Routing Table Report 04:00 +10GMT Sun 29 May, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 358560
Prefixes after maximum aggregation: 162104
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 176485
Total ASes present in the Internet Routing Table: 37690
Prefixes per ASN: 9.51
Origin-only ASes present in the Internet Routing Table: 31486
Origin ASes announcing only one prefix: 15125
Transit ASes present in the Internet Routing Table: 5099
Transit-only ASes present in the Internet Routing Table: 138
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: 710
Unregistered ASNs in the Routing Table: 376
Number of 32-bit ASNs allocated by the RIRs: 1392
Number of 32-bit ASNs visible in the Routing Table: 1105
Prefixes from 32-bit ASNs in the Routing Table: 2538
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 168
Number of addresses announced to Internet: 2439881920
Equivalent to 145 /8s, 109 /16s and 164 /24s
Percentage of available address space announced: 65.8
Percentage of allocated address space announced: 65.8
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 91.0
Total number of prefixes smaller than registry allocations: 149371
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 89219
Total APNIC prefixes after maximum aggregation: 30035
APNIC Deaggregation factor: 2.97
Prefixes being announced from the APNIC address blocks: 85653
Unique aggregates announced from the APNIC address blocks: 35702
APNIC Region origin ASes present in the Internet Routing Table: 4465
APNIC Prefixes per ASN: 19.18
APNIC Region origin ASes announcing only one prefix: 1253
APNIC Region transit ASes present in the Internet Routing Table: 701
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: 48
Number of APNIC addresses announced to Internet: 619290912
Equivalent to 36 /8s, 233 /16s and 161 /24s
Percentage of available APNIC address space announced: 78.5
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: 140441
Total ARIN prefixes after maximum aggregation: 71383
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 112719
Unique aggregates announced from the ARIN address blocks: 45895
ARIN Region origin ASes present in the Internet Routing Table: 14396
ARIN Prefixes per ASN: 7.83
ARIN Region origin ASes announcing only one prefix: 5492
ARIN Region transit ASes present in the Internet Routing Table: 1504
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: 801928704
Equivalent to 47 /8s, 204 /16s and 118 /24s
Percentage of available ARIN address space announced: 63.7
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: 85100
Total RIPE prefixes after maximum aggregation: 48418
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 78492
Unique aggregates announced from the RIPE address blocks: 51930
RIPE Region origin ASes present in the Internet Routing Table: 15622
RIPE Prefixes per ASN: 5.02
RIPE Region origin ASes announcing only one prefix: 7811
RIPE Region transit ASes present in the Internet Routing Table: 2457
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 36
Number of RIPE region 32-bit ASNs visible in the Routing Table: 816
Number of RIPE addresses announced to Internet: 474190336
Equivalent to 28 /8s, 67 /16s and 146 /24s
Percentage of available RIPE address space announced: 76.4
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: 33025
Total LACNIC prefixes after maximum aggregation: 7541
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 32100
Unique aggregates announced from the LACNIC address blocks: 16845
LACNIC Region origin ASes present in the Internet Routing Table: 1460
LACNIC Prefixes per ASN: 21.99
LACNIC Region origin ASes announcing only one prefix: 429
LACNIC Region transit ASes present in the Internet Routing Table: 267
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 23
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 224
Number of LACNIC addresses announced to Internet: 84017408
Equivalent to 5 /8s, 2 /16s and 1 /24s
Percentage of available LACNIC address space announced: 55.6
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: 8013
Total AfriNIC prefixes after maximum aggregation: 1897
AfriNIC Deaggregation factor: 4.22
Prefixes being announced from the AfriNIC address blocks: 6338
Unique aggregates announced from the AfriNIC address blocks: 1925
AfriNIC Region origin ASes present in the Internet Routing Table: 454
AfriNIC Prefixes per ASN: 13.96
AfriNIC Region origin ASes announcing only one prefix: 140
AfriNIC Region transit ASes present in the Internet Routing Table: 103
Average AfriNIC Region AS path length visible: 5.4
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: 23190784
Equivalent to 1 /8s, 97 /16s and 221 /24s
Percentage of available AfriNIC address space announced: 34.6
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 2461 9500 922 Korea Telecom (KIX)
17974 1846 516 32 PT TELEKOMUNIKASI INDONESIA
7545 1536 301 85 TPG Internet Pty Ltd
4755 1473 635 169 TATA Communications formerly
24560 1155 337 187 Bharti Airtel Ltd., Telemedia
7552 1140 1064 7 Vietel Corporation
4808 1081 2141 302 CNCGROUP IP network: China169
9583 1076 79 507 Sify Limited
9829 1035 875 51 BSNL National Internet Backbo
18101 930 116 140 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 3641 3822 254 bellsouth.net, inc.
4323 1972 1081 399 Time Warner Telecom
18566 1875 355 271 Covad Communications
1785 1789 681 123 PaeTec Communications, Inc.
6478 1704 317 50 AT&T Worldnet Services
20115 1535 1540 633 Charter Communications
19262 1490 4935 308 Verizon Global Networks
7018 1363 7068 887 AT&T WorldNet Services
22773 1335 2897 88 Cox Communications, Inc.
11492 1280 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 516 1780 319 UPC Distribution Services
34984 516 106 179 BILISIM TELEKOM
3292 462 2078 397 TDC Tele Danmark
20940 455 133 350 Akamai Technologies European
29049 451 33 48 AzerSat LLC.
