Routing Table Report 00:00 GMT Thu 31 Mar, 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: 356259
Prefixes after maximum aggregation: 161057
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 173800
Total ASes present in the Internet Routing Table: 37154
Prefixes per ASN: 9.59
Origin-only ASes present in the Internet Routing Table: 31184
Origin ASes announcing only one prefix: 14964
Transit ASes present in the Internet Routing Table: 5031
Transit-only ASes present in the Internet Routing Table: 124
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 31
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 2644
Unregistered ASNs in the Routing Table: 241
Number of 32-bit ASNs allocated by the RIRs: 1246
Number of 32-bit ASNs visible in the Routing Table: 939
Prefixes from 32-bit ASNs in the Routing Table: 2091
Special use prefixes present in the Routing Table: 75
Prefixes being announced from unallocated address space: 214
Number of addresses announced to Internet: 2392372284
Equivalent to 142 /8s, 152 /16s and 180 /24s
Percentage of available address space announced: 64.5
Percentage of allocated address space announced: 64.5
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 89.9
Total number of prefixes smaller than registry allocations: 147327
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 85733
Total APNIC prefixes after maximum aggregation: 28804
APNIC Deaggregation factor: 2.98
Prefixes being announced from the APNIC address blocks: 82737
Unique aggregates announced from the APNIC address blocks: 36704
APNIC Region origin ASes present in the Internet Routing Table: 4362
APNIC Prefixes per ASN: 18.97
APNIC Region origin ASes announcing only one prefix: 1219
APNIC Region transit ASes present in the Internet Routing Table: 689
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 24
Number of APNIC region 32-bit ASNs visible in the Routing Table: 46
Number of APNIC addresses announced to Internet: 601392577
Equivalent to 35 /8s, 216 /16s and 133 /24s
Percentage of available APNIC address space announced: 76.3
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: 141729
Total ARIN prefixes after maximum aggregation: 72875
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 113848
Unique aggregates announced from the ARIN address blocks: 44937
ARIN Region origin ASes present in the Internet Routing Table: 14297
ARIN Prefixes per ASN: 7.96
ARIN Region origin ASes announcing only one prefix: 5426
ARIN Region transit ASes present in the Internet Routing Table: 1464
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 23
Number of ARIN region 32-bit ASNs visible in the Routing Table: 10
Number of ARIN addresses announced to Internet: 797405720
Equivalent to 47 /8s, 135 /16s and 114 /24s
Percentage of available ARIN address space announced: 63.4
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: 86408
Total RIPE prefixes after maximum aggregation: 47785
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 78879
Unique aggregates announced from the RIPE address blocks: 50015
RIPE Region origin ASes present in the Internet Routing Table: 15491
RIPE Prefixes per ASN: 5.09
RIPE Region origin ASes announcing only one prefix: 7747
RIPE Region transit ASes present in the Internet Routing Table: 2442
Average RIPE Region AS path length visible: 4.1
Max RIPE Region AS path length visible: 23
Number of RIPE region 32-bit ASNs visible in the Routing Table: 695
Number of RIPE addresses announced to Internet: 465652540
Equivalent to 27 /8s, 193 /16s and 75 /24s
Percentage of available RIPE address space announced: 75.0
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: 32423
Total LACNIC prefixes after maximum aggregation: 7435
LACNIC Deaggregation factor: 4.36
Prefixes being announced from the LACNIC address blocks: 31345
Unique aggregates announced from the LACNIC address blocks: 16255
LACNIC Region origin ASes present in the Internet Routing Table: 1444
LACNIC Prefixes per ASN: 21.71
LACNIC Region origin ASes announcing only one prefix: 437
LACNIC Region transit ASes present in the Internet Routing Table: 263
Average LACNIC Region AS path length visible: 4.6
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 183
Number of LACNIC addresses announced to Internet: 81558924
Equivalent to 4 /8s, 220 /16s and 125 /24s
Percentage of available LACNIC address space announced: 54.0
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: 7612
Total AfriNIC prefixes after maximum aggregation: 1823
AfriNIC Deaggregation factor: 4.18
Prefixes being announced from the AfriNIC address blocks: 5974
Unique aggregates announced from the AfriNIC address blocks: 1868
AfriNIC Region origin ASes present in the Internet Routing Table: 441
AfriNIC Prefixes per ASN: 13.55
AfriNIC Region origin ASes announcing only one prefix: 135
AfriNIC Region transit ASes present in the Internet Routing Table: 95
Average AfriNIC Region AS path length visible: 3.8
Max AfriNIC Region AS path length visible: 31
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 22670592
Equivalent to 1 /8s, 89 /16s and 237 /24s
Percentage of available AfriNIC address space announced: 33.8
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 1863 9501 598 Korea Telecom (KIX)
7545 1541 301 84 TPG Internet Pty Ltd
4755 1481 649 158 Videsh Sanchar Nigam Ltd. Aut
17974 1463 472 34 PT TELEKOMUNIKASI INDONESIA
24560 1135 322 204 Bharti Airtel Ltd.
