Routing Table Report 00:00 GMT Mon 23 May, 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: 362351
Prefixes after maximum aggregation: 163400
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 176710
Total ASes present in the Internet Routing Table: 37641
Prefixes per ASN: 9.63
Origin-only ASes present in the Internet Routing Table: 31439
Origin ASes announcing only one prefix: 15032
Transit ASes present in the Internet Routing Table: 5109
Transit-only ASes present in the Internet Routing Table: 132
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 26
Max AS path prepend of ASN (36992) 22
Prefixes from unregistered ASNs in the Routing Table: 3252
Unregistered ASNs in the Routing Table: 364
Number of 32-bit ASNs allocated by the RIRs: 1369
Number of 32-bit ASNs visible in the Routing Table: 1093
Prefixes from 32-bit ASNs in the Routing Table: 2475
Special use prefixes present in the Routing Table: 78
Prefixes being announced from unallocated address space: 165
Number of addresses announced to Internet: 2433678567
Equivalent to 145 /8s, 14 /16s and 252 /24s
Percentage of available address space announced: 65.7
Percentage of allocated address space announced: 65.7
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.9
Total number of prefixes smaller than registry allocations: 150278
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87573
Total APNIC prefixes after maximum aggregation: 28963
APNIC Deaggregation factor: 3.02
Prefixes being announced from the APNIC address blocks: 84032
Unique aggregates announced from the APNIC address blocks: 36687
APNIC Region origin ASes present in the Internet Routing Table: 4438
APNIC Prefixes per ASN: 18.93
APNIC Region origin ASes announcing only one prefix: 1242
APNIC Region transit ASes present in the Internet Routing Table: 700
Average APNIC Region AS path length visible: 4.9
Max APNIC Region AS path length visible: 21
Number of APNIC region 32-bit ASNs visible in the Routing Table: 47
Number of APNIC addresses announced to Internet: 615332289
Equivalent to 36 /8s, 173 /16s and 57 /24s
Percentage of available APNIC address space announced: 78.0
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: 143416
Total ARIN prefixes after maximum aggregation: 73602
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 115337
Unique aggregates announced from the ARIN address blocks: 45550
ARIN Region origin ASes present in the Internet Routing Table: 14395
ARIN Prefixes per ASN: 8.01
ARIN Region origin ASes announcing only one prefix: 5468
ARIN Region transit ASes present in the Internet Routing Table: 1480
Average ARIN Region AS path length visible: 4.0
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: 801738264
Equivalent to 47 /8s, 201 /16s and 142 /24s
Percentage of available ARIN address space announced: 63.7
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: 87767
Total RIPE prefixes after maximum aggregation: 48609
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 80466
Unique aggregates announced from the RIPE address blocks: 51506
RIPE Region origin ASes present in the Internet Routing Table: 15630
RIPE Prefixes per ASN: 5.15
RIPE Region origin ASes announcing only one prefix: 7757
RIPE Region transit ASes present in the Internet Routing Table: 2485
Average RIPE Region AS path length visible: 4.2
Max RIPE Region AS path length visible: 24
Number of RIPE region 32-bit ASNs visible in the Routing Table: 812
Number of RIPE addresses announced to Internet: 473498220
Equivalent to 28 /8s, 57 /16s and 2 /24s
Percentage of available RIPE address space announced: 76.3
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: 32935
Total LACNIC prefixes after maximum aggregation: 7537
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31950
Unique aggregates announced from the LACNIC address blocks: 16764
LACNIC Region origin ASes present in the Internet Routing Table: 1455
LACNIC Prefixes per ASN: 21.96
LACNIC Region origin ASes announcing only one prefix: 430
LACNIC Region transit ASes present in the Internet Routing Table: 263
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 20
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 218
Number of LACNIC addresses announced to Internet: 83494664
Equivalent to 4 /8s, 250 /16s and 7 /24s
Percentage of available LACNIC address space announced: 55.3
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: 7885
Total AfriNIC prefixes after maximum aggregation: 1885
AfriNIC Deaggregation factor: 4.18
Prefixes being announced from the AfriNIC address blocks: 6213
Unique aggregates announced from the AfriNIC address blocks: 1908
AfriNIC Region origin ASes present in the Internet Routing Table: 447
AfriNIC Prefixes per ASN: 13.90
AfriNIC Region origin ASes announcing only one prefix: 135
AfriNIC Region transit ASes present in the Internet Routing Table: 102
Average AfriNIC Region AS path length visible: 4.3
Max AfriNIC Region AS path length visible: 26
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 4
Number of AfriNIC addresses announced to Internet: 23211520
Equivalent to 1 /8s, 98 /16s and 46 /24s
Percentage of available AfriNIC address space announced: 34.6
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 1897 9502 615 Korea Telecom (KIX)
17974 1821 516 32 PT TELEKOMUNIKASI INDONESIA
7545 1556 301 87 TPG Internet Pty Ltd
4755 1471 630 167 Videsh Sanchar Nigam Ltd. Aut
24560 1151 336 184 Bharti Airtel Ltd.
