Routing Table Report 00:00 GMT Thu 28 Apr, 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: 360435
Prefixes after maximum aggregation: 162202
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 175419
Total ASes present in the Internet Routing Table: 37424
Prefixes per ASN: 9.63
Origin-only ASes present in the Internet Routing Table: 31475
Origin ASes announcing only one prefix: 15030
Transit ASes present in the Internet Routing Table: 4920
Transit-only ASes present in the Internet Routing Table: 118
Average AS path length visible in the Internet Routing Table: 3.9
Max AS path length visible: 23
Max AS path prepend of ASN (32374) 19
Prefixes from unregistered ASNs in the Routing Table: 2994
Unregistered ASNs in the Routing Table: 303
Number of 32-bit ASNs allocated by the RIRs: 1311
Number of 32-bit ASNs visible in the Routing Table: 1029
Prefixes from 32-bit ASNs in the Routing Table: 2308
Special use prefixes present in the Routing Table: 76
Prefixes being announced from unallocated address space: 159
Number of addresses announced to Internet: 2420715961
Equivalent to 144 /8s, 73 /16s and 49 /24s
Percentage of available address space announced: 65.3
Percentage of allocated address space announced: 65.3
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.6
Total number of prefixes smaller than registry allocations: 149598
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 86809
Total APNIC prefixes after maximum aggregation: 28843
APNIC Deaggregation factor: 3.01
Prefixes being announced from the APNIC address blocks: 83385
Unique aggregates announced from the APNIC address blocks: 36910
APNIC Region origin ASes present in the Internet Routing Table: 4404
APNIC Prefixes per ASN: 18.93
APNIC Region origin ASes announcing only one prefix: 1237
APNIC Region transit ASes present in the Internet Routing Table: 683
Average APNIC Region AS path length visible: 4.2
Max APNIC Region AS path length visible: 17
Number of APNIC region 32-bit ASNs visible in the Routing Table: 48
Number of APNIC addresses announced to Internet: 610999745
Equivalent to 36 /8s, 107 /16s and 29 /24s
Percentage of available APNIC address space announced: 77.5
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: 143057
Total ARIN prefixes after maximum aggregation: 73250
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 115079
Unique aggregates announced from the ARIN address blocks: 45150
ARIN Region origin ASes present in the Internet Routing Table: 14351
ARIN Prefixes per ASN: 8.02
ARIN Region origin ASes announcing only one prefix: 5461
ARIN Region transit ASes present in the Internet Routing Table: 1446
Average ARIN Region AS path length visible: 3.7
Max ARIN Region AS path length visible: 22
Number of ARIN region 32-bit ASNs visible in the Routing Table: 11
Number of ARIN addresses announced to Internet: 799834392
Equivalent to 47 /8s, 172 /16s and 129 /24s
Percentage of available ARIN address space announced: 63.6
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: 87387
Total RIPE prefixes after maximum aggregation: 48191
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 79723
Unique aggregates announced from the RIPE address blocks: 50786
RIPE Region origin ASes present in the Internet Routing Table: 15578
RIPE Prefixes per ASN: 5.12
RIPE Region origin ASes announcing only one prefix: 7769
RIPE Region transit ASes present in the Internet Routing Table: 2381
Average RIPE Region AS path length visible: 3.9
Max RIPE Region AS path length visible: 22
Number of RIPE region 32-bit ASNs visible in the Routing Table: 763
Number of RIPE addresses announced to Internet: 467685436
Equivalent to 27 /8s, 224 /16s and 80 /24s
Percentage of available RIPE address space announced: 75.3
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: 32771
Total LACNIC prefixes after maximum aggregation: 7479
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 31787
Unique aggregates announced from the LACNIC address blocks: 16523
LACNIC Region origin ASes present in the Internet Routing Table: 1443
LACNIC Prefixes per ASN: 22.03
LACNIC Region origin ASes announcing only one prefix: 427
LACNIC Region transit ASes present in the Internet Routing Table: 258
Average LACNIC Region AS path length visible: 4.2
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 202
Number of LACNIC addresses announced to Internet: 82664972
Equivalent to 4 /8s, 237 /16s and 94 /24s
Percentage of available LACNIC address space announced: 54.7
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: 7808
Total AfriNIC prefixes after maximum aggregation: 1842
AfriNIC Deaggregation factor: 4.24
Prefixes being announced from the AfriNIC address blocks: 6157
Unique aggregates announced from the AfriNIC address blocks: 1896
AfriNIC Region origin ASes present in the Internet Routing Table: 448
AfriNIC Prefixes per ASN: 13.74
AfriNIC Region origin ASes announcing only one prefix: 136
AfriNIC Region transit ASes present in the Internet Routing Table: 98
Average AfriNIC Region AS path length visible: 4.0
Max AfriNIC Region AS path length visible: 23
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23374080
Equivalent to 1 /8s, 100 /16s and 169 /24s
Percentage of available AfriNIC address space announced: 34.8
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 1871 9474 599 Korea Telecom (KIX)
17974 1825 507 30 PT TELEKOMUNIKASI INDONESIA
7545 1472 300 82 TPG Internet Pty Ltd
4755 1456 634 166 Videsh Sanchar Nigam Ltd. Aut
7552 1194 1064 7 Vietel Corporation
24560 1157 328 189 Bharti Airtel Ltd.
9583 1056 78 494 Sify Limited
9829 1001 868 53 BSNL National Internet Backbo
17488 959 165 100 Hathway IP Over Cable Interne
18101 933 116 138 Reliance Infocom Ltd Internet
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 3646 3822 257 bellsouth.net, inc.
