Routing Table Report 04:00 +10GMT Thu 26 May, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 357978
Prefixes after maximum aggregation: 161887
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 176931
Total ASes present in the Internet Routing Table: 37667
Prefixes per ASN: 9.50
Origin-only ASes present in the Internet Routing Table: 31474
Origin ASes announcing only one prefix: 15101
Transit ASes present in the Internet Routing Table: 5099
Transit-only ASes present in the Internet Routing Table: 138
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: 680
Unregistered ASNs in the Routing Table: 359
Number of 32-bit ASNs allocated by the RIRs: 1377
Number of 32-bit ASNs visible in the Routing Table: 1094
Prefixes from 32-bit ASNs in the Routing Table: 2483
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 167
Number of addresses announced to Internet: 2436979648
Equivalent to 145 /8s, 65 /16s and 91 /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: 148984
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 89250
Total APNIC prefixes after maximum aggregation: 30026
APNIC Deaggregation factor: 2.97
Prefixes being announced from the APNIC address blocks: 85691
Unique aggregates announced from the APNIC address blocks: 36673
APNIC Region origin ASes present in the Internet Routing Table: 4460
APNIC Prefixes per ASN: 19.21
APNIC Region origin ASes announcing only one prefix: 1241
APNIC Region transit ASes present in the Internet Routing Table: 698
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 20
Number of APNIC region 32-bit ASNs visible in the Routing Table: 47
Number of APNIC addresses announced to Internet: 616633888
Equivalent to 36 /8s, 193 /16s and 22 /24s
Percentage of available APNIC address space announced: 78.2
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: 140498
Total ARIN prefixes after maximum aggregation: 71373
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 112721
Unique aggregates announced from the ARIN address blocks: 45737
ARIN Region origin ASes present in the Internet Routing Table: 14391
ARIN Prefixes per ASN: 7.83
ARIN Region origin ASes announcing only one prefix: 5481
ARIN Region transit ASes present in the Internet Routing Table: 1507
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: 11
Number of ARIN addresses announced to Internet: 801874688
Equivalent to 47 /8s, 203 /16s and 163 /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: 84705
Total RIPE prefixes after maximum aggregation: 48290
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 78134
Unique aggregates announced from the RIPE address blocks: 51739
RIPE Region origin ASes present in the Internet Routing Table: 15621
RIPE Prefixes per ASN: 5.00
RIPE Region origin ASes announcing only one prefix: 7812
RIPE Region transit ASes present in the Internet Routing Table: 2464
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: 473988608
Equivalent to 28 /8s, 64 /16s and 126 /24s
Percentage of available RIPE address space announced: 76.4
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: 32814
Total LACNIC prefixes after maximum aggregation: 7500
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 31870
Unique aggregates announced from the LACNIC address blocks: 16702
LACNIC Region origin ASes present in the Internet Routing Table: 1457
LACNIC Prefixes per ASN: 21.87
LACNIC Region origin ASes announcing only one prefix: 429
LACNIC Region transit ASes present in the Internet Routing Table: 266
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: 218
Number of LACNIC addresses announced to Internet: 83816448
Equivalent to 4 /8s, 254 /16s and 240 /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: 8009
Total AfriNIC prefixes after maximum aggregation: 1892
AfriNIC Deaggregation factor: 4.23
Prefixes being announced from the AfriNIC address blocks: 6335
Unique aggregates announced from the AfriNIC address blocks: 1906
AfriNIC Region origin ASes present in the Internet Routing Table: 454
AfriNIC Prefixes per ASN: 13.95
AfriNIC Region origin ASes announcing only one prefix: 138
AfriNIC Region transit ASes present in the Internet Routing Table: 100
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: 23217920
Equivalent to 1 /8s, 98 /16s and 71 /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 2461 9500 922 Korea Telecom (KIX)
17974 1842 516 32 PT TELEKOMUNIKASI INDONESIA
7545 1538 301 87 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 1040 875 51 BSNL National Internet Backbo
18101 932 116 140 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 1975 1081 399 Time Warner Telecom
18566 1871 355 268 Covad Communications
1785 1787 681 123 PaeTec Communications, Inc.
6478 1702 316 48 AT&T Worldnet Services
20115 1534 1540 632 Charter Communications
19262 1490 4935 308 Verizon Global Networks
7018 1364 7068 888 AT&T WorldNet Services
22773 1333 2897 88 Cox Communications, Inc.
11492 1280 240 15 Cable One
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 319 UPC Distribution Services
34984 517 106 180 BILISIM TELEKOM
3292 461 2062 396 TDC Tele Danmark
20940 456 133 350 Akamai Technologies European
29049 456 33 45 AzerSat LLC.
