Routing Table Report 04:00 +10GMT Mon 23 May, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 357709
Prefixes after maximum aggregation: 162005
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 176781
Total ASes present in the Internet Routing Table: 37618
Prefixes per ASN: 9.51
Origin-only ASes present in the Internet Routing Table: 31435
Origin ASes announcing only one prefix: 15084
Transit ASes present in the Internet Routing Table: 5093
Transit-only ASes present in the Internet Routing Table: 136
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: 655
Unregistered ASNs in the Routing Table: 340
Number of 32-bit ASNs allocated by the RIRs: 1369
Number of 32-bit ASNs visible in the Routing Table: 1090
Prefixes from 32-bit ASNs in the Routing Table: 2468
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 162
Number of addresses announced to Internet: 2433069760
Equivalent to 145 /8s, 5 /16s and 178 /24s
Percentage of available address space announced: 65.6
Percentage of allocated address space announced: 65.6
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.9
Total number of prefixes smaller than registry allocations: 148696
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 89436
Total APNIC prefixes after maximum aggregation: 30054
APNIC Deaggregation factor: 2.98
Prefixes being announced from the APNIC address blocks: 85808
Unique aggregates announced from the APNIC address blocks: 36693
APNIC Region origin ASes present in the Internet Routing Table: 4457
APNIC Prefixes per ASN: 19.25
APNIC Region origin ASes announcing only one prefix: 1235
APNIC Region transit ASes present in the Internet Routing Table: 704
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 21
Number of APNIC region 32-bit ASNs visible in the Routing Table: 47
Number of APNIC addresses announced to Internet: 615495456
Equivalent to 36 /8s, 175 /16s and 183 /24s
Percentage of available APNIC address space announced: 78.1
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: 140419
Total ARIN prefixes after maximum aggregation: 71543
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 112633
Unique aggregates announced from the ARIN address blocks: 45627
ARIN Region origin ASes present in the Internet Routing Table: 14373
ARIN Prefixes per ASN: 7.84
ARIN Region origin ASes announcing only one prefix: 5474
ARIN Region transit ASes present in the Internet Routing Table: 1503
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: 801705728
Equivalent to 47 /8s, 201 /16s and 15 /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: 84536
Total RIPE prefixes after maximum aggregation: 48256
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 78026
Unique aggregates announced from the RIPE address blocks: 51644
RIPE Region origin ASes present in the Internet Routing Table: 15615
RIPE Prefixes per ASN: 5.00
RIPE Region origin ASes announcing only one prefix: 7813
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: 807
Number of RIPE addresses announced to Internet: 472924160
Equivalent to 28 /8s, 48 /16s and 64 /24s
Percentage of available RIPE address space announced: 76.2
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: 32835
Total LACNIC prefixes after maximum aggregation: 7492
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 31874
Unique aggregates announced from the LACNIC address blocks: 16764
LACNIC Region origin ASes present in the Internet Routing Table: 1453
LACNIC Prefixes per ASN: 21.94
LACNIC Region origin ASes announcing only one prefix: 430
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: 220
Number of LACNIC addresses announced to Internet: 83492608
Equivalent to 4 /8s, 249 /16s and 255 /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: 7801
Total AfriNIC prefixes after maximum aggregation: 1870
AfriNIC Deaggregation factor: 4.17
Prefixes being announced from the AfriNIC address blocks: 6150
Unique aggregates announced from the AfriNIC address blocks: 1900
AfriNIC Region origin ASes present in the Internet Routing Table: 443
AfriNIC Prefixes per ASN: 13.88
AfriNIC Region origin ASes announcing only one prefix: 132
AfriNIC Region transit ASes present in the Internet Routing Table: 100
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: 23202560
Equivalent to 1 /8s, 98 /16s and 11 /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 2457 9494 918 Korea Telecom (KIX)
17974 1822 516 32 PT TELEKOMUNIKASI INDONESIA
7545 1555 301 86 TPG Internet Pty Ltd
4755 1473 635 169 TATA Communications formerly
24560 1151 336 184 Bharti Airtel Ltd., Telemedia
7552 1138 1064 7 Vietel Corporation
9583 1082 81 511 Sify Limited
4808 1080 2141 298 CNCGROUP IP network: China169
9829 1038 874 51 BSNL National Internet Backbo
18101 933 116 141 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 3644 3822 260 bellsouth.net, inc.
4323 1977 1081 399 Time Warner Telecom
18566 1860 354 267 Covad Communications
1785 1786 681 123 PaeTec Communications, Inc.
6478 1694 315 54 AT&T Worldnet Services
20115 1537 1540 634 Charter Communications
19262 1496 4943 300 Verizon Global Networks
7018 1365 7069 890 AT&T WorldNet Services
22773 1331 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 520 1780 321 UPC Distribution Services
34984 514 106 182 BILISIM TELEKOM
3292 460 2062 395 TDC Tele Danmark
20940 457 134 351 Akamai Technologies European
29049 453 33 44 AzerSat LLC.
