Routing Table Report 00:00 GMT Tue 23 Aug, 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: 371896
Prefixes after maximum aggregation: 167781
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 182711
Total ASes present in the Internet Routing Table: 38595
Prefixes per ASN: 9.64
Origin-only ASes present in the Internet Routing Table: 32002
Origin ASes announcing only one prefix: 15381
Transit ASes present in the Internet Routing Table: 5244
Transit-only ASes present in the Internet Routing Table: 147
Average AS path length visible in the Internet Routing Table: 4.0
Max AS path length visible: 34
Max AS path prepend of ASN (22394) 31
Prefixes from unregistered ASNs in the Routing Table: 4260
Unregistered ASNs in the Routing Table: 648
Number of 32-bit ASNs allocated by the RIRs: 1669
Number of 32-bit ASNs visible in the Routing Table: 1349
Prefixes from 32-bit ASNs in the Routing Table: 3114
Special use prefixes present in the Routing Table: 79
Prefixes being announced from unallocated address space: 110
Number of addresses announced to Internet: 2470604303
Equivalent to 147 /8s, 66 /16s and 110 /24s
Percentage of available address space announced: 66.7
Percentage of allocated address space announced: 66.7
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 91.2
Total number of prefixes smaller than registry allocations: 154344
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 90150
Total APNIC prefixes after maximum aggregation: 29319
APNIC Deaggregation factor: 3.07
Prefixes being announced from the APNIC address blocks: 86774
Unique aggregates announced from the APNIC address blocks: 37745
APNIC Region origin ASes present in the Internet Routing Table: 4524
APNIC Prefixes per ASN: 19.18
APNIC Region origin ASes announcing only one prefix: 1256
APNIC Region transit ASes present in the Internet Routing Table: 715
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: 74
Number of APNIC addresses announced to Internet: 624579840
Equivalent to 37 /8s, 58 /16s and 85 /24s
Percentage of available APNIC address space announced: 79.2
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: 145644
Total ARIN prefixes after maximum aggregation: 75348
ARIN Deaggregation factor: 1.93
Prefixes being announced from the ARIN address blocks: 117251
Unique aggregates announced from the ARIN address blocks: 47061
ARIN Region origin ASes present in the Internet Routing Table: 14625
ARIN Prefixes per ASN: 8.02
ARIN Region origin ASes announcing only one prefix: 5610
ARIN Region transit ASes present in the Internet Routing Table: 1528
Average ARIN Region AS path length visible: 3.6
Max ARIN Region AS path length visible: 34
Number of ARIN region 32-bit ASNs visible in the Routing Table: 12
Number of ARIN addresses announced to Internet: 803886360
Equivalent to 47 /8s, 234 /16s and 85 /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: 89784
Total RIPE prefixes after maximum aggregation: 49910
RIPE Deaggregation factor: 1.80
Prefixes being announced from the RIPE address blocks: 82163
Unique aggregates announced from the RIPE address blocks: 53522
RIPE Region origin ASes present in the Internet Routing Table: 15916
RIPE Prefixes per ASN: 5.16
RIPE Region origin ASes announcing only one prefix: 7919
RIPE Region transit ASes present in the Internet Routing Table: 2532
Average RIPE Region AS path length visible: 4.1
Max RIPE Region AS path length visible: 32
Number of RIPE region 32-bit ASNs visible in the Routing Table: 967
Number of RIPE addresses announced to Internet: 488369868
Equivalent to 29 /8s, 27 /16s and 238 /24s
Percentage of available RIPE address space announced: 78.7
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: 34589
Total LACNIC prefixes after maximum aggregation: 7694
