[afnog] Weekly Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri Sep 16 19:21:31 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 17 Sep, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 371690
Prefixes after maximum aggregation: 167917
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 184823
Total ASes present in the Internet Routing Table: 38823
Prefixes per ASN: 9.57
Origin-only ASes present in the Internet Routing Table: 32200
Origin ASes announcing only one prefix: 15478
Transit ASes present in the Internet Routing Table: 5208
Transit-only ASes present in the Internet Routing Table: 134
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 36
Max AS path prepend of ASN (22394) 33
Prefixes from unregistered ASNs in the Routing Table: 1319
Unregistered ASNs in the Routing Table: 742
Number of 32-bit ASNs allocated by the RIRs: 1739
Number of 32-bit ASNs visible in the Routing Table: 1415
Prefixes from 32-bit ASNs in the Routing Table: 3247
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 111
Number of addresses announced to Internet: 2477780352
Equivalent to 147 /8s, 175 /16s and 237 /24s
Percentage of available address space announced: 66.9
Percentage of allocated address space announced: 66.9
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 91.3
Total number of prefixes smaller than registry allocations: 154979
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 93491
Total APNIC prefixes after maximum aggregation: 30741
APNIC Deaggregation factor: 3.04
Prefixes being announced from the APNIC address blocks: 90025
Unique aggregates announced from the APNIC address blocks: 38232
APNIC Region origin ASes present in the Internet Routing Table: 4567
APNIC Prefixes per ASN: 19.71
APNIC Region origin ASes announcing only one prefix: 1258
APNIC Region transit ASes present in the Internet Routing Table: 710
Average APNIC Region AS path length visible: 4.5
Max APNIC Region AS path length visible: 21
Number of APNIC region 32-bit ASNs visible in the Routing Table: 88
Number of APNIC addresses announced to Internet: 627559520
Equivalent to 37 /8s, 103 /16s and 204 /24s
Percentage of available APNIC address space announced: 79.6
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: 143323
Total ARIN prefixes after maximum aggregation: 73655
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 115248
Unique aggregates announced from the ARIN address blocks: 47939
ARIN Region origin ASes present in the Internet Routing Table: 14662
ARIN Prefixes per ASN: 7.86
ARIN Region origin ASes announcing only one prefix: 5652
ARIN Region transit ASes present in the Internet Routing Table: 1553
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 36
Number of ARIN region 32-bit ASNs visible in the Routing Table: 12
Number of ARIN addresses announced to Internet: 804847104
Equivalent to 47 /8s, 248 /16s and 254 /24s
Percentage of available ARIN address space announced: 64.0
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: 88191
Total RIPE prefixes after maximum aggregation: 50131
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 81218
Unique aggregates announced from the RIPE address blocks: 53898
RIPE Region origin ASes present in the Internet Routing Table: 15982
RIPE Prefixes per ASN: 5.08
RIPE Region origin ASes announcing only one prefix: 7963
RIPE Region transit ASes present in the Internet Routing Table: 2501
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: 1003
Number of RIPE addresses announced to Internet: 488917248
Equivalent to 29 /8s, 36 /16s and 73 /24s
Percentage of available RIPE address space announced: 78.8
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: 34743
Total LACNIC prefixes after maximum aggregation: 7768
LACNIC Deaggregation factor: 4.47
Prefixes being announced from the LACNIC address blocks: 34025
Unique aggregates announced from the LACNIC address blocks: 17820
LACNIC Region origin ASes present in the Internet Routing Table: 1527
LACNIC Prefixes per ASN: 22.28
LACNIC Region origin ASes announcing only one prefix: 451
LACNIC Region transit ASes present in the Internet Routing Table: 273
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: 308
Number of LACNIC addresses announced to Internet: 89082496
Equivalent to 5 /8s, 79 /16s and 74 /24s
Percentage of available LACNIC address space announced: 59.0
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: 8517
Total AfriNIC prefixes after maximum aggregation: 2026
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 6597
Unique aggregates announced from the AfriNIC address blocks: 2037
AfriNIC Region origin ASes present in the Internet Routing Table: 486
AfriNIC Prefixes per ASN: 13.57
AfriNIC Region origin ASes announcing only one prefix: 154
AfriNIC Region transit ASes present in the Internet Routing Table: 105
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: 27220736
Equivalent to 1 /8s, 159 /16s and 91 /24s
Percentage of available AfriNIC address space announced: 40.6
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 2508 11047 955 Korea Telecom (KIX)
17974 2010 516 31 PT TELEKOMUNIKASI INDONESIA
7545 1597 303 85 TPG Internet Pty Ltd
4755 1548 639 170 TATA Communications formerly
24560 1182 337 194 Bharti Airtel Ltd., Telemedia
9829 1155 989 28 BSNL National Internet Backbo
9583 1078 80 505 Sify Limited
4808 1069 2088 302 CNCGROUP IP network: China169
7552 978 1062 11 Vietel Corporation
17488 957 189 159 Hathway IP Over Cable Interne
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 3563 3817 226 bellsouth.net, inc.
18566 1912 364 237 Covad Communications
1785 1820 680 122 PaeTec Communications, Inc.
4323 1626 1085 393 Time Warner Telecom
7029 1608 1008 195 Windstream Communications Inc
20115 1595 1542 634 Charter Communications
22773 1455 2906 99 Cox Communications, Inc.