9583 1054 77 497 Sify Limited
9829 1006 869 51 BSNL National Internet Backbo
4808 993 2077 293 CNCGROUP IP network: China169
17488 953 162 97 Hathway IP Over Cable Interne
18101 934 116 139 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 3670 3838 258 bellsouth.net, inc.
4323 2554 1102 398 Time Warner Telecom
1785 1790 681 131 AppliedTheory Corporation
18566 1606 331 195 Covad Communications
6478 1586 303 42 AT&T Worldnet Services
20115 1579 1543 648 Charter Communications
19262 1490 4935 304 Verizon Global Networks
7018 1366 6931 892 AT&T WorldNet Services
11492 1325 240 15 Cable One
22773 1289 2865 81 Cox Communications, Inc.
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 1009 796 167 KPNQwest Backbone AS
9116 544 326 31 Goldenlines main autonomous s
6830 513 1780 316 UPC Distribution Services
3292 509 2013 392 TDC Tele Danmark
34984 473 96 198 Tellcom Iletisim Hizmetleri
8866 445 133 25 Bulgarian Telecommunication C
9198 424 267 15 Kazakhtelecom Corporate Sales
20940 420 99 326 Akamai Technologies European
3320 412 7604 358 Deutsche Telekom AG
8402 406 320 32 Corbina telecom
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 1405 262 152 TVCABLE BOGOTA
28573 1253 969 84 Types of queries are: POCs, o
8151 1245 2658 369 Uninet S.A. de C.V.
6503 1115 354 71 AVANTEL, S.A.
7303 925 465 149 Telecom Argentina Stet-France
14420 642 52 91 Types of queries are: POCs, o
22047 567 310 15 Types of queries are: POCs, o
3816 517 225 97 COLOMBIA TELECOMUNICACIONES S
11172 487 83 80 Alestra
27947 483 53 51 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 844 445 11 TEDATA
24863 743 147 39 LINKdotNET AS number
15475 426 90 8 Nile Online
36992 294 271 14 Etisalat MISR
3741 265 985 227 The Internet Solution
24835 232 78 10 RAYA Telecom - Egypt
33776 230 13 5 Starcomms Nigeria Limited
6713 214 199 11 Itissalat Al-MAGHRIB
29571 192 17 11 Ci Telecom Autonomous system
16637 151 441 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 3670 3838 258 bellsouth.net, inc.
