Routing Table Report 04:00 +10GMT Wed 13 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 352825
Prefixes after maximum aggregation: 160250
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 175039
Total ASes present in the Internet Routing Table: 37260
Prefixes per ASN: 9.47
Origin-only ASes present in the Internet Routing Table: 31245
Origin ASes announcing only one prefix: 15029
Transit ASes present in the Internet Routing Table: 5029
Transit-only ASes present in the Internet Routing Table: 128
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 36
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 571
Unregistered ASNs in the Routing Table: 254
Number of 32-bit ASNs allocated by the RIRs: 1281
Number of 32-bit ASNs visible in the Routing Table: 986
Prefixes from 32-bit ASNs in the Routing Table: 2185
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 162
Number of addresses announced to Internet: 2408891968
Equivalent to 143 /8s, 148 /16s and 198 /24s
Percentage of available address space announced: 65.0
Percentage of allocated address space announced: 65.0
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.5
Total number of prefixes smaller than registry allocations: 146144
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87797
Total APNIC prefixes after maximum aggregation: 29910
APNIC Deaggregation factor: 2.94
Prefixes being announced from the APNIC address blocks: 84786
Unique aggregates announced from the APNIC address blocks: 36940
APNIC Region origin ASes present in the Internet Routing Table: 4402
APNIC Prefixes per ASN: 19.26
APNIC Region origin ASes announcing only one prefix: 1223
APNIC Region transit ASes present in the Internet Routing Table: 701
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 20
Number of APNIC region 32-bit ASNs visible in the Routing Table: 46
Number of APNIC addresses announced to Internet: 608826400
Equivalent to 36 /8s, 73 /16s and 244 /24s
Percentage of available APNIC address space announced: 77.2
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: 138934
Total ARIN prefixes after maximum aggregation: 70957
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 111409
Unique aggregates announced from the ARIN address blocks: 45166
ARIN Region origin ASes present in the Internet Routing Table: 14315
ARIN Prefixes per ASN: 7.78
ARIN Region origin ASes announcing only one prefix: 5468
ARIN Region transit ASes present in the Internet Routing Table: 1486
Average ARIN Region AS path length visible: 3.9
Max ARIN Region AS path length visible: 23
Number of ARIN region 32-bit ASNs visible in the Routing Table: 11
Number of ARIN addresses announced to Internet: 797889792
Equivalent to 47 /8s, 142 /16s and 213 /24s
Percentage of available ARIN address space announced: 63.4
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: 83717
Total RIPE prefixes after maximum aggregation: 47671
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 76918
Unique aggregates announced from the RIPE address blocks: 50668
RIPE Region origin ASes present in the Internet Routing Table: 15494
RIPE Prefixes per ASN: 4.96
RIPE Region origin ASes announcing only one prefix: 7777
RIPE Region transit ASes present in the Internet Routing Table: 2426
Average RIPE Region AS path length visible: 4.7
Max RIPE Region AS path length visible: 36
Number of RIPE region 32-bit ASNs visible in the Routing Table: 731
Number of RIPE addresses announced to Internet: 464393216
Equivalent to 27 /8s, 174 /16s and 20 /24s
Percentage of available RIPE address space announced: 74.8
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: 32307
Total LACNIC prefixes after maximum aggregation: 7434
LACNIC Deaggregation factor: 4.35
Prefixes being announced from the LACNIC address blocks: 31282
Unique aggregates announced from the LACNIC address blocks: 16389
LACNIC Region origin ASes present in the Internet Routing Table: 1436