7552 1138 1064 7 Vietel Corporation
9583 1082 81 511 Sify Limited
9829 1039 874 51 BSNL National Internet Backbo
4808 959 2023 275 CNCGROUP IP network: China169
17488 945 170 101 Hathway IP Over Cable Interne
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 3642 3822 260 bellsouth.net, inc.
4323 1974 1097 399 Time Warner Telecom
18566 1904 362 266 Covad Communications
1785 1787 681 124 AppliedTheory Corporation
6478 1694 315 54 AT&T Worldnet Services
20115 1588 1543 633 Charter Communications
19262 1497 4943 301 Verizon Global Networks
7018 1372 7085 897 AT&T WorldNet Services
22773 1331 2897 88 Cox Communications, Inc.
2386 1270 535 911 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 1014 798 176 KPNQwest Backbone AS
9116 539 326 30 Goldenlines main autonomous s
6830 520 1780 320 UPC Distribution Services
34984 514 106 182 Tellcom Iletisim Hizmetleri
3292 513 2062 395 TDC Tele Danmark
20940 462 135 354 Akamai Technologies European
29049 453 33 44 AzerSat LLC.
8866 444 134 26 Bulgarian Telecommunication C
12479 430 577 6 Uni2 Autonomous System
3320 418 8149 364 Deutsche Telekom AG
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 1481 273 154 TVCABLE BOGOTA
8151 1370 2685 359 Uninet S.A. de C.V.
28573 1313 991 86 Types of queries are: POCs, o
7303 924 470 150 Telecom Argentina Stet-France
6503 734 354 74 AVANTEL, S.A.
14420 670 54 91 Types of queries are: POCs, o
22047 563 310 15 Types of queries are: POCs, o
3816 523 227 100 COLOMBIA TELECOMUNICACIONES S
13489 516 258 120 Orbitel S.A. E.S.P.
27947 500 53 51 Telconet S.A
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 891 445 11 TEDATA
24863 788 147 38 LINKdotNET AS number
15475 416 90 8 Nile Online
36992 287 331 17 Etisalat MISR
3741 268 985 228 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
33776 217 12 11 Starcomms Nigeria Limited
24835 212 78 10 RAYA Telecom - Egypt
29571 162 17 11 Ci Telecom Autonomous system
16637 153 441 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 3642 3822 260 bellsouth.net, inc.
