[SANOG] Weekly Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri Apr 27 18:44:27 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 28 Apr, 2012
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 407208
Prefixes after maximum aggregation: 172996
Deaggregation factor: 2.35
Unique aggregates announced to Internet: 198106
Total ASes present in the Internet Routing Table: 40826
Prefixes per ASN: 9.97
Origin-only ASes present in the Internet Routing Table: 33106
Origin ASes announcing only one prefix: 15607
Transit ASes present in the Internet Routing Table: 5451
Transit-only ASes present in the Internet Routing Table: 135
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: 394
Unregistered ASNs in the Routing Table: 128
Number of 32-bit ASNs allocated by the RIRs: 2635
Number of 32-bit ASNs visible in the Routing Table: 2269
Prefixes from 32-bit ASNs in the Routing Table: 5659
Special use prefixes present in the Routing Table: 2
Prefixes being announced from unallocated address space: 110
Number of addresses announced to Internet: 2540346576
Equivalent to 151 /8s, 106 /16s and 156 /24s
Percentage of available address space announced: 68.5
Percentage of allocated address space announced: 68.6
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: 173699
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 99521
Total APNIC prefixes after maximum aggregation: 32245
APNIC Deaggregation factor: 3.09
Prefixes being announced from the APNIC address blocks: 96009
Unique aggregates announced from the APNIC address blocks: 39862
APNIC Region origin ASes present in the Internet Routing Table: 4684
APNIC Prefixes per ASN: 20.50
APNIC Region origin ASes announcing only one prefix: 1238
APNIC Region transit ASes present in the Internet Routing Table: 734
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: 190
Number of APNIC addresses announced to Internet: 644227680
Equivalent to 38 /8s, 102 /16s and 34 /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: 150278
Total ARIN prefixes after maximum aggregation: 76417
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 121331
Unique aggregates announced from the ARIN address blocks: 50436
ARIN Region origin ASes present in the Internet Routing Table: 15053
ARIN Prefixes per ASN: 8.06
ARIN Region origin ASes announcing only one prefix: 5724
ARIN Region transit ASes present in the Internet Routing Table: 1581
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: 17
Number of ARIN addresses announced to Internet: 807268032
Equivalent to 48 /8s, 29 /16s and 238 /24s
Percentage of available ARIN address space announced: 64.4
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: 101788
Total RIPE prefixes after maximum aggregation: 53879
RIPE Deaggregation factor: 1.89
Prefixes being announced from the RIPE address blocks: 93665
Unique aggregates announced from the RIPE address blocks: 58385
RIPE Region origin ASes present in the Internet Routing Table: 16520
RIPE Prefixes per ASN: 5.67
RIPE Region origin ASes announcing only one prefix: 8040
RIPE Region transit ASes present in the Internet Routing Table: 2627
Average RIPE Region AS path length visible: 4.9
Max RIPE Region AS path length visible: 28
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1528
Number of RIPE addresses announced to Internet: 510941832
Equivalent to 30 /8s, 116 /16s and 90 /24s
Percentage of available RIPE address space announced: 82.3
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: 40893
Total LACNIC prefixes after maximum aggregation: 8250
LACNIC Deaggregation factor: 4.96
Prefixes being announced from the LACNIC address blocks: 40763
Unique aggregates announced from the LACNIC address blocks: 20273
LACNIC Region origin ASes present in the Internet Routing Table: 1592
LACNIC Prefixes per ASN: 25.60
LACNIC Region origin ASes announcing only one prefix: 439
LACNIC Region transit ASes present in the Internet Routing Table: 300
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: 529
Number of LACNIC addresses announced to Internet: 99745160
Equivalent to 5 /8s, 241 /16s and 253 /24s
Percentage of available LACNIC address space announced: 66.1
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: 8894
Total AfriNIC prefixes after maximum aggregation: 2137
AfriNIC Deaggregation factor: 4.16
Prefixes being announced from the AfriNIC address blocks: 6962
Unique aggregates announced from the AfriNIC address blocks: 2224
AfriNIC Region origin ASes present in the Internet Routing Table: 534
AfriNIC Prefixes per ASN: 13.04
AfriNIC Region origin ASes announcing only one prefix: 166
AfriNIC Region transit ASes present in the Internet Routing Table: 120
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: 31785728
Equivalent to 1 /8s, 229 /16s and 3 /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 2485 11112 1010 Korea Telecom (KIX)
17974 1822 509 71 PT TELEKOMUNIKASI INDONESIA
7545 1679 301 88 TPG Internet Pty Ltd
4755 1584 386 158 TATA Communications formerly
9829 1261 1069 30 BSNL National Internet Backbo
7552 1169 1062 11 Vietel Corporation
9583 1145 84 490 Sify Limited
4808 1111 2050 319 CNCGROUP IP network: China169
24560 1027 385 167 Bharti Airtel Ltd., Telemedia
9498 954 291 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 3368 986 158 Windstream Communications Inc
18566 2091 382 179 Covad Communications
1785 1906 680 131 PaeTec Communications, Inc.
20115 1639 1566 619 Charter Communications
4323 1599 1044 383 Time Warner Telecom
22773 1580 2910 114 Cox Communications, Inc.
