Routing Table Report 04:00 +10GMT Tue 26 Jul, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 364392
Prefixes after maximum aggregation: 165760
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 180971
Total ASes present in the Internet Routing Table: 38275
Prefixes per ASN: 9.52
Origin-only ASes present in the Internet Routing Table: 31814
Origin ASes announcing only one prefix: 15309
Transit ASes present in the Internet Routing Table: 5195
Transit-only ASes present in the Internet Routing Table: 138
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 34
Max AS path prepend of ASN (22394) 31
Prefixes from unregistered ASNs in the Routing Table: 965
Unregistered ASNs in the Routing Table: 553
Number of 32-bit ASNs allocated by the RIRs: 1592
Number of 32-bit ASNs visible in the Routing Table: 1266
Prefixes from 32-bit ASNs in the Routing Table: 2934
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 117
Number of addresses announced to Internet: 2485801792
Equivalent to 148 /8s, 42 /16s and 83 /24s
Percentage of available address space announced: 67.1
Percentage of allocated address space announced: 67.1
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 91.1
Total number of prefixes smaller than registry allocations: 151785
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 91219
Total APNIC prefixes after maximum aggregation: 30357
APNIC Deaggregation factor: 3.00
Prefixes being announced from the APNIC address blocks: 87807
Unique aggregates announced from the APNIC address blocks: 37447
APNIC Region origin ASes present in the Internet Routing Table: 4523
APNIC Prefixes per ASN: 19.41
APNIC Region origin ASes announcing only one prefix: 1251
APNIC Region transit ASes present in the Internet Routing Table: 712
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 18
Number of APNIC region 32-bit ASNs visible in the Routing Table: 62
Number of APNIC addresses announced to Internet: 622381344
Equivalent to 37 /8s, 24 /16s and 201 /24s
Percentage of available APNIC address space announced: 78.9
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: 141780
Total ARIN prefixes after maximum aggregation: 73241
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 113603
Unique aggregates announced from the ARIN address blocks: 46701
ARIN Region origin ASes present in the Internet Routing Table: 14522
ARIN Prefixes per ASN: 7.82
ARIN Region origin ASes announcing only one prefix: 5573
ARIN Region transit ASes present in the Internet Routing Table: 1525
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 34
Number of ARIN region 32-bit ASNs visible in the Routing Table: 12
Number of ARIN addresses announced to Internet: 802773632
Equivalent to 47 /8s, 217 /16s and 90 /24s
Percentage of available ARIN address space announced: 63.8
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: 86522
Total RIPE prefixes after maximum aggregation: 49342
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 79902
Unique aggregates announced from the RIPE address blocks: 52916
RIPE Region origin ASes present in the Internet Routing Table: 15809
RIPE Prefixes per ASN: 5.05
RIPE Region origin ASes announcing only one prefix: 7884
RIPE Region transit ASes present in the Internet Routing Table: 2509
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 33
Number of RIPE region 32-bit ASNs visible in the Routing Table: 916
Number of RIPE addresses announced to Internet: 484092032
Equivalent to 28 /8s, 218 /16s and 168 /24s
Percentage of available RIPE address space announced: 78.0
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: 33562
Total LACNIC prefixes after maximum aggregation: 7628
LACNIC Deaggregation factor: 4.40
Prefixes being announced from the LACNIC address blocks: 32792
Unique aggregates announced from the LACNIC address blocks: 17169
LACNIC Region origin ASes present in the Internet Routing Table: 1492
LACNIC Prefixes per ASN: 21.98
LACNIC Region origin ASes announcing only one prefix: 445
LACNIC Region transit ASes present in the Internet Routing Table: 276
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: 272
Number of LACNIC addresses announced to Internet: 86450176
Equivalent to 5 /8s, 39 /16s and 32 /24s
Percentage of available LACNIC address space announced: 57.3
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: 8196
Total AfriNIC prefixes after maximum aggregation: 1969
AfriNIC Deaggregation factor: 4.16
Prefixes being announced from the AfriNIC address blocks: 6483
Unique aggregates announced from the AfriNIC address blocks: 2034
AfriNIC Region origin ASes present in the Internet Routing Table: 476
AfriNIC Prefixes per ASN: 13.62
AfriNIC Region origin ASes announcing only one prefix: 156
AfriNIC Region transit ASes present in the Internet Routing Table: 102
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: 4
Number of AfriNIC addresses announced to Internet: 25747456
Equivalent to 1 /8s, 136 /16s and 224 /24s
Percentage of available AfriNIC address space announced: 38.4
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 2481 11045 947 Korea Telecom (KIX)
17974 1790 508 32 PT TELEKOMUNIKASI INDONESIA
7545 1556 301 85 TPG Internet Pty Ltd
4755 1506 635 171 TATA Communications formerly
7552 1298 1064 7 Vietel Corporation
24560 1161 336 187 Bharti Airtel Ltd., Telemedia
9829 1119 936 41 BSNL National Internet Backbo
9583 1069 79 505 Sify Limited
4808 1049 2092 299 CNCGROUP IP network: China169
17488 970 189 110 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 3618 3818 238 bellsouth.net, inc.
18566 1913 365 241 Covad Communications
1785 1810 681 121 PaeTec Communications, Inc.
4323 1615 1082 401 Time Warner Telecom
20115 1590 1538 623 Charter Communications
19262 1411 4760 391 Verizon Global Networks
7018 1363 7068 890 AT&T WorldNet Services
22773 1353 2897 89 Cox Communications, Inc.
