Routing Table Report 04:00 +10GMT Mon 16 May, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 356983
Prefixes after maximum aggregation: 161659
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 176160
Total ASes present in the Internet Routing Table: 37556
Prefixes per ASN: 9.51
Origin-only ASes present in the Internet Routing Table: 31379
Origin ASes announcing only one prefix: 15086
Transit ASes present in the Internet Routing Table: 5106
Transit-only ASes present in the Internet Routing Table: 136
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 36
Max AS path prepend of ASN (48687) 24
Prefixes from unregistered ASNs in the Routing Table: 635
Unregistered ASNs in the Routing Table: 325
Number of 32-bit ASNs allocated by the RIRs: 1357
Number of 32-bit ASNs visible in the Routing Table: 1071
Prefixes from 32-bit ASNs in the Routing Table: 2413
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 150
Number of addresses announced to Internet: 2425796032
Equivalent to 144 /8s, 150 /16s and 181 /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: 90.8
Total number of prefixes smaller than registry allocations: 148343
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 89390
Total APNIC prefixes after maximum aggregation: 29989
APNIC Deaggregation factor: 2.98
Prefixes being announced from the APNIC address blocks: 85738
Unique aggregates announced from the APNIC address blocks: 36627
APNIC Region origin ASes present in the Internet Routing Table: 4444
APNIC Prefixes per ASN: 19.29
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: 18
Number of APNIC region 32-bit ASNs visible in the Routing Table: 47
Number of APNIC addresses announced to Internet: 614507552
Equivalent to 36 /8s, 160 /16s and 164 /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: 140164
Total ARIN prefixes after maximum aggregation: 71446
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 112425
Unique aggregates announced from the ARIN address blocks: 45488
ARIN Region origin ASes present in the Internet Routing Table: 14362
ARIN Prefixes per ASN: 7.83
ARIN Region origin ASes announcing only one prefix: 5486
ARIN Region transit ASes present in the Internet Routing Table: 1501
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: 800043264
Equivalent to 47 /8s, 175 /16s and 177 /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: 84248
Total RIPE prefixes after maximum aggregation: 48144
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 77742
Unique aggregates announced from the RIPE address blocks: 51305
RIPE Region origin ASes present in the Internet Routing Table: 15597
RIPE Prefixes per ASN: 4.98
RIPE Region origin ASes announcing only one prefix: 7807
RIPE Region transit ASes present in the Internet Routing Table: 2464
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: 794
Number of RIPE addresses announced to Internet: 468823040
Equivalent to 27 /8s, 241 /16s and 172 /24s
Percentage of available RIPE address space announced: 75.5
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: 32743
Total LACNIC prefixes after maximum aggregation: 7490
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31770
Unique aggregates announced from the LACNIC address blocks: 16689
LACNIC Region origin ASes present in the Internet Routing Table: 1449
LACNIC Prefixes per ASN: 21.93
LACNIC Region origin ASes announcing only one prefix: 427
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: 213
Number of LACNIC addresses announced to Internet: 83393792
Equivalent to 4 /8s, 248 /16s and 125 /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: 7807
Total AfriNIC prefixes after maximum aggregation: 1860
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 6175
Unique aggregates announced from the AfriNIC address blocks: 1914
AfriNIC Region origin ASes present in the Internet Routing Table: 446
AfriNIC Prefixes per ASN: 13.85
AfriNIC Region origin ASes announcing only one prefix: 137
AfriNIC Region transit ASes present in the Internet Routing Table: 97
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: 23102208
Equivalent to 1 /8s, 96 /16s and 131 /24s
Percentage of available AfriNIC address space announced: 34.4
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 2452 9493 916 Korea Telecom (KIX)
17974 1823 516 32 PT TELEKOMUNIKASI INDONESIA
7545 1548 301 86 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
9583 1079 80 510 Sify Limited
4808 1077 2138 299 CNCGROUP IP network: China169
9829 1034 872 54 BSNL National Internet Backbo
17488 936 165 103 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 3647 3822 255 bellsouth.net, inc.
4323 1981 1081 397 Time Warner Telecom
18566 1822 357 232 Covad Communications
1785 1776 681 124 PaeTec Communications, Inc.
