[SANOG] Weekly Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri Apr 13 18:43:24 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 14 Apr, 2012
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 405834
Prefixes after maximum aggregation: 172344
Deaggregation factor: 2.35
Unique aggregates announced to Internet: 196881
Total ASes present in the Internet Routing Table: 40680
Prefixes per ASN: 9.98
Origin-only ASes present in the Internet Routing Table: 33028
Origin ASes announcing only one prefix: 15596
Transit ASes present in the Internet Routing Table: 5439
Transit-only ASes present in the Internet Routing Table: 140
Average AS path length visible in the Internet Routing Table: 4.5
Max AS path length visible: 69
Max AS path prepend of ASN ( 9902) 61
Prefixes from unregistered ASNs in the Routing Table: 386
Unregistered ASNs in the Routing Table: 124
Number of 32-bit ASNs allocated by the RIRs: 2561
Number of 32-bit ASNs visible in the Routing Table: 2213
Prefixes from 32-bit ASNs in the Routing Table: 5503
Special use prefixes present in the Routing Table: 2
Prefixes being announced from unallocated address space: 114
Number of addresses announced to Internet: 2536440016
Equivalent to 151 /8s, 47 /16s and 0 /24s
Percentage of available address space announced: 68.4
Percentage of allocated address space announced: 68.4
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 92.3
Total number of prefixes smaller than registry allocations: 173014
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 99593
Total APNIC prefixes after maximum aggregation: 32244
APNIC Deaggregation factor: 3.09
Prefixes being announced from the APNIC address blocks: 96034
Unique aggregates announced from the APNIC address blocks: 39546
APNIC Region origin ASes present in the Internet Routing Table: 4672
APNIC Prefixes per ASN: 20.56
APNIC Region origin ASes announcing only one prefix: 1235
APNIC Region transit ASes present in the Internet Routing Table: 729
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: 181
Number of APNIC addresses announced to Internet: 643217632
Equivalent to 38 /8s, 86 /16s and 184 /24s
Percentage of available APNIC address space announced: 81.6
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: 149618
Total ARIN prefixes after maximum aggregation: 76108
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 120921
Unique aggregates announced from the ARIN address blocks: 50252
ARIN Region origin ASes present in the Internet Routing Table: 15025
ARIN Prefixes per ASN: 8.05
ARIN Region origin ASes announcing only one prefix: 5723
ARIN Region transit ASes present in the Internet Routing Table: 1582
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 22
Number of ARIN region 32-bit ASNs visible in the Routing Table: 17
Number of ARIN addresses announced to Internet: 807007168
Equivalent to 48 /8s, 25 /16s and 243 /24s
Percentage of available ARIN address space announced: 64.1
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: 101433
Total RIPE prefixes after maximum aggregation: 53576
RIPE Deaggregation factor: 1.89
Prefixes being announced from the RIPE address blocks: 93324
Unique aggregates announced from the RIPE address blocks: 58041
RIPE Region origin ASes present in the Internet Routing Table: 16482
RIPE Prefixes per ASN: 5.66
RIPE Region origin ASes announcing only one prefix: 8037
RIPE Region transit ASes present in the Internet Routing Table: 2629
Average RIPE Region AS path length visible: 5.0
Max RIPE Region AS path length visible: 30
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1489
Number of RIPE addresses announced to Internet: 509292424
Equivalent to 30 /8s, 91 /16s and 47 /24s
Percentage of available RIPE address space announced: 82.0
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: 40582
Total LACNIC prefixes after maximum aggregation: 8239
LACNIC Deaggregation factor: 4.93
Prefixes being announced from the LACNIC address blocks: 40429
Unique aggregates announced from the LACNIC address blocks: 20124
LACNIC Region origin ASes present in the Internet Routing Table: 1583
LACNIC Prefixes per ASN: 25.54
LACNIC Region origin ASes announcing only one prefix: 435
LACNIC Region transit ASes present in the Internet Routing Table: 296
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 21
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 521
Number of LACNIC addresses announced to Internet: 99314568
Equivalent to 5 /8s, 235 /16s and 107 /24s
Percentage of available LACNIC address space announced: 65.8
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: 8935
Total AfriNIC prefixes after maximum aggregation: 2109
AfriNIC Deaggregation factor: 4.24
Prefixes being announced from the AfriNIC address blocks: 7015
Unique aggregates announced from the AfriNIC address blocks: 2152
AfriNIC Region origin ASes present in the Internet Routing Table: 527
AfriNIC Prefixes per ASN: 13.31
AfriNIC Region origin ASes announcing only one prefix: 166
AfriNIC Region transit ASes present in the Internet Routing Table: 117
Average AfriNIC Region AS path length visible: 4.4
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: 31657216
Equivalent to 1 /8s, 227 /16s and 13 /24s
Percentage of available AfriNIC address space announced: 47.2
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 2488 11113 1009 Korea Telecom (KIX)
17974 1799 503 63 PT TELEKOMUNIKASI INDONESIA
7545 1663 301 86 TPG Internet Pty Ltd
4755 1590 388 166 TATA Communications formerly
9583 1245 95 542 Sify Limited
9829 1235 1041 30 BSNL National Internet Backbo
7552 1170 1062 11 Vietel Corporation
4808 1090 2050 316 CNCGROUP IP network: China169
24560 1023 385 167 Bharti Airtel Ltd., Telemedia
18101 947 131 160 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 3428 3807 195 bellsouth.net, inc.
7029 3385 985 157 Windstream Communications Inc
18566 2091 382 179 Covad Communications
1785 1896 680 129 PaeTec Communications, Inc.
20115 1642 1565 619 Charter Communications
4323 1600 1044 380 Time Warner Telecom
22773 1576 2910 111 Cox Communications, Inc.
