Routing Table Report 04:00 +10GMT Fri 21 Oct, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 380684
Prefixes after maximum aggregation: 169824
Deaggregation factor: 2.24
Unique aggregates announced to Internet: 185425
Total ASes present in the Internet Routing Table: 39130
Prefixes per ASN: 9.73
Origin-only ASes present in the Internet Routing Table: 32351
Origin ASes announcing only one prefix: 15519
Transit ASes present in the Internet Routing Table: 5248
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: 1476
Unregistered ASNs in the Routing Table: 816
Number of 32-bit ASNs allocated by the RIRs: 1874
Number of 32-bit ASNs visible in the Routing Table: 1531
Prefixes from 32-bit ASNs in the Routing Table: 3511
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 93
Number of addresses announced to Internet: 2485465824
Equivalent to 148 /8s, 37 /16s and 50 /24s
Percentage of available address space announced: 67.1
Percentage of allocated address space announced: 67.1
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 91.5
Total number of prefixes smaller than registry allocations: 160987
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 94650
Total APNIC prefixes after maximum aggregation: 30911
APNIC Deaggregation factor: 3.06
Prefixes being announced from the APNIC address blocks: 91101
Unique aggregates announced from the APNIC address blocks: 37990
APNIC Region origin ASes present in the Internet Routing Table: 4581
APNIC Prefixes per ASN: 19.89
APNIC Region origin ASes announcing only one prefix: 1260
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: 95
Number of APNIC addresses announced to Internet: 628890976
Equivalent to 37 /8s, 124 /16s and 29 /24s
Percentage of available APNIC address space announced: 79.8
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: 145779
Total ARIN prefixes after maximum aggregation: 74426
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 117709
Unique aggregates announced from the ARIN address blocks: 47864
ARIN Region origin ASes present in the Internet Routing Table: 14745
ARIN Prefixes per ASN: 7.98
ARIN Region origin ASes announcing only one prefix: 5669
ARIN Region transit ASes present in the Internet Routing Table: 1551
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: 804736512
Equivalent to 47 /8s, 247 /16s and 78 /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: 92777
Total RIPE prefixes after maximum aggregation: 50710
RIPE Deaggregation factor: 1.83
Prefixes being announced from the RIPE address blocks: 85471
Unique aggregates announced from the RIPE address blocks: 54169
RIPE Region origin ASes present in the Internet Routing Table: 16060
RIPE Prefixes per ASN: 5.32
RIPE Region origin ASes announcing only one prefix: 7982
RIPE Region transit ASes present in the Internet Routing Table: 2525
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: 1073
Number of RIPE addresses announced to Internet: 491077504
Equivalent to 29 /8s, 69 /16s and 63 /24s
Percentage of available RIPE address space announced: 79.1
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: 35276
Total LACNIC prefixes after maximum aggregation: 7918
LACNIC Deaggregation factor: 4.46
Prefixes being announced from the LACNIC address blocks: 34689
Unique aggregates announced from the LACNIC address blocks: 18067
LACNIC Region origin ASes present in the Internet Routing Table: 1544
LACNIC Prefixes per ASN: 22.47
LACNIC Region origin ASes announcing only one prefix: 448
LACNIC Region transit ASes present in the Internet Routing Table: 281
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: 347
Number of LACNIC addresses announced to Internet: 91653248
Equivalent to 5 /8s, 118 /16s and 132 /24s
Percentage of available LACNIC address space announced: 60.7
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: 8524
Total AfriNIC prefixes after maximum aggregation: 2011
AfriNIC Deaggregation factor: 4.24
Prefixes being announced from the AfriNIC address blocks: 6589
Unique aggregates announced from the AfriNIC address blocks: 2003
AfriNIC Region origin ASes present in the Internet Routing Table: 491
AfriNIC Prefixes per ASN: 13.42
AfriNIC Region origin ASes announcing only one prefix: 160
AfriNIC Region transit ASes present in the Internet Routing Table: 106
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: 27813120
Equivalent to 1 /8s, 168 /16s and 101 /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 2502 11095 963 Korea Telecom (KIX)
17974 1882 519 33 PT TELEKOMUNIKASI INDONESIA
7545 1611 303 86 TPG Internet Pty Ltd
4755 1540 639 174 TATA Communications formerly
7552 1389 1064 8 Vietel Corporation
9829 1166 989 28 BSNL National Internet Backbo
9583 1088 80 503 Sify Limited
4808 1076 2090 305 CNCGROUP IP network: China169
24560 967 343 220 Bharti Airtel Ltd., Telemedia
18101 950 166 148 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 3546 3815 221 bellsouth.net, inc.
7029 2252 1016 197 Windstream Communications Inc
18566 2098 383 177 Covad Communications
1785 1838 680 122 PaeTec Communications, Inc.
4323 1626 1083 391 Time Warner Telecom
20115 1593 1545 623 Charter Communications
22773 1462 2907 100 Cox Communications, Inc.
19262 1395 4728 400 Verizon Global Networks
30036 1394 251 672 Mediacom Communications Corp
7018 1342 7078 851 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
3352 2214 2317 51 Ibernet, Internet Access Netw
8402 1493 352 13 Corbina telecom
6830 653 1927 415 UPC Distribution Services
34984 584 108 180 BILISIM TELEKOM
20940 547 182 421 Akamai Technologies European
3320 504 8169 384 Deutsche Telekom AG
12479 483 593 7 Uni2 Autonomous System
3292 481 2080 408 TDC Tele Danmark
8866 459 133 26 Bulgarian Telecommunication C
29049 423 31 55 AzerSat LLC.
