[SANOG] Weekly Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri May 4 18:45:36 UTC 2012
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,
TRNOG, 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 05 May, 2012
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 406993
Prefixes after maximum aggregation: 173163
Deaggregation factor: 2.35
Unique aggregates announced to Internet: 198390
Total ASes present in the Internet Routing Table: 40878
Prefixes per ASN: 9.96
Origin-only ASes present in the Internet Routing Table: 33126
Origin ASes announcing only one prefix: 15619
Transit ASes present in the Internet Routing Table: 5471
Transit-only ASes present in the Internet Routing Table: 141
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 64
Max AS path prepend of ASN ( 9902) 56
Prefixes from unregistered ASNs in the Routing Table: 402
Unregistered ASNs in the Routing Table: 131
Number of 32-bit ASNs allocated by the RIRs: 2663
Number of 32-bit ASNs visible in the Routing Table: 2281
Prefixes from 32-bit ASNs in the Routing Table: 5694
Special use prefixes present in the Routing Table: 2
Prefixes being announced from unallocated address space: 114
Number of addresses announced to Internet: 2544196464
Equivalent to 151 /8s, 165 /16s and 91 /24s
Percentage of available address space announced: 68.6
Percentage of allocated address space announced: 68.7
Percentage of available address space allocated: 99.9
Percentage of address space in use by end-sites: 92.5
Total number of prefixes smaller than registry allocations: 174082
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 99714
Total APNIC prefixes after maximum aggregation: 32251
APNIC Deaggregation factor: 3.09
Prefixes being announced from the APNIC address blocks: 96165
Unique aggregates announced from the APNIC address blocks: 39795
APNIC Region origin ASes present in the Internet Routing Table: 4682
APNIC Prefixes per ASN: 20.54
APNIC Region origin ASes announcing only one prefix: 1239
APNIC Region transit ASes present in the Internet Routing Table: 728
Average APNIC Region AS path length visible: 4.7
Max APNIC Region AS path length visible: 20
Number of APNIC region 32-bit ASNs visible in the Routing Table: 197
Number of APNIC addresses announced to Internet: 644332128
Equivalent to 38 /8s, 103 /16s and 186 /24s
Percentage of available APNIC address space announced: 81.7
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 131072-132095, 132096-133119
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: 150460
Total ARIN prefixes after maximum aggregation: 76455
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 121468
Unique aggregates announced from the ARIN address blocks: 50615
ARIN Region origin ASes present in the Internet Routing Table: 15067
ARIN Prefixes per ASN: 8.06
ARIN Region origin ASes announcing only one prefix: 5733
ARIN Region transit ASes present in the Internet Routing Table: 1593
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 24
Number of ARIN region 32-bit ASNs visible in the Routing Table: 17
Number of ARIN addresses announced to Internet: 810105536
Equivalent to 48 /8s, 73 /16s and 58 /24s
Percentage of available ARIN address space announced: 64.6
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: 100875
Total RIPE prefixes after maximum aggregation: 53982
RIPE Deaggregation factor: 1.87
Prefixes being announced from the RIPE address blocks: 92742
Unique aggregates announced from the RIPE address blocks: 58472
RIPE Region origin ASes present in the Internet Routing Table: 16538
RIPE Prefixes per ASN: 5.61
RIPE Region origin ASes announcing only one prefix: 8041
RIPE Region transit ASes present in the Internet Routing Table: 2638
Average RIPE Region AS path length visible: 5.0
Max RIPE Region AS path length visible: 28
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1535
Number of RIPE addresses announced to Internet: 511625288
Equivalent to 30 /8s, 126 /16s and 200 /24s
Percentage of available RIPE address space announced: 82.4
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: 41119
Total LACNIC prefixes after maximum aggregation: 8257
LACNIC Deaggregation factor: 4.98
Prefixes being announced from the LACNIC address blocks: 41000
Unique aggregates announced from the LACNIC address blocks: 20353
