Routing Table Report 04:00 +10GMT Fri 18 Nov, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 382218
Prefixes after maximum aggregation: 166841
Deaggregation factor: 2.29
Unique aggregates announced to Internet: 187634
Total ASes present in the Internet Routing Table: 39339
Prefixes per ASN: 9.72
Origin-only ASes present in the Internet Routing Table: 32427
Origin ASes announcing only one prefix: 15490
Transit ASes present in the Internet Routing Table: 5270
Transit-only ASes present in the Internet Routing Table: 134
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 33
Max AS path prepend of ASN (48687) 24
Prefixes from unregistered ASNs in the Routing Table: 1735
Unregistered ASNs in the Routing Table: 898
Number of 32-bit ASNs allocated by the RIRs: 1963
Number of 32-bit ASNs visible in the Routing Table: 1642
Prefixes from 32-bit ASNs in the Routing Table: 3800
Special use prefixes present in the Routing Table: 3
Prefixes being announced from unallocated address space: 85
Number of addresses announced to Internet: 2491070080
Equivalent to 148 /8s, 122 /16s and 182 /24s
Percentage of available address space announced: 67.2
Percentage of allocated address space announced: 67.2
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 91.6
Total number of prefixes smaller than registry allocations: 161491
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 95259
Total APNIC prefixes after maximum aggregation: 31166
APNIC Deaggregation factor: 3.06
Prefixes being announced from the APNIC address blocks: 91697
Unique aggregates announced from the APNIC address blocks: 38393
APNIC Region origin ASes present in the Internet Routing Table: 4613
APNIC Prefixes per ASN: 19.88
APNIC Region origin ASes announcing only one prefix: 1274
APNIC Region transit ASes present in the Internet Routing Table: 713
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 18
Number of APNIC region 32-bit ASNs visible in the Routing Table: 110
Number of APNIC addresses announced to Internet: 630263904
Equivalent to 37 /8s, 145 /16s and 16 /24s
Percentage of available APNIC address space announced: 79.9
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 131072-132095, 132096-133119
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: 145930
Total ARIN prefixes after maximum aggregation: 74498
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 118027
Unique aggregates announced from the ARIN address blocks: 48587
ARIN Region origin ASes present in the Internet Routing Table: 14751
ARIN Prefixes per ASN: 8.00
ARIN Region origin ASes announcing only one prefix: 5640
ARIN Region transit ASes present in the Internet Routing Table: 1569
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 25
Number of ARIN region 32-bit ASNs visible in the Routing Table: 13
Number of ARIN addresses announced to Internet: 803300288
Equivalent to 47 /8s, 225 /16s and 99 /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: 92194
Total RIPE prefixes after maximum aggregation: 51142
RIPE Deaggregation factor: 1.80
Prefixes being announced from the RIPE address blocks: 84483
Unique aggregates announced from the RIPE address blocks: 54342
RIPE Region origin ASes present in the Internet Routing Table: 16110
RIPE Prefixes per ASN: 5.24
RIPE Region origin ASes announcing only one prefix: 7978
RIPE Region transit ASes present in the Internet Routing Table: 2528
Average RIPE Region AS path length visible: 4.7
Max RIPE Region AS path length visible: 33
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1141
Number of RIPE addresses announced to Internet: 492074304
Equivalent to 29 /8s, 84 /16s and 117 /24s
Percentage of available RIPE address space announced: 79.3
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: 36254
Total LACNIC prefixes after maximum aggregation: 7905
LACNIC Deaggregation factor: 4.59
Prefixes being announced from the LACNIC address blocks: 35712
Unique aggregates announced from the LACNIC address blocks: 18617
LACNIC Region origin ASes present in the Internet Routing Table: 1545
LACNIC Prefixes per ASN: 23.11