8866 444 134 26 Bulgarian Telecommunication C
12479 430 577 6 Uni2 Autonomous System
3320 425 8152 370 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 1492 274 156 TVCABLE BOGOTA
8151 1374 2704 362 UniNet S.A. de C.V.
28573 1321 991 87 NET Servicos de Comunicao S.A
7303 925 472 150 Telecom Argentina Stet-France
6503 731 354 73 AVANTEL, S.A.
14420 670 54 91 CORPORACION NACIONAL DE TELEC
22047 565 310 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 878 445 11 TEDATA
24863 787 147 37 LINKdotNET AS number
15475 543 90 8 Nile Online
36992 290 315 18 Etisalat MISR
3741 266 985 228 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
33776 211 12 15 Starcomms Nigeria Limited
24835 206 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 2483 627 1354 32-bit ASN transition
4766 2461 9500 922 Korea Telecom (KIX)
4323 1975 1081 399 Time Warner Telecom
18566 1871 355 268 Covad Communications
17974 1842 516 32 PT TELEKOMUNIKASI INDONESIA
1785 1787 681 123 PaeTec Communications, Inc.
6478 1702 316 48 AT&T Worldnet Services
7545 1538 301 87 TPG Internet Pty Ltd
20115 1534 1540 632 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 1842 1810 PT TELEKOMUNIKASI INDONESIA
1785 1787 1664 PaeTec Communications, Inc.
6478 1702 1654 AT&T Worldnet Services
18566 1871 1603 Covad Communications
4323 1975 1576 Time Warner Telecom
4766 2461 1539 Korea Telecom (KIX)
7545 1538 1451 TPG Internet Pty Ltd
10620 1492 1336 TVCABLE BOGOTA
4755 1470 1304 TATA Communications formerly
11492 1280 1265 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 /12:228
/13:461 /14:794 /15:1394 /16:11776 /17:5828 /18:9764
/19:19310 /20:25692 /21:25923 /22:34018 /23:33060 /24:186341
/25:1085 /26:1273 /27:713 /28:163 /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 1835 1871 Covad Communications
6478 1656 1702 AT&T Worldnet Services
10620 1382 1492 TVCABLE BOGOTA
11492 1226 1280 Cable One
23456 1206 2483 32-bit ASN transition
7011 1061 1160 Citizens Utilities
1785 1051 1787 PaeTec Communications, Inc.
4323 884 1975 Time Warner Telecom
22773 848 1333 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:280 2:51 4:16 5:1 6:3 8:353
12:1980 13:1 14:462 15:15 16:3 17:8
20:10 23:7 24:1616 27:773 31:351 32:60
33:4 34:2 37:1 38:739 40:101 41:2517
42:5 44:3 46:926 47:3 49:195 50:421
52:13 54:2 55:4 56:2 57:30 58:847
59:483 60:387 61:1238 62:1042 63:1938 64:3954
65:2288 66:4144 67:1865 68:1086 69:2986 70:703
71:352 72:1882 73:1 74:2355 75:301 76:341
77:871 78:704 79:463 80:1095 81:823 82:494
83:437 84:677 85:1061 86:586 87:758 88:330
89:1532 90:203 91:3783 92:517 93:1052 94:1285
95:798 96:506 97:249 98:851 99:35 101:59
103:18 106:1 107:7 108:85 109:944 110:600
111:714 112:307 113:400 114:535 115:670 116:952
117:695 118:826 119:1142 120:306 121:671 122:1624
123:997 124:1266 125:1230 128:262 129:172 130:163
131:574 132:109 133:19 134:213 135:48 136:215
137:144 138:300 139:112 140:483 141:238 142:402
143:400 144:484 145:54 146:446 147:212 148:590
149:244 150:170 151:186 152:324 153:178 154:3
155:396 156:194 157:352 158:135 159:388 160:317
161:207 162:282 163:163 164:504 165:354 166:514
167:426 168:732 169:153 170:797 171:77 172:1
173:1559 174:549 175:372 176:1 177:133 178:993
180:849 181:17 182:449 183:206 184:283 185:1
186:1170 187:743 188:841 189:899 190:4816 192:5798
193:4848 194:3480 195:2987 196:1219 197:18 198:3573
199:3914 200:5465 201:1484 202:8387 203:8381 204:4174
205:2323 206:2707 207:2912 208:3967 209:3462 210:2736
211:1395 212:1992 213:1732 214:738 215:72 216:4905
217:1633 218:566 219:363 220:1202 221:491 222:340
223:149
End of report
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