Routing Table Report 04:00 +10GMT Tue 29 Mar, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 351662
Prefixes after maximum aggregation: 159659
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 173687
Total ASes present in the Internet Routing Table: 37094
Prefixes per ASN: 9.48
Origin-only ASes present in the Internet Routing Table: 31168
Origin ASes announcing only one prefix: 14979
Transit ASes present in the Internet Routing Table: 4995
Transit-only ASes present in the Internet Routing Table: 132
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: 503
Unregistered ASNs in the Routing Table: 222
Number of 32-bit ASNs allocated by the RIRs: 1239
Number of 32-bit ASNs visible in the Routing Table: 931
Prefixes from 32-bit ASNs in the Routing Table: 2015
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 190
Number of addresses announced to Internet: 2391368000
Equivalent to 142 /8s, 137 /16s and 97 /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: 89.8
Total number of prefixes smaller than registry allocations: 145573
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87820
Total APNIC prefixes after maximum aggregation: 29973
APNIC Deaggregation factor: 2.93
Prefixes being announced from the APNIC address blocks: 84694
Unique aggregates announced from the APNIC address blocks: 36680
APNIC Region origin ASes present in the Internet Routing Table: 4376
APNIC Prefixes per ASN: 19.35
APNIC Region origin ASes announcing only one prefix: 1211
APNIC Region transit ASes present in the Internet Routing Table: 692
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 20
Number of APNIC region 32-bit ASNs visible in the Routing Table: 45
Number of APNIC addresses announced to Internet: 600971328
Equivalent to 35 /8s, 210 /16s and 24 /24s
Percentage of available APNIC address space announced: 76.2
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: 138618
Total ARIN prefixes after maximum aggregation: 70821
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 111083
Unique aggregates announced from the ARIN address blocks: 44927
ARIN Region origin ASes present in the Internet Routing Table: 14277
ARIN Prefixes per ASN: 7.78
ARIN Region origin ASes announcing only one prefix: 5430
ARIN Region transit ASes present in the Internet Routing Table: 1480
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: 797266432
Equivalent to 47 /8s, 133 /16s and 82 /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: 82914
Total RIPE prefixes after maximum aggregation: 47376
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 76269
Unique aggregates announced from the RIPE address blocks: 50085
RIPE Region origin ASes present in the Internet Routing Table: 15441
RIPE Prefixes per ASN: 4.94
RIPE Region origin ASes announcing only one prefix: 7773
RIPE Region transit ASes present in the Internet Routing Table: 2408
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 30
Number of RIPE region 32-bit ASNs visible in the Routing Table: 688
Number of RIPE addresses announced to Internet: 465135616
Equivalent to 27 /8s, 185 /16s and 104 /24s
Percentage of available RIPE address space announced: 74.9
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: 32406
Total LACNIC prefixes after maximum aggregation: 7366
LACNIC Deaggregation factor: 4.40
Prefixes being announced from the LACNIC address blocks: 31303
Unique aggregates announced from the LACNIC address blocks: 16251
LACNIC Region origin ASes present in the Internet Routing Table: 1440
LACNIC Prefixes per ASN: 21.74
LACNIC Region origin ASes announcing only one prefix: 434
LACNIC Region transit ASes present in the Internet Routing Table: 263
Average LACNIC Region AS path length visible: 4.4
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: 81545088
Equivalent to 4 /8s, 220 /16s and 71 /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: 7633
Total AfriNIC prefixes after maximum aggregation: 1820
AfriNIC Deaggregation factor: 4.19
Prefixes being announced from the AfriNIC address blocks: 5999
Unique aggregates announced from the AfriNIC address blocks: 1867
AfriNIC Region origin ASes present in the Internet Routing Table: 441
AfriNIC Prefixes per ASN: 13.60
AfriNIC Region origin ASes announcing only one prefix: 131
AfriNIC Region transit ASes present in the Internet Routing Table: 92
Average AfriNIC Region AS path length visible: 5.3
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: 22680064
Equivalent to 1 /8s, 90 /16s and 18 /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 2418 9509 897 Korea Telecom (KIX)
7545 1556 301 84 TPG Internet Pty Ltd
4755 1480 649 158 TATA Communications formerly
17974 1454 480 33 PT TELEKOMUNIKASI INDONESIA
24560 1135 322 204 Bharti Airtel Ltd., Telemedia
9583 1055 77 494 Sify Limited
4808 1026 2096 294 CNCGROUP IP network: China169
9829 1004 868 53 BSNL National Internet Backbo
18101 938 116 142 Reliance Infocom Ltd Internet
17488 936 162 96 Hathway IP Over Cable Interne
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3673 3838 258 bellsouth.net, inc.
4323 2567 1093 401 Time Warner Telecom
1785 1787 681 132 PaeTec Communications, Inc.
18566 1606 331 195 Covad Communications
6478 1572 302 37 AT&T Worldnet Services
20115 1524 1541 648 Charter Communications
19262 1487 4935 303 Verizon Global Networks
7018 1360 6675 886 AT&T WorldNet Services
11492 1326 240 15 Cable One
22773 1286 2865 79 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6830 515 1780 318 UPC Distribution Services
3292 455 2013 392 TDC Tele Danmark
34984 454 95 205 BILISIM TELEKOM
8866 443 133 24 Bulgarian Telecommunication C
9198 423 267 15 Kazakhtelecom Data Network Ad
3320 412 7604 359 Deutsche Telekom AG
20940 411 98 317 Akamai Technologies European
8551 403 353 46 Bezeq International
12479 398 577 6 Uni2 Autonomous System
702 393 1800 307 UUNET - Commercial IP service
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
10620 1403 262 152 TVCABLE BOGOTA
28573 1250 970 83 NET Servicos de Comunicao S.A
8151 1246 2674 369 UniNet S.A. de C.V.