LACNIC Region origin ASes announcing only one prefix: 441
LACNIC Region transit ASes present in the Internet Routing Table: 280
Average LACNIC Region AS path length visible: 4.5
Max LACNIC Region AS path length visible: 18
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 374
Number of LACNIC addresses announced to Internet: 93123712
Equivalent to 5 /8s, 140 /16s and 244 /24s
Percentage of available LACNIC address space announced: 61.7
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: 8599
Total AfriNIC prefixes after maximum aggregation: 2057
AfriNIC Deaggregation factor: 4.18
Prefixes being announced from the AfriNIC address blocks: 6655
Unique aggregates announced from the AfriNIC address blocks: 2052
AfriNIC Region origin ASes present in the Internet Routing Table: 501
AfriNIC Prefixes per ASN: 13.28
AfriNIC Region origin ASes announcing only one prefix: 157
AfriNIC Region transit ASes present in the Internet Routing Table: 107
Average AfriNIC Region AS path length visible: 4.6
Max AfriNIC Region AS path length visible: 25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 4
Number of AfriNIC addresses announced to Internet: 27768576
Equivalent to 1 /8s, 167 /16s and 183 /24s
Percentage of available AfriNIC address space announced: 41.4
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 2511 11105 968 Korea Telecom (KIX)
17974 1647 511 36 PT TELEKOMUNIKASI INDONESIA
7545 1627 303 87 TPG Internet Pty Ltd
4755 1530 378 170 TATA Communications formerly
7552 1394 1064 7 Vietel Corporation
9829 1165 989 28 BSNL National Internet Backbo
4808 1103 2095 315 CNCGROUP IP network: China169
9583 1094 80 494 Sify Limited
24560 965 343 218 Bharti Airtel Ltd., Telemedia
18101 952 119 148 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 3540 3814 219 bellsouth.net, inc.
7029 2916 1016 199 Windstream Communications Inc
18566 2093 383 177 Covad Communications
1785 1849 680 122 PaeTec Communications, Inc.
4323 1613 1077 387 Time Warner Telecom
20115 1596 1546 624 Charter Communications
22773 1499 2909 103 Cox Communications, Inc.
30036 1424 256 669 Mediacom Communications Corp
19262 1395 4728 400 Verizon Global Networks
7018 1313 7030 860 AT&T WorldNet Services
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
8402 1546 416 14 Corbina telecom
6830 646 1927 411 UPC Distribution Services
34984 600 112 188 BILISIM TELEKOM
20940 553 182 435 Akamai Technologies European
3320 512 8168 389 Deutsche Telekom AG
12479 483 596 9 Uni2 Autonomous System
3292 480 2106 408 TDC Tele Danmark
8866 462 133 26 Bulgarian Telecommunication C
8551 415 366 45 Bezeq International
31148 408 22 114 FreeNet ISP
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 1706 316 157 TVCABLE BOGOTA
28573 1500 1044 70 NET Servicos de Comunicao S.A
8151 1441 2969 346 UniNet S.A. de C.V.
7303 1237 751 172 Telecom Argentina Stet-France
27947 599 72 85 Telconet S.A
22047 580 322 17 VTR PUNTO NET S.A.
6503 557 434 68 AVANTEL, S.A.
7738 553 1050 31 Telecomunicacoes da Bahia S.A
3816 539 234 96 Empresa Nacional de Telecomun
11172 529 85 95 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
24863 777 146 36 LINKdotNET AS number
8452 685 446 12 TEDATA
15475 444 74 8 Nile Online
36992 283 415 21 Etisalat MISR
3741 281 939 230 The Internet Solution
15706 242 32 6 Sudatel Internet Exchange Aut
6713 235 519 14 Itissalat Al-MAGHRIB
29571 218 17 13 Ci Telecom Autonomous system
33776 199 13 14 Starcomms Nigeria Limited
12258 195 28 60 Vodacom Internet Company
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 3540 3814 219 bellsouth.net, inc.
7029 2916 1016 199 Windstream Communications Inc
4766 2511 11105 968 Korea Telecom (KIX)
18566 2093 383 177 Covad Communications
1785 1849 680 122 PaeTec Communications, Inc.
10620 1706 316 157 TVCABLE BOGOTA
17974 1647 511 36 PT TELEKOMUNIKASI INDONESIA
7545 1627 303 87 TPG Internet Pty Ltd
4323 1613 1077 387 Time Warner Telecom
20115 1596 1546 624 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
7029 2916 2717 Windstream Communications Inc
18566 2093 1916 Covad Communications
1785 1849 1727 PaeTec Communications, Inc.
