Routing Table Report 00:00 GMT Mon 06 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: 363568
Prefixes after maximum aggregation: 163854
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 178105
Total ASes present in the Internet Routing Table: 37812
Prefixes per ASN: 9.62
Origin-only ASes present in the Internet Routing Table: 31673
Origin ASes announcing only one prefix: 15118
Transit ASes present in the Internet Routing Table: 5004
Transit-only ASes present in the Internet Routing Table: 127
Average AS path length visible in the Internet Routing Table: 3.9
Max AS path length visible: 25
Max AS path prepend of ASN (36992) 22
Prefixes from unregistered ASNs in the Routing Table: 3506
Unregistered ASNs in the Routing Table: 429
Number of 32-bit ASNs allocated by the RIRs: 1431
Number of 32-bit ASNs visible in the Routing Table: 1135
Prefixes from 32-bit ASNs in the Routing Table: 2635
Special use prefixes present in the Routing Table: 78
Prefixes being announced from unallocated address space: 165
Number of addresses announced to Internet: 2452271976
Equivalent to 146 /8s, 42 /16s and 179 /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: 151552
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 86730
Total APNIC prefixes after maximum aggregation: 28969
APNIC Deaggregation factor: 2.99
Prefixes being announced from the APNIC address blocks: 83294
Unique aggregates announced from the APNIC address blocks: 36613
APNIC Region origin ASes present in the Internet Routing Table: 4459
APNIC Prefixes per ASN: 18.68
APNIC Region origin ASes announcing only one prefix: 1260
APNIC Region transit ASes present in the Internet Routing Table: 690
Average APNIC Region AS path length visible: 4.1
Max APNIC Region AS path length visible: 19
Number of APNIC region 32-bit ASNs visible in the Routing Table: 47
Number of APNIC addresses announced to Internet: 619740354
Equivalent to 36 /8s, 240 /16s and 124 /24s
Percentage of available APNIC address space announced: 78.6
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: 143767
Total ARIN prefixes after maximum aggregation: 73598
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 115526
Unique aggregates announced from the ARIN address blocks: 46152
ARIN Region origin ASes present in the Internet Routing Table: 14426
ARIN Prefixes per ASN: 8.01
ARIN Region origin ASes announcing only one prefix: 5493
ARIN Region transit ASes present in the Internet Routing Table: 1473
Average ARIN Region AS path length visible: 3.8
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: 802022168
Equivalent to 47 /8s, 205 /16s and 227 /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: 88560
Total RIPE prefixes after maximum aggregation: 48892
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 81230
Unique aggregates announced from the RIPE address blocks: 51954
RIPE Region origin ASes present in the Internet Routing Table: 15697
RIPE Prefixes per ASN: 5.17
RIPE Region origin ASes announcing only one prefix: 7794
RIPE Region transit ASes present in the Internet Routing Table: 2419
Average RIPE Region AS path length visible: 3.7
Max RIPE Region AS path length visible: 20
Number of RIPE region 32-bit ASNs visible in the Routing Table: 840
Number of RIPE addresses announced to Internet: 476051436
Equivalent to 28 /8s, 95 /16s and 247 /24s
Percentage of available RIPE address space announced: 76.7
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: 33145
Total LACNIC prefixes after maximum aggregation: 7534
LACNIC Deaggregation factor: 4.40
Prefixes being announced from the LACNIC address blocks: 32397
Unique aggregates announced from the LACNIC address blocks: 16959
LACNIC Region origin ASes present in the Internet Routing Table: 1461
LACNIC Prefixes per ASN: 22.17
LACNIC Region origin ASes announcing only one prefix: 433
LACNIC Region transit ASes present in the Internet Routing Table: 257
Average LACNIC Region AS path length visible: 4.6
Max LACNIC Region AS path length visible: 20
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 231
Number of LACNIC addresses announced to Internet: 84710920
Equivalent to 5 /8s, 12 /16s and 150 /24s
Percentage of available LACNIC address space announced: 56.1
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: 8414
Total AfriNIC prefixes after maximum aggregation: 1929
AfriNIC Deaggregation factor: 4.36
Prefixes being announced from the AfriNIC address blocks: 6379
Unique aggregates announced from the AfriNIC address blocks: 1925
AfriNIC Region origin ASes present in the Internet Routing Table: 457
AfriNIC Prefixes per ASN: 13.96
AfriNIC Region origin ASes announcing only one prefix: 138
AfriNIC Region transit ASes present in the Internet Routing Table: 104
Average AfriNIC Region AS path length visible: 4.2
Max AfriNIC Region AS path length visible: 25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23589888
Equivalent to 1 /8s, 103 /16s and 244 /24s
Percentage of available AfriNIC address space announced: 35.2
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 1898 9488 616 Korea Telecom (KIX)
7545 1538 301 87 TPG Internet Pty Ltd
17974 1536 441 38 PT TELEKOMUNIKASI INDONESIA
4755 1468 374 163 Videsh Sanchar Nigam Ltd. Aut
24560 1155 337 187 Bharti Airtel Ltd.
7552 1141 1064 7 Vietel Corporation
9583 1083 81 511 Sify Limited
9829 1041 878 59 BSNL National Internet Backbo
4808 1036 2082 296 CNCGROUP IP network: China169
17488 945 170 104 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 3641 3822 256 bellsouth.net, inc.
4323 1978 1097 401 Time Warner Telecom
18566 1919 363 266 Covad Communications
1785 1791 681 123 AppliedTheory Corporation
6478 1716 318 45 AT&T Worldnet Services
20115 1586 1543 633 Charter Communications
19262 1493 4936 308 Verizon Global Networks
7018 1367 7068 898 AT&T WorldNet Services
22773 1338 2897 88 Cox Communications, Inc.