LACNIC Prefixes per ASN: 21.78
LACNIC Region origin ASes announcing only one prefix: 427
LACNIC Region transit ASes present in the Internet Routing Table: 262
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: 193
Number of LACNIC addresses announced to Internet: 81878400
Equivalent to 4 /8s, 225 /16s and 93 /24s
Percentage of available LACNIC address space announced: 54.2
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: 7610
Total AfriNIC prefixes after maximum aggregation: 1816
AfriNIC Deaggregation factor: 4.19
Prefixes being announced from the AfriNIC address blocks: 5976
Unique aggregates announced from the AfriNIC address blocks: 1886
AfriNIC Region origin ASes present in the Internet Routing Table: 443
AfriNIC Prefixes per ASN: 13.49
AfriNIC Region origin ASes announcing only one prefix: 134
AfriNIC Region transit ASes present in the Internet Routing Table: 97
Average AfriNIC Region AS path length visible: 4.8
Max AfriNIC Region AS path length visible: 31
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 22715648
Equivalent to 1 /8s, 90 /16s and 157 /24s
Percentage of available AfriNIC address space announced: 33.8
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 2439 9517 908 Korea Telecom (KIX)
7545 1545 301 82 TPG Internet Pty Ltd
17974 1500 480 33 PT TELEKOMUNIKASI INDONESIA
4755 1445 638 165 TATA Communications formerly
24560 1137 322 203 Bharti Airtel Ltd., Telemedia
4808 1063 2140 293 CNCGROUP IP network: China169
9829 1007 870 50 BSNL National Internet Backbo
9583 975 71 493 Sify Limited
17488 941 162 98 Hathway IP Over Cable Interne
18101 934 116 139 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 3664 3822 255 bellsouth.net, inc.
4323 2540 1090 396 Time Warner Telecom
1785 1786 681 127 PaeTec Communications, Inc.
18566 1642 335 197 Covad Communications
6478 1610 305 42 AT&T Worldnet Services
20115 1537 1552 641 Charter Communications
19262 1494 4949 297 Verizon Global Networks
7018 1350 6801 879 AT&T WorldNet Services
22773 1295 2865 84 Cox Communications, Inc.
2386 1271 536 914 AT&T Data Communications Serv
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 517 1780 319 UPC Distribution Services
34984 508 98 185 BILISIM TELEKOM
29049 467 33 34 AzerSat LLC.
3292 455 2013 392 TDC Tele Danmark
8866 446 134 26 Bulgarian Telecommunication C
20940 441 127 338 Akamai Technologies European
3320 417 7607 363 Deutsche Telekom AG
12479 404 577 6 Uni2 Autonomous System
8551 403 353 46 Bezeq International
702 397 1802 310 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 1418 263 155 TVCABLE BOGOTA
28573 1276 972 86 NET Servicos de Comunicao S.A
8151 1243 2683 369 UniNet S.A. de C.V.
6503 921 354 72 AVANTEL, S.A.
7303 920 465 145 Telecom Argentina Stet-France
14420 661 53 90 CORPORACION NACIONAL DE TELEC
22047 567 310 15 VTR PUNTO NET S.A.
3816 516 225 98 Empresa Nacional de Telecomun
11172 487 99 81 Servicios Alestra S.A de C.V
27947 481 53 54 Telconet 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 837 445 11 TEDATA
24863 777 147 39 LINKdotNET AS number
15475 420 90 8 Nile Online
36992 297 287 12 Etisalat MISR
3741 266 985 227 The Internet Solution
6713 231 215 12 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
24835 222 78 10 RAYA Telecom - Egypt
29571 161 17 11 Ci Telecom Autonomous system
16637 148 441 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 3664 3822 255 bellsouth.net, inc.
4323 2540 1090 396 Time Warner Telecom
4766 2439 9517 908 Korea Telecom (KIX)
23456 2185 637 1181 32-bit ASN transition
1785 1786 681 127 PaeTec Communications, Inc.
18566 1642 335 197 Covad Communications
6478 1610 305 42 AT&T Worldnet Services
7545 1545 301 82 TPG Internet Pty Ltd
20115 1537 1552 641 Charter Communications
17974 1500 480 33 PT TELEKOMUNIKASI INDONESIA
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 2540 2144 Time Warner Telecom
1785 1786 1659 PaeTec Communications, Inc.
