Routing Table Report 00:00 GMT Fri 25 Feb, 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: 353025
Prefixes after maximum aggregation: 158472
Deaggregation factor: 2.23
Unique aggregates announced to Internet: 171868
Total ASes present in the Internet Routing Table: 35990
Prefixes per ASN: 9.81
Origin-only ASes present in the Internet Routing Table: 31074
Origin ASes announcing only one prefix: 14909
Transit ASes present in the Internet Routing Table: 4916
Transit-only ASes present in the Internet Routing Table: 119
Average AS path length visible in the Internet Routing Table: 4.1
Max AS path length visible: 31
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 413
Unregistered ASNs in the Routing Table: 169
Number of 32-bit ASNs allocated by the RIRs: 1141
Prefixes from 32-bit ASNs in the Routing Table: 2
Special use prefixes present in the Routing Table: 73
Prefixes being announced from unallocated address space: 214
Number of addresses announced to Internet: 2366499199
Equivalent to 141 /8s, 13 /16s and 233 /24s
Percentage of available address space announced: 63.8
Percentage of allocated address space announced: 63.8
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 88.1
Total number of prefixes smaller than registry allocations: 146012
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 84692
Total APNIC prefixes after maximum aggregation: 28392
APNIC Deaggregation factor: 2.98
Prefixes being announced from the APNIC address blocks: 81628
Unique aggregates announced from the APNIC address blocks: 35975
APNIC Region origin ASes present in the Internet Routing Table: 4327
APNIC Prefixes per ASN: 18.86
APNIC Region origin ASes announcing only one prefix: 1219
APNIC Region transit ASes present in the Internet Routing Table: 679
Average APNIC Region AS path length visible: 4.2
Max APNIC Region AS path length visible: 19
Number of APNIC addresses announced to Internet: 592313282
Equivalent to 35 /8s, 77 /16s and 251 /24s
Percentage of available APNIC address space announced: 75.1
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: 142933
Total ARIN prefixes after maximum aggregation: 73670
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 113346
Unique aggregates announced from the ARIN address blocks: 44963
ARIN Region origin ASes present in the Internet Routing Table: 14247
ARIN Prefixes per ASN: 7.96
ARIN Region origin ASes announcing only one prefix: 5392
ARIN Region transit ASes present in the Internet Routing Table: 1458
Average ARIN Region AS path length visible: 3.9
Max ARIN Region AS path length visible: 27
Number of ARIN addresses announced to Internet: 787543705
Equivalent to 46 /8s, 240 /16s and 246 /24s
Percentage of available ARIN address space announced: 62.6
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: 85767
Total RIPE prefixes after maximum aggregation: 47088
RIPE Deaggregation factor: 1.82
Prefixes being announced from the RIPE address blocks: 78246
Unique aggregates announced from the RIPE address blocks: 49247
RIPE Region origin ASes present in the Internet Routing Table: 15367
RIPE Prefixes per ASN: 5.09
RIPE Region origin ASes announcing only one prefix: 7730
RIPE Region transit ASes present in the Internet Routing Table: 2359
Average RIPE Region AS path length visible: 4.1
Max RIPE Region AS path length visible: 29
Number of RIPE addresses announced to Internet: 460894973
Equivalent to 27 /8s, 120 /16s and 178 /24s
Percentage of available RIPE address space announced: 74.2
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: 31930
Total LACNIC prefixes after maximum aggregation: 7400
LACNIC Deaggregation factor: 4.31
Prefixes being announced from the LACNIC address blocks: 30714
Unique aggregates announced from the LACNIC address blocks: 15897
LACNIC Region origin ASes present in the Internet Routing Table: 1437
LACNIC Prefixes per ASN: 21.37
LACNIC Region origin ASes announcing only one prefix: 435
LACNIC Region transit ASes present in the Internet Routing Table: 263
Average LACNIC Region AS path length visible: 4.9
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 80964748
Equivalent to 4 /8s, 211 /16s and 108 /24s
Percentage of available LACNIC address space announced: 53.6
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: 7448
Total AfriNIC prefixes after maximum aggregation: 1809
AfriNIC Deaggregation factor: 4.12
Prefixes being announced from the AfriNIC address blocks: 5858
Unique aggregates announced from the AfriNIC address blocks: 1836
AfriNIC Region origin ASes present in the Internet Routing Table: 434
AfriNIC Prefixes per ASN: 13.50
AfriNIC Region origin ASes announcing only one prefix: 133
AfriNIC Region transit ASes present in the Internet Routing Table: 96
Average AfriNIC Region AS path length visible: 4.4
Max AfriNIC Region AS path length visible: 31
Number of AfriNIC addresses announced to Internet: 21857792
Equivalent to 1 /8s, 77 /16s and 134 /24s
Percentage of available AfriNIC address space announced: 32.6
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 1849 9492 578 Korea Telecom (KIX)
7545 1598 302 87 TPG Internet Pty Ltd
4755 1421 633 164 Videsh Sanchar Nigam Ltd. Aut
17974 1412 475 29 PT TELEKOMUNIKASI INDONESIA
24560 1115 323 184 Bharti Airtel Ltd.