LACNIC Region origin ASes present in the Internet Routing Table: 1595
LACNIC Prefixes per ASN: 25.71
LACNIC Region origin ASes announcing only one prefix: 437
LACNIC Region transit ASes present in the Internet Routing Table: 301
Average LACNIC Region AS path length visible: 4.5
Max LACNIC Region AS path length visible: 21
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 527
Number of LACNIC addresses announced to Internet: 100055944
Equivalent to 5 /8s, 246 /16s and 187 /24s
Percentage of available LACNIC address space announced: 66.3
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: 8955
Total AfriNIC prefixes after maximum aggregation: 2151
AfriNIC Deaggregation factor: 4.16
Prefixes being announced from the AfriNIC address blocks: 6977
Unique aggregates announced from the AfriNIC address blocks: 2233
AfriNIC Region origin ASes present in the Internet Routing Table: 536
AfriNIC Prefixes per ASN: 13.02
AfriNIC Region origin ASes announcing only one prefix: 169
AfriNIC Region transit ASes present in the Internet Routing Table: 126
Average AfriNIC Region AS path length visible: 4.6
Max AfriNIC Region AS path length visible: 25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 31795968
Equivalent to 1 /8s, 229 /16s and 43 /24s
Percentage of available AfriNIC address space announced: 47.4
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 2506 11113 1012 Korea Telecom (KIX)
17974 1866 510 73 PT TELEKOMUNIKASI INDONESIA
7545 1678 301 86 TPG Internet Pty Ltd
4755 1575 385 155 TATA Communications formerly
9829 1281 1069 30 BSNL National Internet Backbo
7552 1178 1062 11 Vietel Corporation
9583 1149 85 494 Sify Limited
4808 1110 2050 318 CNCGROUP IP network: China169
24560 1027 385 167 Bharti Airtel Ltd., Telemedia
9498 962 291 65 BHARTI Airtel Ltd.
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 3425 3807 194 bellsouth.net, inc.
7029 3373 986 159 Windstream Communications Inc
18566 2092 382 179 Covad Communications
1785 1895 680 130 PaeTec Communications, Inc.
20115 1640 1566 619 Charter Communications
4323 1606 1044 383 Time Warner Telecom
22773 1591 2911 115 Cox Communications, Inc.
30036 1423 261 761 Mediacom Communications Corp
7018 1247 10038 817 AT&T WorldNet Services
11492 1186 216 364 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
8402 1719 544 16 Corbina telecom
34984 687 188 172 BILISIM TELEKOM
31148 683 37 9 FreeNet ISP
12479 672 669 68 Uni2 Autonomous System
6830 655 2215 426 UPC Distribution Services
20940 642 208 502 Akamai Technologies European
8551 573 360 80 Bezeq International
3320 534 8442 399 Deutsche Telekom AG
2578 500 33 7 Demos, Moscow, Russia
3292 472 2108 406 TDC Tele Danmark
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 1854 332 179 TVCABLE BOGOTA
28573 1825 1130 59 NET Servicos de Comunicao S.A
6503 1525 418 65 AVANTEL, S.A.
8151 1476 2999 340 UniNet S.A. de C.V.
7303 1371 837 188 Telecom Argentina Stet-France
26615 904 761 33 Tim Brasil S.A.
27947 685 74 98 Telconet S.A
11172 643 91 73 Servicios Alestra S.A de C.V
22047 582 326 15 VTR PUNTO NET S.A.
3816 572 242 100 Empresa Nacional de Telecomun
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 1309 958 13 TEDATA
24863 843 274 35 LINKdotNET AS number
6713 493 649 18 Itissalat Al-MAGHRIB
3741 263 921 223 The Internet Solution
12258 197 28 62 Vodacom Internet Company
33776 186 12 21 Starcomms Nigeria Limited
24835 179 80 8 RAYA Telecom - Egypt
15706 169 32 6 Sudatel Internet Exchange Aut
16637 158 666 83 MTN Network Solutions
29571 157 15 16 Ci Telecom Autonomous system
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 3425 3807 194 bellsouth.net, inc.
7029 3373 986 159 Windstream Communications Inc
4766 2506 11113 1012 Korea Telecom (KIX)
18566 2092 382 179 Covad Communications
1785 1895 680 130 PaeTec Communications, Inc.
17974 1866 510 73 PT TELEKOMUNIKASI INDONESIA
10620 1854 332 179 TVCABLE BOGOTA
28573 1825 1130 59 NET Servicos de Comunicao S.A
8402 1719 544 16 Corbina telecom
7545 1678 301 86 TPG Internet Pty Ltd
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
7029 3373 3214 Windstream Communications Inc
18566 2092 1913 Covad Communications
17974 1866 1793 PT TELEKOMUNIKASI INDONESIA
28573 1825 1766 NET Servicos de Comunicao S.A
1785 1895 1765 PaeTec Communications, Inc.
