Routing Table Report 04:00 +10GMT Tue 17 May, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 356947
Prefixes after maximum aggregation: 161733
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 176248
Total ASes present in the Internet Routing Table: 37575
Prefixes per ASN: 9.50
Origin-only ASes present in the Internet Routing Table: 31402
Origin ASes announcing only one prefix: 15094
Transit ASes present in the Internet Routing Table: 5096
Transit-only ASes present in the Internet Routing Table: 137
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 36
Max AS path prepend of ASN (48687) 24
Prefixes from unregistered ASNs in the Routing Table: 639
Unregistered ASNs in the Routing Table: 329
Number of 32-bit ASNs allocated by the RIRs: 1357
Number of 32-bit ASNs visible in the Routing Table: 1077
Prefixes from 32-bit ASNs in the Routing Table: 2421
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 151
Number of addresses announced to Internet: 2426740928
Equivalent to 144 /8s, 165 /16s and 32 /24s
Percentage of available address space announced: 65.5
Percentage of allocated address space announced: 65.5
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.8
Total number of prefixes smaller than registry allocations: 148305
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 89344
Total APNIC prefixes after maximum aggregation: 29941
APNIC Deaggregation factor: 2.98
Prefixes being announced from the APNIC address blocks: 85698
Unique aggregates announced from the APNIC address blocks: 36600
APNIC Region origin ASes present in the Internet Routing Table: 4445
APNIC Prefixes per ASN: 19.28
APNIC Region origin ASes announcing only one prefix: 1232
APNIC Region transit ASes present in the Internet Routing Table: 707
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 20
Number of APNIC region 32-bit ASNs visible in the Routing Table: 49
Number of APNIC addresses announced to Internet: 614473504
Equivalent to 36 /8s, 160 /16s and 31 /24s
Percentage of available APNIC address space announced: 77.9
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: 140156
Total ARIN prefixes after maximum aggregation: 71522
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 112459
Unique aggregates announced from the ARIN address blocks: 45477
ARIN Region origin ASes present in the Internet Routing Table: 14361
ARIN Prefixes per ASN: 7.83
ARIN Region origin ASes announcing only one prefix: 5483
ARIN Region transit ASes present in the Internet Routing Table: 1498
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: 12
Number of ARIN addresses announced to Internet: 800043008
Equivalent to 47 /8s, 175 /16s and 176 /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: 84246
Total RIPE prefixes after maximum aggregation: 48183
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 77747
Unique aggregates announced from the RIPE address blocks: 51471
RIPE Region origin ASes present in the Internet Routing Table: 15607
RIPE Prefixes per ASN: 4.98
RIPE Region origin ASes announcing only one prefix: 7817
RIPE Region transit ASes present in the Internet Routing Table: 2460
Average RIPE Region AS path length visible: 4.7
Max RIPE Region AS path length visible: 36
Number of RIPE region 32-bit ASNs visible in the Routing Table: 796
Number of RIPE addresses announced to Internet: 469749504
Equivalent to 27 /8s, 255 /16s and 207 /24s
Percentage of available RIPE address space announced: 75.7
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: 32729
Total LACNIC prefixes after maximum aggregation: 7487
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31756
Unique aggregates announced from the LACNIC address blocks: 16669
LACNIC Region origin ASes present in the Internet Routing Table: 1450
LACNIC Prefixes per ASN: 21.90
LACNIC Region origin ASes announcing only one prefix: 426
LACNIC Region transit ASes present in the Internet Routing Table: 268
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: 215
Number of LACNIC addresses announced to Internet: 83399936
Equivalent to 4 /8s, 248 /16s and 149 /24s
Percentage of available LACNIC address space announced: 55.2
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: 7833
Total AfriNIC prefixes after maximum aggregation: 1865
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 6188
Unique aggregates announced from the AfriNIC address blocks: 1913
AfriNIC Region origin ASes present in the Internet Routing Table: 446
AfriNIC Prefixes per ASN: 13.87
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: 4.8
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23120896
Equivalent to 1 /8s, 96 /16s and 204 /24s
Percentage of available AfriNIC address space announced: 34.5
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 2453 9493 916 Korea Telecom (KIX)
17974 1833 516 32 PT TELEKOMUNIKASI INDONESIA
7545 1553 301 85 TPG Internet Pty Ltd
4755 1466 634 168 TATA Communications formerly
24560 1149 336 184 Bharti Airtel Ltd., Telemedia
7552 1105 1064 7 Vietel Corporation
4808 1080 2141 299 CNCGROUP IP network: China169
9583 1080 80 511 Sify Limited
9829 1039 874 51 BSNL National Internet Backbo
18101 931 116 140 Reliance Infocom Ltd Internet
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 3645 3822 256 bellsouth.net, inc.
4323 1979 1081 396 Time Warner Telecom
18566 1822 357 232 Covad Communications
1785 1775 681 123 PaeTec Communications, Inc.
6478 1661 312 145 AT&T Worldnet Services
20115 1536 1539 632 Charter Communications
19262 1498 4949 298 Verizon Global Networks
7018 1367 7075 898 AT&T WorldNet Services
22773 1329 2897 87 Cox Communications, Inc.
11492 1279 240 15 Cable One
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 519 1780 321 UPC Distribution Services
34984 512 106 182 BILISIM TELEKOM
3292 459 1998 392 TDC Tele Danmark
20940 456 133 350 Akamai Technologies European
8866 442 134 26 Bulgarian Telecommunication C
29049 439 32 45 AzerSat LLC.