23456 2475 624 1355 >>UNKNOWN<<
4323 1974 1097 399 Time Warner Telecom
18566 1904 362 266 Covad Communications
4766 1897 9502 615 Korea Telecom (KIX)
17974 1821 516 32 PT TELEKOMUNIKASI INDONESIA
1785 1787 681 124 AppliedTheory Corporation
6478 1694 315 54 AT&T Worldnet Services
20115 1588 1543 633 Charter Communications
7545 1556 301 87 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
17974 1821 1789 PT TELEKOMUNIKASI INDONESIA
1785 1787 1663 AppliedTheory Corporation
6478 1694 1640 AT&T Worldnet Services
18566 1904 1638 Covad Communications
4323 1974 1575 Time Warner Telecom
7545 1556 1469 TPG Internet Pty Ltd
10620 1481 1327 TVCABLE BOGOTA
4755 1471 1304 Videsh Sanchar Nigam Ltd. Aut
4766 1897 1282 Korea Telecom (KIX)
11492 1266 1251 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
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
26973 UNALLOCATED 12.39.152.0/24 1239 Sprint
26973 UNALLOCATED 12.39.154.0/23 1239 Sprint
26973 UNALLOCATED 12.39.155.0/24 1239 Sprint
26973 UNALLOCATED 12.39.159.0/24 1239 Sprint
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
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
27.0.128.0/17 7514 Media Exchange, Inc.
41.190.32.0/23 31856 CABSAS
41.190.34.0/23 31856 CABSAS
41.190.36.0/23 31856 CABSAS
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 /8:21 /9:12 /10:28 /11:80 /12:226
/13:461 /14:801 /15:1426 /16:11915 /17:6063 /18:10055
/19:19905 /20:26372 /21:26332 /22:34656 /23:33554 /24:187810
/25:375 /26:350 /27:170 /28:283 /29:175 /30:595
/31:65 /32:621
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2242 3642 bellsouth.net, inc.
18566 1862 1904 Covad Communications
6478 1648 1694 AT&T Worldnet Services
10620 1371 1481 TVCABLE BOGOTA
23456 1220 2475 >>UNKNOWN<<
11492 1212 1266 Cable One
7011 1060 1159 Citizens Utilities
1785 1051 1787 AppliedTheory Corporation
4323 885 1974 Time Warner Telecom
286 874 1014 KPNQwest Backbone AS
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:278 2:64 4:20 5:1 6:3 8:352
12:1988 13:1 14:458 15:15 16:3 17:8
20:10 23:7 24:1640 27:763 31:349 32:126
33:4 34:2 37:1 38:741 40:101 41:2526
42:5 44:3 46:929 47:4 49:197 50:416
52:13 54:1 55:3 56:2 57:40 58:841
59:484 60:387 61:1238 62:977 63:1949 64:3968
65:2281 66:4171 67:1869 68:1269 69:3088 70:749
71:357 72:1916 73:3 74:2407 75:317 76:347
77:909 78:711 79:498 80:1106 81:825 82:508
83:458 84:648 85:1080 86:612 87:776 88:335
89:1583 90:204 91:3785 92:517 93:1078 94:1298
95:831 96:504 97:249 98:845 99:35 101:57
103:13 106:1 107:7 108:85 109:955 110:601
111:718 112:303 113:401 114:534 115:669 116:969
117:691 118:819 119:1137 120:309 121:680 122:1627
123:1001 124:1266 125:1229 128:263 129:179 130:163
131:570 132:109 133:19 134:214 135:48 136:215
137:144 138:301 139:124 140:486 141:239 142:406
143:401 144:482 145:54 146:442 147:221 148:588
149:242 150:169 151:186 152:308 153:178 154:3
155:396 156:194 157:353 158:135 159:387 160:318
161:207 162:282 163:163 164:501 165:372 166:515
167:433 168:727 169:154 170:794 171:77 172:1
173:1578 174:555 175:375 177:124 178:924 180:841
181:17 182:448 183:207 184:355 185:1 186:1164
187:738 188:861 189:897 190:4805 192:5821 193:4874
194:3530 195:3118 196:1224 197:17 198:3612 199:3912
200:5530 201:1498 202:8376 203:8438 204:4169 205:2327
206:2748 207:2916 208:3981 209:3457 210:2741 211:1428
212:2030 213:1782 214:731 215:71 216:4917 217:1642
218:569 219:363 220:1202 221:486 222:340 223:148
End of report
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