Routing Table Report 00:00 GMT Thu 19 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: 361942
Prefixes after maximum aggregation: 163225
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 176565
Total ASes present in the Internet Routing Table: 37611
Prefixes per ASN: 9.62
Origin-only ASes present in the Internet Routing Table: 31443
Origin ASes announcing only one prefix: 15062
Transit ASes present in the Internet Routing Table: 5090
Transit-only ASes present in the Internet Routing Table: 129
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 33
Max AS path prepend of ASN (48687) 24
Prefixes from unregistered ASNs in the Routing Table: 3205
Unregistered ASNs in the Routing Table: 358
Number of 32-bit ASNs allocated by the RIRs: 1359
Number of 32-bit ASNs visible in the Routing Table: 1078
Prefixes from 32-bit ASNs in the Routing Table: 2442
Special use prefixes present in the Routing Table: 78
Prefixes being announced from unallocated address space: 172
Number of addresses announced to Internet: 2432541767
Equivalent to 144 /8s, 253 /16s and 164 /24s
Percentage of available address space announced: 65.6
Percentage of allocated address space announced: 65.6
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: 149958
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87597
Total APNIC prefixes after maximum aggregation: 28910
APNIC Deaggregation factor: 3.03
Prefixes being announced from the APNIC address blocks: 84042
Unique aggregates announced from the APNIC address blocks: 36688
APNIC Region origin ASes present in the Internet Routing Table: 4439
APNIC Prefixes per ASN: 18.93
APNIC Region origin ASes announcing only one prefix: 1248
APNIC Region transit ASes present in the Internet Routing Table: 699
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: 46
Number of APNIC addresses announced to Internet: 615156417
Equivalent to 36 /8s, 170 /16s and 138 /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: 143293
Total ARIN prefixes after maximum aggregation: 73548
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 115271
Unique aggregates announced from the ARIN address blocks: 45529
ARIN Region origin ASes present in the Internet Routing Table: 14389
ARIN Prefixes per ASN: 8.01
ARIN Region origin ASes announcing only one prefix: 5481
ARIN Region transit ASes present in the Internet Routing Table: 1473
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: 801595928
Equivalent to 47 /8s, 199 /16s and 98 /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: 87546
Total RIPE prefixes after maximum aggregation: 48582
RIPE Deaggregation factor: 1.80
Prefixes being announced from the RIPE address blocks: 80231
Unique aggregates announced from the RIPE address blocks: 51390
RIPE Region origin ASes present in the Internet Routing Table: 15622
RIPE Prefixes per ASN: 5.14
RIPE Region origin ASes announcing only one prefix: 7764
RIPE Region transit ASes present in the Internet Routing Table: 2476
Average RIPE Region AS path length visible: 4.2
Max RIPE Region AS path length visible: 33
Number of RIPE region 32-bit ASNs visible in the Routing Table: 799
Number of RIPE addresses announced to Internet: 472858828
Equivalent to 28 /8s, 47 /16s and 64 /24s
Percentage of available RIPE address space announced: 76.2
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: 32872
Total LACNIC prefixes after maximum aggregation: 7552
LACNIC Deaggregation factor: 4.35
Prefixes being announced from the LACNIC address blocks: 31888
Unique aggregates announced from the LACNIC address blocks: 16729
LACNIC Region origin ASes present in the Internet Routing Table: 1453
LACNIC Prefixes per ASN: 21.95
LACNIC Region origin ASes announcing only one prefix: 430
LACNIC Region transit ASes present in the Internet Routing Table: 264
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: 216
Number of LACNIC addresses announced to Internet: 83534856
Equivalent to 4 /8s, 250 /16s and 164 /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: 7887
Total AfriNIC prefixes after maximum aggregation: 1883
AfriNIC Deaggregation factor: 4.19
Prefixes being announced from the AfriNIC address blocks: 6203
Unique aggregates announced from the AfriNIC address blocks: 1900
AfriNIC Region origin ASes present in the Internet Routing Table: 450
AfriNIC Prefixes per ASN: 13.78
AfriNIC Region origin ASes announcing only one prefix: 139
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: 5
Number of AfriNIC addresses announced to Internet: 23083008
Equivalent to 1 /8s, 96 /16s and 56 /24s
Percentage of available AfriNIC address space announced: 34.4
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 1894 9501 614 Korea Telecom (KIX)
17974 1828 516 32 PT TELEKOMUNIKASI INDONESIA
7545 1556 301 87 TPG Internet Pty Ltd
4755 1467 374 166 Videsh Sanchar Nigam Ltd. Aut
24560 1149 336 184 Bharti Airtel Ltd.
7552 1123 1064 7 Vietel Corporation
9583 1080 80 511 Sify Limited
9829 1039 874 51 BSNL National Internet Backbo
4808 962 2028 278 CNCGROUP IP network: China169
17488 940 164 97 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 257 bellsouth.net, inc.
4323 1975 1097 397 Time Warner Telecom
18566 1830 357 236 Covad Communications
1785 1788 681 125 AppliedTheory Corporation
6478 1687 314 60 AT&T Worldnet Services
20115 1587 1543 635 Charter Communications
19262 1500 4949 300 Verizon Global Networks
7018 1369 7069 895 AT&T WorldNet Services
22773 1328 2897 86 Cox Communications, Inc.