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 1692 312 154 TVCABLE BOGOTA
28573 1439 1032 69 NET Servicos de Comunicao S.A
8151 1428 2895 350 UniNet S.A. de C.V.
7303 1228 747 176 Telecom Argentina Stet-France
27947 587 72 83 Telconet S.A
22047 580 322 17 VTR PUNTO NET S.A.
6503 571 450 69 AVANTEL, S.A.
7738 552 1050 31 Telecomunicacoes da Bahia S.A
3816 537 233 96 Empresa Nacional de Telecomun
11172 522 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 802 146 36 LINKdotNET AS number
8452 642 446 12 TEDATA
15475 443 74 8 Nile Online
36992 297 415 21 Etisalat MISR
3741 278 938 229 The Internet Solution
6713 244 519 14 Itissalat Al-MAGHRIB
15706 240 32 6 Sudatel Internet Exchange Aut
29571 217 17 13 Ci Telecom Autonomous system
33776 197 12 16 Starcomms Nigeria Limited
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 3546 3815 221 bellsouth.net, inc.
4766 2502 11095 963 Korea Telecom (KIX)
7029 2252 1016 197 Windstream Communications Inc
3352 2214 2317 51 Ibernet, Internet Access Netw
18566 2098 383 177 Covad Communications
17974 1882 519 33 PT TELEKOMUNIKASI INDONESIA
1785 1838 680 122 PaeTec Communications, Inc.
10620 1692 312 154 TVCABLE BOGOTA
4323 1626 1083 391 Time Warner Telecom
7545 1611 303 86 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
3352 2214 2163 Ibernet, Internet Access Netw
7029 2252 2055 Windstream Communications Inc
18566 2098 1921 Covad Communications
17974 1882 1849 PT TELEKOMUNIKASI INDONESIA
1785 1838 1716 PaeTec Communications, Inc.
4766 2502 1539 Korea Telecom (KIX)
10620 1692 1538 TVCABLE BOGOTA
7545 1611 1525 TPG Internet Pty Ltd
8402 1493 1480 Corbina telecom
7552 1389 1381 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
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 37125 Layer3 Limited
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 /12:235
/13:464 /14:808 /15:1425 /16:12007 /17:6042 /18:10046
/19:19966 /20:27462 /21:27606 /22:37370 /23:35885 /24:197807
/25:1153 /26:1342 /27:749 /28:169 /29:4 /30:0
/31:0 /32:5
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2185 3546 bellsouth.net, inc.
18566 2047 2098 Covad Communications
7029 1926 2252 Windstream Communications Inc
3352 1760 2214 Ibernet, Internet Access Netw
10620 1587 1692 TVCABLE BOGOTA
8402 1469 1493 Corbina telecom
30036 1356 1394 Mediacom Communications Corp
11492 1111 1149 Cable One
1785 1057 1838 PaeTec Communications, Inc.
7011 1047 1165 Citizens Utilities
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:403 2:483 4:15 5:1 6:3 8:361
12:1957 13:1 14:541 15:11 16:3 17:7
20:9 23:58 24:1676 27:965 31:604 32:65
33:4 34:2 36:4 38:755 40:110 41:2664
42:53 44:3 46:998 47:3 49:296 50:439
52:13 55:6 56:2 57:36 58:883 59:493
60:363 61:1181 62:1086 63:1938 64:4075 65:2306
66:4282 67:1978 68:1153 69:3242 70:892 71:376
72:1846 74:2571 75:387 76:320 77:880 78:861
79:480 80:1586 81:941 82:501 83:576 84:622
85:1124 86:405 87:886 88:418 89:1600 90:269
91:4212 92:496 93:1538 94:1309 95:1074 96:437
97:283 98:915 99:37 101:216 103:380 106:70
107:73 108:72 109:1046 110:672 111:788 112:329
113:485 114:610 115:706 116:881 117:711 118:899
119:1248 120:340 121:692 122:1568 123:1018 124:1357
125:1383 128:249 129:182 130:163 131:592 132:145
133:21 134:219 135:54 136:213 137:140 138:284
139:119 140:488 141:298 142:387 143:436 144:495
145:63 146:472 147:215 148:642 149:267 150:166
151:192 152:449 153:178 154:7 155:385 156:206
157:361 158:152 159:479 160:324 161:214 162:340
163:174 164:510 165:367 166:536 167:438 168:742
169:146 170:872 171:86 172:4 173:1696 174:684
175:428 176:281 177:338 178:1058 180:1089 181:36
182:644 183:217 184:377 185:1 186:1299 187:703
188:933 189:873 190:5116 192:5916 193:5039 194:3558
195:3108 196:1251 197:151 198:3622 199:4172 200:5516
201:1649 202:8563 203:8509 204:4297 205:2366 206:2676
207:2828 208:4047 209:3594 210:2691 211:1455 212:2079
213:1769 214:787 215:96 216:5004 217:1615 218:564
219:342 220:1243 221:515 222:345 223:278
End of report