Routing Table Report 04:00 +10GMT Wed 11 May, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 357082
Prefixes after maximum aggregation: 161463
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 175945
Total ASes present in the Internet Routing Table: 37523
Prefixes per ASN: 9.52
Origin-only ASes present in the Internet Routing Table: 31382
Origin ASes announcing only one prefix: 15099
Transit ASes present in the Internet Routing Table: 5080
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: 601
Unregistered ASNs in the Routing Table: 307
Number of 32-bit ASNs allocated by the RIRs: 1337
Number of 32-bit ASNs visible in the Routing Table: 1061
Prefixes from 32-bit ASNs in the Routing Table: 2384
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 150
Number of addresses announced to Internet: 2424687040
Equivalent to 144 /8s, 133 /16s and 201 /24s
Percentage of available address space announced: 65.4
Percentage of allocated address space announced: 65.4
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.7
Total number of prefixes smaller than registry allocations: 148451
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 89325
Total APNIC prefixes after maximum aggregation: 29959
APNIC Deaggregation factor: 2.98
Prefixes being announced from the APNIC address blocks: 85689
Unique aggregates announced from the APNIC address blocks: 36633
APNIC Region origin ASes present in the Internet Routing Table: 4443
APNIC Prefixes per ASN: 19.29
APNIC Region origin ASes announcing only one prefix: 1235
APNIC Region transit ASes present in the Internet Routing Table: 705
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 18
Number of APNIC region 32-bit ASNs visible in the Routing Table: 48
Number of APNIC addresses announced to Internet: 613631520
Equivalent to 36 /8s, 147 /16s and 70 /24s
Percentage of available APNIC address space announced: 77.8
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: 140599
Total ARIN prefixes after maximum aggregation: 71383
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 112850
Unique aggregates announced from the ARIN address blocks: 45394
ARIN Region origin ASes present in the Internet Routing Table: 14371
ARIN Prefixes per ASN: 7.85
ARIN Region origin ASes announcing only one prefix: 5499
ARIN Region transit ASes present in the Internet Routing Table: 1496
Average ARIN Region AS path length visible: 3.9
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: 800113408
Equivalent to 47 /8s, 176 /16s and 195 /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: 84143
Total RIPE prefixes after maximum aggregation: 48084
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 77571
Unique aggregates announced from the RIPE address blocks: 51276
RIPE Region origin ASes present in the Internet Routing Table: 15567
RIPE Prefixes per ASN: 4.98
RIPE Region origin ASes announcing only one prefix: 7799
RIPE Region transit ASes present in the Internet Routing Table: 2454
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: 786
Number of RIPE addresses announced to Internet: 468302080
Equivalent to 27 /8s, 233 /16s and 185 /24s
Percentage of available RIPE address space announced: 75.4
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: 32691
Total LACNIC prefixes after maximum aggregation: 7491
LACNIC Deaggregation factor: 4.36
Prefixes being announced from the LACNIC address blocks: 31710
Unique aggregates announced from the LACNIC address blocks: 16627
LACNIC Region origin ASes present in the Internet Routing Table: 1449
LACNIC Prefixes per ASN: 21.88
LACNIC Region origin ASes announcing only one prefix: 432
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: 210
Number of LACNIC addresses announced to Internet: 83292416
Equivalent to 4 /8s, 246 /16s and 241 /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: 7726
Total AfriNIC prefixes after maximum aggregation: 1852
AfriNIC Deaggregation factor: 4.17
Prefixes being announced from the AfriNIC address blocks: 6103
Unique aggregates announced from the AfriNIC address blocks: 1880
AfriNIC Region origin ASes present in the Internet Routing Table: 444
AfriNIC Prefixes per ASN: 13.75
AfriNIC Region origin ASes announcing only one prefix: 134
AfriNIC Region transit ASes present in the Internet Routing Table: 96
Average AfriNIC Region AS path length visible: 4.7
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: 23026176
Equivalent to 1 /8s, 95 /16s and 90 /24s
Percentage of available AfriNIC address space announced: 34.3
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 2451 9493 916 Korea Telecom (KIX)
17974 1821 515 29 PT TELEKOMUNIKASI INDONESIA
7545 1566 301 85 TPG Internet Pty Ltd
4755 1461 634 167 TATA Communications formerly
24560 1152 336 184 Bharti Airtel Ltd., Telemedia
7552 1103 1064 7 Vietel Corporation
9583 1080 80 511 Sify Limited
9829 1039 874 51 BSNL National Internet Backbo
4808 1036 2087 294 CNCGROUP IP network: China169
17488 938 165 100 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 3648 3822 255 bellsouth.net, inc.
4323 2562 1088 399 Time Warner Telecom
18566 1786 355 222 Covad Communications
1785 1784 681 127 PaeTec Communications, Inc.
6478 1668 313 51 AT&T Worldnet Services
20115 1532 1538 635 Charter Communications
19262 1496 4949 298 Verizon Global Networks
7018 1359 6927 887 AT&T WorldNet Services
22773 1330 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 510 106 182 BILISIM TELEKOM
3292 458 1998 392 TDC Tele Danmark
20940 446 131 342 Akamai Technologies European
29049 443 33 43 AzerSat LLC.
