Routing Table Report 04:00 +10GMT Wed 23 Mar, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 350252
Prefixes after maximum aggregation: 159173
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 173316
Total ASes present in the Internet Routing Table: 37035
Prefixes per ASN: 9.46
Origin-only ASes present in the Internet Routing Table: 31143
Origin ASes announcing only one prefix: 14983
Transit ASes present in the Internet Routing Table: 4976
Transit-only ASes present in the Internet Routing Table: 126
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: 432
Unregistered ASNs in the Routing Table: 207
Number of 32-bit ASNs allocated by the RIRs: 1213
Number of 32-bit ASNs visible in the Routing Table: 916
Prefixes from 32-bit ASNs in the Routing Table: 1958
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 202
Number of addresses announced to Internet: 2388985664
Equivalent to 142 /8s, 101 /16s and 7 /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: 89.6
Total number of prefixes smaller than registry allocations: 144759
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87587
Total APNIC prefixes after maximum aggregation: 29807
APNIC Deaggregation factor: 2.94
Prefixes being announced from the APNIC address blocks: 84466
Unique aggregates announced from the APNIC address blocks: 36571
APNIC Region origin ASes present in the Internet Routing Table: 4365
APNIC Prefixes per ASN: 19.35
APNIC Region origin ASes announcing only one prefix: 1212
APNIC Region transit ASes present in the Internet Routing Table: 690
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 19
Number of APNIC region 32-bit ASNs visible in the Routing Table: 46
Number of APNIC addresses announced to Internet: 600028736
Equivalent to 35 /8s, 195 /16s and 182 /24s
Percentage of available APNIC address space announced: 76.1
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: 138486
Total ARIN prefixes after maximum aggregation: 70784
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 110873
Unique aggregates announced from the ARIN address blocks: 45085
ARIN Region origin ASes present in the Internet Routing Table: 14275
ARIN Prefixes per ASN: 7.77
ARIN Region origin ASes announcing only one prefix: 5433
ARIN Region transit ASes present in the Internet Routing Table: 1475
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: 797028864
Equivalent to 47 /8s, 129 /16s and 178 /24s
Percentage of available ARIN address space announced: 63.3
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: 82801
Total RIPE prefixes after maximum aggregation: 47201
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 76150
Unique aggregates announced from the RIPE address blocks: 49888
RIPE Region origin ASes present in the Internet Routing Table: 15432
RIPE Prefixes per ASN: 4.93
RIPE Region origin ASes announcing only one prefix: 7776
RIPE Region transit ASes present in the Internet Routing Table: 2401
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 23
Number of RIPE region 32-bit ASNs visible in the Routing Table: 679
Number of RIPE addresses announced to Internet: 464713216
Equivalent to 27 /8s, 178 /16s and 246 /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: 31724
Total LACNIC prefixes after maximum aggregation: 7327
LACNIC Deaggregation factor: 4.33
Prefixes being announced from the LACNIC address blocks: 30676
Unique aggregates announced from the LACNIC address blocks: 16126
LACNIC Region origin ASes present in the Internet Routing Table: 1431
LACNIC Prefixes per ASN: 21.44
LACNIC Region origin ASes announcing only one prefix: 434
LACNIC Region transit ASes present in the Internet Routing Table: 260
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 18
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 177
Number of LACNIC addresses announced to Internet: 81394048
Equivalent to 4 /8s, 217 /16s and 249 /24s
Percentage of available LACNIC address space announced: 53.9
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: 7489
Total AfriNIC prefixes after maximum aggregation: 1797
AfriNIC Deaggregation factor: 4.17
Prefixes being announced from the AfriNIC address blocks: 5902
Unique aggregates announced from the AfriNIC address blocks: 1799
AfriNIC Region origin ASes present in the Internet Routing Table: 435
AfriNIC Prefixes per ASN: 13.57
AfriNIC Region origin ASes announcing only one prefix: 128
AfriNIC Region transit ASes present in the Internet Routing Table: 94
Average AfriNIC Region AS path length visible: 5.4
Max AfriNIC Region AS path length visible: 31
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 4
Number of AfriNIC addresses announced to Internet: 22138880
Equivalent to 1 /8s, 81 /16s and 208 /24s
Percentage of available AfriNIC address space announced: 33.0
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 2425 9508 895 Korea Telecom (KIX)
7545 1566 301 82 TPG Internet Pty Ltd
4755 1483 653 159 TATA Communications formerly
17974 1446 480 34 PT TELEKOMUNIKASI INDONESIA
24560 1130 321 203 Bharti Airtel Ltd., Telemedia
9583 1055 77 492 Sify Limited
4808 1010 2092 287 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 3674 3838 257 bellsouth.net, inc.
4323 2570 1093 403 Time Warner Telecom
1785 1790 681 130 PaeTec Communications, Inc.
18566 1607 331 195 Covad Communications
6478 1561 301 34 AT&T Worldnet Services
20115 1527 1536 645 Charter Communications
19262 1487 4935 303 Verizon Global Networks
7018 1361 6691 887 AT&T WorldNet Services
11492 1318 236 64 Cable One
22773 1287 2865 80 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
9198 472 267 15 Kazakhtelecom Data Network Ad
34984 455 95 205 BILISIM TELEKOM
3292 454 2013 391 TDC Tele Danmark
8866 443 133 24 Bulgarian Telecommunication C
20940 414 99 317 Akamai Technologies European
3320 409 7604 356 Deutsche Telekom AG
8551 403 353 46 Bezeq International
8402 402 320 11 Corbina telecom
12479 396 577 6 Uni2 Autonomous System
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 1394 260 159 TVCABLE BOGOTA
28573 1250 969 83 NET Servicos de Comunicao S.A
8151 1239 2684 373 UniNet S.A. de C.V.
