixes from 32-bit ASNs in the Routing Table: 3588
Special use prefixes present in the Routing Table: 82
Prefixes being announced from unallocated address space: 87
Number of addresses announced to Internet: 2488599562
Equivalent to 148 /8s, 85 /16s and 4 /24s
Percentage of available address space announced: 67.1
Percentage of allocated address space announced: 67.1
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: 161287
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 91339
Total APNIC prefixes after maximum aggregation: 29790
APNIC Deaggregation factor: 3.07
Prefixes being announced from the APNIC address blocks: 87892
Unique aggregates announced from the APNIC address blocks: 37667
APNIC Region origin ASes present in the Internet Routing Table: 4558
APNIC Prefixes per ASN: 19.28
APNIC Region origin ASes announcing only one prefix: 1270
APNIC Region transit ASes present in the Internet Routing Table: 701
Average APNIC Region AS path length visible: 4.2
Max APNIC Region AS path length visible: 17
Number of APNIC region 32-bit ASNs visible in the Routing Table: 97
Number of APNIC addresses announced to Internet: 628824576
Equivalent to 37 /8s, 123 /16s and 26 /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: 148428
Total ARIN prefixes after maximum aggregation: 76599
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 120085
Unique aggregates announced from the ARIN address blocks: 48129
ARIN Region origin ASes present in the Internet Routing Table: 14757
ARIN Prefixes per ASN: 8.14
ARIN Region origin ASes announcing only one prefix: 5662
ARIN Region transit ASes present in the Internet Routing Table: 1521
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: 12
Number of ARIN addresses announced to Internet: 804761368
Equivalent to 47 /8s, 247 /16s and 175 /24s
Percentage of available ARIN address space announced: 64.0
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: 94975
Total RIPE prefixes after maximum aggregation: 50892
RIPE Deaggregation factor: 1.87
Prefixes being announced from the RIPE address blocks: 86735
Unique aggregates announced from the RIPE address blocks: 54271
RIPE Region origin ASes present in the Internet Routing Table: 16080
RIPE Prefixes per ASN: 5.39
RIPE Region origin ASes announcing only one prefix: 7977
RIPE Region transit ASes present in the Internet Routing Table: 2486
Average RIPE Region AS path length visible: 3.9
Max RIPE Region AS path length visible: 28
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1095
Number of RIPE addresses announced to Internet: 491487428
Equivalent to 29 /8s, 75 /16s and 128 /24s
Percentage of available RIPE address space announced: 79.2
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: 35980
Total LACNIC prefixes after maximum aggregation: 7926
LACNIC Deaggregation factor: 4.54
Prefixes being announced from the LACNIC address blocks: 35335
Unique aggregates announced from the LACNIC address blocks: 18108
LACNIC Region origin ASes present in the Internet Routing Table: 1542
LACNIC Prefixes per ASN: 22.92
LACNIC Region origin ASes announcing only one prefix: 453
LACNIC Region transit ASes present in the Internet Routing Table: 273
Average LACNIC Region AS path length visible: 4.3
Max LACNIC Region AS path length visible: 20
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 354
Number of LACNIC addresses announced to Internet: 92301832
Equivalent to 5 /8s, 128 /16s and 106 /24s
Percentage of available LACNIC address space announced: 61.1
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: 8543
Total AfriNIC prefixes after maximum aggregation: 2026
AfriNIC Deaggregation factor: 4.22
Prefixes being announced from the AfriNIC address blocks: 6605
Unique aggregates announced from the AfriNIC address blocks: 1989
AfriNIC Region origin ASes present in the Internet Routing Table: 493
AfriNIC Prefixes per ASN: 13.40
AfriNIC Region origin ASes announcing only one prefix: 156
AfriNIC Region transit ASes present in the Internet Routing Table: 112
Average AfriNIC Region AS path length visible: 3.8
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 4
Number of AfriNIC addresses announced to Internet: 27903488
Equivalent to 1 /8s, 169 /16s and 198 /24s
Percentage of available AfriNIC address space announced: 41.6
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 1942 11104 659 Korea Telecom (KIX)
17974 1913 519 33 PT TELEKOMUNIKASI INDONESIA
7545 1609 303 85 TPG Internet Pty Ltd
4755 1538 637 173 Videsh Sanchar Nigam Ltd. Aut
9829 1163 989 28 BSNL National Internet Backbo
9583 1091 80 499 Sify Limited
4808 1068 2087 306 CNCGROUP IP network: China169
7552 984 1062 11 Vietel Corporation
24560 964 342 218 Bharti Airtel Ltd.
18101 952 166 150 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 3543 3814 220 bellsouth.net, inc.
7029 2366 1042 210 Windstream Communications Inc
18566 2097 383 177 Covad Communications
1785 1841 680 123 AppliedTheory Corporation
4323 1624 1094 389 Time Warner Telecom
20115 1594 1546 619 Charter Communications
22773 1464 2907 100 Cox Communications, Inc.