6478 1679 314 51 AT&T Worldnet Services
20115 1536 1539 632 Charter Communications
19262 1499 4949 299 Verizon Global Networks
7018 1359 6911 891 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 447 131 342 Akamai Technologies European
8866 442 134 26 Bulgarian Telecommunication C
29049 442 32 44 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 1368 2702 360 UniNet S.A. de C.V.
28573 1313 990 86 NET Servicos de Comunicao S.A
7303 930 470 151 Telecom Argentina Stet-France
6503 731 354 71 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 888 445 11 TEDATA
24863 782 147 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 205 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 3647 3822 255 bellsouth.net, inc.
4766 2452 9493 916 Korea Telecom (KIX)
23456 2413 683 1318 32-bit ASN transition
4323 1981 1081 397 Time Warner Telecom
17974 1823 516 32 PT TELEKOMUNIKASI INDONESIA
18566 1822 357 232 Covad Communications
1785 1776 681 124 PaeTec Communications, Inc.
6478 1679 314 51 AT&T Worldnet Services
7545 1548 301 86 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 1823 1791 PT TELEKOMUNIKASI INDONESIA
1785 1776 1652 PaeTec Communications, Inc.
6478 1679 1628 AT&T Worldnet Services
18566 1822 1590 Covad Communications
4323 1981 1584 Time Warner Telecom
4766 2452 1536 Korea Telecom (KIX)
7545 1548 1462 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
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
45.127.0.0/16 13767 NetworkTwo Communications Gro
62.61.220.0/24 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 /10:28 /11:78 /12:223
/13:459 /14:791 /15:1390 /16:11722 /17:5774 /18:9711
/19:19319 /20:25578 /21:25828 /22:34138 /23:32893 /24:185767
/25:1093 /26:1273 /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 2247 3647 bellsouth.net, inc.
18566 1784 1822 Covad Communications
6478 1633 1679 AT&T Worldnet Services
10620 1367 1477 TVCABLE BOGOTA
11492 1225 1279 Cable One
23456 1195 2413 32-bit ASN transition
7011 1062 1162 Citizens Utilities
1785 1050 1776 PaeTec Communications, Inc.
4323 891 1981 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)
----------------------------------------------
1:268 2:50 4:14 5:1 6:3 8:352
12:1987 13:1 14:456 15:15 16:3 17:8
20:10 23:7 24:1640 27:743 31:335 32:60
33:4 34:2 37:1 38:730 40:101 41:2506
42:5 44:3 46:903 47:4 49:177 50:401
52:13 55:5 56:2 57:30 58:851 59:484
60:387 61:1256 62:976 63:1925 64:3925 65:2297
66:4139 67:1877 68:1092 69:2988 70:705 71:352
72:1884 73:1 74:2343 75:309 76:342 77:870
78:690 79:462 80:1097 81:817 82:491 83:449
84:625 85:1070 86:598 87:747 88:320 89:1565
90:202 91:3737 92:513 93:1054 94:1251 95:803
96:484 97:246 98:842 99:35 101:59 103:12
106:1 107:6 108:85 109:945 110:588 111:713
112:319 113:398 114:530 115:664 116:958 117:683
118:819 119:1132 120:309 121:677 122:1622 123:1080
124:1257 125:1223 128:259 129:167 130:163 131:567
132:110 133:19 134:218 135:49 136:214 137:143
138:304 139:113 140:480 141:239 142:401 143:400
144:489 145:53 146:441 147:207 148:591 149:242
150:172 151:187 152:309 153:178 154:3 155:395
156:194 157:352 158:131 159:387 160:318 161:207
162:279 163:163 164:499 165:352 166:514 167:431
168:725 169:153 170:794 171:77 172:1 173:1561
174:551 175:370 177:112 178:911 180:842 181:15
182:441 183:205 184:262 185:1 186:1170 187:753
188:830 189:908 190:4804 192:5794 193:4844 194:3478
195:2977 196:1206 197:17 198:3566 199:3893 200:5529
201:1492 202:8355 203:8457 204:4154 205:2326 206:2721
207:2910 208:3969 209:3420 210:2738 211:1386 212:1970
213:1735 214:731 215:68 216:4842 217:1633 218:564
219:371 220:1203 221:483 222:342 223:146
End of report
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