4323 2554 1102 398 Time Warner Telecom
23456 2091 496 1118 >>UNKNOWN<<
4766 1863 9501 598 Korea Telecom (KIX)
1785 1790 681 131 AppliedTheory Corporation
18566 1606 331 195 Covad Communications
6478 1586 303 42 AT&T Worldnet Services
20115 1579 1543 648 Charter Communications
7545 1541 301 84 TPG Internet Pty Ltd
19262 1490 4935 304 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 2554 2156 Time Warner Telecom
1785 1790 1659 AppliedTheory Corporation
6478 1586 1544 AT&T Worldnet Services
7545 1541 1457 TPG Internet Pty Ltd
17974 1463 1429 PT TELEKOMUNIKASI INDONESIA
18566 1606 1411 Covad Communications
4755 1481 1323 Videsh Sanchar Nigam Ltd. Aut
11492 1325 1310 Cable One
4766 1863 1265 Korea Telecom (KIX)
10620 1405 1253 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
44559 UNALLOCATED 2.56.0.0/16 29632 The NetAssist autono
44559 UNALLOCATED 2.57.0.0/16 29632 The NetAssist autono
44559 UNALLOCATED 2.58.0.0/16 29632 The NetAssist autono
44559 UNALLOCATED 2.59.0.0/16 29632 The NetAssist autono
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
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 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.154.0/23 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
1.3.0.0/16 38639 NTT Communications Corporatio
2.56.0.0/16 44559 >>UNKNOWN<<
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
31.41.128.0/21 39056 PB Anoxin
31.129.160.0/19 24872 Magnus ISP autonomous system
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 /9:11 /10:26 /11:75 /12:219
/13:448 /14:772 /15:1401 /16:11710 /17:5952 /18:9747
/19:19599 /20:25456 /21:25708 /22:34104 /23:32724 /24:185658
/25:370 /26:346 /27:170 /28:205 /29:197 /30:655
/31:57 /32:630
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2263 3670 bellsouth.net, inc.
18566 1585 1606 Covad Communications
6478 1540 1586 AT&T Worldnet Services
4323 1373 2554 Time Warner Telecom
10620 1295 1405 TVCABLE BOGOTA
11492 1274 1325 Cable One
23456 1115 2091 >>UNKNOWN<<
7011 1064 1164 Citizens Utilities
1785 1056 1790 AppliedTheory Corporation
6503 898 1115 AVANTEL, S.A.
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:296 2:74 4:18 5:1 8:349 12:2016
13:1 14:429 15:15 16:3 17:8 20:9
23:5 24:1611 27:701 31:29 32:126 33:3
34:2 37:1 38:748 39:1 40:101 41:2376
44:3 46:782 47:4 49:144 50:134 52:13
55:6 56:2 57:40 58:824 59:504 60:387
61:1175 62:1023 63:1932 64:3907 65:2352 66:4382
67:1830 68:1251 69:3026 70:742 71:349 72:1928
73:3 74:2389 75:299 76:344 77:860 78:701
79:461 80:1111 81:829 82:527 83:475 84:666
85:1051 86:604 87:795 88:352 89:1596 90:175
91:3673 92:511 93:1051 94:1261 95:797 96:456
97:252 98:819 99:35 101:49 106:1 107:4
108:80 109:939 110:517 111:682 112:332 113:385
114:522 115:717 116:955 117:675 118:756 119:1113
120:289 121:764 122:1610 123:1059 124:1312 125:1257
128:266 129:177 130:173 131:566 132:110 133:20
134:222 135:49 136:213 137:142 138:301 139:125
140:487 141:173 142:384 143:392 144:482 145:52
146:440 147:208 148:636 149:261 150:167 151:187
152:298 153:180 154:3 155:389 156:185 157:349
158:131 159:380 160:317 161:210 162:277 163:165
164:494 165:366 166:502 167:413 168:722 169:155
170:784 171:70 172:2 173:1276 174:535 175:351
177:73 178:780 180:794 181:4 182:411 183:201
184:313 185:1 186:1125 187:905 188:926 189:1038
190:4769 192:5805 193:4819 194:3540 195:3084 196:1217
197:15 198:3605 199:3890 200:5578 201:1496 202:8394
203:8450 204:4113 205:2325 206:2665 207:3029 208:3921
209:3504 210:2720 211:1367 212:2029 213:1765 214:764
215:66 216:4906 217:1648 218:561 219:383 220:1199
221:481 222:314 223:104
End of report
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