Routing Table Report 04:00 +10GMT Wed 18 May, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 357140
Prefixes after maximum aggregation: 161951
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 176414
Total ASes present in the Internet Routing Table: 37576
Prefixes per ASN: 9.50
Origin-only ASes present in the Internet Routing Table: 31407
Origin ASes announcing only one prefix: 15087
Transit ASes present in the Internet Routing Table: 5093
Transit-only ASes present in the Internet Routing Table: 133
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: 633
Unregistered ASNs in the Routing Table: 326
Number of 32-bit ASNs allocated by the RIRs: 1356
Number of 32-bit ASNs visible in the Routing Table: 1076
Prefixes from 32-bit ASNs in the Routing Table: 2422
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 167
Number of addresses announced to Internet: 2428896960
Equivalent to 144 /8s, 198 /16s and 6 /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: 148327
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 89445
Total APNIC prefixes after maximum aggregation: 29972
APNIC Deaggregation factor: 2.98
Prefixes being announced from the APNIC address blocks: 85795
Unique aggregates announced from the APNIC address blocks: 36644
APNIC Region origin ASes present in the Internet Routing Table: 4442
APNIC Prefixes per ASN: 19.31
APNIC Region origin ASes announcing only one prefix: 1229
APNIC Region transit ASes present in the Internet Routing Table: 708
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 19
Number of APNIC region 32-bit ASNs visible in the Routing Table: 46
Number of APNIC addresses announced to Internet: 614436896
Equivalent to 36 /8s, 159 /16s and 144 /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: 140178
Total ARIN prefixes after maximum aggregation: 71669
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 112456
Unique aggregates announced from the ARIN address blocks: 45494
ARIN Region origin ASes present in the Internet Routing Table: 14364
ARIN Prefixes per ASN: 7.83
ARIN Region origin ASes announcing only one prefix: 5484
ARIN Region transit ASes present in the Internet Routing Table: 1499
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: 799860736
Equivalent to 47 /8s, 172 /16s and 232 /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: 84269
Total RIPE prefixes after maximum aggregation: 48206
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 77767
Unique aggregates announced from the RIPE address blocks: 51506
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: 7809
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: 798
Number of RIPE addresses announced to Internet: 472091648
Equivalent to 28 /8s, 35 /16s and 140 /24s
Percentage of available RIPE address space announced: 76.1
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: 32748
Total LACNIC prefixes after maximum aggregation: 7484
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 31768
Unique aggregates announced from the LACNIC address blocks: 16728
LACNIC Region origin ASes present in the Internet Routing Table: 1454
LACNIC Prefixes per ASN: 21.85
LACNIC Region origin ASes announcing only one prefix: 429
LACNIC Region transit ASes present in the Internet Routing Table: 265
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: 83434240
Equivalent to 4 /8s, 249 /16s and 27 /24s
Percentage of available LACNIC address space announced: 55.3
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: 7861
Total AfriNIC prefixes after maximum aggregation: 1877
AfriNIC Deaggregation factor: 4.19
Prefixes being announced from the AfriNIC address blocks: 6187
Unique aggregates announced from the AfriNIC address blocks: 1890
AfriNIC Region origin ASes present in the Internet Routing Table: 448
AfriNIC Prefixes per ASN: 13.81
AfriNIC Region origin ASes announcing only one prefix: 136
AfriNIC Region transit ASes present in the Internet Routing Table: 99
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: 23021056
Equivalent to 1 /8s, 95 /16s and 70 /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 2454 9493 917 Korea Telecom (KIX)
17974 1827 516 32 PT TELEKOMUNIKASI INDONESIA
7545 1555 301 86 TPG Internet Pty Ltd
4755 1466 634 168 TATA Communications formerly
24560 1149 336 184 Bharti Airtel Ltd., Telemedia
7552 1119 1064 7 Vietel Corporation
9583 1080 80 511 Sify Limited
4808 1078 2139 298 CNCGROUP IP network: China169
9829 1037 874 51 BSNL National Internet Backbo
18101 934 116 142 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 255 bellsouth.net, inc.
4323 1979 1081 396 Time Warner Telecom
18566 1828 357 234 Covad Communications
1785 1787 681 124 PaeTec Communications, Inc.
6478 1628 307 224 AT&T Worldnet Services
20115 1536 1540 633 Charter Communications
19262 1495 4941 309 Verizon Global Networks
7018 1367 7069 895 AT&T WorldNet Services
22773 1328 2897 86 Cox Communications, Inc.
11492 1278 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 511 106 181 BILISIM TELEKOM
3292 459 1998 394 TDC Tele Danmark
20940 459 134 353 Akamai Technologies European
29049 456 33 45 AzerSat LLC.