6503 1225 354 73 AVANTEL, S.A.
7303 923 465 148 Telecom Argentina Stet-France
14420 638 52 91 CORPORACION NACIONAL DE TELEC
22047 567 310 15 VTR PUNTO NET S.A.
3816 515 225 98 Empresa Nacional de Telecomun
13489 494 217 105 Orbitel S.A. E.S.P.
11172 486 83 79 Servicios Alestra S.A de C.V
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8452 845 445 11 TEDATA
24863 774 147 39 LINKdotNET AS number
15475 421 90 8 Nile Online
36992 298 271 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 148 441 86 MTN Network Solutions
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3673 3838 258 bellsouth.net, inc.
4323 2567 1093 401 Time Warner Telecom
4766 2418 9509 897 Korea Telecom (KIX)
23456 2015 493 1102 32-bit ASN transition
1785 1787 681 132 PaeTec Communications, Inc.
18566 1606 331 195 Covad Communications
6478 1572 302 37 AT&T Worldnet Services
7545 1556 301 84 TPG Internet Pty Ltd
20115 1524 1541 648 Charter Communications
19262 1487 4935 303 Verizon Global Networks
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 2567 2166 Time Warner Telecom
1785 1787 1655 PaeTec Communications, Inc.
6478 1572 1535 AT&T Worldnet Services
4766 2418 1521 Korea Telecom (KIX)
7545 1556 1472 TPG Internet Pty Ltd
17974 1454 1421 PT TELEKOMUNIKASI INDONESIA
18566 1606 1411 Covad Communications
4755 1480 1322 TATA Communications formerly
11492 1326 1311 Cable One
10620 1403 1251 TVCABLE BOGOTA
Complete listing at http://thyme.rand.apnic.net/current/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 4323 Time Warner Telecom
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
26973 UNALLOCATED 12.39.155.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.159.0/24 7018 AT&T WorldNet Servic
25639 UNALLOCATED 12.41.169.0/24 7018 AT&T WorldNet Servic
13317 UNALLOCATED 12.44.10.0/24 7018 AT&T WorldNet Servic
Complete listing at http://thyme.rand.apnic.net/current/data-badAS
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
2.56.0.0/16 44559 E-Rent LLC
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
31.22.80.0/21 8455 ATOM86
41.57.192.0/18 22750 BCSNET
41.222.79.0/24 36938 >>UNKNOWN<<
Complete listing at http://thyme.rand.apnic.net/current/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 /11:74 /12:218
/13:448 /14:766 /15:1374 /16:11579 /17:5709 /18:9436
/19:19092 /20:24807 /21:25244 /22:33643 /23:32191 /24:183844
/25:1138 /26:1275 /27:711 /28:40 /29:9 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2267 3673 bellsouth.net, inc.
18566 1585 1606 Covad Communications
6478 1526 1572 AT&T Worldnet Services
4323 1377 2567 Time Warner Telecom
10620 1293 1403 TVCABLE BOGOTA
11492 1274 1326 Cable One
23456 1084 2015 32-bit ASN transition
7011 1063 1164 Citizens Utilities
1785 1056 1787 PaeTec Communications, Inc.
6503 1001 1225 AVANTEL, S.A.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:294 2:56 4:14 5:1 8:346 12:2020
13:1 14:427 15:15 16:3 17:8 20:9
23:3 24:1571 27:701 31:21 32:60 33:3
34:2 37:1 38:748 39:1 40:101 41:2372
44:3 46:769 47:4 49:146 50:124 52:13
55:4 56:2 57:30 58:819 59:501 60:387
61:1170 62:1005 63:1918 64:3877 65:2359 66:4368
67:1806 68:1062 69:2928 70:698 71:340 72:1897
73:1 74:2329 75:283 76:338 77:851 78:697
79:451 80:1094 81:823 82:511 83:463 84:648
85:1029 86:553 87:759 88:343 89:1564 90:175
91:3652 92:510 93:1043 94:1224 95:783 96:456
97:252 98:811 99:35 101:49 106:1 107:4
108:48 109:922 110:519 111:678 112:325 113:392
114:511 115:719 116:969 117:673 118:755 119:1092
120:283 121:761 122:1611 123:1057 124:1318 125:1256
128:265 129:172 130:173 131:565 132:108 133:20
134:216 135:49 136:213 137:142 138:299 139:112
140:485 141:173 142:380 143:391 144:481 145:52
146:439 147:190 148:635 149:271 150:167 151:187
152:299 153:180 154:3 155:383 156:184 157:348
158:132 159:379 160:317 161:209 162:278 163:165
164:493 165:350 166:502 167:411 168:722 169:154
170:783 171:70 172:2 173:1256 174:532 175:350
177:74 178:758 180:793 181:4 182:410 183:192
184:232 185:1 186:1111 187:896 188:919 189:1032
190:4761 192:5770 193:4794 194:3489 195:2929 196:1212
197:15 198:3588 199:3883 200:5584 201:1589 202:8404
203:8456 204:4114 205:2317 206:2634 207:3030 208:3907
209:3498 210:2721 211:1363 212:1953 213:1708 214:763
215:66 216:4885 217:1651 218:557 219:380 220:1192
221:480 222:313 223:100
End of report
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