Routing Table Report 04:00 +10GMT Wed 25 May, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 357690
Prefixes after maximum aggregation: 161891
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 176970
Total ASes present in the Internet Routing Table: 37649
Prefixes per ASN: 9.50
Origin-only ASes present in the Internet Routing Table: 31451
Origin ASes announcing only one prefix: 15092
Transit ASes present in the Internet Routing Table: 5099
Transit-only ASes present in the Internet Routing Table: 137
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 36
Max AS path prepend of ASN (48687) 24
Prefixes from unregistered ASNs in the Routing Table: 675
Unregistered ASNs in the Routing Table: 354
Number of 32-bit ASNs allocated by the RIRs: 1371
Number of 32-bit ASNs visible in the Routing Table: 1099
Prefixes from 32-bit ASNs in the Routing Table: 2491
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 168
Number of addresses announced to Internet: 2434290368
Equivalent to 145 /8s, 24 /16s and 82 /24s
Percentage of available address space announced: 65.7
Percentage of allocated address space announced: 65.7
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.9
Total number of prefixes smaller than registry allocations: 148579
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 89443
Total APNIC prefixes after maximum aggregation: 30060
APNIC Deaggregation factor: 2.98
Prefixes being announced from the APNIC address blocks: 85879
Unique aggregates announced from the APNIC address blocks: 36746
APNIC Region origin ASes present in the Internet Routing Table: 4456
APNIC Prefixes per ASN: 19.27
APNIC Region origin ASes announcing only one prefix: 1239
APNIC Region transit ASes present in the Internet Routing Table: 699
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 19
Number of APNIC region 32-bit ASNs visible in the Routing Table: 47
Number of APNIC addresses announced to Internet: 615529248
Equivalent to 36 /8s, 176 /16s and 59 /24s
Percentage of available APNIC address space announced: 78.1
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: 140304
Total ARIN prefixes after maximum aggregation: 71342
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 112560
Unique aggregates announced from the ARIN address blocks: 45661
ARIN Region origin ASes present in the Internet Routing Table: 14379
ARIN Prefixes per ASN: 7.83
ARIN Region origin ASes announcing only one prefix: 5477
ARIN Region transit ASes present in the Internet Routing Table: 1511
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: 12
Number of ARIN addresses announced to Internet: 801690624
Equivalent to 47 /8s, 200 /16s and 212 /24s
Percentage of available ARIN address space announced: 63.7
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: 84570
Total RIPE prefixes after maximum aggregation: 48303
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 78016
Unique aggregates announced from the RIPE address blocks: 51697
RIPE Region origin ASes present in the Internet Routing Table: 15621
RIPE Prefixes per ASN: 4.99
RIPE Region origin ASes announcing only one prefix: 7814
RIPE Region transit ASes present in the Internet Routing Table: 2461
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 36
Number of RIPE region 32-bit ASNs visible in the Routing Table: 813
Number of RIPE addresses announced to Internet: 473703424
Equivalent to 28 /8s, 60 /16s and 36 /24s
Percentage of available RIPE address space announced: 76.3
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: 32787
Total LACNIC prefixes after maximum aggregation: 7495
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31842
Unique aggregates announced from the LACNIC address blocks: 16769
LACNIC Region origin ASes present in the Internet Routing Table: 1455
LACNIC Prefixes per ASN: 21.88
LACNIC Region origin ASes announcing only one prefix: 426
LACNIC Region transit ASes present in the Internet Routing Table: 265
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: 222
Number of LACNIC addresses announced to Internet: 83825408
Equivalent to 4 /8s, 255 /16s and 19 /24s
Percentage of available LACNIC address space announced: 55.5
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: 7878
Total AfriNIC prefixes after maximum aggregation: 1877
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 6215
Unique aggregates announced from the AfriNIC address blocks: 1915
AfriNIC Region origin ASes present in the Internet Routing Table: 451
AfriNIC Prefixes per ASN: 13.78
AfriNIC Region origin ASes announcing only one prefix: 136
AfriNIC Region transit ASes present in the Internet Routing Table: 98
Average AfriNIC Region AS path length visible: 4.8
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23213568
Equivalent to 1 /8s, 98 /16s and 54 /24s
Percentage of available AfriNIC address space announced: 34.6
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 2466 9500 922 Korea Telecom (KIX)
17974 1841 516 32 PT TELEKOMUNIKASI INDONESIA
7545 1555 301 86 TPG Internet Pty Ltd
4755 1470 634 166 TATA Communications formerly
24560 1151 336 184 Bharti Airtel Ltd., Telemedia
7552 1140 1064 7 Vietel Corporation
9583 1082 81 511 Sify Limited
4808 1080 2140 298 CNCGROUP IP network: China169
9829 1039 874 51 BSNL National Internet Backbo
18101 933 116 141 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 3644 3822 255 bellsouth.net, inc.
4323 1978 1081 399 Time Warner Telecom
18566 1860 354 267 Covad Communications
1785 1786 681 123 PaeTec Communications, Inc.
6478 1701 316 53 AT&T Worldnet Services
20115 1536 1540 633 Charter Communications
19262 1490 4935 308 Verizon Global Networks
7018 1360 7068 885 AT&T WorldNet Services
22773 1332 2897 88 Cox Communications, Inc.
2386 1269 535 911 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 520 1780 321 UPC Distribution Services
34984 514 106 182 BILISIM TELEKOM
3292 460 2061 395 TDC Tele Danmark
20940 456 133 350 Akamai Technologies European
29049 456 33 45 AzerSat LLC.