8866 442 134 26 Bulgarian Telecommunication C
3320 423 7609 368 Deutsche Telekom AG
12479 416 577 6 Uni2 Autonomous System
8402 411 320 11 Corbina telecom
8551 406 355 45 Bezeq International
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 1467 270 155 TVCABLE BOGOTA
8151 1369 2700 362 UniNet S.A. de C.V.
28573 1301 990 86 NET Servicos de Comunicao S.A
7303 930 470 149 Telecom Argentina Stet-France
6503 734 354 73 AVANTEL, S.A.
14420 665 53 91 CORPORACION NACIONAL DE TELEC
22047 557 310 15 VTR PUNTO NET S.A.
3816 518 226 99 Empresa Nacional de Telecomun
11172 495 84 83 Servicios Alestra S.A de C.V
13489 489 238 118 Orbitel S.A. E.S.P.
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 898 445 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 240 215 13 Itissalat Al-MAGHRIB
24835 207 78 10 RAYA Telecom - Egypt
33776 196 12 12 Starcomms Nigeria Limited
29571 161 17 11 Ci Telecom Autonomous system
16637 147 438 83 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 3648 3822 255 bellsouth.net, inc.
4323 2562 1088 399 Time Warner Telecom
4766 2451 9493 916 Korea Telecom (KIX)
23456 2384 674 1300 32-bit ASN transition
17974 1821 515 29 PT TELEKOMUNIKASI INDONESIA
18566 1786 355 222 Covad Communications
1785 1784 681 127 PaeTec Communications, Inc.
6478 1668 313 51 AT&T Worldnet Services
7545 1566 301 85 TPG Internet Pty Ltd
20115 1532 1538 635 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
4323 2562 2163 Time Warner Telecom
17974 1821 1792 PT TELEKOMUNIKASI INDONESIA
1785 1784 1657 PaeTec Communications, Inc.
6478 1668 1617 AT&T Worldnet Services
18566 1786 1564 Covad Communications
4766 2451 1535 Korea Telecom (KIX)
7545 1566 1481 TPG Internet Pty Ltd
10620 1467 1312 TVCABLE BOGOTA
4755 1461 1294 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
31.211.184.0/21 174 Cogent Communications
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/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
/13:458 /14:790 /15:1392 /16:11718 /17:5754 /18:9693
/19:19285 /20:25529 /21:25791 /22:34076 /23:32853 /24:186130
/25:1092 /26:1274 /27:710 /28:160 /29:8 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2249 3648 bellsouth.net, inc.
18566 1748 1786 Covad Communications
6478 1622 1668 AT&T Worldnet Services
10620 1357 1467 TVCABLE BOGOTA
4323 1271 2562 Time Warner Telecom
11492 1225 1279 Cable One
23456 1178 2384 32-bit ASN transition
7011 1059 1159 Citizens Utilities
1785 1053 1784 PaeTec Communications, Inc.
22773 847 1330 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:265 2:61 4:14 5:1 6:3 8:353
12:1989 13:1 14:452 15:15 16:3 17:8
20:10 23:6 24:1640 27:737 31:306 32:60
33:3 34:2 37:1 38:764 40:101 41:2447
42:5 44:3 46:897 47:4 49:172 50:394
52:13 55:5 56:2 57:30 58:844 59:483
60:388 61:1253 62:983 63:1926 64:3931 65:2306
66:4310 67:1876 68:1093 69:2976 70:701 71:347
72:1884 73:1 74:2343 75:310 76:340 77:870
78:688 79:459 80:1095 81:814 82:489 83:450
84:624 85:1074 86:593 87:747 88:326 89:1595
90:192 91:3707 92:512 93:1063 94:1250 95:809
96:483 97:255 98:841 99:35 101:70 103:12
106:1 107:6 108:85 109:938 110:586 111:709
112:318 113:398 114:527 115:659 116:946 117:683
118:818 119:1156 120:305 121:673 122:1620 123:1076
124:1255 125:1224 128:259 129:164 130:165 131:569
132:110 133:19 134:218 135:49 136:214 137:143
138:302 139:113 140:481 141:239 142:400 143:397
144:488 145:53 146:440 147:210 148:594 149:243
150:171 151:187 152:310 153:179 154:16 155:396
156:191 157:353 158:131 159:386 160:315 161:206
162:279 163:187 164:499 165:351 166:513 167:424
168:725 169:152 170:791 171:76 172:1 173:1546
174:552 175:371 177:107 178:866 180:829 181:20
182:439 183:208 184:262 185:1 186:1155 187:762
188:839 189:897 190:4856 192:5795 193:4846 194:3480
195:2980 196:1189 197:16 198:3573 199:3897 200:5527
201:1495 202:8350 203:8460 204:4146 205:2319 206:2753
207:3043 208:3973 209:3500 210:2731 211:1373 212:1965
213:1724 214:741 215:68 216:4895 217:1664 218:565
219:370 220:1204 221:483 222:342 223:146
End of report
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