Routing Table Report 04:00 +10GMT Fri 23 Mar, 2012
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 402396
Prefixes after maximum aggregation: 171274
Deaggregation factor: 2.35
Unique aggregates announced to Internet: 195264
Total ASes present in the Internet Routing Table: 40477
Prefixes per ASN: 9.94
Origin-only ASes present in the Internet Routing Table: 32929
Origin ASes announcing only one prefix: 15499
Transit ASes present in the Internet Routing Table: 5437
Transit-only ASes present in the Internet Routing Table: 142
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: 448
Unregistered ASNs in the Routing Table: 216
Number of 32-bit ASNs allocated by the RIRs: 2328
Number of 32-bit ASNs visible in the Routing Table: 2111
Prefixes from 32-bit ASNs in the Routing Table: 5132
Special use prefixes present in the Routing Table: 2
Prefixes being announced from unallocated address space: 860
Number of addresses announced to Internet: 2528519568
Equivalent to 150 /8s, 182 /16s and 37 /24s
Percentage of available address space announced: 68.2
Percentage of allocated address space announced: 68.2
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 92.1
Total number of prefixes smaller than registry allocations: 171176
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 98421
Total APNIC prefixes after maximum aggregation: 32034
APNIC Deaggregation factor: 3.07
Prefixes being announced from the APNIC address blocks: 94828
Unique aggregates announced from the APNIC address blocks: 39392
APNIC Region origin ASes present in the Internet Routing Table: 4679
APNIC Prefixes per ASN: 20.27
APNIC Region origin ASes announcing only one prefix: 1239
APNIC Region transit ASes present in the Internet Routing Table: 729
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: 167
Number of APNIC addresses announced to Internet: 641193312
Equivalent to 38 /8s, 55 /16s and 213 /24s
Percentage of available APNIC address space announced: 81.3
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: 149068
Total ARIN prefixes after maximum aggregation: 75784
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 120581
Unique aggregates announced from the ARIN address blocks: 49888
ARIN Region origin ASes present in the Internet Routing Table: 14947
ARIN Prefixes per ASN: 8.07
ARIN Region origin ASes announcing only one prefix: 5689
ARIN Region transit ASes present in the Internet Routing Table: 1576
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 22
Number of ARIN region 32-bit ASNs visible in the Routing Table: 16
Number of ARIN addresses announced to Internet: 806594560
Equivalent to 48 /8s, 19 /16s and 168 /24s
Percentage of available ARIN address space announced: 64.1
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: 101506
Total RIPE prefixes after maximum aggregation: 53049
RIPE Deaggregation factor: 1.91
Prefixes being announced from the RIPE address blocks: 92828
Unique aggregates announced from the RIPE address blocks: 57132
RIPE Region origin ASes present in the Internet Routing Table: 16360
RIPE Prefixes per ASN: 5.67
RIPE Region origin ASes announcing only one prefix: 7974
RIPE Region transit ASes present in the Internet Routing Table: 2641
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: 1436
Number of RIPE addresses announced to Internet: 502226440
Equivalent to 29 /8s, 239 /16s and 94 /24s
Percentage of available RIPE address space announced: 80.9
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: 39204
Total LACNIC prefixes after maximum aggregation: 8095
LACNIC Deaggregation factor: 4.84
Prefixes being announced from the LACNIC address blocks: 38916
Unique aggregates announced from the LACNIC address blocks: 19658
LACNIC Region origin ASes present in the Internet Routing Table: 1572
LACNIC Prefixes per ASN: 24.76
LACNIC Region origin ASes announcing only one prefix: 431
LACNIC Region transit ASes present in the Internet Routing Table: 288
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 17
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 487
Number of LACNIC addresses announced to Internet: 98598536
Equivalent to 5 /8s, 224 /16s and 126 /24s
Percentage of available LACNIC address space announced: 65.3
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: 8766
Total AfriNIC prefixes after maximum aggregation: 2128
AfriNIC Deaggregation factor: 4.12
Prefixes being announced from the AfriNIC address blocks: 6844
Unique aggregates announced from the AfriNIC address blocks: 2250
AfriNIC Region origin ASes present in the Internet Routing Table: 527
AfriNIC Prefixes per ASN: 12.99
AfriNIC Region origin ASes announcing only one prefix: 166
AfriNIC Region transit ASes present in the Internet Routing Table: 120
Average AfriNIC Region AS path length visible: 4.5
Max AfriNIC Region AS path length visible: 25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 31514624
Equivalent to 1 /8s, 224 /16s and 224 /24s
Percentage of available AfriNIC address space announced: 47.0
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 2498 11110 997 Korea Telecom (KIX)
17974 1757 503 64 PT TELEKOMUNIKASI INDONESIA
7545 1657 303 88 TPG Internet Pty Ltd
4755 1573 386 160 TATA Communications formerly
9583 1238 95 540 Sify Limited
9829 1187 1001 30 BSNL National Internet Backbo
7552 1171 1062 11 Vietel Corporation
4808 1098 2048 315 CNCGROUP IP network: China169
24560 1014 384 166 Bharti Airtel Ltd., Telemedia
18101 947 130 159 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
7029 3378 990 155 Windstream Communications Inc
6389 3374 3807 197 bellsouth.net, inc.
