Routing Table Report 04:00 +10GMT Mon 28 Mar, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 351441
Prefixes after maximum aggregation: 159561
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 173585
Total ASes present in the Internet Routing Table: 37080
Prefixes per ASN: 9.48
Origin-only ASes present in the Internet Routing Table: 31163
Origin ASes announcing only one prefix: 14980
Transit ASes present in the Internet Routing Table: 4990
Transit-only ASes present in the Internet Routing Table: 130
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 31
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 452
Unregistered ASNs in the Routing Table: 217
Number of 32-bit ASNs allocated by the RIRs: 1239
Number of 32-bit ASNs visible in the Routing Table: 927
Prefixes from 32-bit ASNs in the Routing Table: 2020
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 190
Number of addresses announced to Internet: 2391089728
Equivalent to 142 /8s, 133 /16s and 34 /24s
Percentage of available address space announced: 64.5
Percentage of allocated address space announced: 64.5
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 89.7
Total number of prefixes smaller than registry allocations: 145492
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87658
Total APNIC prefixes after maximum aggregation: 29902
APNIC Deaggregation factor: 2.93
Prefixes being announced from the APNIC address blocks: 84532
Unique aggregates announced from the APNIC address blocks: 36630
APNIC Region origin ASes present in the Internet Routing Table: 4370
APNIC Prefixes per ASN: 19.34
APNIC Region origin ASes announcing only one prefix: 1213
APNIC Region transit ASes present in the Internet Routing Table: 691
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 20
Number of APNIC region 32-bit ASNs visible in the Routing Table: 45
Number of APNIC addresses announced to Internet: 600770112
Equivalent to 35 /8s, 207 /16s and 6 /24s
Percentage of available APNIC address space announced: 76.2
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: 138626
Total ARIN prefixes after maximum aggregation: 70815
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 111050
Unique aggregates announced from the ARIN address blocks: 44909
ARIN Region origin ASes present in the Internet Routing Table: 14276
ARIN Prefixes per ASN: 7.78
ARIN Region origin ASes announcing only one prefix: 5429
ARIN Region transit ASes present in the Internet Routing Table: 1476
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 23
Number of ARIN region 32-bit ASNs visible in the Routing Table: 10
Number of ARIN addresses announced to Internet: 797276928
Equivalent to 47 /8s, 133 /16s and 123 /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: 82910
Total RIPE prefixes after maximum aggregation: 47377
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 76271
Unique aggregates announced from the RIPE address blocks: 50064
RIPE Region origin ASes present in the Internet Routing Table: 15446
RIPE Prefixes per ASN: 4.94
RIPE Region origin ASes announcing only one prefix: 7776
RIPE Region transit ASes present in the Internet Routing Table: 2406
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 30
Number of RIPE region 32-bit ASNs visible in the Routing Table: 686
Number of RIPE addresses announced to Internet: 465049856
Equivalent to 27 /8s, 184 /16s and 25 /24s
Percentage of available RIPE address space announced: 74.9
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: 32394
Total LACNIC prefixes after maximum aggregation: 7356
LACNIC Deaggregation factor: 4.40
Prefixes being announced from the LACNIC address blocks: 31319
Unique aggregates announced from the LACNIC address blocks: 16269
LACNIC Region origin ASes present in the Internet Routing Table: 1437
LACNIC Prefixes per ASN: 21.79
LACNIC Region origin ASes announcing only one prefix: 433
LACNIC Region transit ASes present in the Internet Routing Table: 264
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: 181
Number of LACNIC addresses announced to Internet: 81517184
Equivalent to 4 /8s, 219 /16s and 218 /24s
Percentage of available LACNIC address space announced: 54.0
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: 7625
Total AfriNIC prefixes after maximum aggregation: 1818
AfriNIC Deaggregation factor: 4.19
Prefixes being announced from the AfriNIC address blocks: 5993
Unique aggregates announced from the AfriNIC address blocks: 1857
AfriNIC Region origin ASes present in the Internet Routing Table: 438
AfriNIC Prefixes per ASN: 13.68
AfriNIC Region origin ASes announcing only one prefix: 129
AfriNIC Region transit ASes present in the Internet Routing Table: 94
Average AfriNIC Region AS path length visible: 5.2
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: 22675456
Equivalent to 1 /8s, 90 /16s and 0 /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 2414 9509 897 Korea Telecom (KIX)
7545 1551 301 84 TPG Internet Pty Ltd
4755 1481 653 159 TATA Communications formerly
17974 1446 480 33 PT TELEKOMUNIKASI INDONESIA
24560 1134 322 204 Bharti Airtel Ltd., Telemedia
9583 1055 77 493 Sify Limited
4808 1026 2096 294 CNCGROUP IP network: China169
9829 1004 868 53 BSNL National Internet Backbo
18101 938 116 142 Reliance Infocom Ltd Internet
17488 936 162 96 Hathway IP Over Cable Interne
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 3673 3838 258 bellsouth.net, inc.
4323 2566 1093 401 Time Warner Telecom
1785 1786 681 131 PaeTec Communications, Inc.
18566 1606 331 195 Covad Communications
6478 1572 302 37 AT&T Worldnet Services
20115 1531 1541 648 Charter Communications
19262 1487 4935 303 Verizon Global Networks
7018 1360 6675 886 AT&T WorldNet Services
11492 1326 240 15 Cable One
22773 1285 2865 79 Cox Communications, Inc.