2386 1271 536 913 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 1047 798 192 KPNQwest Backbone AS
9116 539 326 30 Goldenlines main autonomous s
6830 518 1780 320 UPC Distribution Services
34984 517 106 179 Tellcom Iletisim Hizmetleri
3292 516 2078 397 TDC Tele Danmark
29049 451 33 48 AzerSat LLC.
8866 445 134 26 Bulgarian Telecommunication C
20940 436 122 339 Akamai Technologies European
12479 431 593 7 Uni2 Autonomous System
3320 425 8152 370 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 1379 2707 360 Uninet S.A. de C.V.
28573 1322 992 86 Types of queries are: POCs, o
7303 955 504 151 Telecom Argentina Stet-France
6503 737 354 74 AVANTEL, S.A.
14420 675 54 89 Types of queries are: POCs, o
22047 565 310 15 Types of queries are: POCs, o
3816 529 231 92 COLOMBIA TELECOMUNICACIONES S
7738 516 986 31 Telecomunicacoes da Bahia S.A
13489 516 262 125 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 798 445 11 TEDATA
24863 794 147 38 LINKdotNET AS number
15475 544 90 8 Nile Online
16637 296 441 87 Johnnic e-Ventures
36992 289 399 14 Etisalat MISR
3741 265 937 226 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
33776 217 12 11 Starcomms Nigeria Limited
24835 211 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 3641 3822 256 bellsouth.net, inc.
23456 2635 645 1419 >>UNKNOWN<<
4323 1978 1097 401 Time Warner Telecom
18566 1919 363 266 Covad Communications
4766 1898 9488 616 Korea Telecom (KIX)
1785 1791 681 123 AppliedTheory Corporation
6478 1716 318 45 AT&T Worldnet Services
20115 1586 1543 633 Charter Communications
7545 1538 301 87 TPG Internet Pty Ltd
17974 1536 441 38 PT TELEKOMUNIKASI INDONESIA
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
6478 1716 1671 AT&T Worldnet Services
1785 1791 1668 AppliedTheory Corporation
18566 1919 1653 Covad Communications
4323 1978 1577 Time Warner Telecom
17974 1536 1498 PT TELEKOMUNIKASI INDONESIA
7545 1538 1451 TPG Internet Pty Ltd
10620 1512 1355 TVCABLE BOGOTA
4755 1468 1305 Videsh Sanchar Nigam Ltd. Aut
4766 1898 1282 Korea Telecom (KIX)
22773 1338 1250 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 1239 Sprint
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 /8:20 /9:12 /10:28 /11:81 /12:228
/13:461 /14:804 /15:1423 /16:12025 /17:6096 /18:10064
/19:19860 /20:26517 /21:26414 /22:34570 /23:33651 /24:188444
/25:369 /26:353 /27:182 /28:301 /29:280 /30:679
/31:75 /32:631
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2243 3641 bellsouth.net, inc.
18566 1876 1919 Covad Communications
6478 1670 1716 AT&T Worldnet Services
10620 1402 1512 TVCABLE BOGOTA
23456 1301 2635 >>UNKNOWN<<
11492 1107 1153 Cable One
7011 1062 1161 Citizens Utilities
1785 1050 1791 AppliedTheory Corporation
286 905 1047 KPNQwest Backbone AS
4323 889 1978 Time Warner Telecom
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:277 2:69 4:20 5:1 6:3 8:339
12:1983 13:1 14:462 15:15 16:3 17:8
20:10 23:11 24:1627 27:769 31:422 32:126
33:4 34:2 37:1 38:738 40:102 41:2532
42:6 44:3 46:941 47:3 49:198 50:435
52:13 54:2 55:3 56:2 57:39 58:843
59:477 60:387 61:1122 62:1065 63:1949 64:3972
65:2289 66:4173 67:1896 68:1268 69:3089 70:749
71:357 72:1916 73:3 74:2410 75:320 76:349
77:915 78:706 79:481 80:1102 81:843 82:509
83:463 84:685 85:1083 86:608 87:778 88:337
89:1575 90:203 91:3826 92:525 93:1075 94:1318
95:839 96:507 97:250 98:865 99:35 101:61
103:51 106:1 107:7 108:85 109:967 110:598
111:710 112:303 113:403 114:539 115:683 116:969
117:692 118:796 119:1129 120:312 121:672 122:1625
123:952 124:1268 125:1215 128:262 129:174 130:164
131:573 132:108 133:19 134:214 135:48 136:210
137:144 138:300 139:121 140:480 141:239 142:407
143:403 144:489 145:54 146:441 147:221 148:595
149:244 150:171 151:184 152:328 153:179 154:3
155:397 156:198 157:353 158:138 159:380 160:316
161:207 162:281 163:164 164:503 165:371 166:515
167:427 168:728 169:156 170:801 171:77 172:1
173:1580 174:555 175:370 176:130 177:150 178:987
180:855 181:18 182:460 183:212 184:375 185:1
186:1219 187:776 188:866 189:894 190:4865 192:5876
193:4922 194:3552 195:3136 196:1236 197:19 198:3589
199:3927 200:5542 201:1481 202:8272 203:8335 204:4187
205:2324 206:2764 207:2881 208:3987 209:3488 210:2717
211:1401 212:2065 213:1783 214:731 215:72 216:4963
217:1640 218:552 219:366 220:1207 221:492 222:316
223:150
End of report
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