Weekly Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri Jul 1 19:05:49 UTC 2011
This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
The posting is sent to APOPS, NANOG, AfNOG, AusNOG, SANOG, PacNOG, LacNOG,
CaribNOG and the RIPE Routing Working Group.
Daily listings are sent to bgp-stats at lists.apnic.net
For historical data, please see http://thyme.rand.apnic.net.
If you have any comments please contact Philip Smith <pfsinoz at gmail.com>.
Routing Table Report 04:00 +10GMT Sat 02 Jul, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 362404
Prefixes after maximum aggregation: 164721
Deaggregation factor: 2.20
Unique aggregates announced to Internet: 179786
Total ASes present in the Internet Routing Table: 38071
Prefixes per ASN: 9.52
Origin-only ASes present in the Internet Routing Table: 31670
Origin ASes announcing only one prefix: 15223
Transit ASes present in the Internet Routing Table: 5179
Transit-only ASes present in the Internet Routing Table: 136
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 33
Max AS path prepend of ASN (22394) 27
Prefixes from unregistered ASNs in the Routing Table: 877
Unregistered ASNs in the Routing Table: 484
Number of 32-bit ASNs allocated by the RIRs: 1514
Number of 32-bit ASNs visible in the Routing Table: 1222
Prefixes from 32-bit ASNs in the Routing Table: 2774
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 134
Number of addresses announced to Internet: 2492654912
Equivalent to 148 /8s, 146 /16s and 229 /24s
Percentage of available address space announced: 67.3
Percentage of allocated address space announced: 67.3
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 91.0
Total number of prefixes smaller than registry allocations: 151058
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 90072
Total APNIC prefixes after maximum aggregation: 30234
APNIC Deaggregation factor: 2.98
Prefixes being announced from the APNIC address blocks: 86827
Unique aggregates announced from the APNIC address blocks: 37040
APNIC Region origin ASes present in the Internet Routing Table: 4494
APNIC Prefixes per ASN: 19.32
APNIC Region origin ASes announcing only one prefix: 1243
APNIC Region transit ASes present in the Internet Routing Table: 708
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 18
Number of APNIC region 32-bit ASNs visible in the Routing Table: 53
Number of APNIC addresses announced to Internet: 621139616
Equivalent to 37 /8s, 5 /16s and 214 /24s
Percentage of available APNIC address space announced: 78.8
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: 141388
Total ARIN prefixes after maximum aggregation: 72780
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 113365
Unique aggregates announced from the ARIN address blocks: 46607
ARIN Region origin ASes present in the Internet Routing Table: 14460
ARIN Prefixes per ASN: 7.84
ARIN Region origin ASes announcing only one prefix: 5524
ARIN Region transit ASes present in the Internet Routing Table: 1519
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 30
Number of ARIN region 32-bit ASNs visible in the Routing Table: 13
Number of ARIN addresses announced to Internet: 819612288
Equivalent to 48 /8s, 218 /16s and 74 /24s
Percentage of available ARIN address space announced: 65.1
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: 86326
Total RIPE prefixes after maximum aggregation: 49069
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 79752
Unique aggregates announced from the RIPE address blocks: 52675
RIPE Region origin ASes present in the Internet Routing Table: 15768
RIPE Prefixes per ASN: 5.06
RIPE Region origin ASes announcing only one prefix: 7871
RIPE Region transit ASes present in the Internet Routing Table: 2503
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 33
Number of RIPE region 32-bit ASNs visible in the Routing Table: 899
Number of RIPE addresses announced to Internet: 478628096
Equivalent to 28 /8s, 135 /16s and 73 /24s