9583 1045 77 488 Sify Limited
4808 988 2072 282 CNCGROUP IP network: China169
17488 959 161 102 Hathway IP Over Cable Interne
18101 932 117 139 Reliance Infocom Ltd Internet
9829 895 761 45 BSNL National Internet Backbo
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 3691 3855 261 bellsouth.net, inc.
4323 2610 1109 405 Time Warner Telecom
19262 1789 4939 283 Verizon Global Networks
1785 1787 697 132 AppliedTheory Corporation
20115 1578 1538 647 Charter Communications
6478 1525 296 68 AT&T Worldnet Services
18566 1447 321 156 Covad Communications
7018 1368 6714 890 AT&T WorldNet Services
2386 1300 554 936 AT&T Data Communications Serv
11492 1285 236 70 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
286 983 713 158 KPNQwest Backbone AS
9116 545 328 32 Goldenlines main autonomous s
6830 515 1780 319 UPC Distribution Services
3292 501 1996 389 TDC Tele Danmark
9198 470 267 15 Kazakhtelecom Corporate Sales
34984 464 98 144 Tellcom Iletisim Hizmetleri
8866 441 133 23 Bulgarian Telecommunication C
20940 412 95 320 Akamai Technologies European
3320 410 7620 357 Deutsche Telekom AG
8551 405 355 38 Bezeq International
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 1383 257 166 TVCABLE BOGOTA
8151 1349 2685 361 Uninet S.A. de C.V.
28573 1235 961 82 Types of queries are: POCs, o
6503 1169 354 73 AVANTEL, S.A.
7303 906 463 144 Telecom Argentina Stet-France
14420 641 57 94 Types of queries are: POCs, o
22047 547 310 15 Types of queries are: POCs, o
3816 509 221 101 COLOMBIA TELECOMUNICACIONES S
7738 478 922 30 Telecomunicacoes da Bahia S.A
27947 468 53 50 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 768 445 11 TEDATA
24863 691 147 39 LINKdotNET AS number
15475 477 90 12 Nile Online
36992 300 271 14 Etisalat MISR
3741 264 987 226 The Internet Solution
33776 230 13 5 Starcomms Nigeria Limited
24835 218 78 10 RAYA Telecom - Egypt
6713 205 199 12 Itissalat Al-MAGHRIB
29571 192 17 11 Ci Telecom Autonomous system
16637 137 416 82 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 3691 3855 261 bellsouth.net, inc.