7029 1293 791 304 Windstream Communications Inc
2386 1258 520 907 AT&T Data Communications Serv
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
34984 534 106 185 BILISIM TELEKOM
6830 512 1788 316 UPC Distribution Services
3292 468 2078 403 TDC Tele Danmark
20940 462 132 354 Akamai Technologies European
12479 455 593 7 Uni2 Autonomous System
8866 453 133 26 Bulgarian Telecommunication C
29049 432 32 47 AzerSat LLC.
3320 424 8151 370 Deutsche Telekom AG
8551 404 354 44 Bezeq International
702 397 1802 310 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 1559 287 163 TVCABLE BOGOTA
28573 1283 995 78 NET Servicos de Comunicao S.A
8151 1270 2746 352 UniNet S.A. de C.V.
7303 1002 513 175 Telecom Argentina Stet-France
6503 751 354 73 AVANTEL, S.A.
14420 700 56 85 CORPORACION NACIONAL DE TELEC
22047 578 322 17 VTR PUNTO NET S.A.
3816 532 232 97 Empresa Nacional de Telecomun
7738 516 986 31 Telecomunicacoes da Bahia S.A
27947 508 53 53 Telconet S.A
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 794 445 11 TEDATA
24863 787 147 36 LINKdotNET AS number
15475 511 74 8 Nile Online
3741 265 937 226 The Internet Solution
36992 261 415 15 Etisalat MISR
6713 260 519 14 Itissalat Al-MAGHRIB
33776 226 13 5 Starcomms Nigeria Limited
15706 204 32 6 Sudatel Internet Exchange Aut
24835 177 78 10 RAYA Telecom - Egypt
29571 158 17 11 Ci Telecom Autonomous system
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 3618 3818 238 bellsouth.net, inc.
23456 2934 710 1568 32-bit ASN transition
4766 2481 11045 947 Korea Telecom (KIX)
18566 1913 365 241 Covad Communications
1785 1810 681 121 PaeTec Communications, Inc.
17974 1790 508 32 PT TELEKOMUNIKASI INDONESIA
4323 1615 1082 401 Time Warner Telecom
20115 1590 1538 623 Charter Communications
10620 1559 287 163 TVCABLE BOGOTA
7545 1556 301 85 TPG Internet Pty Ltd
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 1790 1758 PT TELEKOMUNIKASI INDONESIA
1785 1810 1689 PaeTec Communications, Inc.
18566 1913 1672 Covad Communications
4766 2481 1534 Korea Telecom (KIX)
7545 1556 1471 TPG Internet Pty Ltd
10620 1559 1396 TVCABLE BOGOTA
23456 2934 1366 32-bit ASN transition
4755 1506 1335 TATA Communications formerly
7552 1298 1291 Vietel Corporation
22773 1353 1264 Cox Communications, Inc.
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
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
62.61.220.0/24 24974 Tachyon Europe BV - Wireless
62.61.221.0/24 24974 Tachyon Europe BV - Wireless
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 /10:27 /11:80 /12:232
/13:465 /14:798 /15:1403 /16:12057 /17:5868 /18:9827
/19:19507 /20:26182 /21:26270 /22:34923 /23:33857 /24:189710
/25:1090 /26:1270 /27:737 /28:40 /29:9 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2238 3618 bellsouth.net, inc.
18566 1869 1913 Covad Communications
10620 1454 1559 TVCABLE BOGOTA
23456 1445 2934 32-bit ASN transition
11492 1096 1142 Cable One
7011 1056 1158 Citizens Utilities
1785 1053 1810 PaeTec Communications, Inc.
7029 1040 1293 Windstream Communications Inc
6478 997 1025 AT&T Worldnet Services
22773 868 1353 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:338 2:45 4:16 5:1 6:3 8:336
12:1964 13:1 14:490 15:15 16:3 17:5
20:10 23:17 24:1680 27:835 31:503 32:64
33:4 34:2 36:4 38:729 40:104 41:2605
42:35 44:3 46:1054 47:3 49:204 50:383
52:13 54:2 55:3 56:2 57:34 58:863
59:471 60:385 61:1183 62:1044 63:1931 64:3991
65:2299 66:3893 67:1885 68:1112 69:3052 70:771
71:373 72:1867 74:2425 75:321 76:341 77:860
78:703 79:465 80:1114 81:839 82:498 83:466
84:691 85:1059 86:517 87:764 88:332 89:1537
90:224 91:3950 92:526 93:1060 94:1338 95:869
96:420 97:263 98:891 99:37 101:81 103:148
106:77 107:25 108:73 109:1023 110:609 111:715
112:305 113:409 114:557 115:682 116:984 117:682
118:868 119:1179 120:316 121:676 122:1607 123:966
124:1310 125:1274 128:246 129:169 130:170 131:579
132:111 133:21 134:214 135:52 136:215 137:139
138:300 139:115 140:479 141:253 142:403 143:419
144:478 145:54 146:453 147:219 148:617 149:249
150:165 151:189 152:338 153:182 154:5 155:399
156:198 157:351 158:140 159:455 160:315 161:203
162:310 163:167 164:506 165:367 166:531 167:433
168:746 169:153 170:838 171:81 172:1 173:1615
174:620 175:384 176:143 177:176 178:1009 180:909
181:23 182:510 183:234 184:343 185:1 186:1308
187:760 188:891 189:950 190:5001 192:5913 193:4976
194:3518 195:3018 196:1217 197:41 198:3583 199:3988
200:5570 201:1475 202:8396 203:8451 204:4231 205:2332
206:2667 207:2799 208:3993 209:3433 210:2673 211:1440
212:2007 213:1735 214:776 215:69 216:4942 217:1651
218:549 219:348 220:1223 221:497 222:359 223:229
End of report
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