Percentage of available RIPE address space announced: 77.1
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: 33414
Total LACNIC prefixes after maximum aggregation: 7555
LACNIC Deaggregation factor: 4.42
Prefixes being announced from the LACNIC address blocks: 32490
Unique aggregates announced from the LACNIC address blocks: 16972
LACNIC Region origin ASes present in the Internet Routing Table: 1473
LACNIC Prefixes per ASN: 22.06
LACNIC Region origin ASes announcing only one prefix: 440
LACNIC Region transit ASes present in the Internet Routing Table: 272
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: 253
Number of LACNIC addresses announced to Internet: 85702656
Equivalent to 5 /8s, 27 /16s and 184 /24s
Percentage of available LACNIC address space announced: 56.8
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: 8217
Total AfriNIC prefixes after maximum aggregation: 1963
AfriNIC Deaggregation factor: 4.19
Prefixes being announced from the AfriNIC address blocks: 6492
Unique aggregates announced from the AfriNIC address blocks: 1972
AfriNIC Region origin ASes present in the Internet Routing Table: 466
AfriNIC Prefixes per ASN: 13.93
AfriNIC Region origin ASes announcing only one prefix: 145
AfriNIC Region transit ASes present in the Internet Routing Table: 103
Average AfriNIC Region AS path length visible: 4.7
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 4
Number of AfriNIC addresses announced to Internet: 24304128
Equivalent to 1 /8s, 114 /16s and 218 /24s
Percentage of available AfriNIC address space announced: 36.2
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 2460 9500 928 Korea Telecom (KIX)
17974 1835 461 42 PT TELEKOMUNIKASI INDONESIA
7545 1543 301 85 TPG Internet Pty Ltd
4755 1476 627 162 TATA Communications formerly
24560 1153 336 187 Bharti Airtel Ltd., Telemedia
9829 1098 914 45 BSNL National Internet Backbo
9583 1056 78 506 Sify Limited
4808 1050 2091 298 CNCGROUP IP network: China169
17488 960 186 103 Hathway IP Over Cable Interne
18101 932 116 139 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 3619 3819 245 bellsouth.net, inc.
18566 1913 365 241 Covad Communications
1785 1802 681 122 PaeTec Communications, Inc.
4323 1660 1082 399 Time Warner Telecom
20115 1589 1532 635 Charter Communications
19262 1450 4806 370 Verizon Global Networks
7018 1361 7053 887 AT&T WorldNet Services
22773 1347 2897 87 Cox Communications, Inc.
6478 1338 248 613 AT&T Worldnet Services
7029 1285 790 298 Windstream 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
34984 535 106 185 BILISIM TELEKOM
6830 513 1780 318 UPC Distribution Services
3292 469 2080 404 TDC Tele Danmark
20940 467 137 360 Akamai Technologies European
8866 451 134 26 Bulgarian Telecommunication C
29049 440 33 45 AzerSat LLC.
12479 438 593 7 Uni2 Autonomous System
3320 420 8151 367 Deutsche Telekom AG
8551 404 354 44 Bezeq International
702 396 1803 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 1541 282 157 TVCABLE BOGOTA
8151 1424 2742 356 UniNet S.A. de C.V.
28573 1271 996 80 NET Servicos de Comunicao S.A
7303 1000 507 175 Telecom Argentina Stet-France
6503 747 354 74 AVANTEL, S.A.
14420 685 55 81 CORPORACION NACIONAL DE TELEC
22047 576 322 17 VTR PUNTO NET S.A.
3816 535 232 92 Empresa Nacional de Telecomun
7738 516 986 31 Telecomunicacoes da Bahia S.A
27947 505 53 53 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 792 445 11 TEDATA
24863 789 147 37 LINKdotNET AS number
15475 524 74 8 Nile Online
36992 315 415 14 Etisalat MISR
3741 261 937 223 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
24835 211 78 10 RAYA Telecom - Egypt
33776 210 12 8 Starcomms Nigeria Limited
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 3619 3819 245 bellsouth.net, inc.
23456 2774 692 1512 32-bit ASN transition
4766 2460 9500 928 Korea Telecom (KIX)
18566 1913 365 241 Covad Communications
17974 1835 461 42 PT TELEKOMUNIKASI INDONESIA
1785 1802 681 122 PaeTec Communications, Inc.