12479 430 577 6 Uni2 Autonomous System
3320 420 7608 367 Deutsche Telekom AG
8551 406 355 45 Bezeq International
702 395 1802 309 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 1477 272 152 TVCABLE BOGOTA
8151 1369 2702 360 UniNet S.A. de C.V.
28573 1315 990 86 NET Servicos de Comunicao S.A
7303 931 470 150 Telecom Argentina Stet-France
6503 733 354 73 AVANTEL, S.A.
14420 667 54 91 CORPORACION NACIONAL DE TELEC
22047 555 310 15 VTR PUNTO NET S.A.
3816 521 227 100 Empresa Nacional de Telecomun
13489 499 242 115 Orbitel S.A. E.S.P.
11172 493 84 83 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 894 445 11 TEDATA
24863 782 147 37 LINKdotNET AS number
15475 416 90 8 Nile Online
36992 288 331 17 Etisalat MISR
3741 268 985 228 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
33776 217 12 11 Starcomms Nigeria Limited
24835 206 78 10 RAYA Telecom - Egypt
29571 162 17 11 Ci Telecom Autonomous system
16637 150 441 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 3645 3822 256 bellsouth.net, inc.
4766 2453 9493 916 Korea Telecom (KIX)
23456 2421 686 1320 32-bit ASN transition
4323 1979 1081 396 Time Warner Telecom
17974 1833 516 32 PT TELEKOMUNIKASI INDONESIA
18566 1822 357 232 Covad Communications
1785 1775 681 123 PaeTec Communications, Inc.
6478 1661 312 145 AT&T Worldnet Services
7545 1553 301 85 TPG Internet Pty Ltd
20115 1536 1539 632 Charter Communications
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
17974 1833 1801 PT TELEKOMUNIKASI INDONESIA
1785 1775 1652 PaeTec Communications, Inc.
18566 1822 1590 Covad Communications
4323 1979 1583 Time Warner Telecom
4766 2453 1537 Korea Telecom (KIX)
6478 1661 1516 AT&T Worldnet Services
7545 1553 1468 TPG Internet Pty Ltd
10620 1477 1325 TVCABLE BOGOTA
4755 1466 1298 TATA Communications formerly
11492 1279 1264 Cable One
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
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
23502 UNALLOCATED 12.44.44.0/24 7018 AT&T WorldNet Servic
Complete listing at http://thyme.rand.apnic.net/current/data-badAS
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
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
27.0.128.0/17 7514 Media Exchange, Inc.
41.79.32.0/22 14988 Botswana Telecommunications C
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>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 /8:20 /9:12 /10:28 /11:78 /12:223
/13:460 /14:791 /15:1392 /16:11722 /17:5787 /18:9711
/19:19320 /20:25589 /21:25830 /22:34147 /23:32898 /24:185692
/25:1088 /26:1273 /27:709 /28:161 /29:8 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2245 3645 bellsouth.net, inc.
18566 1784 1822 Covad Communications
6478 1616 1661 AT&T Worldnet Services
10620 1367 1477 TVCABLE BOGOTA
11492 1225 1279 Cable One
23456 1190 2421 32-bit ASN transition
7011 1062 1162 Citizens Utilities
1785 1049 1775 PaeTec Communications, Inc.
4323 890 1979 Time Warner Telecom
22773 846 1329 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:270 2:52 4:14 5:1 6:3 8:353
12:1987 13:1 14:457 15:15 16:3 17:8
20:10 23:7 24:1640 27:743 31:336 32:60
33:4 34:2 37:1 38:737 40:101 41:2514
42:5 44:3 46:905 47:4 49:177 50:401
52:13 55:6 56:2 57:30 58:852 59:484
60:387 61:1255 62:976 63:1924 64:3925 65:2298
66:4142 67:1877 68:1092 69:2988 70:705 71:352
72:1884 73:1 74:2348 75:308 76:342 77:867
78:682 79:463 80:1095 81:818 82:494 83:445
84:628 85:1068 86:594 87:745 88:320 89:1566
90:202 91:3737 92:513 93:1051 94:1251 95:801
96:484 97:246 98:844 99:35 101:58 103:12
106:1 107:6 108:85 109:942 110:589 111:710
112:320 113:397 114:523 115:664 116:957 117:678
118:818 119:1121 120:306 121:678 122:1622 123:1075
124:1254 125:1227 128:259 129:167 130:164 131:570
132:110 133:19 134:217 135:49 136:208 137:143
138:304 139:108 140:479 141:239 142:403 143:404
144:486 145:53 146:438 147:207 148:592 149:243
150:172 151:187 152:306 153:178 154:3 155:396
156:194 157:352 158:131 159:387 160:319 161:206
162:279 163:163 164:500 165:352 166:510 167:430
168:726 169:153 170:795 171:77 172:1 173:1549
174:551 175:367 177:119 178:910 180:842 181:15
182:442 183:205 184:263 185:1 186:1170 187:756
188:830 189:909 190:4777 192:5786 193:4846 194:3477
195:2977 196:1209 197:17 198:3566 199:3894 200:5528
201:1498 202:8351 203:8457 204:4155 205:2325 206:2724
207:2912 208:3966 209:3422 210:2738 211:1386 212:1976
213:1733 214:724 215:71 216:4844 217:1632 218:565
219:361 220:1201 221:481 222:342 223:146
End of report
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