17974 1647 1611 PT TELEKOMUNIKASI INDONESIA
10620 1706 1549 TVCABLE BOGOTA
4766 2511 1543 Korea Telecom (KIX)
7545 1627 1540 TPG Internet Pty Ltd
8402 1546 1532 Corbina telecom
28573 1500 1430 NET Servicos de Comunicao S.A
22773 1499 1396 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
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
17300 UNALLOCATED 12.45.103.0/24 7018 AT&T WorldNet Servic
17300 UNALLOCATED 12.45.110.0/24 701 UUNET Technologies,
16476 UNALLOCATED 12.46.27.0/24 7018 AT&T WorldNet Servic
32873 UNALLOCATED 12.46.100.0/23 10912 InterNAP Network Ser
Complete listing at http://thyme.rand.apnic.net/current/data-badAS
Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------
Prefix Origin AS Description
128.0.0.0/21 12654 RIPE NCC RIS Project
128.0.0.0/16 12654 RIPE NCC RIS Project
128.0.24.0/24 12654 RIPE NCC RIS Project
Complete listing at http://thyme.rand.apnic.net/current/data-dsua
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 37345 MEDALLION Communications
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 /8:19 /9:12 /10:27 /11:81 /12:236
/13:465 /14:807 /15:1424 /16:12012 /17:6082 /18:10123
/19:19995 /20:27668 /21:27835 /22:37841 /23:35410 /24:198713
/25:1155 /26:1371 /27:775 /28:158 /29:4 /30:0
/31:0 /32:5
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
7029 2548 2916 Windstream Communications Inc
6389 2182 3540 bellsouth.net, inc.
18566 2042 2093 Covad Communications
10620 1601 1706 TVCABLE BOGOTA
8402 1522 1546 Corbina telecom
30036 1384 1424 Mediacom Communications Corp
11492 1117 1154 Cable One
1785 1058 1849 PaeTec Communications, Inc.
7011 1050 1167 Citizens Utilities
22773 959 1499 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:413 2:488 4:15 5:1 6:3 8:354
12:1964 13:1 14:553 15:11 16:3 17:7
20:9 23:63 24:1687 27:1034 31:699 32:65
33:2 34:2 36:4 38:762 39:1 40:109
41:2667 42:61 43:1 44:3 46:1047 47:3
49:294 50:454 52:13 55:6 56:2 57:48
58:921 59:491 60:360 61:1140 62:1096 63:1963
64:4075 65:2301 66:4333 67:2014 68:1168 69:3144
70:904 71:389 72:1816 74:2640 75:429 76:320
77:891 78:888 79:490 80:1131 81:838 82:512
83:518 84:621 85:1156 86:405 87:908 88:355
89:1568 90:235 91:4265 92:539 93:1432 94:1306
95:1101 96:430 97:285 98:796 99:37 101:240
103:482 106:1 107:93 108:81 109:1186 110:669
111:804 112:361 113:496 114:587 115:715 116:881
117:721 118:891 119:1269 120:349 121:671 122:1574
123:1027 124:1354 125:1352 128:247 129:184 130:176
131:632 132:155 133:21 134:229 135:54 136:211
137:146 138:288 139:122 140:493 141:253 142:389
143:414 144:498 145:65 146:474 147:220 148:625
149:263 150:164 151:194 152:448 153:172 154:7
155:389 156:208 157:358 158:158 159:494 160:330
161:215 162:374 163:175 164:512 165:368 166:539
167:444 168:824 169:145 170:879 171:87 172:4
173:1745 174:591 175:433 176:301 177:390 178:1115
180:1144 181:39 182:656 183:239 184:395 185:1
186:1414 187:779 188:954 189:1152 190:5200 192:5936
193:5051 194:3549 195:3103 196:1274 197:166 198:3623
199:4217 200:5522 201:1703 202:8550 203:8554 204:4300
205:2380 206:2595 207:2812 208:4029 209:3577 210:2739
211:1467 212:1995 213:1808 214:822 215:97 216:4911
217:1583 218:573 219:337 220:1257 221:519 222:326
223:279
End of report
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