30036 1423 263 688 Mediacom Communications Corp
19262 1395 4724 399 Verizon Global Networks
7018 1331 7050 869 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
34984 559 108 179 BILISIM TELEKOM
6830 524 1811 322 UPC Distribution Services
20940 515 166 401 Akamai Technologies European
3292 472 2080 404 TDC Tele Danmark
12479 472 594 8 Uni2 Autonomous System
8866 460 133 26 Bulgarian Telecommunication C
3320 432 8152 376 Deutsche Telekom AG
29049 424 31 55 AzerSat LLC.
8402 415 352 13 Corbina telecom
8551 403 354 44 Bezeq International
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 1675 308 159 TVCABLE BOGOTA
8151 1409 2802 355 UniNet S.A. de C.V.
28573 1351 1012 68 NET Servicos de Comunicao S.A
7303 1156 678 170 Telecom Argentina Stet-France
14420 730 57 92 CORPORACION NACIONAL DE TELEC
6503 580 450 68 AVANTEL, S.A.
22047 579 322 17 VTR PUNTO NET S.A.
27947 568 55 82 Telconet S.A
3816 535 232 98 Empresa Nacional de Telecomun
11172 516 85 91 Servicios Alestra S.A de C.V
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
24863 813 147 43 LINKdotNET AS number
8452 698 445 11 TEDATA
15475 513 74 8 Nile Online
36992 308 415 14 Etisalat MISR
3741 267 938 228 The Internet Solution
6713 242 519 14 Itissalat Al-MAGHRIB
33776 239 13 8 Starcomms Nigeria Limited
15706 219 32 6 Sudatel Internet Exchange Aut
12258 198 28 58 Vodacom Internet Company
29571 198 17 13 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 3563 3817 226 bellsouth.net, inc.
23456 3247 770 1753 32-bit ASN transition
4766 2508 11047 955 Korea Telecom (KIX)
17974 2010 516 31 PT TELEKOMUNIKASI INDONESIA
18566 1912 364 237 Covad Communications
1785 1820 680 122 PaeTec Communications, Inc.
10620 1675 308 159 TVCABLE BOGOTA
4323 1626 1085 393 Time Warner Telecom
7029 1608 1008 195 Windstream Communications Inc
7545 1597 303 85 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
17974 2010 1979 PT TELEKOMUNIKASI INDONESIA
1785 1820 1698 PaeTec Communications, Inc.
18566 1912 1675 Covad Communications
4766 2508 1553 Korea Telecom (KIX)
10620 1675 1516 TVCABLE BOGOTA
7545 1597 1512 TPG Internet Pty Ltd
23456 3247 1494 32-bit ASN transition
7029 1608 1413 Windstream Communications Inc
4755 1548 1378 TATA Communications formerly
22773 1455 1356 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
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
46.18.104.0/21 23456 32-bit ASN transition
50.115.128.0/21 20248 Take 2 Hosting, Inc.
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 /10:27 /11:81 /12:235
/13:464 /14:800 /15:1411 /16:11970 /17:5965 /18:10012
/19:19731 /20:26875 /21:26973 /22:36182 /23:34758 /24:192858
/25:1105 /26:1294 /27:744 /28:165 /29:4 /30:0
/31:0 /32:5
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2200 3563 bellsouth.net, inc.
18566 1868 1912 Covad Communications
23456 1571 3247 32-bit ASN transition
10620 1570 1675 TVCABLE BOGOTA
30036 1381 1423 Mediacom Communications Corp
7029 1308 1608 Windstream Communications Inc
11492 1114 1152 Cable One
7011 1058 1183 Citizens Utilities
1785 1052 1820 PaeTec Communications, Inc.
22773 945 1455 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:372 2:52 4:15 5:1 6:3 8:351
12:1951 13:1 14:540 15:13 16:3 17:5
20:10 23:32 24:1678 27:940 31:530 32:64
33:4 34:2 36:4 38:742 40:108 41:2576
42:48 44:3 46:983 47:3 49:243 50:419
52:13 54:2 55:5 56:2 57:35 58:876
59:501 60:376 61:1175 62:1088 63:1944 64:4047
65:2300 66:3928 67:1939 68:1100 69:3174 70:783
71:377 72:1859 74:2437 75:315 76:339 77:870
78:665 79:469 80:1122 81:839 82:503 83:499
84:687 85:1086 86:410 87:869 88:347 89:1535
90:234 91:4088 92:527 93:1150 94:1331 95:791
96:437 97:272 98:932 99:37 101:207 103:301
106:94 107:44 108:76 109:1017 110:668 111:784
112:313 113:440 114:566 115:685 116:922 117:680
118:891 119:1199 120:338 121:685 122:1602 123:1015
124:1355 125:1354 128:248 129:179 130:167 131:577
132:120 133:21 134:215 135:53 136:212 137:137
138:294 139:108 140:493 141:288 142:389 143:407
144:483 145:61 146:468 147:214 148:636 149:251
150:153 151:190 152:452 153:177 154:6 155:390
156:202 157:356 158:144 159:461 160:324 161:207
162:334 163:176 164:508 165:372 166:536 167:433
168:747 169:146 170:860 171:84 172:4 173:1639
174:628 175:393 176:176 177:251 178:999 180:1067
181:26 182:616 183:237 184:366 185:1 186:1440
187:667 188:938 189:872 190:5156 192:5911 193:5005
194:3522 195:3057 196:1251 197:148 198:3591 199:4101
200:5514 201:1636 202:8528 203:8484 204:4251 205:2333
206:2667 207:2829 208:4032 209:3457 210:2693 211:1467
212:2088 213:1768 214:784 215:75 216:4849 217:1610
218:552 219:333 220:1197 221:514 222:343 223:266
End of report
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