Routing Table Report 00:00 GMT Fri 19 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: 371932
Prefixes after maximum aggregation: 167619
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 182683
Total ASes present in the Internet Routing Table: 38546
Prefixes per ASN: 9.65
Origin-only ASes present in the Internet Routing Table: 31994
Origin ASes announcing only one prefix: 15387
Transit ASes present in the Internet Routing Table: 5225
Transit-only ASes present in the Internet Routing Table: 145
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: 4232
Unregistered ASNs in the Routing Table: 643
Number of 32-bit ASNs allocated by the RIRs: 1653
Number of 32-bit ASNs visible in the Routing Table: 1327
Prefixes from 32-bit ASNs in the Routing Table: 3077
Special use prefixes present in the Routing Table: 79
Prefixes being announced from unallocated address space: 109
Number of addresses announced to Internet: 2470200583
Equivalent to 147 /8s, 60 /16s and 69 /24s
Percentage of available address space announced: 66.6
Percentage of allocated address space announced: 66.6
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: 154346
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 90293
Total APNIC prefixes after maximum aggregation: 29354
APNIC Deaggregation factor: 3.08
Prefixes being announced from the APNIC address blocks: 86898
Unique aggregates announced from the APNIC address blocks: 37761
APNIC Region origin ASes present in the Internet Routing Table: 4523
APNIC Prefixes per ASN: 19.21
APNIC Region origin ASes announcing only one prefix: 1260
APNIC Region transit ASes present in the Internet Routing Table: 713
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: 72
Number of APNIC addresses announced to Internet: 624469760
Equivalent to 37 /8s, 56 /16s and 167 /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: 145727
Total ARIN prefixes after maximum aggregation: 75326
ARIN Deaggregation factor: 1.93
Prefixes being announced from the ARIN address blocks: 117302
Unique aggregates announced from the ARIN address blocks: 47100
ARIN Region origin ASes present in the Internet Routing Table: 14605
ARIN Prefixes per ASN: 8.03
ARIN Region origin ASes announcing only one prefix: 5610
ARIN Region transit ASes present in the Internet Routing Table: 1511
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: 803814936
Equivalent to 47 /8s, 233 /16s and 62 /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: 89716
Total RIPE prefixes after maximum aggregation: 49883
RIPE Deaggregation factor: 1.80
Prefixes being announced from the RIPE address blocks: 82091
Unique aggregates announced from the RIPE address blocks: 53484
RIPE Region origin ASes present in the Internet Routing Table: 15912
RIPE Prefixes per ASN: 5.16
RIPE Region origin ASes announcing only one prefix: 7916
RIPE Region transit ASes present in the Internet Routing Table: 2529
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: 953
Number of RIPE addresses announced to Internet: 488296652
Equivalent to 29 /8s, 26 /16s and 208 /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: 34545
Total LACNIC prefixes after maximum aggregation: 7617
LACNIC Deaggregation factor: 4.54
Prefixes being announced from the LACNIC address blocks: 33716
Unique aggregates announced from the LACNIC address blocks: 17320
LACNIC Region origin ASes present in the Internet Routing Table: 1501
LACNIC Prefixes per ASN: 22.46
LACNIC Region origin ASes announcing only one prefix: 449
LACNIC Region transit ASes present in the Internet Routing Table: 276
Average LACNIC Region AS path length visible: 4.1
Max LACNIC Region AS path length visible: 20
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 286
Number of LACNIC addresses announced to Internet: 87601152
Equivalent to 5 /8s, 56 /16s and 176 /24s
Percentage of available LACNIC address space announced: 58.0
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: 8368
Total AfriNIC prefixes after maximum aggregation: 2048
AfriNIC Deaggregation factor: 4.09
Prefixes being announced from the AfriNIC address blocks: 6503
Unique aggregates announced from the AfriNIC address blocks: 2092
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: 152
AfriNIC Region transit ASes present in the Internet Routing Table: 108
Average AfriNIC Region AS path length visible: 4.3
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: 26916352
Equivalent to 1 /8s, 154 /16s and 182 /24s
Percentage of available AfriNIC address space announced: 40.1
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 1938 11054 647 Korea Telecom (KIX)
17974 1903 516 31 PT TELEKOMUNIKASI INDONESIA
7545 1573 301 82 TPG Internet Pty Ltd
4755 1529 374 165 Videsh Sanchar Nigam Ltd. Aut
7552 1412 1064 7 Vietel Corporation
24560 1198 336 187 Bharti Airtel Ltd.
9829 1156 989 28 BSNL National Internet Backbo
9583 1071 78 493 Sify Limited
17488 1017 188 139 Hathway IP Over Cable Interne
4808 1011 2056 288 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 227 bellsouth.net, inc.
18566 1912 364 240 Covad Communications
1785 1821 681 123 AppliedTheory Corporation
4323 1618 1102 401 Time Warner Telecom
7029 1612 1029 208 Windstream Communications Inc
20115 1586 1537 630 Charter Communications
22773 1433 2903 97 Cox Communications, Inc.
