Routing Table Report 04:00 +10GMT Mon 07 Nov, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 381024
Prefixes after maximum aggregation: 166574
Deaggregation factor: 2.29
Unique aggregates announced to Internet: 187197
Total ASes present in the Internet Routing Table: 39227
Prefixes per ASN: 9.71
Origin-only ASes present in the Internet Routing Table: 32362
Origin ASes announcing only one prefix: 15479
Transit ASes present in the Internet Routing Table: 5270
Transit-only ASes present in the Internet Routing Table: 133
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: 1620
Unregistered ASNs in the Routing Table: 856
Number of 32-bit ASNs allocated by the RIRs: 1933
Number of 32-bit ASNs visible in the Routing Table: 1595
Prefixes from 32-bit ASNs in the Routing Table: 3686
Special use prefixes present in the Routing Table: 3
Prefixes being announced from unallocated address space: 86
Number of addresses announced to Internet: 2490075968
Equivalent to 148 /8s, 107 /16s and 139 /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: 160847
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 94785
Total APNIC prefixes after maximum aggregation: 31060
APNIC Deaggregation factor: 3.05
Prefixes being announced from the APNIC address blocks: 91239
Unique aggregates announced from the APNIC address blocks: 38285
APNIC Region origin ASes present in the Internet Routing Table: 4602
APNIC Prefixes per ASN: 19.83
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: 19
Number of APNIC region 32-bit ASNs visible in the Routing Table: 102
Number of APNIC addresses announced to Internet: 629656672
Equivalent to 37 /8s, 135 /16s and 204 /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: 145917
Total ARIN prefixes after maximum aggregation: 74457
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 117857
Unique aggregates announced from the ARIN address blocks: 48372
ARIN Region origin ASes present in the Internet Routing Table: 14737
ARIN Prefixes per ASN: 8.00
ARIN Region origin ASes announcing only one prefix: 5638
ARIN Region transit ASes present in the Internet Routing Table: 1561
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: 12
Number of ARIN addresses announced to Internet: 804700928
Equivalent to 47 /8s, 246 /16s and 195 /24s
Percentage of available ARIN address space announced: 64.0
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: 91935
Total RIPE prefixes after maximum aggregation: 51039
RIPE Deaggregation factor: 1.80
Prefixes being announced from the RIPE address blocks: 84390
Unique aggregates announced from the RIPE address blocks: 54494
RIPE Region origin ASes present in the Internet Routing Table: 16082
RIPE Prefixes per ASN: 5.25
RIPE Region origin ASes announcing only one prefix: 7966
RIPE Region transit ASes present in the Internet Routing Table: 2529
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: 1108
Number of RIPE addresses announced to Internet: 491702976
Equivalent to 29 /8s, 78 /16s and 202 /24s
Percentage of available RIPE address space announced: 79.2
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: 35932
Total LACNIC prefixes after maximum aggregation: 7915
LACNIC Deaggregation factor: 4.54
Prefixes being announced from the LACNIC address blocks: 35359
Unique aggregates announced from the LACNIC address blocks: 18555
LACNIC Region origin ASes present in the Internet Routing Table: 1539
LACNIC Prefixes per ASN: 22.98
LACNIC Region origin ASes announcing only one prefix: 444
LACNIC Region transit ASes present in the Internet Routing Table: 285
Average LACNIC Region AS path length visible: 4.5
Max LACNIC Region AS path length visible: 19
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 369
Number of LACNIC addresses announced to Internet: 92909696
Equivalent to 5 /8s, 137 /16s and 176 /24s
Percentage of available LACNIC address space announced: 61.5
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: 8586
Total AfriNIC prefixes after maximum aggregation: 2027
AfriNIC Deaggregation factor: 4.24
Prefixes being announced from the AfriNIC address blocks: 6653
Unique aggregates announced from the AfriNIC address blocks: 1998
AfriNIC Region origin ASes present in the Internet Routing Table: 495
AfriNIC Prefixes per ASN: 13.44
AfriNIC Region origin ASes announcing only one prefix: 157
AfriNIC Region transit ASes present in the Internet Routing Table: 109
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: 27605248
Equivalent to 1 /8s, 165 /16s and 57 /24s
Percentage of available AfriNIC address space announced: 41.1
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 2516 11129 974 Korea Telecom (KIX)
17974 1626 511 36 PT TELEKOMUNIKASI INDONESIA
7545 1617 303 87 TPG Internet Pty Ltd
4755 1548 637 174 TATA Communications formerly
7552 1394 1064 7 Vietel Corporation
9829 1166 989 28 BSNL National Internet Backbo
9583 1098 81 502 Sify Limited
4808 1090 2103 312 CNCGROUP IP network: China169
24560 964 343 218 Bharti Airtel Ltd., Telemedia
18101 953 135 149 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 3548 3815 221 bellsouth.net, inc.
7029 2338 1016 198 Windstream Communications Inc
18566 2094 383 177 Covad Communications
1785 1844 680 122 PaeTec Communications, Inc.
4323 1621 1077 387 Time Warner Telecom
20115 1596 1547 621 Charter Communications
22773 1489 2909 103 Cox Communications, Inc.