4323 2610 1109 405 Time Warner Telecom
4766 1849 9492 578 Korea Telecom (KIX)
19262 1789 4939 283 Verizon Global Networks
1785 1787 697 132 AppliedTheory Corporation
7545 1598 302 87 TPG Internet Pty Ltd
20115 1578 1538 647 Charter Communications
6478 1525 296 68 AT&T Worldnet Services
18566 1447 321 156 Covad Communications
4755 1421 633 164 Videsh Sanchar Nigam Ltd. Aut
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 2610 2205 Time Warner Telecom
1785 1787 1655 AppliedTheory Corporation
7545 1598 1511 TPG Internet Pty Ltd
19262 1789 1506 Verizon Global Networks
6478 1525 1457 AT&T Worldnet Services
17974 1412 1383 PT TELEKOMUNIKASI INDONESIA
18566 1447 1291 Covad Communications
4766 1849 1271 Korea Telecom (KIX)
4755 1421 1257 Videsh Sanchar Nigam Ltd. Aut
10620 1383 1217 TVCABLE BOGOTA
Complete listing at http://thyme.rand.apnic.net/rviews/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
16927 UNALLOCATED 12.0.252.0/23 7018 AT&T WorldNet Servic
15132 UNALLOCATED 12.9.150.0/24 1239 Sprint
32567 UNALLOCATED 12.14.170.0/24 7018 AT&T WorldNet Servic
13746 UNALLOCATED 12.24.56.0/24 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
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
5.0.0.0/16 12654 RIPE NCC RIS Project
5.1.0.0/21 12654 RIPE NCC RIS Project
5.1.24.0/24 12654 RIPE NCC RIS Project
24.129.192.0/19 7922 Continental Cablevision
31.24.144.0/21 49855 PLUTEX GmbH
31.43.0.0/19 50004 FO-P Gromov Evgen Viktorovich
37.0.0.0/16 12654 RIPE NCC RIS Project
37.1.0.0/21 12654 RIPE NCC RIS Project
37.1.24.0/24 12654 RIPE NCC RIS Project
41.57.192.0/18 22750 BCSNET
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 /8:19 /9:10 /10:26 /11:73 /12:216
/13:444 /14:770 /15:1398 /16:11644 /17:5901 /18:9640
/19:19401 /20:25108 /21:25355 /22:33708 /23:32300 /24:183840
/25:399 /26:375 /27:213 /28:385 /29:340 /30:734
/31:49 /32:677
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2278 3691 bellsouth.net, inc.
6478 1479 1525 AT&T Worldnet Services
18566 1425 1447 Covad Communications
4323 1408 2610 Time Warner Telecom
10620 1274 1383 TVCABLE BOGOTA
11492 1242 1285 Cable One
7011 1056 1158 Citizens Utilities
1785 1054 1787 AppliedTheory Corporation
6503 952 1169 AVANTEL, S.A.
19262 900 1789 Verizon Global Networks
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:238 2:63 4:18 5:1 8:377 12:2033
13:1 14:413 15:15 16:3 17:8 20:9
23:1 24:1509 27:600 32:127 33:4 34:2
37:1 38:706 40:101 41:2306 44:3 46:655
47:4 49:150 50:95 52:12 55:2 56:2
57:42 58:862 59:477 60:384 61:1110 62:1067
63:1948 64:3882 65:2367 66:4263 67:1812 68:1185
69:3029 70:779 71:404 72:2047 73:3 74:2403
75:303 76:355 77:862 78:702 79:461 80:1072
81:817 82:534 83:478 84:646 85:1067 86:580
87:770 88:360 89:1607 90:157 91:3540 92:494
93:1058 94:1228 95:787 96:454 97:252 98:794
99:33 101:31 107:3 108:88 109:939 110:484
111:721 112:314 113:367 114:500 115:654 116:962
117:683 118:686 119:1016 120:246 121:696 122:1625
123:1052 124:1310 125:1257 128:267 129:159 130:171
131:569 132:108 133:20 134:222 135:49 136:215
137:147 138:295 139:131 140:491 141:203 142:356
143:385 144:486 145:51 146:439 147:211 148:635
149:264 150:167 151:230 152:298 153:179 154:3
155:372 156:176 157:344 158:130 159:381 160:315
161:206 162:276 163:156 164:485 165:356 166:503
167:411 168:737 169:153 170:755 171:69 172:2
173:1330 174:533 175:320 176:1 177:16 178:769
180:814 181:2 182:365 183:248 184:279 186:1021
187:811 188:898 189:1054 190:4421 192:5848 193:4823
194:3555 195:3098 196:1202 197:3 198:3599 199:3839
200:5595 201:1588 202:8452 203:8466 204:4092 205:2325
206:2657 207:3076 208:3931 209:3495 210:2650 211:1347
212:1981 213:1793 214:775 215:63 216:4882 217:1658
218:550 219:376 220:1203 221:449 222:339 223:102
End of report
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