LACNIC Deaggregation factor: 4.50
Prefixes being announced from the LACNIC address blocks: 33757
Unique aggregates announced from the LACNIC address blocks: 17345
LACNIC Region origin ASes present in the Internet Routing Table: 1502
LACNIC Prefixes per ASN: 22.47
LACNIC Region origin ASes announcing only one prefix: 446
LACNIC Region transit ASes present in the Internet Routing Table: 279
Average LACNIC Region AS path length visible: 4.2
Max LACNIC Region AS path length visible: 20
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 292
Number of LACNIC addresses announced to Internet: 87682824
Equivalent to 5 /8s, 57 /16s and 239 /24s
Percentage of available LACNIC address space announced: 58.1
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: 8409
Total AfriNIC prefixes after maximum aggregation: 2074
AfriNIC Deaggregation factor: 4.05
Prefixes being announced from the AfriNIC address blocks: 6505
Unique aggregates announced from the AfriNIC address blocks: 2091
AfriNIC Region origin ASes present in the Internet Routing Table: 484
AfriNIC Prefixes per ASN: 13.44
AfriNIC Region origin ASes announcing only one prefix: 150
AfriNIC Region transit ASes present in the Internet Routing Table: 103
Average AfriNIC Region AS path length visible: 4.1
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: 26844416
Equivalent to 1 /8s, 153 /16s and 157 /24s
Percentage of available AfriNIC address space announced: 40.0
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 1936 11054 646 Korea Telecom (KIX)
17974 1820 516 31 PT TELEKOMUNIKASI INDONESIA
7545 1574 301 84 TPG Internet Pty Ltd
4755 1528 374 163 Videsh Sanchar Nigam Ltd. Aut
7552 1412 1064 7 Vietel Corporation
24560 1198 336 189 Bharti Airtel Ltd.
9829 1153 989 28 BSNL National Internet Backbo
9583 1076 79 496 Sify Limited
17488 1024 188 142 Hathway IP Over Cable Interne
4808 1010 2048 287 CNCGROUP IP network: China169
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 3583 3817 228 bellsouth.net, inc.
18566 1912 364 240 Covad Communications
1785 1820 681 124 AppliedTheory Corporation
4323 1614 1101 397 Time Warner Telecom
7029 1608 1029 207 Windstream Communications Inc
20115 1586 1537 630 Charter Communications
22773 1438 2903 97 Cox Communications, Inc.
19262 1405 4778 395 Verizon Global Networks
7018 1363 7084 896 AT&T WorldNet Services
2386 1232 516 892 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 1038 798 193 KPNQwest Backbone AS
34984 541 107 183 Tellcom Iletisim Hizmetleri
9116 540 326 31 Goldenlines main autonomous s
3292 520 2080 404 TDC Tele Danmark
6830 513 1788 317 UPC Distribution Services
20940 481 138 373 Akamai Technologies European
8866 458 133 26 Bulgarian Telecommunication C
12479 457 593 7 Uni2 Autonomous System
3320 424 8151 370 Deutsche Telekom AG
29049 423 31 57 AzerSat LLC.
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 1591 294 163 TVCABLE BOGOTA
8151 1436 2751 352 Uninet S.A. de C.V.
28573 1259 996 67 Types of queries are: POCs, o
7303 1064 578 176 Telecom Argentina Stet-France
6503 712 450 76 AVANTEL, S.A.
14420 707 56 86 Types of queries are: POCs, o
22047 578 322 17 Types of queries are: POCs, o
10481 548 430 20 Prima S.A.
3816 533 232 97 COLOMBIA TELECOMUNICACIONES S
27947 529 53 54 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
24863 809 145 58 LINKdotNET AS number
8452 641 445 11 TEDATA
15475 512 74 8 Nile Online
36992 302 415 14 Etisalat MISR
3741 265 937 226 The Internet Solution
6713 244 519 14 Itissalat Al-MAGHRIB
33776 226 13 8 Starcomms Nigeria Limited
15706 219 32 6 Sudatel Internet Exchange Aut
12258 195 28 62 YEBO-AS
24835 179 78 10 RAYA Telecom - Egypt
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 3583 3817 228 bellsouth.net, inc.