30036 1420 261 768 Mediacom Communications Corp
7018 1249 9774 818 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 1679 544 16 Corbina telecom
2118 1304 97 14 EUnet/RELCOM Autonomous Syste
31148 681 37 9 FreeNet ISP
34984 681 188 173 BILISIM TELEKOM
6830 655 2215 426 UPC Distribution Services
12479 650 668 66 Uni2 Autonomous System
20940 636 206 498 Akamai Technologies European
8551 571 360 80 Bezeq International
3320 531 8441 397 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 1832 329 171 TVCABLE BOGOTA
28573 1804 1114 62 NET Servicos de Comunicao S.A
6503 1533 418 65 AVANTEL, S.A.
8151 1486 3000 345 UniNet S.A. de C.V.
7303 1362 829 187 Telecom Argentina Stet-France
26615 903 761 33 Tim Brasil S.A.
27947 685 74 98 Telconet S.A
11172 639 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 1305 958 13 TEDATA
24863 840 274 35 LINKdotNET AS number
6713 493 649 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 174 666 83 MTN Network Solutions
15706 169 32 6 Sudatel Internet Exchange Aut
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 3368 986 158 Windstream Communications Inc
4766 2485 11112 1010 Korea Telecom (KIX)
18566 2091 382 179 Covad Communications
1785 1906 680 131 PaeTec Communications, Inc.
10620 1832 329 171 TVCABLE BOGOTA
17974 1822 509 71 PT TELEKOMUNIKASI INDONESIA
28573 1804 1114 62 NET Servicos de Comunicao S.A
7545 1679 301 88 TPG Internet Pty Ltd
8402 1679 544 16 Corbina telecom
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 3368 3210 Windstream Communications Inc
18566 2091 1912 Covad Communications
1785 1906 1775 PaeTec Communications, Inc.
17974 1822 1751 PT TELEKOMUNIKASI INDONESIA
28573 1804 1742 NET Servicos de Comunicao S.A
8402 1679 1663 Corbina telecom
10620 1832 1661 TVCABLE BOGOTA
7545 1679 1591 TPG Internet Pty Ltd
4766 2485 1475 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
5.3.0.0/16 41733 JSC "Z-Telecom"
5.8.184.0/21 29286 Skylogic Italia Autonomous Sy
5.16.0.0/14 41733 JSC "Z-Telecom"
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
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 /15:1489 /16:12244 /17:6243 /18:10539
/19:20613 /20:29018 /21:30083 /22:40581 /23:38021 /24:213032
/25:1196 /26:1429 /27:784 /28:166 /29:67 /30:17
/31:0 /32:19
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
7029 3026 3368 Windstream Communications Inc
6389 2143 3425 bellsouth.net, inc.
18566 2040 2091 Covad Communications
10620 1709 1832 TVCABLE BOGOTA
8402 1657 1679 Corbina telecom
30036 1364 1420 Mediacom Communications Corp
6503 1291 1533 AVANTEL, S.A.
11492 1149 1186 Cable One
8452 1105 1305 TEDATA
1785 1072 1906 PaeTec Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:539 2:550 4:14 6:3 8:406 12:1999
13:1 14:611 15:12 16:3 17:5 20:23
23:167 24:1761 27:1273 31:952 32:57 33:2
34:2 36:8 37:421 38:800 40:120 41:3112
42:135 44:3 46:1481 47:3 49:404 50:538
52:13 54:8 55:11 56:3 57:31 58:965
59:520 60:254 61:1277 62:976 63:1990 64:4173
65:2255 66:4486 67:2021 68:1166 69:3189 70:903
71:466 72:1825 74:2602 75:494 76:318 77:941
78:1012 79:487 80:1209 81:902 82:673 83:550
84:482 85:1210 86:412 87:929 88:340 89:1630
90:291 91:4769 92:520 93:1507 94:1510 95:894
96:358 97:315 98:895 99:37 100:7 101:181
103:1030 106:102 107:191 108:268 109:1306 110:746
111:923 112:454 113:600 114:642 115:807 116:929
117:719 118:909 119:1230 120:354 121:692 122:1676
123:1104 124:1364 125:1243 128:562 129:196 130:255
131:626 132:180 133:22 134:242 135:62 136:214
137:177 138:355 139:163 140:492 141:242 142:407
143:392 144:523 145:74 146:495 147:279 148:768
149:306 150:159 151:181 152:464 153:172 154:12
155:399 156:215 157:375 158:179 159:539 160:338
161:262 162:348 163:191 164:580 165:399 166:573
167:468 168:820 169:128 170:859 171:127 172:2
173:1756 174:570 175:437 176:686 177:654 178:1349
180:1192 181:79 182:826 183:289 184:462 185:1
186:2247 187:1056 188:1239 189:1791 190:5513 192:6010
193:5539 194:4658 195:3600 196:1271 197:129 198:3660
199:4543 200:5806 201:1934 202:8518 203:8599 204:4327
205:2498 206:2746 207:2796 208:4057 209:3621 210:2736
211:1478 212:1983 213:1927 214:848 215:104 216:5131
217:1533 218:545 219:318 220:1230 221:558 222:323
223:336
End of report
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