Routing Table Report 00:00 GMT Wed 21 Mar, 2012
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: 405504
Prefixes after maximum aggregation: 172476
Deaggregation factor: 2.35
Unique aggregates announced to Internet: 195108
Total ASes present in the Internet Routing Table: 40474
Prefixes per ASN: 10.02
Origin-only ASes present in the Internet Routing Table: 32916
Origin ASes announcing only one prefix: 15522
Transit ASes present in the Internet Routing Table: 5442
Transit-only ASes present in the Internet Routing Table: 141
Average AS path length visible in the Internet Routing Table: 4.6
Max AS path length visible: 28
Max AS path prepend of ASN (19202) 25
Prefixes from unregistered ASNs in the Routing Table: 5665
Unregistered ASNs in the Routing Table: 236
Number of 32-bit ASNs allocated by the RIRs: 2323
Number of 32-bit ASNs visible in the Routing Table: 2116
Prefixes from 32-bit ASNs in the Routing Table: 5151
Special use prefixes present in the Routing Table: 87
Prefixes being announced from unallocated address space: 810
Number of addresses announced to Internet: 2527815382
Equivalent to 150 /8s, 171 /16s and 102 /24s
Percentage of available address space announced: 68.2
Percentage of allocated address space announced: 68.2
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 92.1
Total number of prefixes smaller than registry allocations: 170951
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 96403
Total APNIC prefixes after maximum aggregation: 30889
APNIC Deaggregation factor: 3.12
Prefixes being announced from the APNIC address blocks: 92891
Unique aggregates announced from the APNIC address blocks: 39318
APNIC Region origin ASes present in the Internet Routing Table: 4660
APNIC Prefixes per ASN: 19.93
APNIC Region origin ASes announcing only one prefix: 1250
APNIC Region transit ASes present in the Internet Routing Table: 735
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 18
Number of APNIC region 32-bit ASNs visible in the Routing Table: 167
Number of APNIC addresses announced to Internet: 640941312
Equivalent to 38 /8s, 51 /16s and 253 /24s
Percentage of available APNIC address space announced: 81.3
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: 151672
Total ARIN prefixes after maximum aggregation: 77986
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 122964
Unique aggregates announced from the ARIN address blocks: 49909
ARIN Region origin ASes present in the Internet Routing Table: 14967
ARIN Prefixes per ASN: 8.22
ARIN Region origin ASes announcing only one prefix: 5680
ARIN Region transit ASes present in the Internet Routing Table: 1574
Average ARIN Region AS path length visible: 4.1
Max ARIN Region AS path length visible: 28
Number of ARIN region 32-bit ASNs visible in the Routing Table: 16
Number of ARIN addresses announced to Internet: 806730240
Equivalent to 48 /8s, 21 /16s and 186 /24s
Percentage of available ARIN address space announced: 64.1
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: 103313
Total RIPE prefixes after maximum aggregation: 53226
RIPE Deaggregation factor: 1.94
Prefixes being announced from the RIPE address blocks: 93820
Unique aggregates announced from the RIPE address blocks: 57097
RIPE Region origin ASes present in the Internet Routing Table: 16370
RIPE Prefixes per ASN: 5.73
RIPE Region origin ASes announcing only one prefix: 7987
RIPE Region transit ASes present in the Internet Routing Table: 2644
Average RIPE Region AS path length visible: 5.0
Max RIPE Region AS path length visible: 23
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1438
Number of RIPE addresses announced to Internet: 502309516
Equivalent to 29 /8s, 240 /16s and 162 /24s
Percentage of available RIPE address space announced: 80.9
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: 39630
Total LACNIC prefixes after maximum aggregation: 8090
LACNIC Deaggregation factor: 4.90
Prefixes being announced from the LACNIC address blocks: 39317
Unique aggregates announced from the LACNIC address blocks: 19593
LACNIC Region origin ASes present in the Internet Routing Table: 1573
LACNIC Prefixes per ASN: 24.99
LACNIC Region origin ASes announcing only one prefix: 437
LACNIC Region transit ASes present in the Internet Routing Table: 292
Average LACNIC Region AS path length visible: 4.8
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 490
Number of LACNIC addresses announced to Internet: 98461960
Equivalent to 5 /8s, 222 /16s and 105 /24s
Percentage of available LACNIC address space announced: 65.2
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: 8980
Total AfriNIC prefixes after maximum aggregation: 2121
AfriNIC Deaggregation factor: 4.23
Prefixes being announced from the AfriNIC address blocks: 7069
Unique aggregates announced from the AfriNIC address blocks: 2207
AfriNIC Region origin ASes present in the Internet Routing Table: 525
AfriNIC Prefixes per ASN: 13.46
AfriNIC Region origin ASes announcing only one prefix: 168
AfriNIC Region transit ASes present in the Internet Routing Table: 118
Average AfriNIC Region AS path length visible: 4.5
Max AfriNIC Region AS path length visible: 25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 31518465
Equivalent to 1 /8s, 224 /16s and 239 /24s
Percentage of available AfriNIC address space announced: 47.0
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 1932 11102 681 Korea Telecom (KIX)
17974 1741 500 62 PT TELEKOMUNIKASI INDONESIA
7545 1651 303 88 TPG Internet Pty Ltd
4755 1569 386 160 Videsh Sanchar Nigam Ltd. Aut
9583 1242 95 539 Sify Limited
9829 1186 1001 30 BSNL National Internet Backbo
7552 1165 1062 11 Vietel Corporation
24560 1015 384 166 Bharti Airtel Ltd.