23456 3114 741 1675 >>UNKNOWN<<
4766 1936 11054 646 Korea Telecom (KIX)
18566 1912 364 240 Covad Communications
1785 1820 681 124 AppliedTheory Corporation
17974 1820 516 31 PT TELEKOMUNIKASI INDONESIA
4323 1614 1101 397 Time Warner Telecom
7029 1608 1029 207 Windstream Communications Inc
10620 1591 294 163 TVCABLE BOGOTA
20115 1586 1537 630 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
17974 1820 1789 PT TELEKOMUNIKASI INDONESIA
1785 1820 1696 AppliedTheory Corporation
18566 1912 1672 Covad Communications
7545 1574 1490 TPG Internet Pty Ltd
23456 3114 1439 >>UNKNOWN<<
10620 1591 1428 TVCABLE BOGOTA
7552 1412 1405 Vietel Corporation
7029 1608 1401 Windstream Communications Inc
4755 1528 1365 Videsh Sanchar Nigam Ltd. Aut
22773 1438 1341 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
26973 UNALLOCATED 12.39.152.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.154.0/23 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.155.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.159.0/24 7018 AT&T WorldNet Servic
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
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 /12:233
/13:460 /14:803 /15:1447 /16:12054 /17:6171 /18:10237
/19:20079 /20:27707 /21:27103 /22:35928 /23:34774 /24:192947
/25:77 /26:86 /27:113 /28:293 /29:124 /30:538
/31:91 /32:491
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2214 3583 bellsouth.net, inc.
18566 1868 1912 Covad Communications
23456 1531 3114 >>UNKNOWN<<
10620 1486 1591 TVCABLE BOGOTA
7029 1293 1608 Windstream Communications Inc
11492 1103 1149 Cable One
7011 1057 1160 Citizens Utilities
1785 1052 1820 AppliedTheory Corporation
22773 933 1438 Cox Communications, Inc.
30036 896 920 Mediacom Communications Corp
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:359 2:45 4:19 5:1 6:3 8:345
12:1960 13:1 14:517 15:15 16:3 17:5
20:10 23:28 24:1688 27:875 31:516 32:149
33:4 34:2 36:4 38:737 40:107 41:2510
42:46 44:3 46:1067 47:3 49:219 50:411
52:13 54:2 55:7 56:2 57:44 58:858
59:501 60:376 61:1182 62:1096 63:1956 64:4051
65:2304 66:3978 67:1949 68:1288 69:3212 70:824
71:372 72:1875 73:1 74:2487 75:342 76:347
77:864 78:710 79:489 80:1129 81:829 82:511
83:482 84:695 85:1084 86:512 87:846 88:341
89:1555 90:224 91:4062 92:526 93:1147 94:1353
95:872 96:422 97:267 98:940 99:37 101:79
103:220 106:69 107:34 108:82 109:1020 110:644
111:729 112:306 113:414 114:560 115:696 116:1014
117:680 118:878 119:1192 120:316 121:706 122:1610
123:985 124:1316 125:1319 128:246 129:179 130:171
131:582 132:118 133:21 134:214 135:54 136:190
137:137 138:296 139:129 140:487 141:277 142:390
143:420 144:489 145:59 146:460 147:231 148:699
149:252 150:200 151:188 152:441 153:185 154:5
155:401 156:200 157:331 158:135 159:458 160:320
161:206 162:328 163:166 164:515 165:397 166:533
167:435 168:747 169:154 170:844 171:82 172:1
173:1665 174:627 175:396 176:156 177:221 178:1001
180:941 181:25 182:533 183:241 184:338 185:1
186:1369 187:726 188:936 189:909 190:5117 192:5952
193:5000 194:3556 195:3125 196:1240 197:143 198:3600
199:4060 200:5516 201:1487 202:8372 203:8443 204:4254
205:2346 206:2736 207:2811 208:4113 209:3494 210:2695
211:1464 212:2134 213:1778 214:769 215:70 216:4868
217:1616 218:554 219:355 220:1219 221:513 222:360
223:244
End of report
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