4323 2629 1102 398 Time Warner Telecom
1785 1791 681 129 AppliedTheory Corporation
18566 1776 349 229 Covad Communications
6478 1648 310 46 AT&T Worldnet Services
20115 1584 1555 641 Charter Communications
19262 1495 4933 298 Verizon Global Networks
7018 1352 6815 889 AT&T WorldNet Services
22773 1300 2865 84 Cox Communications, Inc.
2386 1270 535 912 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 1020 798 175 KPNQwest Backbone AS
9116 541 326 30 Goldenlines main autonomous s
6830 521 1780 322 UPC Distribution Services
3292 519 1997 392 TDC Tele Danmark
34984 509 106 182 Tellcom Iletisim Hizmetleri
29049 450 33 48 AzerSat LLC.
8866 447 134 26 Bulgarian Telecommunication C
20940 445 130 339 Akamai Technologies European
3320 422 7609 367 Deutsche Telekom AG
8551 407 356 39 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 1446 268 160 TVCABLE BOGOTA
8151 1356 2687 368 Uninet S.A. de C.V.
28573 1288 988 87 Types of queries are: POCs, o
7303 926 467 148 Telecom Argentina Stet-France
6503 905 354 73 AVANTEL, S.A.
14420 665 53 91 Types of queries are: POCs, o
22047 566 310 15 Types of queries are: POCs, o
3816 519 226 97 COLOMBIA TELECOMUNICACIONES S
14117 492 46 43 Telefonica del Sur S.A.
11172 489 99 82 Alestra
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 878 445 11 TEDATA
24863 778 147 39 LINKdotNET AS number
15475 434 90 8 Nile Online
36992 299 415 13 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 239 215 13 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
24835 218 78 10 RAYA Telecom - Egypt
29571 161 17 11 Ci Telecom Autonomous system
16637 150 441 86 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 3646 3822 257 bellsouth.net, inc.
4323 2629 1102 398 Time Warner Telecom
23456 2308 657 1250 >>UNKNOWN<<
4766 1871 9474 599 Korea Telecom (KIX)
17974 1825 507 30 PT TELEKOMUNIKASI INDONESIA
1785 1791 681 129 AppliedTheory Corporation
18566 1776 349 229 Covad Communications
6478 1648 310 46 AT&T Worldnet Services
20115 1584 1555 641 Charter Communications
19262 1495 4933 298 Verizon Global Networks
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 2629 2231 Time Warner Telecom
17974 1825 1795 PT TELEKOMUNIKASI INDONESIA
1785 1791 1662 AppliedTheory Corporation
6478 1648 1602 AT&T Worldnet Services
18566 1776 1547 Covad Communications
7545 1472 1390 TPG Internet Pty Ltd
4755 1456 1290 Videsh Sanchar Nigam Ltd. Aut
10620 1446 1286 TVCABLE BOGOTA
4766 1871 1272 Korea Telecom (KIX)
11492 1258 1243 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 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
31.193.128.0/20 29550 Blueconnex Networks Ltd
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
45.127.0.0/16 13767 NetworkTwo Communications Gro
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 /11:78 /12:221
/13:459 /14:793 /15:1416 /16:11787 /17:5997 /18:9932
/19:19704 /20:26316 /21:26060 /22:34218 /23:33214 /24:187519
/25:375 /26:354 /27:164 /28:268 /29:179 /30:616
/31:63 /32:642
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2246 3646 bellsouth.net, inc.
18566 1744 1776 Covad Communications
6478 1602 1648 AT&T Worldnet Services
10620 1336 1446 TVCABLE BOGOTA
4323 1330 2629 Time Warner Telecom
11492 1207 1258 Cable One
23456 1168 2308 >>UNKNOWN<<
7011 1062 1161 Citizens Utilities
1785 1059 1791 AppliedTheory Corporation
286 880 1020 KPNQwest Backbone AS
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:265 2:66 4:18 5:1 6:3 8:352
12:1983 13:1 14:436 15:15 16:3 17:8
20:9 23:5 24:1618 27:727 31:227 32:126
33:3 34:2 37:1 38:767 40:101 41:2453
42:5 44:3 46:884 47:4 49:177 50:373
52:13 55:5 56:2 57:40 58:846 59:483
60:356 61:1270 62:1003 63:1934 64:3966 65:2321
66:4382 67:1891 68:1249 69:3061 70:745 71:351
72:1933 73:3 74:2415 75:311 76:343 77:877
78:688 79:472 80:1106 81:821 82:513 83:473
84:667 85:1092 86:613 87:776 88:338 89:1623
90:183 91:3726 92:521 93:1068 94:1282 95:801
96:474 97:250 98:832 99:35 101:66 103:5
106:1 107:5 108:83 109:950 110:555 111:696
112:320 113:398 114:522 115:686 116:969 117:682
118:803 119:1143 120:301 121:676 122:1625 123:1072
124:1248 125:1220 128:267 129:167 130:172 131:568
132:112 133:19 134:219 135:49 136:214 137:142
138:303 139:118 140:493 141:174 142:403 143:402
144:486 145:52 146:442 147:219 148:591 149:243
150:172 151:187 152:309 153:179 154:3 155:395
156:191 157:354 158:133 159:384 160:314 161:246
162:277 163:164 164:480 165:368 166:512 167:426
168:719 169:154 170:786 171:76 172:1 173:1525
174:535 175:361 177:80 178:861 180:828 181:15
182:437 183:202 184:339 185:1 186:1127 187:826
188:994 189:1012 190:4865 192:5817 193:4857 194:3515
195:3116 196:1214 197:16 198:3585 199:3925 200:5543
201:1502 202:8361 203:8450 204:4137 205:2330 206:2771
207:3029 208:3978 209:3500 210:2721 211:1387 212:2029
213:1768 214:731 215:67 216:4884 217:1665 218:566
219:375 220:1199 221:485 222:342 223:145
End of report
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