Routing Table Report 00:00 GMT Thu 02 Jun, 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: 363391
Prefixes after maximum aggregation: 163583
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 176956
Total ASes present in the Internet Routing Table: 37808
Prefixes per ASN: 9.61
Origin-only ASes present in the Internet Routing Table: 31587
Origin ASes announcing only one prefix: 15131
Transit ASes present in the Internet Routing Table: 5096
Transit-only ASes present in the Internet Routing Table: 138
Average AS path length visible in the Internet Routing Table: 4.9
Max AS path length visible: 29
Max AS path prepend of ASN (36992) 22
Prefixes from unregistered ASNs in the Routing Table: 3462
Unregistered ASNs in the Routing Table: 418
Number of 32-bit ASNs allocated by the RIRs: 1413
Number of 32-bit ASNs visible in the Routing Table: 1125
Prefixes from 32-bit ASNs in the Routing Table: 2595
Special use prefixes present in the Routing Table: 78
Prefixes being announced from unallocated address space: 170
Number of addresses announced to Internet: 2452918267
Equivalent to 146 /8s, 52 /16s and 143 /24s
Percentage of available address space announced: 66.2
Percentage of allocated address space announced: 66.2
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 91.0
Total number of prefixes smaller than registry allocations: 151415
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 86936
Total APNIC prefixes after maximum aggregation: 28957
APNIC Deaggregation factor: 3.00
Prefixes being announced from the APNIC address blocks: 83477
Unique aggregates announced from the APNIC address blocks: 35976
APNIC Region origin ASes present in the Internet Routing Table: 4459
APNIC Prefixes per ASN: 18.72
APNIC Region origin ASes announcing only one prefix: 1264
APNIC Region transit ASes present in the Internet Routing Table: 691
Average APNIC Region AS path length visible: 5.4
Max APNIC Region AS path length visible: 27
Number of APNIC region 32-bit ASNs visible in the Routing Table: 47
Number of APNIC addresses announced to Internet: 630082753
Equivalent to 37 /8s, 142 /16s and 76 /24s
Percentage of available APNIC address space announced: 79.9
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: 143681
Total ARIN prefixes after maximum aggregation: 73402
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 115628
Unique aggregates announced from the ARIN address blocks: 45813
ARIN Region origin ASes present in the Internet Routing Table: 14431
ARIN Prefixes per ASN: 8.01
ARIN Region origin ASes announcing only one prefix: 5497
ARIN Region transit ASes present in the Internet Routing Table: 1501
Average ARIN Region AS path length visible: 4.4
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: 801975576
Equivalent to 47 /8s, 205 /16s and 45 /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: 88301
Total RIPE prefixes after maximum aggregation: 48837
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 80955
Unique aggregates announced from the RIPE address blocks: 51890
RIPE Region origin ASes present in the Internet Routing Table: 15683
RIPE Prefixes per ASN: 5.16
RIPE Region origin ASes announcing only one prefix: 7794
RIPE Region transit ASes present in the Internet Routing Table: 2474
Average RIPE Region AS path length visible: 5.1
Max RIPE Region AS path length visible: 29
Number of RIPE region 32-bit ASNs visible in the Routing Table: 833
Number of RIPE addresses announced to Internet: 475480704
Equivalent to 28 /8s, 87 /16s and 66 /24s
Percentage of available RIPE address space announced: 76.6
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: 33240
Total LACNIC prefixes after maximum aggregation: 7581
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 32322
Unique aggregates announced from the LACNIC address blocks: 16976
LACNIC Region origin ASes present in the Internet Routing Table: 1463
LACNIC Prefixes per ASN: 22.09
LACNIC Region origin ASes announcing only one prefix: 433
LACNIC Region transit ASes present in the Internet Routing Table: 265
Average LACNIC Region AS path length visible: 5.3
Max LACNIC Region AS path length visible: 20
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 228
Number of LACNIC addresses announced to Internet: 84517128
Equivalent to 5 /8s, 9 /16s and 161 /24s
Percentage of available LACNIC address space announced: 56.0
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: 8312
Total AfriNIC prefixes after maximum aggregation: 1915
AfriNIC Deaggregation factor: 4.34
Prefixes being announced from the AfriNIC address blocks: 6388
Unique aggregates announced from the AfriNIC address blocks: 1926
AfriNIC Region origin ASes present in the Internet Routing Table: 459
AfriNIC Prefixes per ASN: 13.92
AfriNIC Region origin ASes announcing only one prefix: 143
AfriNIC Region transit ASes present in the Internet Routing Table: 100
Average AfriNIC Region AS path length visible: 4.0
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23547904
Equivalent to 1 /8s, 103 /16s and 80 /24s
Percentage of available AfriNIC address space announced: 35.1
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 1902 9508 619 Korea Telecom (KIX)
17974 1541 441 38 PT TELEKOMUNIKASI INDONESIA
7545 1537 301 86 TPG Internet Pty Ltd
4755 1470 630 166 Videsh Sanchar Nigam Ltd. Aut
24560 1155 337 187 Bharti Airtel Ltd.
7552 1137 1064 7 Vietel Corporation
9583 1078 80 509 Sify Limited
9829 1040 877 53 BSNL National Internet Backbo
17488 945 170 104 Hathway IP Over Cable Interne
18101 932 116 140 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 3643 3822 256 bellsouth.net, inc.
4323 1969 1081 398 Time Warner Telecom
18566 1919 363 266 Covad Communications
1785 1789 681 123 AppliedTheory Corporation
6478 1711 317 47 AT&T Worldnet Services
20115 1586 1543 633 Charter Communications
19262 1492 4920 307 Verizon Global Networks
7018 1367 6925 892 AT&T WorldNet Services
22773 1338 2897 88 Cox Communications, Inc.