18101 948 130 160 Reliance Infocom Ltd Internet
4808 925 1875 267 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
7029 3375 1006 155 Windstream Communications Inc
6389 3374 3807 199 bellsouth.net, inc.
18566 2093 383 179 Covad Communications
1785 1879 680 127 AppliedTheory Corporation
20115 1634 1558 629 Charter Communications
4323 1573 1073 371 Time Warner Telecom
22773 1545 2910 111 Cox Communications, Inc.
30036 1399 252 744 Mediacom Communications Corp
7018 1277 9648 837 AT&T WorldNet Services
11492 1164 212 415 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
8402 1771 544 16 Corbina telecom
2118 1427 97 13 EUnet/RELCOM Autonomous Syste
15557 1089 2247 55 LDCOM NETWORKS
286 1071 854 202 KPNQwest Backbone AS
31148 670 37 9 FreeNet ISP
34984 665 188 172 Tellcom Iletisim Hizmetleri
6830 642 1943 413 UPC Distribution Services
12479 640 651 55 Uni2 Autonomous System
20940 620 202 490 Akamai Technologies European
8551 602 360 81 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 1806 329 130 TVCABLE BOGOTA
28573 1725 1099 60 Types of queries are: POCs, o
8151 1523 3000 330 Uninet S.A. de C.V.
7303 1346 824 189 Telecom Argentina Stet-France
26615 900 676 31 Types of queries are: POCs, o
27947 677 68 109 Telconet S.A
11172 637 91 73 Alestra
22047 584 326 15 Types of queries are: POCs, o
6503 566 418 66 AVANTEL, S.A.
3816 560 239 97 COLOMBIA TELECOMUNICACIONES S
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 1264 958 13 TEDATA
24863 841 274 35 LINKdotNET AS number
6713 489 649 18 Itissalat Al-MAGHRIB
3741 271 923 228 The Internet Solution
15706 227 32 6 Sudatel Internet Exchange Aut
12258 197 28 62 YEBO-AS
15399 190 29 12 Wananchi Online Limited
24835 177 80 8 RAYA Telecom - Egypt
33776 162 12 25 Starcomms Nigeria Limited
36923 157 20 4 Swift Networks Limited
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
7029 3375 1006 155 Windstream Communications Inc
6389 3374 3807 199 bellsouth.net, inc.
18566 2093 383 179 Covad Communications
4766 1932 11102 681 Korea Telecom (KIX)
1785 1879 680 127 AppliedTheory Corporation
10620 1806 329 130 TVCABLE BOGOTA
8402 1771 544 16 Corbina telecom
17974 1741 500 62 PT TELEKOMUNIKASI INDONESIA
28573 1725 1099 60 Types of queries are: POCs, o
7545 1651 303 88 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
6389 3374 3175 bellsouth.net, inc.
18566 2093 1914 Covad Communications
8402 1771 1755 Corbina telecom
1785 1879 1752 AppliedTheory Corporation
17974 1741 1679 PT TELEKOMUNIKASI INDONESIA
10620 1806 1676 TVCABLE BOGOTA
28573 1725 1665 Types of queries are: POCs, o
7545 1651 1563 TPG Internet Pty Ltd
22773 1545 1434 Cox Communications, Inc.