8866 445 134 26 Bulgarian Telecommunication C
12479 429 577 6 Uni2 Autonomous System
3320 426 8152 371 Deutsche Telekom AG
8551 406 355 45 Bezeq International
3301 398 1839 347 TeliaNet Sweden
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 1492 274 156 TVCABLE BOGOTA
8151 1376 2710 364 UniNet S.A. de C.V.
28573 1319 991 88 NET Servicos de Comunicao S.A
7303 958 504 152 Telecom Argentina Stet-France
6503 731 354 73 AVANTEL, S.A.
14420 670 54 91 CORPORACION NACIONAL DE TELEC
22047 565 310 15 VTR PUNTO NET S.A.
3816 522 227 101 Empresa Nacional de Telecomun
13489 514 262 123 Orbitel S.A. E.S.P.
11172 495 84 84 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 871 445 11 TEDATA
24863 786 147 37 LINKdotNET AS number
15475 543 90 8 Nile Online
36992 290 315 19 Etisalat MISR
3741 263 937 226 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
33776 218 12 11 Starcomms Nigeria Limited
24835 208 78 10 RAYA Telecom - Egypt
29571 163 19 12 Ci Telecom Autonomous system
16637 143 441 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 3641 3822 254 bellsouth.net, inc.
23456 2538 632 1368 32-bit ASN transition
4766 2461 9500 922 Korea Telecom (KIX)
4323 1972 1081 399 Time Warner Telecom
18566 1875 355 271 Covad Communications
17974 1846 516 32 PT TELEKOMUNIKASI INDONESIA
1785 1789 681 123 PaeTec Communications, Inc.
6478 1704 317 50 AT&T Worldnet Services
7545 1536 301 85 TPG Internet Pty Ltd
20115 1535 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 1846 1814 PT TELEKOMUNIKASI INDONESIA
1785 1789 1666 PaeTec Communications, Inc.
6478 1704 1654 AT&T Worldnet Services
18566 1875 1604 Covad Communications
4323 1972 1573 Time Warner Telecom
4766 2461 1539 Korea Telecom (KIX)
7545 1536 1451 TPG Internet Pty Ltd
10620 1492 1336 TVCABLE BOGOTA
4755 1473 1304 TATA Communications formerly
11492 1280 1265 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.
41.190.32.0/23 31856 CABSAS
41.190.34.0/23 31856 CABSAS
41.190.36.0/23 31856 CABSAS
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 /8:21 /9:12 /10:28 /11:79 /12:228
/13:460 /14:794 /15:1395 /16:11761 /17:5837 /18:9759
/19:19318 /20:25717 /21:25922 /22:34161 /23:33139 /24:186678
/25:1089 /26:1271 /27:713 /28:162 /29:8 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2242 3641 bellsouth.net, inc.
18566 1838 1875 Covad Communications
6478 1658 1704 AT&T Worldnet Services
10620 1382 1492 TVCABLE BOGOTA
23456 1227 2538 32-bit ASN transition
11492 1226 1280 Cable One
7011 1061 1160 Citizens Utilities
1785 1051 1789 PaeTec Communications, Inc.
4323 885 1972 Time Warner Telecom
22773 850 1335 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:279 2:46 4:16 5:1 6:3 8:353
12:1980 13:1 14:464 15:15 16:3 17:8
20:10 23:7 24:1645 27:773 31:352 32:60
33:4 34:2 37:1 38:737 40:101 41:2521
42:5 44:3 46:930 47:3 49:199 50:422
52:13 54:2 55:5 56:2 57:29 58:844
59:479 60:387 61:1234 62:1049 63:1937 64:3955
65:2293 66:4145 67:1874 68:1085 69:2992 70:706
71:352 72:1890 73:1 74:2358 75:302 76:340
77:870 78:703 79:464 80:1099 81:823 82:488
83:442 84:677 85:1061 86:593 87:753 88:330
89:1534 90:203 91:3785 92:517 93:1051 94:1284
95:804 96:506 97:250 98:852 99:35 101:57
103:29 106:1 107:7 108:85 109:947 110:602
111:708 112:304 113:399 114:535 115:668 116:948
117:692 118:828 119:1139 120:307 121:670 122:1621
123:999 124:1264 125:1229 128:262 129:173 130:164
131:571 132:109 133:19 134:213 135:48 136:212
137:143 138:300 139:111 140:482 141:239 142:401
143:399 144:485 145:54 146:447 147:209 148:591
149:242 150:168 151:185 152:325 153:178 154:3
155:397 156:194 157:353 158:138 159:389 160:314
161:206 162:282 163:164 164:499 165:355 166:515
167:428 168:732 169:155 170:800 171:77 172:1
173:1559 174:551 175:370 176:129 177:155 178:980
180:849 181:17 182:453 183:208 184:285 185:1
186:1176 187:777 188:843 189:906 190:4820 192:5841
193:4898 194:3509 195:3002 196:1219 197:19 198:3572
199:3905 200:5542 201:1484 202:8319 203:8394 204:4173
205:2323 206:2677 207:2874 208:3968 209:3471 210:2736
211:1395 212:1987 213:1735 214:731 215:72 216:4901
217:1630 218:564 219:363 220:1201 221:490 222:342
223:149
End of report
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