30036 1405 254 672 Mediacom Communications Corp
19262 1395 4728 400 Verizon Global Networks
7018 1315 7029 861 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 1577 416 14 Corbina telecom
6830 650 1927 414 UPC Distribution Services
34984 596 110 184 BILISIM TELEKOM
20940 550 182 432 Akamai Technologies European
12479 547 628 51 Uni2 Autonomous System
3320 507 8169 387 Deutsche Telekom AG
3292 481 2074 406 TDC Tele Danmark
8866 462 133 26 Bulgarian Telecommunication C
31148 406 22 114 FreeNet ISP
8551 402 354 43 Bezeq International
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 1699 314 156 TVCABLE BOGOTA
28573 1482 1043 79 NET Servicos de Comunicao S.A
8151 1425 2937 348 UniNet S.A. de C.V.
7303 1236 751 171 Telecom Argentina Stet-France
27947 591 72 84 Telconet S.A
22047 580 322 17 VTR PUNTO NET S.A.
6503 565 434 68 AVANTEL, S.A.
7738 553 1050 31 Telecomunicacoes da Bahia S.A
3816 537 233 95 Empresa Nacional de Telecomun
11172 526 86 97 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 801 146 36 LINKdotNET AS number
8452 652 446 12 TEDATA
15475 444 74 8 Nile Online
36992 285 415 20 Etisalat MISR
3741 281 939 230 The Internet Solution
15706 240 32 6 Sudatel Internet Exchange Aut
33776 239 13 8 Starcomms Nigeria Limited
6713 235 519 14 Itissalat Al-MAGHRIB
29571 218 17 13 Ci Telecom Autonomous system
12258 196 28 57 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 3548 3815 221 bellsouth.net, inc.
4766 2516 11129 974 Korea Telecom (KIX)
7029 2338 1016 198 Windstream Communications Inc
18566 2094 383 177 Covad Communications
1785 1844 680 122 PaeTec Communications, Inc.
10620 1699 314 156 TVCABLE BOGOTA
17974 1626 511 36 PT TELEKOMUNIKASI INDONESIA
4323 1621 1077 387 Time Warner Telecom
7545 1617 303 87 TPG Internet Pty Ltd
20115 1596 1547 621 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 2338 2140 Windstream Communications Inc
18566 2094 1917 Covad Communications
1785 1844 1722 PaeTec Communications, Inc.
17974 1626 1590 PT TELEKOMUNIKASI INDONESIA
8402 1577 1563 Corbina telecom
10620 1699 1543 TVCABLE BOGOTA
4766 2516 1542 Korea Telecom (KIX)
7545 1617 1530 TPG Internet Pty Ltd
28573 1482 1403 NET Servicos de Comunicao S.A
7552 1394 1387 Vietel Corporation
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 /14:809 /15:1422 /16:12024 /17:6054 /18:10089
/19:19943 /20:27560 /21:27693 /22:37191 /23:35241 /24:198714
/25:1153 /26:1360 /27:759 /28:163 /29:4 /30:0
/31:0 /32:5
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2188 3548 bellsouth.net, inc.
18566 2043 2094 Covad Communications
7029 2006 2338 Windstream Communications Inc
10620 1594 1699 TVCABLE BOGOTA
8402 1552 1577 Corbina telecom
30036 1365 1405 Mediacom Communications Corp
11492 1117 1155 Cable One
1785 1057 1844 PaeTec Communications, Inc.
7011 1051 1169 Citizens Utilities
22773 951 1489 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:417 2:489 4:15 5:1 6:3 8:361
12:1953 13:1 14:539 15:11 16:3 17:7
20:9 23:58 24:1682 27:1027 31:665 32:65
33:2 34:2 36:4 38:756 40:110 41:2707
42:56 44:3 46:1029 47:3 49:299 50:446
52:13 55:7 56:2 57:47 58:902 59:496
60:361 61:1129 62:1093 63:1964 64:4061 65:2304
66:4271 67:2002 68:1164 69:3183 70:881 71:385
72:1804 74:2609 75:388 76:316 77:963 78:881
79:470 80:1125 81:832 82:519 83:525 84:618
85:1151 86:399 87:975 88:356 89:1596 90:237
91:4252 92:535 93:1550 94:1299 95:1144 96:428
97:286 98:937 99:37 101:226 103:434 106:8
107:84 108:72 109:1150 110:660 111:798 112:343
113:485 114:622 115:716 116:881 117:723 118:878
119:1274 120:344 121:695 122:1573 123:1012 124:1352
125:1355 128:246 129:189 130:164 131:626 132:150
133:21 134:221 135:54 136:212 137:142 138:286
139:122 140:482 141:317 142:388 143:412 144:491
145:64 146:461 147:223 148:636 149:267 150:168
151:194 152:446 153:178 154:7 155:384 156:208
157:360 158:154 159:486 160:330 161:214 162:371
163:173 164:511 165:369 166:540 167:441 168:818
169:145 170:880 171:88 172:4 173:1711 174:677
175:417 176:306 177:372 178:1085 180:1137 181:37
182:651 183:221 184:389 185:1 186:1331 187:763
188:1062 189:1147 190:5174 192:5925 193:5049 194:3560
195:3134 196:1269 197:167 198:3632 199:4202 200:5508
201:1696 202:8535 203:8484 204:4311 205:2368 206:2673
207:2820 208:4042 209:3581 210:2718 211:1457 212:2086
213:1780 214:807 215:95 216:4919 217:1602 218:566
219:342 220:1253 221:517 222:322 223:265
End of report