[Sanog] Weekly Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri Mar 9 18:56:26 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 10 Mar, 2012
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 400226
Prefixes after maximum aggregation: 170764
Deaggregation factor: 2.34
Unique aggregates announced to Internet: 194744
Total ASes present in the Internet Routing Table: 40315
Prefixes per ASN: 9.93
Origin-only ASes present in the Internet Routing Table: 32840
Origin ASes announcing only one prefix: 15490
Transit ASes present in the Internet Routing Table: 5414
Transit-only ASes present in the Internet Routing Table: 144
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 33
Max AS path prepend of ASN (48687) 24
Prefixes from unregistered ASNs in the Routing Table: 369
Unregistered ASNs in the Routing Table: 162
Number of 32-bit ASNs allocated by the RIRs: 2313
Number of 32-bit ASNs visible in the Routing Table: 2061
Prefixes from 32-bit ASNs in the Routing Table: 4921
Special use prefixes present in the Routing Table: 2
Prefixes being announced from unallocated address space: 561
Number of addresses announced to Internet: 2525381776
Equivalent to 150 /8s, 134 /16s and 68 /24s
Percentage of available address space announced: 68.1
Percentage of allocated address space announced: 68.1
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 92.1
Total number of prefixes smaller than registry allocations: 170161
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 98128
Total APNIC prefixes after maximum aggregation: 31878
APNIC Deaggregation factor: 3.08
Prefixes being announced from the APNIC address blocks: 94515
Unique aggregates announced from the APNIC address blocks: 39432
APNIC Region origin ASes present in the Internet Routing Table: 4670
APNIC Prefixes per ASN: 20.24
APNIC Region origin ASes announcing only one prefix: 1237
APNIC Region transit ASes present in the Internet Routing Table: 735
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: 164
Number of APNIC addresses announced to Internet: 640794208
Equivalent to 38 /8s, 49 /16s and 190 /24s
Percentage of available APNIC address space announced: 81.3
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: 149018
Total ARIN prefixes after maximum aggregation: 75689
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 120522
Unique aggregates announced from the ARIN address blocks: 49856
ARIN Region origin ASes present in the Internet Routing Table: 14928
ARIN Prefixes per ASN: 8.07
ARIN Region origin ASes announcing only one prefix: 5667
ARIN Region transit ASes present in the Internet Routing Table: 1571
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: 15
Number of ARIN addresses announced to Internet: 806485760
Equivalent to 48 /8s, 17 /16s and 255 /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: 100333
Total RIPE prefixes after maximum aggregation: 52819
RIPE Deaggregation factor: 1.90
Prefixes being announced from the RIPE address blocks: 91871
Unique aggregates announced from the RIPE address blocks: 56921
RIPE Region origin ASes present in the Internet Routing Table: 16335
RIPE Prefixes per ASN: 5.62
RIPE Region origin ASes announcing only one prefix: 7986
RIPE Region transit ASes present in the Internet Routing Table: 2623
Average RIPE Region AS path length visible: 4.7
Max RIPE Region AS path length visible: 33
Number of RIPE region 32-bit ASNs visible in the Routing Table: 1406
Number of RIPE addresses announced to Internet: 501532936
Equivalent to 29 /8s, 228 /16s and 201 /24s
Percentage of available RIPE address space announced: 80.8
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: 38950
Total LACNIC prefixes after maximum aggregation: 8158
LACNIC Deaggregation factor: 4.77
Prefixes being announced from the LACNIC address blocks: 38648
Unique aggregates announced from the LACNIC address blocks: 19684
LACNIC Region origin ASes present in the Internet Routing Table: 1573
LACNIC Prefixes per ASN: 24.57
LACNIC Region origin ASes announcing only one prefix: 434
LACNIC Region transit ASes present in the Internet Routing Table: 285
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 27
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 472
Number of LACNIC addresses announced to Internet: 98090376
Equivalent to 5 /8s, 216 /16s and 189 /24s
Percentage of available LACNIC address space announced: 65.0
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: 8653
Total AfriNIC prefixes after maximum aggregation: 2097
AfriNIC Deaggregation factor: 4.13
Prefixes being announced from the AfriNIC address blocks: 6739
Unique aggregates announced from the AfriNIC address blocks: 2164
AfriNIC Region origin ASes present in the Internet Routing Table: 518
AfriNIC Prefixes per ASN: 13.01
AfriNIC Region origin ASes announcing only one prefix: 166
AfriNIC Region transit ASes present in the Internet Routing Table: 116
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: 4
Number of AfriNIC addresses announced to Internet: 31553792
Equivalent to 1 /8s, 225 /16s and 121 /24s
Percentage of available AfriNIC address space announced: 47.0
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 2494 11109 994 Korea Telecom (KIX)
17974 1735 503 37 PT TELEKOMUNIKASI INDONESIA
7545 1647 303 86 TPG Internet Pty Ltd
4755 1568 386 158 TATA Communications formerly
9583 1236 93 525 Sify Limited
9829 1187 1001 30 BSNL National Internet Backbo
7552 1160 1062 11 Vietel Corporation
4808 1093 2048 311 CNCGROUP IP network: China169
24560 1005 383 166 Bharti Airtel Ltd., Telemedia
18101 949 130 155 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
7029 3418 1014 159 Windstream Communications Inc
6389 3405 3807 198 bellsouth.net, inc.
18566 2091 382 177 Covad Communications
1785 1881 680 128 PaeTec Communications, Inc.
20115 1635 1555 634 Charter Communications
4323 1608 1059 383 Time Warner Telecom
22773 1544 2910 111 Cox Communications, Inc.