18566 2093 383 179 Covad Communications
1785 1883 680 128 PaeTec Communications, Inc.
20115 1633 1558 628 Charter Communications
4323 1604 1060 382 Time Warner Telecom
22773 1546 2910 111 Cox Communications, Inc.
30036 1401 253 745 Mediacom Communications Corp
7018 1279 9776 835 AT&T WorldNet Services
11492 1165 212 413 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
8402 1795 544 16 Corbina telecom
2118 1427 97 13 EUnet/RELCOM Autonomous Syste
15557 1034 2247 55 LDCOM NETWORKS
31148 671 37 9 FreeNet ISP
34984 664 188 174 BILISIM TELEKOM
6830 641 1943 412 UPC Distribution Services
12479 640 653 56 Uni2 Autonomous System
20940 633 203 489 Akamai Technologies European
8551 575 360 81 Bezeq International
3320 532 8442 398 Deutsche Telekom AG
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 1807 329 130 TVCABLE BOGOTA
28573 1696 1099 60 NET Servicos de Comunicao S.A
8151 1483 3017 348 UniNet S.A. de C.V.
7303 1350 825 189 Telecom Argentina Stet-France
26615 901 684 29 Tim Brasil S.A.
27947 687 69 110 Telconet S.A
11172 635 91 73 Servicios Alestra S.A de C.V
22047 584 326 15 VTR PUNTO NET S.A.
3816 559 239 96 Empresa Nacional de Telecomun
6503 559 418 65 AVANTEL, S.A.
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 1242 958 13 TEDATA
24863 683 274 37 LINKdotNET AS number
6713 488 649 18 Itissalat Al-MAGHRIB
3741 271 923 228 The Internet Solution
15706 227 32 6 Sudatel Internet Exchange Aut
12258 197 28 62 Vodacom Internet Company
15399 193 29 12 Wananchi Online Limited
24835 178 80 8 RAYA Telecom - Egypt
33776 162 12 25 Starcomms Nigeria Limited
36923 157 20 4 Swift Networks Limited
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
7029 3378 990 155 Windstream Communications Inc
6389 3374 3807 197 bellsouth.net, inc.
4766 2498 11110 997 Korea Telecom (KIX)
18566 2093 383 179 Covad Communications
1785 1883 680 128 PaeTec Communications, Inc.
10620 1807 329 130 TVCABLE BOGOTA
8402 1795 544 16 Corbina telecom
17974 1757 503 64 PT TELEKOMUNIKASI INDONESIA
28573 1696 1099 60 NET Servicos de Comunicao S.A
7545 1657 303 88 TPG Internet Pty Ltd
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
6389 3374 3177 bellsouth.net, inc.
18566 2093 1914 Covad Communications
8402 1795 1779 Corbina telecom
1785 1883 1755 PaeTec Communications, Inc.