11492 1281 240 15 Cable One
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 1034 798 181 KPNQwest Backbone AS
9116 539 326 30 Goldenlines main autonomous s
6830 519 1780 321 UPC Distribution Services
34984 517 106 179 Tellcom Iletisim Hizmetleri
3292 516 2078 397 TDC Tele Danmark
20940 462 135 352 Akamai Technologies European
29049 451 33 48 AzerSat LLC.
8866 445 134 26 Bulgarian Telecommunication C
12479 430 593 7 Uni2 Autonomous System
3320 426 8152 371 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 1512 278 157 TVCABLE BOGOTA
8151 1380 2710 368 Uninet S.A. de C.V.
28573 1321 992 86 Types of queries are: POCs, o
7303 958 504 152 Telecom Argentina Stet-France
6503 735 354 73 AVANTEL, S.A.
14420 674 54 88 Types of queries are: POCs, o
22047 565 310 15 Types of queries are: POCs, o
3816 525 229 97 COLOMBIA TELECOMUNICACIONES S
7738 516 986 31 Telecomunicacoes da Bahia S.A
13489 516 262 123 Orbitel S.A. E.S.P.
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 821 445 11 TEDATA
24863 792 147 37 LINKdotNET AS number
15475 543 90 8 Nile Online
36992 311 399 15 Etisalat MISR
16637 296 441 87 Johnnic e-Ventures
3741 265 937 226 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 192 17 11 Ci Telecom Autonomous system
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 3643 3822 256 bellsouth.net, inc.
23456 2595 639 1398 >>UNKNOWN<<
4323 1969 1081 398 Time Warner Telecom
18566 1919 363 266 Covad Communications
4766 1902 9508 619 Korea Telecom (KIX)
1785 1789 681 123 AppliedTheory Corporation
6478 1711 317 47 AT&T Worldnet Services
20115 1586 1543 633 Charter Communications
17974 1541 441 38 PT TELEKOMUNIKASI INDONESIA
7545 1537 301 86 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
1785 1789 1666 AppliedTheory Corporation
6478 1711 1664 AT&T Worldnet Services
18566 1919 1653 Covad Communications
4323 1969 1571 Time Warner Telecom
17974 1541 1503 PT TELEKOMUNIKASI INDONESIA
7545 1537 1451 TPG Internet Pty Ltd
10620 1512 1355 TVCABLE BOGOTA
4755 1470 1304 Videsh Sanchar Nigam Ltd. Aut
4766 1902 1283 Korea Telecom (KIX)
11492 1281 1266 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 /8:22 /9:12 /10:28 /11:81 /12:228
/13:461 /14:804 /15:1426 /16:11921 /17:6093 /18:10069
/19:19848 /20:26464 /21:26374 /22:34517 /23:33621 /24:188548
/25:371 /26:353 /27:177 /28:302 /29:272 /30:677
/31:75 /32:647
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2244 3643 bellsouth.net, inc.
18566 1876 1919 Covad Communications
6478 1665 1711 AT&T Worldnet Services
10620 1402 1512 TVCABLE BOGOTA
23456 1273 2595 >>UNKNOWN<<
11492 1227 1281 Cable One
7011 1061 1160 Citizens Utilities
1785 1051 1789 AppliedTheory Corporation
286 894 1034 KPNQwest Backbone AS
4323 883 1969 Time Warner Telecom
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:281 2:72 4:20 5:1 6:3 8:338
12:1982 13:1 14:463 15:15 16:3 17:8
20:10 23:6 24:1664 27:776 31:364 32:126
33:4 34:2 37:1 38:740 40:102 41:2541
42:6 44:3 46:933 47:3 49:198 50:429
52:13 54:2 55:7 56:2 57:39 58:838
59:482 60:387 61:1164 62:1062 63:1953 64:3968
65:2294 66:4174 67:1895 68:1268 69:3100 70:752
71:356 72:1926 73:3 74:2408 75:319 76:349
77:907 78:703 79:480 80:1101 81:846 82:512
83:459 84:696 85:1081 86:608 87:778 88:337
89:1574 90:203 91:3815 92:520 93:1077 94:1311
95:827 96:507 97:250 98:865 99:35 101:60
103:37 106:1 107:7 108:85 109:961 110:599
111:705 112:304 113:400 114:539 115:681 116:972
117:693 118:788 119:1135 120:311 121:673 122:1627
123:980 124:1267 125:1216 128:262 129:176 130:164
131:571 132:109 133:19 134:214 135:48 136:212
137:143 138:301 139:122 140:481 141:239 142:407
143:403 144:485 145:54 146:448 147:221 148:594
149:242 150:170 151:186 152:328 153:178 154:3
155:396 156:194 157:353 158:138 159:381 160:317
161:207 162:282 163:165 164:500 165:373 166:519
167:428 168:729 169:156 170:804 171:77 172:1
173:1576 174:554 175:372 176:130 177:148 178:1000
180:854 181:17 182:456 183:212 184:374 185:1
186:1215 187:779 188:868 189:909 190:4841 192:5877
193:4922 194:3548 195:3127 196:1240 197:19 198:3604
199:3924 200:5544 201:1482 202:8288 203:8407 204:4181
205:2328 206:2759 207:2883 208:3982 209:3485 210:2728
211:1431 212:2042 213:1787 214:726 215:72 216:4947
217:1642 218:550 219:367 220:1205 221:492 222:315
223:149
End of report
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