30036 1419 259 758 Mediacom Communications Corp
19262 1359 4701 399 Verizon Global Networks
7018 1281 9776 841 AT&T WorldNet Services
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 1777 544 16 Corbina telecom
2118 1421 97 13 EUnet/RELCOM Autonomous Syste
15557 1087 2184 60 LDCOM NETWORKS
34984 658 188 171 BILISIM TELEKOM
20940 641 206 489 Akamai Technologies European
6830 640 1927 411 UPC Distribution Services
12479 640 648 54 Uni2 Autonomous System
8551 578 360 81 Bezeq International
31148 540 37 9 FreeNet ISP
3320 533 8442 399 Deutsche Telekom AG
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 1761 326 160 TVCABLE BOGOTA
28573 1688 1092 57 NET Servicos de Comunicao S.A
8151 1487 3013 348 UniNet S.A. de C.V.
7303 1328 822 186 Telecom Argentina Stet-France
26615 899 676 30 Tim Brasil S.A.
27947 678 68 110 Telconet S.A
11172 634 91 72 Servicios Alestra S.A de C.V
22047 582 322 17 VTR PUNTO NET S.A.
6503 572 418 65 AVANTEL, S.A.
3816 558 240 89 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 1178 958 13 TEDATA
24863 801 274 37 LINKdotNET AS number
6713 489 649 18 Itissalat Al-MAGHRIB
3741 277 923 228 The Internet Solution
15706 227 32 6 Sudatel Internet Exchange Aut
12258 197 28 62 Vodacom Internet Company
24835 182 80 8 RAYA Telecom - Egypt
33776 161 12 16 Starcomms Nigeria Limited
36923 157 20 4 Swift Networks Limited
29571 156 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
7029 3418 1014 159 Windstream Communications Inc
6389 3405 3807 198 bellsouth.net, inc.
4766 2494 11109 994 Korea Telecom (KIX)
18566 2091 382 177 Covad Communications
1785 1881 680 128 PaeTec Communications, Inc.
8402 1777 544 16 Corbina telecom
10620 1761 326 160 TVCABLE BOGOTA
17974 1735 503 37 PT TELEKOMUNIKASI INDONESIA
28573 1688 1092 57 NET Servicos de Comunicao S.A
7545 1647 303 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
6389 3405 3207 bellsouth.net, inc.
18566 2091 1914 Covad Communications
8402 1777 1761 Corbina telecom
1785 1881 1753 PaeTec Communications, Inc.
17974 1735 1698 PT TELEKOMUNIKASI INDONESIA
28573 1688 1631 NET Servicos de Comunicao S.A
10620 1761 1601 TVCABLE BOGOTA
7545 1647 1561 TPG Internet Pty Ltd
4766 2494 1500 Korea Telecom (KIX)
22773 1544 1433 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
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
23.27.0.0/20 54500 EGIHosting
23.27.0.0/16 54500 EGIHosting
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
/13:458 /14:818 /15:1476 /16:12177 /17:6227 /18:10410
/19:20464 /20:28564 /21:29360 /22:39917 /23:37110 /24:209174
/25:1212 /26:1443 /27:782 /28:169 /29:57 /30:14
/31:0 /32:19
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
7029 3073 3418 Windstream Communications Inc
6389 2103 3405 bellsouth.net, inc.
18566 2040 2091 Covad Communications
8402 1755 1777 Corbina telecom
10620 1658 1761 TVCABLE BOGOTA
30036 1368 1419 Mediacom Communications Corp
11492 1125 1162 Cable One
1785 1064 1881 PaeTec Communications, Inc.
7011 1042 1157 Citizens Utilities
15557 1034 1087 LDCOM NETWORKS
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:523 2:726 4:14 6:3 8:392 12:1961
13:1 14:603 15:12 16:3 17:7 20:8
23:142 24:1749 27:1231 31:961 32:62 33:2
34:2 36:9 37:237 38:778 40:117 41:2936
42:123 44:3 46:1403 47:3 49:339 50:512
52:13 54:5 55:12 56:3 57:38 58:953
59:497 60:283 61:1190 62:972 63:2011 64:4132
65:2281 66:4471 67:2031 68:1158 69:3168 70:917
71:423 72:1831 74:2635 75:469 76:320 77:977
78:963 79:485 80:1209 81:887 82:630 83:538
84:604 85:1185 86:726 87:907 88:334 89:1565
90:285 91:4549 92:515 93:1382 94:1369 95:1120
96:424 97:316 98:833 99:38 100:5 101:146
103:886 106:64 107:171 108:211 109:1532 110:726
111:861 112:437 113:536 114:609 115:774 116:870
117:712 118:910 119:1261 120:329 121:687 122:1621
123:1077 124:1341 125:1341 128:543 129:192 130:260
131:591 132:166 133:21 134:236 135:62 136:212
137:185 138:275 139:145 140:491 141:266 142:390
143:427 144:501 145:68 146:490 147:243 148:725
149:300 150:162 151:176 152:448 153:171 154:7
155:432 156:212 157:370 158:162 159:518 160:327
161:245 162:344 163:186 164:531 165:394 166:564
167:461 168:810 169:148 170:848 171:117 172:4
173:1716 174:608 175:421 176:547 177:537 178:1285
180:1196 181:66 182:769 183:285 184:442 185:1
186:2101 187:857 188:1052 189:1207 190:5471 192:5990
193:5573 194:4408 195:3611 196:1286 197:168 198:3636
199:4443 200:5739 201:1771 202:8389 203:8669 204:4361
205:2457 206:2753 207:2794 208:4045 209:3571 210:2754
211:1464 212:1956 213:1879 214:871 215:103 216:5041
217:1525 218:540 219:333 220:1229 221:555 222:324
223:326
End of report
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