17974 1757 1693 PT TELEKOMUNIKASI INDONESIA
10620 1807 1677 TVCABLE BOGOTA
28573 1696 1636 NET Servicos de Comunicao S.A
7545 1657 1569 TPG Internet Pty Ltd
4766 2498 1501 Korea Telecom (KIX)
22773 1546 1435 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
54439 UNALLOCATED 8.25.174.0/24 3356 Level 3 Communicatio
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
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
128.0.24.0/24 12654 RIPE NCC RIS Project
Complete listing at http://thyme.rand.apnic.net/current/data-dsua
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
14.192.0.0/22 45464 Room 201, TGU Bldg
14.192.4.0/22 45464 Room 201, TGU Bldg
14.192.8.0/22 45464 Room 201, TGU Bldg
14.192.12.0/22 45464 Room 201, TGU Bldg
14.192.16.0/22 45464 Room 201, TGU Bldg
14.192.20.0/22 45464 Room 201, TGU Bldg
14.192.24.0/22 45464 Room 201, TGU Bldg
14.192.28.0/22 45464 Room 201, TGU Bldg
23.27.0.0/20 54500 EGIHosting
23.27.16.0/20 54500 EGIHosting
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 /10:28 /11:81 /12:234
/13:458 /14:823 /15:1475 /16:12194 /17:6249 /18:10430
/19:20540 /20:28662 /21:29583 /22:40088 /23:37345 /24:210441
/25:1218 /26:1455 /27:797 /28:168 /29:61 /30:17
/31:0 /32:18
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
7029 3038 3378 Windstream Communications Inc
6389 2090 3374 bellsouth.net, inc.
18566 2042 2093 Covad Communications
8402 1772 1795 Corbina telecom
10620 1704 1807 TVCABLE BOGOTA
30036 1349 1401 Mediacom Communications Corp
11492 1128 1165 Cable One
1785 1065 1883 PaeTec Communications, Inc.
8452 1055 1242 TEDATA
7011 1037 1151 Citizens Utilities
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:528 2:761 4:14 6:3 8:393 12:1974
13:1 14:604 15:12 16:3 17:7 20:8
23:146 24:1754 27:1244 31:933 32:62 33:2
34:2 36:8 37:293 38:780 40:120 41:3095
42:128 44:3 46:1456 47:3 49:342 50:514
52:13 54:6 55:11 56:3 57:37 58:957
59:493 60:278 61:1194 62:975 63:1993 64:4192
65:2274 66:4505 67:2006 68:1147 69:3182 70:902
71:438 72:1803 74:2591 75:491 76:319 77:963
78:981 79:503 80:1234 81:904 82:652 83:553
84:616 85:1195 86:723 87:919 88:348 89:1612
90:298 91:4630 92:520 93:1505 94:1456 95:1160
96:375 97:316 98:815 99:38 100:6 101:151
103:923 106:64 107:177 108:209 109:1552 110:750
111:898 112:444 113:557 114:631 115:767 116:869
117:726 118:907 119:1206 120:335 121:694 122:1658
123:1094 124:1360 125:1264 128:551 129:190 130:263
131:594 132:173 133:21 134:242 135:63 136:211
137:194 138:275 139:145 140:494 141:241 142:389
143:402 144:499 145:69 146:491 147:243 148:723
149:295 150:157 151:176 152:459 153:171 154:7
155:428 156:213 157:379 158:163 159:520 160:326
161:249 162:343 163:186 164:544 165:390 166:562
167:463 168:810 169:148 170:843 171:123 172:2
173:1716 174:593 175:433 176:458 177:579 178:1289
180:1126 181:73 182:767 183:277 184:442 185:1
186:2137 187:841 188:1146 189:1197 190:5551 192:5987
193:5592 194:4569 195:3641 196:1286 197:187 198:3625
199:4460 200:5762 201:1654 202:8444 203:8597 204:4354
205:2467 206:2743 207:2802 208:4053 209:3605 210:2760
211:1466 212:1975 213:1904 214:891 215:108 216:5061
217:1526 218:537 219:333 220:1230 221:552 222:325
223:328
End of report
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