4323 1660 1082 399 Time Warner Telecom
20115 1589 1532 635 Charter Communications
7545 1543 301 85 TPG Internet Pty Ltd
10620 1541 282 157 TVCABLE BOGOTA
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 1835 1793 PT TELEKOMUNIKASI INDONESIA
1785 1802 1680 PaeTec Communications, Inc.
18566 1913 1672 Covad Communications
4766 2460 1532 Korea Telecom (KIX)
7545 1543 1458 TPG Internet Pty Ltd
10620 1541 1384 TVCABLE BOGOTA
4755 1476 1314 TATA Communications formerly
23456 2774 1262 32-bit ASN transition
4323 1660 1261 Time Warner Telecom
22773 1347 1260 Cox Communications, Inc.
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.
31.135.216.0/21 51388 UAB Marsatas
41.190.32.0/23 31856 CABSAS
41.190.34.0/23 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 /8:22 /9:12 /10:28 /11:81 /12:231
/13:461 /14:801 /15:1396 /16:11983 /17:5875 /18:9808
/19:19455 /20:25864 /21:26151 /22:34633 /23:33577 /24:188712
/25:1089 /26:1268 /27:740 /28:200 /29:9 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2227 3619 bellsouth.net, inc.
18566 1869 1913 Covad Communications
10620 1436 1541 TVCABLE BOGOTA
23456 1369 2774 32-bit ASN transition
6478 1309 1338 AT&T Worldnet Services
11492 1090 1136 Cable One
7011 1055 1156 Citizens Utilities
1785 1052 1802 PaeTec Communications, Inc.
7029 1032 1285 Windstream Communications Inc
22773 862 1347 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:319 2:47 4:16 5:1 6:3 8:337
12:1976 13:1 14:472 15:15 16:3 17:8
20:10 23:13 24:1657 27:788 31:488 32:64
33:4 34:2 36:4 37:1 38:741 39:3
40:103 41:2550 42:23 44:3 46:992 47:3
49:196 50:431 52:13 54:2 55:4 56:2
57:33 58:859 59:476 60:386 61:1173 62:1048
63:1936 64:3947 65:2293 66:3875 67:1900 68:1095
69:3026 70:758 71:389 72:1890 74:2380 75:313
76:341 77:885 78:712 79:461 80:1118 81:844
82:501 83:457 84:686 85:1080 86:552 87:759
88:334 89:1532 90:211 91:3917 92:537 93:1053
94:1319 95:853 96:446 97:254 98:890 99:36
101:77 103:100 106:10 107:19 108:71 109:1019
110:608 111:712 112:304 113:407 114:544 115:669
116:969 117:668 118:854 119:1155 120:308 121:669
122:1612 123:969 124:1298 125:1236 128:246 129:173
130:168 131:564 132:112 133:21 134:213 135:48
136:215 137:136 138:298 139:115 140:474 141:241
142:403 143:416 144:481 145:54 146:448 147:213
148:659 149:247 150:163 151:190 152:330 153:180
154:4 155:399 156:199 157:351 158:138 159:452
160:314 161:211 162:309 163:164 164:510 165:354
166:529 167:432 168:737 169:158 170:847 171:78
172:1 173:1635 174:615 175:377 176:141 177:134
178:990 180:878 181:21 182:485 183:219 184:313
185:1 186:1253 187:733 188:872 189:944 190:4928
192:5894 193:4972 194:3495 195:3027 196:1224 197:41
198:3564 199:3959 200:5519 201:1513 202:8394 203:8418
204:4222 205:2347 206:2678 207:2812 208:3962 209:3460
210:2693 211:1455 212:2103 213:1743 214:770 215:70
216:4929 217:1644 218:544 219:361 220:1204 221:492
222:361 223:180
End of report
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