8866 443 134 26 Bulgarian Telecommunication C
12479 429 577 6 Uni2 Autonomous System
3320 422 8152 369 Deutsche Telekom AG
8551 405 355 45 Bezeq International
702 394 1802 308 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 1372 2702 361 UniNet S.A. de C.V.
28573 1311 990 85 NET Servicos de Comunicao S.A
7303 930 470 149 Telecom Argentina Stet-France
6503 731 354 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 503 250 117 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 904 445 11 TEDATA
24863 783 147 37 LINKdotNET AS number
15475 415 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 255 bellsouth.net, inc.
4766 2454 9493 917 Korea Telecom (KIX)
23456 2422 622 1324 32-bit ASN transition
4323 1979 1081 396 Time Warner Telecom
18566 1828 357 234 Covad Communications
17974 1827 516 32 PT TELEKOMUNIKASI INDONESIA
1785 1787 681 124 PaeTec Communications, Inc.
6478 1628 307 224 AT&T Worldnet Services
7545 1555 301 86 TPG Internet Pty Ltd
20115 1536 1540 633 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 1827 1795 PT TELEKOMUNIKASI INDONESIA
1785 1787 1663 PaeTec Communications, Inc.
18566 1828 1594 Covad Communications
4323 1979 1583 Time Warner Telecom
4766 2454 1537 Korea Telecom (KIX)
7545 1555 1469 TPG Internet Pty Ltd
6478 1628 1404 AT&T Worldnet Services
10620 1477 1325 TVCABLE BOGOTA
4755 1466 1298 TATA Communications formerly
11492 1278 1263 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.
31.222.200.0/21 12327 IDEAR4BUSINESS INTERNATIONAL
31.223.128.0/19 25144 Telekom Srpske
31.223.160.0/20 28878 Signet Internet
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 /11:79 /12:225
/13:460 /14:792 /15:1392 /16:11725 /17:5784 /18:9709
/19:19305 /20:25610 /21:25836 /22:34191 /23:32890 /24:185831
/25:1087 /26:1274 /27:710 /28:164 /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 1788 1828 Covad Communications
6478 1582 1628 AT&T Worldnet Services
10620 1367 1477 TVCABLE BOGOTA
11492 1224 1278 Cable One
23456 1194 2422 32-bit ASN transition
7011 1062 1162 Citizens Utilities
1785 1052 1787 PaeTec Communications, Inc.
4323 890 1979 Time Warner Telecom
22773 846 1328 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:271 2:42 4:14 5:1 6:3 8:353
12:1989 13:1 14:458 15:15 16:3 17:8
20:10 23:7 24:1640 27:744 31:338 32:60
33:4 34:2 37:1 38:737 40:101 41:2523
42:5 44:3 46:907 47:4 49:192 50:399
52:13 55:6 56:2 57:30 58:851 59:484
60:387 61:1253 62:976 63:1937 64:3926 65:2292
66:4142 67:1877 68:1093 69:2990 70:705 71:352
72:1879 73:1 74:2350 75:309 76:342 77:868
78:693 79:463 80:1077 81:817 82:493 83:448
84:629 85:1065 86:594 87:747 88:320 89:1568
90:202 91:3741 92:514 93:1055 94:1263 95:790
96:484 97:247 98:847 99:35 101:59 103:16
106:1 107:7 108:85 109:947 110:586 111:715
112:320 113:395 114:536 115:664 116:958 117:684
118:819 119:1120 120:308 121:677 122:1624 123:1081
124:1256 125:1227 128:259 129:167 130:164 131:571
132:109 133:19 134:217 135:49 136:214 137:143
138:304 139:107 140:479 141:239 142:403 143:405
144:485 145:53 146:442 147:213 148:591 149:242
150:172 151:187 152:310 153:178 154:3 155:396
156:194 157:352 158:133 159:386 160:319 161:206
162:278 163:163 164:500 165:352 166:511 167:431
168:718 169:153 170:795 171:77 172:1 173:1546
174:551 175:371 177:119 178:911 180:843 181:15
182:442 183:205 184:266 185:1 186:1165 187:736
188:836 189:907 190:4800 192:5782 193:4849 194:3473
195:2986 196:1217 197:17 198:3582 199:3899 200:5525
201:1485 202:8360 203:8465 204:4155 205:2331 206:2724
207:2915 208:3967 209:3423 210:2741 211:1388 212:1983
213:1727 214:735 215:68 216:4830 217:1632 218:562
219:361 220:1200 221:481 222:342 223:145
End of report
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