8866 444 134 26 Bulgarian Telecommunication C
12479 429 577 6 Uni2 Autonomous System
3320 419 8149 365 Deutsche Telekom AG
8551 406 355 45 Bezeq International
702 395 1802 309 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 1483 273 154 TVCABLE BOGOTA
8151 1377 2704 362 UniNet S.A. de C.V.
28573 1305 991 87 NET Servicos de Comunicao S.A
7303 924 470 150 Telecom Argentina Stet-France
6503 731 354 73 AVANTEL, S.A.
14420 670 54 91 CORPORACION NACIONAL DE TELEC
22047 563 310 15 VTR PUNTO NET S.A.
3816 522 227 101 Empresa Nacional de Telecomun
13489 515 262 121 Orbitel S.A. E.S.P.
11172 495 84 84 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 879 445 11 TEDATA
24863 787 147 37 LINKdotNET AS number
15475 415 90 8 Nile Online
36992 287 315 18 Etisalat MISR
3741 268 985 228 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
33776 217 12 11 Starcomms Nigeria Limited
24835 209 78 10 RAYA Telecom - Egypt
29571 163 19 12 Ci Telecom Autonomous system
16637 150 441 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 3644 3822 255 bellsouth.net, inc.
23456 2491 630 1359 32-bit ASN transition
4766 2466 9500 922 Korea Telecom (KIX)
4323 1978 1081 399 Time Warner Telecom
18566 1860 354 267 Covad Communications
17974 1841 516 32 PT TELEKOMUNIKASI INDONESIA
1785 1786 681 123 PaeTec Communications, Inc.
6478 1701 316 53 AT&T Worldnet Services
7545 1555 301 86 TPG Internet Pty Ltd
20115 1536 1540 633 Charter Communications
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
17974 1841 1809 PT TELEKOMUNIKASI INDONESIA
1785 1786 1663 PaeTec Communications, Inc.
6478 1701 1648 AT&T Worldnet Services
18566 1860 1593 Covad Communications
4323 1978 1579 Time Warner Telecom
4766 2466 1544 Korea Telecom (KIX)
7545 1555 1469 TPG Internet Pty Ltd
10620 1483 1329 TVCABLE BOGOTA
4755 1470 1304 TATA Communications formerly
11492 1265 1250 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
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
27.0.128.0/17 7514 Media Exchange, Inc.
41.190.32.0/23 31856 CABSAS
41.190.34.0/23 31856 CABSAS
41.190.36.0/23 31856 CABSAS
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 /8:20 /9:12 /10:28 /11:79 /12:226
/13:461 /14:794 /15:1393 /16:11769 /17:5816 /18:9752
/19:19291 /20:25658 /21:25879 /22:34169 /23:33085 /24:186000
/25:1087 /26:1273 /27:716 /28:166 /29:8 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2244 3644 bellsouth.net, inc.
18566 1824 1860 Covad Communications
6478 1655 1701 AT&T Worldnet Services
10620 1373 1483 TVCABLE BOGOTA
23456 1213 2491 32-bit ASN transition
11492 1211 1265 Cable One
7011 1061 1160 Citizens Utilities
1785 1051 1786 PaeTec Communications, Inc.
4323 887 1978 Time Warner Telecom
22773 848 1332 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:278 2:49 4:16 5:1 6:3 8:351
12:1986 13:1 14:462 15:15 16:3 17:8
20:10 23:7 24:1607 27:766 31:350 32:60
33:4 34:2 37:1 38:739 40:101 41:2527
42:5 44:3 46:927 47:4 49:199 50:420
52:13 54:2 55:4 56:2 57:30 58:848
59:484 60:387 61:1237 62:965 63:1936 64:3931
65:2282 66:4143 67:1846 68:1093 69:2983 70:703
71:352 72:1881 73:1 74:2351 75:301 76:341
77:871 78:705 79:450 80:1088 81:819 82:494
83:437 84:628 85:1069 86:581 87:751 88:330
89:1532 90:202 91:3777 92:515 93:1053 94:1284
95:802 96:506 97:249 98:838 99:35 101:58
103:17 106:1 107:7 108:85 109:947 110:599
111:714 112:307 113:399 114:534 115:669 116:953
117:696 118:825 119:1136 120:303 121:670 122:1624
123:999 124:1267 125:1233 128:262 129:173 130:163
131:572 132:109 133:19 134:213 135:48 136:215
137:144 138:300 139:112 140:482 141:239 142:403
143:396 144:484 145:54 146:444 147:213 148:586
149:244 150:170 151:186 152:306 153:178 154:3
155:396 156:194 157:352 158:135 159:387 160:317
161:207 162:282 163:163 164:504 165:354 166:514
167:426 168:731 169:153 170:788 171:77 172:1
173:1557 174:552 175:375 176:1 177:138 178:960
180:843 181:17 182:448 183:207 184:279 185:1
186:1139 187:743 188:843 189:897 190:4787 192:5795
193:4857 194:3478 195:2983 196:1226 197:19 198:3573
199:3913 200:5534 201:1482 202:8360 203:8417 204:4173
205:2328 206:2679 207:2888 208:3958 209:3468 210:2737
211:1396 212:1996 213:1727 214:733 215:72 216:4898
217:1633 218:565 219:363 220:1202 221:490 222:340
223:151
End of report
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