8402 1719 1703 Corbina telecom
10620 1854 1675 TVCABLE BOGOTA
7545 1678 1592 TPG Internet Pty Ltd
4766 2506 1494 Korea Telecom (KIX)
22773 1591 1476 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
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
17300 UNALLOCATED 12.45.103.0/24 7018 AT&T WorldNet Servic
17300 UNALLOCATED 12.45.110.0/24 701 UUNET Technologies,
16476 UNALLOCATED 12.46.27.0/24 7018 AT&T WorldNet Servic
32873 UNALLOCATED 12.46.100.0/23 10912 InterNAP Network Ser
Complete listing at http://thyme.rand.apnic.net/current/data-badAS
Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------
Prefix Origin AS Description
128.0.0.0/21 12654 RIPE NCC RIS Project
128.0.24.0/24 12654 RIPE NCC RIS Project
Complete listing at http://thyme.rand.apnic.net/current/data-dsua
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
5.22.160.0/19 31042 Serbia Broadband Autonomous s
14.192.0.0/22 45464 Room 201, TGU Bldg
14.192.4.0/22 45464 Room 201, TGU Bldg
14.192.8.0/22 45464 Room 201, TGU Bldg
14.192.12.0/22 45464 Room 201, TGU Bldg
14.192.16.0/22 45464 Room 201, TGU Bldg
14.192.20.0/22 45464 Room 201, TGU Bldg
14.192.24.0/22 45464 Room 201, TGU Bldg
14.192.28.0/22 45464 Room 201, TGU Bldg
24.135.0.0/16 31042 Serbia Broadband Autonomous s
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 /9:12 /10:28 /11:82 /12:235
/13:460 /14:831 /15:1494 /16:12241 /17:6244 /18:10575
/19:20631 /20:29133 /21:30148 /22:40724 /23:38145 /24:212321
/25:1192 /26:1428 /27:782 /28:165 /29:67 /30:17
/31:0 /32:19
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
7029 3030 3373 Windstream Communications Inc
6389 2143 3425 bellsouth.net, inc.
18566 2041 2092 Covad Communications
10620 1712 1854 TVCABLE BOGOTA
8402 1697 1719 Corbina telecom
30036 1367 1423 Mediacom Communications Corp
6503 1284 1525 AVANTEL, S.A.
11492 1149 1186 Cable One
8452 1110 1309 TEDATA
7011 1069 1184 Citizens Utilities
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:537 2:651 4:14 6:3 8:406 12:1994
13:1 14:610 15:12 16:3 17:5 20:23
23:164 24:1762 27:1292 31:950 32:57 33:2
34:2 36:8 37:426 38:803 40:120 41:3083
42:135 44:3 46:1419 47:3 49:414 50:548
52:13 54:10 55:12 56:3 57:31 58:958
59:488 60:254 61:1208 62:986 63:2036 64:4166
65:2252 66:4477 67:2037 68:1160 69:3173 70:905
71:485 72:1829 74:2612 75:494 76:317 77:941
78:981 79:490 80:1213 81:907 82:680 83:546
84:483 85:1210 86:417 87:919 88:338 89:1666
90:291 91:4779 92:521 93:1489 94:1507 95:892
96:367 97:316 98:864 99:37 100:7 101:185
103:1037 106:101 107:191 108:276 109:1331 110:759
111:919 112:453 113:601 114:630 115:807 116:925
117:722 118:906 119:1232 120:354 121:691 122:1656
123:1105 124:1383 125:1247 128:560 129:194 130:252
131:623 132:179 133:22 134:245 135:62 136:215
137:173 138:356 139:183 140:494 141:242 142:409
143:429 144:521 145:70 146:500 147:282 148:770
149:306 150:157 151:179 152:466 153:172 154:12
155:400 156:217 157:376 158:175 159:544 160:338
161:260 162:347 163:191 164:581 165:397 166:573
167:465 168:822 169:128 170:860 171:127 172:2
173:1763 174:578 175:431 176:649 177:682 178:1356
180:1213 181:82 182:962 183:292 184:476 185:1
186:2249 187:1070 188:1232 189:1780 190:5536 192:6013
193:5292 194:3959 195:3408 196:1274 197:133 198:3655
199:4583 200:5835 201:1933 202:8549 203:8611 204:4343
205:2504 206:2749 207:2796 208:4045 209:3621 210:2732
211:1479 212:1993 213:1932 214:858 215:103 216:5112
217:1542 218:543 219:319 220:1232 221:557 222:323
223:337
End of report
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