2118 1427 1414 EUnet/RELCOM Autonomous Syste
Complete listing at http://thyme.rand.apnic.net/rviews/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
23456 UNALLOCATED 8.14.101.0/24 6461 AboveNet Communicati
54439 UNALLOCATED 8.25.174.0/24 3356 Level 3 Communicatio
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.14.170.0/24 4323 Time Warner Telecom
32567 UNALLOCATED 12.25.107.0/24 4323 Time Warner Telecom
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
17300 UNALLOCATED 12.45.103.0/24 7018 AT&T WorldNet Servic
17300 UNALLOCATED 12.45.110.0/24 701 UUNET Technologies,
Complete listing at http://thyme.rand.apnic.net/rviews/data-badAS
Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------
Prefix Origin AS Description
10.29.245.1/32 286 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
10.29.245.27/32 286 KPNQwest Backbone AS
Complete listing at http://thyme.rand.apnic.net/rviews/data-dsua
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
14.192.0.0/22 45464 Room 201, TGU Bldg
14.192.4.0/22 45464 Room 201, TGU Bldg
14.192.8.0/22 45464 Room 201, TGU Bldg
14.192.12.0/22 45464 Room 201, TGU Bldg
14.192.16.0/22 45464 Room 201, TGU Bldg
14.192.20.0/22 45464 Room 201, TGU Bldg
14.192.24.0/22 45464 Room 201, TGU Bldg
14.192.28.0/22 45464 Room 201, TGU Bldg
23.27.0.0/20 54500 EGIHosting
23.27.16.0/20 54500 EGIHosting
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 /9:12 /10:28 /11:81 /12:235
/13:458 /14:826 /15:1507 /16:12329 /17:6525 /18:10850
/19:21075 /20:29812 /21:29988 /22:40450 /23:37831 /24:211851
/25:69 /26:75 /27:110 /28:278 /29:104 /30:510
/31:20 /32:461
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
7029 3035 3375 Windstream Communications Inc
6389 2089 3374 bellsouth.net, inc.
18566 2042 2093 Covad Communications
8402 1748 1771 Corbina telecom
10620 1703 1806 TVCABLE BOGOTA
30036 1347 1399 Mediacom Communications Corp
11492 1127 1164 Cable One
8452 1074 1264 TEDATA
1785 1062 1879 AppliedTheory Corporation
15557 1036 1089 LDCOM NETWORKS
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:531 2:765 4:18 6:3 8:396 12:1977
13:1 14:612 15:12 16:3 17:7 20:8
23:144 24:1760 27:1247 31:959 32:124 33:2
34:2 36:8 37:293 38:785 39:4 40:122
41:3136 42:129 44:3 46:1438 47:3 49:346
50:518 52:13 54:5 55:9 56:3 57:46
58:963 59:495 60:278 61:1211 62:993 63:2031
64:4217 65:2282 66:4525 67:2043 68:1347 69:3295
70:946 71:389 72:1809 73:1 74:2637 75:504
76:332 77:967 78:987 79:512 80:1244 81:909
82:661 83:558 84:605 85:1201 86:733 87:920
88:351 89:1620 90:294 91:4629 92:521 93:1488
94:1461 95:1131 96:378 97:316 98:804 99:38
100:6 101:151 103:922 106:64 107:175 108:211
109:1560 110:757 111:894 112:445 113:563 114:635
115:776 116:883 117:726 118:919 119:1207 120:339
121:717 122:1659 123:1095 124:1369 125:1264 128:550
129:193 130:266 131:595 132:173 133:21 134:244
135:63 136:212 137:187 138:275 139:157 140:494
141:241 142:392 143:432 144:498 145:69 146:492
147:253 148:756 149:296 150:156 151:174 152:456
153:171 154:7 155:444 156:213 157:382 158:163
159:520 160:326 161:250 162:343 163:186 164:535
165:412 166:563 167:463 168:812 169:149 170:842
171:121 172:4 173:1734 174:586 175:447 176:457
177:577 178:1293 180:1146 181:73 182:772 183:277
184:448 185:1 186:2126 187:844 188:1139 189:1195
190:5542 192:6014 193:5621 194:4592 195:3679 196:1288
197:186 198:3628 199:4482 200:5763 201:1652 202:8449
203:8642 204:4359 205:2471 206:2768 207:2806 208:4085
209:3633 210:2783 211:1478 212:2033 213:1913 214:866
215:108 216:5072 217:1531 218:541 219:355 220:1238
221:553 222:331 223:328
End of report