30036 1446 263 757 Mediacom Communications Corp
7018 1278 9774 828 AT&T WorldNet Services
11492 1185 216 365 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 1759 544 16 Corbina telecom
2118 1304 97 14 EUnet/RELCOM Autonomous Syste
34984 681 188 175 BILISIM TELEKOM
31148 679 37 9 FreeNet ISP
12479 655 660 61 Uni2 Autonomous System
20940 641 204 494 Akamai Technologies European
6830 639 1943 410 UPC Distribution Services
8551 574 360 81 Bezeq International
3320 533 8442 399 Deutsche Telekom AG
2578 501 33 7 Demos, Moscow, Russia
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 1803 326 174 TVCABLE BOGOTA
28573 1777 1107 59 NET Servicos de Comunicao S.A
6503 1533 418 65 AVANTEL, S.A.
8151 1481 3020 349 UniNet S.A. de C.V.
7303 1357 827 190 Telecom Argentina Stet-France
26615 903 697 32 Tim Brasil S.A.
27947 686 74 99 Telconet S.A
11172 637 91 73 Servicios Alestra S.A de C.V
22047 583 326 15 VTR PUNTO NET S.A.
3816 571 242 100 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 1303 958 13 TEDATA
24863 848 274 35 LINKdotNET AS number
6713 490 649 18 Itissalat Al-MAGHRIB
3741 265 921 223 The Internet Solution
12258 197 28 62 Vodacom Internet Company
33776 195 12 24 Starcomms Nigeria Limited
24835 179 80 8 RAYA Telecom - Egypt
16637 173 666 83 MTN Network Solutions
15706 169 32 6 Sudatel Internet Exchange Aut
29571 161 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 3428 3807 195 bellsouth.net, inc.
7029 3385 985 157 Windstream Communications Inc
4766 2488 11113 1009 Korea Telecom (KIX)
18566 2091 382 179 Covad Communications
1785 1896 680 129 PaeTec Communications, Inc.
10620 1803 326 174 TVCABLE BOGOTA
17974 1799 503 63 PT TELEKOMUNIKASI INDONESIA
28573 1777 1107 59 NET Servicos de Comunicao S.A
8402 1759 544 16 Corbina telecom
7545 1663 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 3385 3228 Windstream Communications Inc
18566 2091 1912 Covad Communications
1785 1896 1767 PaeTec Communications, Inc.
8402 1759 1743 Corbina telecom
17974 1799 1736 PT TELEKOMUNIKASI INDONESIA
28573 1777 1718 NET Servicos de Comunicao S.A
10620 1803 1629 TVCABLE BOGOTA
7545 1663 1577 TPG Internet Pty Ltd
4766 2488 1479 Korea Telecom (KIX)
6503 1533 1468 AVANTEL, S.A.
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
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
27.112.114.0/24 23884 Proimage Engineering and Comm
37.230.96.0/21 35470 XL Network
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 /11:81 /12:235
/13:460 /14:832 /15:1480 /16:12201 /17:6274 /18:10515
/19:20631 /20:28864 /21:29877 /22:40551 /23:37803 /24:212316
/25:1200 /26:1424 /27:777 /28:158 /29:60 /30:17
/31:0 /32:19
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
7029 3043 3385 Windstream Communications Inc
6389 2146 3428 bellsouth.net, inc.
18566 2040 2091 Covad Communications
8402 1736 1759 Corbina telecom
10620 1695 1803 TVCABLE BOGOTA
30036 1392 1446 Mediacom Communications Corp
6503 1291 1533 AVANTEL, S.A.
11492 1148 1185 Cable One
8452 1111 1303 TEDATA
7011 1068 1183 Citizens Utilities
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:532 2:726 4:14 6:3 8:400 12:1990
13:1 14:600 15:12 16:3 17:7 20:8
23:159 24:1769 27:1270 31:978 32:57 33:2
34:2 36:8 37:342 38:795 40:120 41:3147
42:134 44:3 46:1463 47:3 49:383 50:535
52:13 54:7 55:9 56:3 57:31 58:962
59:521 60:282 61:1263 62:977 63:1990 64:4158
65:2253 66:4496 67:2029 68:1152 69:3153 70:906
71:472 72:1819 74:2596 75:494 76:318 77:964
78:1006 79:490 80:1190 81:903 82:661 83:548
84:490 85:1207 86:406 87:925 88:351 89:1631
90:297 91:4723 92:521 93:1389 94:1469 95:1146
96:355 97:318 98:892 99:37 100:7 101:169
103:969 106:105 107:185 108:226 109:1309 110:751
111:920 112:454 113:593 114:623 115:871 116:899
117:717 118:900 119:1217 120:349 121:806 122:1672
123:1089 124:1371 125:1265 128:561 129:190 130:253
131:599 132:173 133:21 134:242 135:62 136:212
137:177 138:355 139:147 140:489 141:244 142:386
143:396 144:514 145:69 146:490 147:277 148:765
149:301 150:160 151:176 152:464 153:172 154:7
155:429 156:215 157:379 158:177 159:522 160:337
161:259 162:352 163:190 164:572 165:395 166:571
167:463 168:816 169:127 170:856 171:127 172:4
173:1727 174:586 175:430 176:484 177:648 178:1333
180:1177 181:73 182:797 183:285 184:452 185:1
186:2209 187:1027 188:1190 189:1798 190:5495 192:5997
193:5545 194:4637 195:3580 196:1247 197:120 198:3624
199:4495 200:5795 201:1917 202:8512 203:8606 204:4343
205:2488 206:2748 207:2777 208:4046 209:3585 210:2761
211:1478 212:2002 213:1906 214:887 215:104 216:5092
217:1539 218:543 219:343 220:1225 221:556 222:323
223:334
End of report
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