11492 1279 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 1015 798 176 KPNQwest Backbone AS
9116 539 326 30 Goldenlines main autonomous s
6830 520 1780 320 UPC Distribution Services
3292 513 1998 395 TDC Tele Danmark
34984 512 106 182 Tellcom Iletisim Hizmetleri
20940 464 135 356 Akamai Technologies European
29049 453 33 44 AzerSat LLC.
8866 443 134 26 Bulgarian Telecommunication C
12479 428 577 6 Uni2 Autonomous System
3320 421 8152 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 1477 272 152 TVCABLE BOGOTA
8151 1370 2683 358 Uninet S.A. de C.V.
28573 1311 990 85 Types of queries are: POCs, o
7303 924 470 149 Telecom Argentina Stet-France
6503 733 354 74 AVANTEL, S.A.
14420 667 54 91 Types of queries are: POCs, o
22047 556 310 15 Types of queries are: POCs, o
3816 522 227 99 COLOMBIA TELECOMUNICACIONES S
13489 511 254 116 Orbitel S.A. E.S.P.
27947 496 53 46 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 896 445 11 TEDATA
24863 785 147 38 LINKdotNET AS number
15475 416 90 8 Nile Online
36992 288 331 17 Etisalat MISR
3741 268 985 228 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
33776 213 12 12 Starcomms Nigeria Limited
24835 209 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 257 bellsouth.net, inc.
23456 2442 625 1328 >>UNKNOWN<<
4323 1975 1097 397 Time Warner Telecom
4766 1894 9501 614 Korea Telecom (KIX)
18566 1830 357 236 Covad Communications
17974 1828 516 32 PT TELEKOMUNIKASI INDONESIA
1785 1788 681 125 AppliedTheory Corporation
6478 1687 314 60 AT&T Worldnet Services
20115 1587 1543 635 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 1828 1796 PT TELEKOMUNIKASI INDONESIA
1785 1788 1663 AppliedTheory Corporation
6478 1687 1627 AT&T Worldnet Services
18566 1830 1594 Covad Communications
4323 1975 1578 Time Warner Telecom
7545 1556 1469 TPG Internet Pty Ltd
10620 1477 1325 TVCABLE BOGOTA
4755 1467 1301 Videsh Sanchar Nigam Ltd. Aut
4766 1894 1280 Korea Telecom (KIX)
11492 1279 1264 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.
31.223.232.0/21 47116 IP-Park Kft.
41.190.32.0/23 31856 CABSAS
41.190.34.0/23 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 /14:800 /15:1426 /16:11903 /17:6055 /18:10023
/19:19848 /20:26357 /21:26294 /22:34608 /23:33456 /24:187720
/25:369 /26:350 /27:170 /28:285 /29:169 /30:598
/31:64 /32:619
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2241 3642 bellsouth.net, inc.
18566 1790 1830 Covad Communications
6478 1641 1687 AT&T Worldnet Services
10620 1367 1477 TVCABLE BOGOTA
11492 1225 1279 Cable One
23456 1205 2442 >>UNKNOWN<<
7011 1062 1162 Citizens Utilities
1785 1052 1788 AppliedTheory Corporation
4323 886 1975 Time Warner Telecom
286 875 1015 KPNQwest Backbone AS
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:274 2:67 4:18 5:1 6:3 8:354
12:1993 13:1 14:458 15:15 16:3 17:8
20:10 23:7 24:1657 27:755 31:347 32:126
33:4 34:2 37:1 38:741 40:101 41:2523
42:5 44:3 46:922 47:4 49:192 50:410
52:13 55:7 56:2 57:40 58:847 59:484
60:387 61:1251 62:996 63:1947 64:3950 65:2290
66:4169 67:1887 68:1270 69:3096 70:750 71:357
72:1914 73:3 74:2408 75:323 76:350 77:907
78:693 79:473 80:1079 81:823 82:504 83:459
84:649 85:1076 86:623 87:775 88:331 89:1589
90:202 91:3758 92:517 93:1083 94:1283 95:820
96:504 97:248 98:855 99:35 101:59 103:10
106:1 107:7 108:85 109:952 110:601 111:714
112:320 113:399 114:538 115:667 116:972 117:690
118:818 119:1131 120:308 121:680 122:1623 123:1083
124:1264 125:1225 128:232 129:179 130:164 131:571
132:108 133:19 134:218 135:49 136:214 137:142
138:305 139:124 140:482 141:239 142:406 143:404
144:483 145:54 146:443 147:215 148:590 149:243
150:173 151:186 152:312 153:178 154:3 155:396
156:194 157:353 158:132 159:387 160:317 161:207
162:279 163:163 164:501 165:372 166:505 167:431
168:726 169:154 170:792 171:77 172:1 173:1583
174:554 175:372 177:117 178:903 180:844 181:16
182:444 183:206 184:350 185:1 186:1167 187:734
188:859 189:898 190:4811 192:5826 193:4870 194:3530
195:3120 196:1224 197:17 198:3615 199:3912 200:5533
201:1495 202:8376 203:8482 204:4156 205:2331 206:2748
207:2919 208:3982 209:3463 210:2743 211:1424 212:2030
213:1778 214:724 215:69 216:4856 217:1631 218:567
219:362 220:1202 221:486 222:342 223:146
End of report
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