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 515 1780 318 UPC Distribution Services
3292 454 2013 391 TDC Tele Danmark
34984 454 95 205 BILISIM TELEKOM
8866 443 133 24 Bulgarian Telecommunication C
9198 422 267 15 Kazakhtelecom Data Network Ad
3320 412 7604 359 Deutsche Telekom AG
20940 411 98 317 Akamai Technologies European
8551 403 353 46 Bezeq International
12479 396 577 6 Uni2 Autonomous System
702 393 1800 307 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 1403 262 152 TVCABLE BOGOTA
28573 1250 970 83 NET Servicos de Comunicao S.A
8151 1245 2673 367 UniNet S.A. de C.V.
6503 1224 354 73 AVANTEL, S.A.
7303 922 465 148 Telecom Argentina Stet-France
14420 638 52 91 CORPORACION NACIONAL DE TELEC
22047 567 310 15 VTR PUNTO NET S.A.
3816 515 225 98 Empresa Nacional de Telecomun
13489 493 217 107 Orbitel S.A. E.S.P.
11172 486 83 79 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
8452 847 445 11 TEDATA
24863 774 147 39 LINKdotNET AS number
15475 421 90 8 Nile Online
36992 298 271 14 Etisalat MISR
3741 265 985 227 The Internet Solution
24835 232 78 10 RAYA Telecom - Egypt
33776 230 13 5 Starcomms Nigeria Limited
6713 214 199 11 Itissalat Al-MAGHRIB
29571 192 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 3673 3838 258 bellsouth.net, inc.
4323 2566 1093 401 Time Warner Telecom
4766 2414 9509 897 Korea Telecom (KIX)
23456 2020 490 1097 32-bit ASN transition
1785 1786 681 131 PaeTec Communications, Inc.
18566 1606 331 195 Covad Communications
6478 1572 302 37 AT&T Worldnet Services
7545 1551 301 84 TPG Internet Pty Ltd
20115 1531 1541 648 Charter Communications
19262 1487 4935 303 Verizon Global Networks
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 2566 2165 Time Warner Telecom
1785 1786 1655 PaeTec Communications, Inc.
6478 1572 1535 AT&T Worldnet Services
4766 2414 1517 Korea Telecom (KIX)
7545 1551 1467 TPG Internet Pty Ltd
17974 1446 1413 PT TELEKOMUNIKASI INDONESIA
18566 1606 1411 Covad Communications
4755 1481 1322 TATA Communications formerly
11492 1326 1311 Cable One
10620 1403 1251 TVCABLE BOGOTA
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
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
25639 UNALLOCATED 12.41.169.0/24 7018 AT&T WorldNet Servic
13317 UNALLOCATED 12.44.10.0/24 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
41.57.192.0/18 22750 BCSNET
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
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 /9:11 /10:26 /11:74 /12:218
/13:448 /14:766 /15:1370 /16:11585 /17:5704 /18:9427
/19:19082 /20:24750 /21:25249 /22:33617 /23:32190 /24:183725
/25:1139 /26:1274 /27:710 /28:40 /29:9 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2267 3673 bellsouth.net, inc.
18566 1585 1606 Covad Communications
6478 1526 1572 AT&T Worldnet Services
4323 1377 2566 Time Warner Telecom
10620 1293 1403 TVCABLE BOGOTA
11492 1274 1326 Cable One
23456 1095 2020 32-bit ASN transition
7011 1063 1164 Citizens Utilities
1785 1056 1786 PaeTec Communications, Inc.
6503 1000 1224 AVANTEL, S.A.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:289 2:53 4:14 5:1 8:346 12:2019
13:1 14:428 15:15 16:3 17:8 20:9
23:3 24:1570 27:698 31:14 32:60 33:3
34:2 37:1 38:748 39:1 40:101 41:2374
44:3 46:751 47:4 49:146 50:124 52:13
55:4 56:2 57:30 58:817 59:499 60:387
61:1167 62:1003 63:1918 64:3881 65:2356 66:4369
67:1805 68:1061 69:2912 70:701 71:359 72:1897
73:1 74:2329 75:284 76:338 77:851 78:696
79:457 80:1090 81:823 82:512 83:463 84:647
85:1030 86:553 87:759 88:343 89:1565 90:176
91:3657 92:504 93:1044 94:1229 95:777 96:452
97:252 98:811 99:35 101:49 106:1 107:4
108:48 109:926 110:517 111:677 112:325 113:383
114:510 115:719 116:971 117:672 118:760 119:1090
120:282 121:760 122:1611 123:1060 124:1320 125:1257
128:265 129:172 130:173 131:565 132:109 133:20
134:216 135:49 136:213 137:142 138:299 139:112
140:485 141:173 142:380 143:391 144:478 145:52
146:431 147:190 148:631 149:261 150:167 151:187
152:298 153:180 154:3 155:390 156:185 157:347
158:131 159:379 160:315 161:208 162:278 163:165
164:493 165:350 166:501 167:411 168:721 169:155
170:778 171:70 172:2 173:1256 174:532 175:350
177:74 178:757 180:791 181:4 182:410 183:192
184:232 185:1 186:1115 187:899 188:917 189:1031
190:4762 192:5770 193:4791 194:3490 195:2937 196:1215
197:15 198:3589 199:3878 200:5582 201:1588 202:8394
203:8460 204:4113 205:2310 206:2643 207:3026 208:3905
209:3495 210:2724 211:1364 212:1950 213:1711 214:756
215:66 216:4879 217:1620 218:556 219:382 220:1192
221:476 222:311 223:103
End of report
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