19262 1405 4778 395 Verizon Global Networks
7018 1360 7083 892 AT&T WorldNet Services
2386 1232 516 893 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 1039 798 193 KPNQwest Backbone AS
9116 540 326 31 Goldenlines main autonomous s
34984 540 107 183 Tellcom Iletisim Hizmetleri
3292 516 2079 401 TDC Tele Danmark
6830 512 1787 316 UPC Distribution Services
20940 476 136 369 Akamai Technologies European
8866 458 133 26 Bulgarian Telecommunication C
12479 456 593 7 Uni2 Autonomous System
29049 423 31 57 AzerSat LLC.
3320 422 8150 368 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 1590 294 162 TVCABLE BOGOTA
8151 1442 2749 354 Uninet S.A. de C.V.
28573 1257 996 67 Types of queries are: POCs, o
7303 1064 578 176 Telecom Argentina Stet-France
6503 751 450 77 AVANTEL, S.A.
14420 705 56 85 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 519 54 49 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 642 445 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 227 bellsouth.net, inc.
23456 3077 731 1652 >>UNKNOWN<<
4766 1938 11054 647 Korea Telecom (KIX)
18566 1912 364 240 Covad Communications
17974 1903 516 31 PT TELEKOMUNIKASI INDONESIA
1785 1821 681 123 AppliedTheory Corporation
4323 1618 1102 401 Time Warner Telecom
7029 1612 1029 208 Windstream Communications Inc
10620 1590 294 162 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 1903 1872 PT TELEKOMUNIKASI INDONESIA
1785 1821 1698 AppliedTheory Corporation
18566 1912 1672 Covad Communications
7545 1573 1491 TPG Internet Pty Ltd
10620 1590 1428 TVCABLE BOGOTA
23456 3077 1425 >>UNKNOWN<<
7552 1412 1405 Vietel Corporation
7029 1612 1404 Windstream Communications Inc
4755 1529 1364 Videsh Sanchar Nigam Ltd. Aut
22773 1433 1336 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 /15:1446 /16:12055 /17:6172 /18:10240
/19:20058 /20:27699 /21:27069 /22:35898 /23:34819 /24:193098
/25:78 /26:86 /27:113 /28:284 /29:72 /30:531
/31:92 /32:486
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2215 3583 bellsouth.net, inc.
18566 1868 1912 Covad Communications
23456 1511 3077 >>UNKNOWN<<
10620 1485 1590 TVCABLE BOGOTA
7029 1297 1612 Windstream Communications Inc
11492 1102 1148 Cable One
7011 1058 1161 Citizens Utilities
1785 1052 1821 AppliedTheory Corporation
22773 929 1433 Cox Communications, Inc.
30036 911 934 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 2:47 4:19 5:1 6:3 8:343
12:1960 13:1 14:517 15:15 16:3 17:5
20:10 23:23 24:1688 27:872 31:527 32:149
33:4 34:2 36:4 38:736 40:107 41:2530
42:45 44:3 46:1061 47:3 49:219 50:409
52:13 54:2 55:9 56:2 57:45 58:865
59:500 60:376 61:1184 62:1094 63:1953 64:4055
65:2302 66:3972 67:1951 68:1286 69:3195 70:825
71:373 72:1877 73:1 74:2486 75:341 76:347
77:864 78:709 79:489 80:1134 81:834 82:512
83:482 84:701 85:1080 86:515 87:845 88:339
89:1555 90:224 91:4045 92:521 93:1147 94:1341
95:875 96:423 97:267 98:938 99:37 101:78
103:210 106:69 107:32 108:81 109:1020 110:646
111:732 112:305 113:412 114:560 115:694 116:1013
117:686 118:876 119:1186 120:314 121:706 122:1606
123:985 124:1313 125:1339 128:227 129:179 130:171
131:580 132:116 133:21 134:214 135:51 136:216
137:137 138:295 139:129 140:489 141:277 142:385
143:446 144:488 145:58 146:463 147:227 148:699
149:253 150:201 151:190 152:441 153:184 154:5
155:401 156:200 157:332 158:133 159:458 160:319
161:208 162:327 163:188 164:516 165:397 166:535
167:435 168:746 169:154 170:844 171:81 172:1
173:1667 174:623 175:392 176:154 177:224 178:961
180:935 181:26 182:533 183:242 184:364 185:1
186:1365 187:742 188:932 189:927 190:5117 192:5954
193:4997 194:3552 195:3116 196:1208 197:127 198:3601
199:4052 200:5511 201:1490 202:8423 203:8468 204:4252
205:2367 206:2739 207:2816 208:4123 209:3499 210:2704
211:1465 212:2134 213:1781 214:781 215:70 216:4922
217:1614 218:556 219:355 220:1223 221:516 222:358
223:243
End of report
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