6503 1175 354 73 AVANTEL, S.A.
7303 924 465 147 Telecom Argentina Stet-France
14420 638 52 91 CORPORACION NACIONAL DE TELEC
22047 545 310 15 VTR PUNTO NET S.A.
3816 515 225 97 Empresa Nacional de Telecomun
13489 491 213 106 Orbitel S.A. E.S.P.
11172 487 99 81 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 799 445 11 TEDATA
24863 773 147 39 LINKdotNET AS number
15475 421 90 8 Nile Online
36992 298 271 14 Etisalat MISR
3741 265 985 227 The Internet Solution
33776 230 13 5 Starcomms Nigeria Limited
24835 220 78 10 RAYA Telecom - Egypt
6713 213 199 11 Itissalat Al-MAGHRIB
29571 192 17 11 Ci Telecom Autonomous system
16637 149 441 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 3674 3838 257 bellsouth.net, inc.
4323 2570 1093 403 Time Warner Telecom
4766 2425 9508 895 Korea Telecom (KIX)
23456 1958 484 1080 32-bit ASN transition
1785 1790 681 130 PaeTec Communications, Inc.
18566 1607 331 195 Covad Communications
7545 1566 301 82 TPG Internet Pty Ltd
6478 1561 301 34 AT&T Worldnet Services
20115 1527 1536 645 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 2570 2167 Time Warner Telecom
1785 1790 1660 PaeTec Communications, Inc.
4766 2425 1530 Korea Telecom (KIX)
6478 1561 1527 AT&T Worldnet Services
7545 1566 1484 TPG Internet Pty Ltd
18566 1607 1412 Covad Communications
17974 1446 1412 PT TELEKOMUNIKASI INDONESIA
4755 1483 1324 TATA Communications formerly
11492 1318 1254 Cable One
10620 1394 1235 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
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
23502 UNALLOCATED 12.44.44.0/24 7018 AT&T WorldNet Servic
Complete listing at http://thyme.rand.apnic.net/current/data-badAS
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
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
31.31.168.0/21 5567 Tomsk Polytechnic University
31.31.208.0/21 9188 infoServe GmbH
31.47.0.0/20 25144 Telekom Srpske
31.47.16.0/22 25144 Telekom Srpske
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 /12:217
/13:447 /14:766 /15:1371 /16:11571 /17:5691 /18:9408
/19:19054 /20:24687 /21:25148 /22:33546 /23:32062 /24:182979
/25:1128 /26:1285 /27:705 /28:40 /29:9 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2268 3674 bellsouth.net, inc.
18566 1586 1607 Covad Communications
6478 1515 1561 AT&T Worldnet Services
4323 1380 2570 Time Warner Telecom
10620 1285 1394 TVCABLE BOGOTA
11492 1273 1318 Cable One
23456 1069 1958 32-bit ASN transition
7011 1062 1163 Citizens Utilities
1785 1055 1790 PaeTec Communications, Inc.
6503 955 1175 AVANTEL, S.A.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:285 2:57 4:14 5:1 8:343 12:2024
13:1 14:426 15:15 16:3 17:8 20:9
23:3 24:1569 27:686 31:6 32:60 33:3
34:2 37:1 38:747 39:1 40:101 41:2278
44:3 46:739 47:4 49:165 50:111 52:13
55:2 56:2 57:32 58:870 59:495 60:386
61:1160 62:1003 63:1920 64:3838 65:2356 66:4366
67:1784 68:1078 69:2885 70:699 71:359 72:1898
73:1 74:2323 75:284 76:343 77:846 78:696
79:454 80:1089 81:805 82:511 83:456 84:646
85:1029 86:528 87:759 88:353 89:1552 90:174
91:3642 92:507 93:1042 94:1232 95:784 96:448
97:252 98:809 99:34 101:49 106:1 107:4
108:72 109:916 110:517 111:704 112:325 113:378
114:505 115:712 116:964 117:674 118:724 119:1093
120:272 121:766 122:1614 123:1044 124:1319 125:1248
128:265 129:170 130:172 131:565 132:100 133:20
134:215 135:49 136:205 137:146 138:298 139:113
140:484 141:173 142:378 143:390 144:479 145:52
146:440 147:192 148:618 149:275 150:161 151:187
152:298 153:180 154:3 155:385 156:184 157:346
158:132 159:372 160:313 161:207 162:278 163:165
164:493 165:351 166:499 167:413 168:721 169:156
170:781 171:69 172:2 173:1256 174:523 175:335
177:46 178:817 180:788 181:4 182:402 183:242
184:227 185:1 186:998 187:870 188:914 189:1014
190:4658 192:5765 193:4784 194:3494 195:2943 196:1171
197:15 198:3565 199:3884 200:5468 201:1539 202:8385
203:8474 204:4114 205:2315 206:2648 207:3026 208:3905
209:3483 210:2695 211:1359 212:1951 213:1714 214:758
215:66 216:4881 217:1642 218:555 219:382 220:1198
221:478 222:321 223:100
End of report
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