6478 1610 1568 AT&T Worldnet Services
4766 2439 1531 Korea Telecom (KIX)
17974 1500 1467 PT TELEKOMUNIKASI INDONESIA
7545 1545 1463 TPG Internet Pty Ltd
18566 1642 1445 Covad Communications
4755 1445 1280 TATA Communications formerly
10620 1418 1263 TVCABLE BOGOTA
11492 1263 1248 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
45083 UNALLOCATED 1.45.0.0/16 4808 CNCGROUP IP network:
45083 UNALLOCATED 1.45.92.0/22 4808 CNCGROUP IP network:
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.14.170.0/24 4323 Time Warner Telecom
13746 UNALLOCATED 12.24.56.0/24 7018 AT&T WorldNet Servic
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
Complete listing at http://thyme.rand.apnic.net/current/data-badAS
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
2.56.0.0/16 44559 E-Rent LLC
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
31.6.96.0/21 43554 Cifrovye Dispetcherskie Siste
31.6.96.0/19 43554 Cifrovye Dispetcherskie Siste
31.6.104.0/21 43554 Cifrovye Dispetcherskie Siste
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 /10:26 /11:75 /12:219
/13:452 /14:774 /15:1376 /16:11599 /17:5732 /18:9464
/19:19128 /20:25030 /21:25473 /22:33601 /23:32335 /24:184377
/25:1116 /26:1268 /27:694 /28:39 /29:8 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2261 3664 bellsouth.net, inc.
18566 1620 1642 Covad Communications
6478 1564 1610 AT&T Worldnet Services
4323 1361 2540 Time Warner Telecom
10620 1308 1418 TVCABLE BOGOTA
11492 1212 1263 Cable One
23456 1128 2185 32-bit ASN transition
7011 1061 1160 Citizens Utilities
1785 1056 1786 PaeTec Communications, Inc.
22773 840 1295 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:299 2:58 4:14 5:1 8:350 12:2001
13:1 14:436 15:15 16:3 17:8 20:9
23:5 24:1608 27:715 31:220 32:60 33:3
34:2 37:1 38:763 39:1 40:101 41:2339
42:1 44:3 46:823 47:4 49:175 50:158
52:13 55:5 56:2 57:28 58:844 59:490
60:387 61:1153 62:1003 63:1922 64:3891 65:2333
66:4311 67:1800 68:1081 69:2944 70:699 71:344
72:1899 73:1 74:2333 75:285 76:336 77:852
78:690 79:454 80:1090 81:830 82:510 83:456
84:648 85:1059 86:564 87:761 88:339 89:1585
90:180 91:3689 92:514 93:1059 94:1256 95:786
96:450 97:251 98:819 99:35 101:61 103:1
106:2 107:4 108:78 109:946 110:536 111:690
112:325 113:388 114:521 115:706 116:939 117:674
118:775 119:1138 120:286 121:713 122:1627 123:1062
124:1252 125:1266 128:265 129:165 130:173 131:563
132:102 133:20 134:217 135:49 136:213 137:142
138:301 139:103 140:488 141:174 142:375 143:392
144:480 145:52 146:443 147:205 148:593 149:273
150:168 151:187 152:306 153:180 154:3 155:393
156:189 157:355 158:131 159:380 160:317 161:243
162:277 163:164 164:490 165:349 166:514 167:418
168:725 169:154 170:781 171:75 172:1 173:1257
174:540 175:350 177:79 178:849 180:804 181:7
182:419 183:200 184:241 185:1 186:1131 187:826
188:952 189:995 190:4834 192:5780 193:4804 194:3466
195:2957 196:1195 197:16 198:3577 199:3904 200:5536
201:1479 202:8354 203:8431 204:4126 205:2325 206:2652
207:3025 208:3925 209:3506 210:2697 211:1362 212:1976
213:1718 214:730 215:67 216:4861 217:1659 218:556
219:384 220:1195 221:465 222:311 223:117
End of report
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