19262 1395 4728 400 Verizon Global Networks
30036 1389 252 669 Mediacom Communications Corp
7018 1318 7047 863 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
3352 2187 2317 51 Internet Access Network of TD
8402 1509 352 13 Corbina telecom
286 1085 809 196 KPNQwest Backbone AS
6830 654 1927 415 UPC Distribution Services
34984 590 108 180 Tellcom Iletisim Hizmetleri
20940 556 186 427 Akamai Technologies European
9116 540 326 31 Goldenlines main autonomous s
3292 532 2074 407 TDC Tele Danmark
3320 503 8169 383 Deutsche Telekom AG
12479 481 595 8 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 1694 313 155 TVCABLE BOGOTA
8151 1459 2910 348 Uninet S.A. de C.V.
28573 1459 1032 69 Types of queries are: POCs, o
7303 1221 747 177 Telecom Argentina Stet-France
27947 602 72 85 Telconet S.A
6503 581 450 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 542 233 95 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 800 146 34 LINKdotNET AS number
8452 640 446 12 TEDATA
15475 455 74 8 Nile Online
36992 296 415 20 Etisalat MISR
3741 280 939 229 The Internet Solution
6713 244 519 14 Itissalat Al-MAGHRIB
15706 240 32 6 Sudatel Internet Exchange Aut
29571 218 17 13 Ci Telecom Autonomous system
33776 209 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 3543 3814 220 bellsouth.net, inc.
7029 2366 1042 210 Windstream Communications Inc
3352 2187 2317 51 Internet Access Network of TD
18566 2097 383 177 Covad Communications
4766 1942 11104 659 Korea Telecom (KIX)
17974 1913 519 33 PT TELEKOMUNIKASI INDONESIA
1785 1841 680 123 AppliedTheory Corporation
10620 1694 313 155 TVCABLE BOGOTA
4323 1624 1094 389 Time Warner Telecom
7545 1609 303 85 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
7029 2366 2156 Windstream Communications Inc
3352 2187 2136 Internet Access Network of TD
18566 2097 1920 Covad Communications
17974 1913 1880 PT TELEKOMUNIKASI INDONESIA
1785 1841 1718 AppliedTheory Corporation
10620 1694 1539 TVCABLE BOGOTA
7545 1609 1524 TPG Internet Pty Ltd
8402 1509 1496 Corbina telecom
28573 1459 1390 Types of queries are: POCs, o
4755 1538 1365 Videsh Sanchar Nigam Ltd. Aut
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
41.222.79.0/24 36938 >>UNKNOWN<<
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
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 /12:236
/13:465 /14:812 /15:1458 /16:12140 /17:6325 /18:10392
/19:20468 /20:28529 /21:28034 /22:37581 /23:36343 /24:198438
/25:67 /26:85 /27:115 /28:282 /29:111 /30:488
/31:53 /32:482
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2183 3543 bellsouth.net, inc.
18566 2046 2097 Covad Communications
7029 2019 2366 Windstream Communications Inc
3352 1736 2187 Internet Access Network of TD
10620 1589 1694 TVCABLE BOGOTA
8402 1486 1509 Corbina telecom
30036 1350 1389 Mediacom Communications Corp
11492 1111 1149 Cable One
1785 1056 1841 AppliedTheory Corporation
7011 1050 1168 Citizens Utilities
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:412 2:486 4:19 5:1 6:3 7:1
8:362 12:1960 13:1 14:541 15:11 16:3
17:7 20:9 23:59 24:1678 27:963 31:616
32:150 33:4 34:2 36:4 38:758 39:1
40:110 41:2671 42:54 44:3 46:1011 47:3
49:292 50:440 52:13 55:6 56:2 57:50
58:896 59:492 60:364 61:1177 62:1093 63:1978
64:4078 65:2311 66:4310 67:2019 68:1331 69:3299
70:940 71:380 72:1832 73:1 74:2631 75:404
76:328 77:886 78:873 79:458 80:1586 81:958
82:514 83:581 84:628 85:1127 86:408 87:896
88:425 89:1620 90:238 91:4241 92:532 93:1544
94:1314 95:1094 96:439 97:284 98:931 99:37
101:219 103:404 106:70 107:77 108:76 109:1055
110:646 111:790 112:332 113:486 114:615 115:645
116:831 117:699 118:902 119:1123 120:339 121:713
122:1555 123:1020 124:1345 125:1313 128:244 129:188
130:166 131:593 132:146 133:21 134:220 135:54
136:213 137:139 138:284 139:136 140:488 141:300
142:394 143:423 144:493 145:64 146:475 147:233
148:693 149:267 150:166 151:192 152:447 153:178
154:7 155:388 156:208 157:364 158:153 159:482
160:329 161:214 162:341 163:174 164:510 165:388
166:537 167:437 168:742 169:147 170:872 171:86
172:4 173:1729 174:675 175:394 176:293 177:358
178:1081 180:1105 181:36 182:658 183:217 184:378
185:1 186:1302 187:699 188:945 189:867 190:5129
192:5956 193:5058 194:3585 195:3129 196:1263 197:162
198:3635 199:4178 200:5528 201:1689 202:8297 203:8396
204:4301 205:2368 206:2694 207:2824 208:4021 209:3599
210:2730 211:1465 212:2139 213:1813 214:791 215:96
216:4934 217:1616 218:566 219:344 220:1222 221:516
222:346 223:271
End of report