8866 444 134 26 Bulgarian Telecommunication C
12479 431 577 6 Uni2 Autonomous System
3320 419 8149 365 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 1481 273 154 TVCABLE BOGOTA
8151 1373 2704 362 UniNet S.A. de C.V.
28573 1313 991 86 NET Servicos de Comunicao S.A
7303 924 470 150 Telecom Argentina Stet-France
6503 732 354 73 AVANTEL, S.A.
14420 670 54 91 CORPORACION NACIONAL DE TELEC
22047 563 310 15 VTR PUNTO NET S.A.
3816 522 227 101 Empresa Nacional de Telecomun
13489 514 258 120 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 891 445 11 TEDATA
24863 787 147 37 LINKdotNET AS number
15475 415 90 8 Nile Online
36992 287 331 17 Etisalat MISR
3741 268 985 228 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
24835 208 78 10 RAYA Telecom - Egypt
33776 185 11 12 Starcomms Nigeria Limited
29571 163 19 12 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 3644 3822 260 bellsouth.net, inc.
23456 2468 626 1348 32-bit ASN transition
4766 2457 9494 918 Korea Telecom (KIX)
4323 1977 1081 399 Time Warner Telecom
18566 1860 354 267 Covad Communications
17974 1822 516 32 PT TELEKOMUNIKASI INDONESIA
1785 1786 681 123 PaeTec Communications, Inc.
6478 1694 315 54 AT&T Worldnet Services
7545 1555 301 86 TPG Internet Pty Ltd
20115 1537 1540 634 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 1822 1790 PT TELEKOMUNIKASI INDONESIA
1785 1786 1663 PaeTec Communications, Inc.
6478 1694 1640 AT&T Worldnet Services
18566 1860 1593 Covad Communications
4323 1977 1578 Time Warner Telecom
4766 2457 1539 Korea Telecom (KIX)
7545 1555 1469 TPG Internet Pty Ltd
10620 1481 1327 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 /8:20 /9:12 /10:28 /11:79 /12:226
/13:461 /14:793 /15:1393 /16:11768 /17:5814 /18:9750
/19:19371 /20:25649 /21:25825 /22:34228 /23:33012 /24:186034
/25:1083 /26:1273 /27:712 /28:162 /29:8 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2244 3644 bellsouth.net, inc.
18566 1824 1860 Covad Communications
6478 1648 1694 AT&T Worldnet Services
10620 1371 1481 TVCABLE BOGOTA
11492 1226 1280 Cable One
23456 1211 2468 32-bit ASN transition
7011 1060 1159 Citizens Utilities
1785 1051 1786 PaeTec Communications, Inc.
4323 887 1977 Time Warner Telecom
22773 847 1331 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:277 2:40 4:16 5:1 6:3 8:352
12:1985 13:1 14:457 15:15 16:3 17:8
20:10 23:7 24:1635 27:755 31:346 32:60
33:4 34:2 37:1 38:739 40:101 41:2481
42:5 44:3 46:922 47:4 49:197 50:416
52:13 54:1 55:3 56:2 57:30 58:843
59:481 60:387 61:1236 62:962 63:1935 64:3945
65:2292 66:4145 67:1845 68:1092 69:2985 70:704
71:352 72:1883 73:1 74:2349 75:303 76:340
77:870 78:706 79:478 80:1095 81:818 82:492
83:439 84:628 85:1071 86:594 87:749 88:329
89:1556 90:204 91:3771 92:516 93:1053 94:1283
95:811 96:504 97:249 98:838 99:35 101:59
103:13 106:1 107:7 108:85 109:949 110:601
111:718 112:303 113:400 114:536 115:667 116:954
117:695 118:820 119:1139 120:308 121:672 122:1627
123:1001 124:1265 125:1229 128:262 129:176 130:163
131:570 132:109 133:19 134:213 135:48 136:215
137:144 138:300 139:112 140:484 141:239 142:403
143:401 144:482 145:54 146:440 147:210 148:588
149:242 150:171 151:186 152:306 153:178 154:3
155:396 156:194 157:352 158:135 159:387 160:319
161:207 162:282 163:163 164:501 165:354 166:515
167:433 168:728 169:153 170:793 171:77 172:1
173:1560 174:552 175:375 177:131 178:918 180:842
181:17 182:447 183:207 184:273 185:1 186:1163
187:742 188:841 189:897 190:4816 192:5788 193:4853
194:3480 195:2986 196:1203 197:17 198:3578 199:3906
200:5536 201:1486 202:8370 203:8421 204:4161 205:2323
206:2728 207:2916 208:3968 209:3442 210:2736 211:1392
212:1975 213:1730 214:731 215:71 216:4901 217:1637
218:562 219:362 220:1201 221:483 222:340 223:148
End of report
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