[AusNOG] Weekly Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Sat May 7 05:00:32 EST 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 <pfs at cisco.com>.
Routing Table Report 04:00 +10GMT Sat 07 May, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 356623
Prefixes after maximum aggregation: 161219
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 176188
Total ASes present in the Internet Routing Table: 37501
Prefixes per ASN: 9.51
Origin-only ASes present in the Internet Routing Table: 31368
Origin ASes announcing only one prefix: 15102
Transit ASes present in the Internet Routing Table: 5082
Transit-only ASes present in the Internet Routing Table: 139
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 36
Max AS path prepend of ASN (48687) 24
Prefixes from unregistered ASNs in the Routing Table: 592
Unregistered ASNs in the Routing Table: 299
Number of 32-bit ASNs allocated by the RIRs: 1333
Number of 32-bit ASNs visible in the Routing Table: 1051
Prefixes from 32-bit ASNs in the Routing Table: 2383
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 147
Number of addresses announced to Internet: 2423268544
Equivalent to 144 /8s, 112 /16s and 36 /24s
Percentage of available address space announced: 65.4
Percentage of allocated address space announced: 65.4
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.7
Total number of prefixes smaller than registry allocations: 148140
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 89329
Total APNIC prefixes after maximum aggregation: 29919
APNIC Deaggregation factor: 2.99
Prefixes being announced from the APNIC address blocks: 85712
Unique aggregates announced from the APNIC address blocks: 36913
APNIC Region origin ASes present in the Internet Routing Table: 4437
APNIC Prefixes per ASN: 19.32
APNIC Region origin ASes announcing only one prefix: 1235
APNIC Region transit ASes present in the Internet Routing Table: 707
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 18
Number of APNIC region 32-bit ASNs visible in the Routing Table: 48
Number of APNIC addresses announced to Internet: 612912416
Equivalent to 36 /8s, 136 /16s and 77 /24s
Percentage of available APNIC address space announced: 77.7
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079
55296-56319, 131072-132095
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: 140234
Total ARIN prefixes after maximum aggregation: 71250
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 112594
Unique aggregates announced from the ARIN address blocks: 45335
ARIN Region origin ASes present in the Internet Routing Table: 14357
ARIN Prefixes per ASN: 7.84
ARIN Region origin ASes announcing only one prefix: 5492
ARIN Region transit ASes present in the Internet Routing Table: 1499
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 23
Number of ARIN region 32-bit ASNs visible in the Routing Table: 12
Number of ARIN addresses announced to Internet: 800024832
Equivalent to 47 /8s, 175 /16s and 105 /24s
Percentage of available ARIN address space announced: 63.6
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: 83935
Total RIPE prefixes after maximum aggregation: 48029
RIPE Deaggregation factor: 1.75
Prefixes being announced from the RIPE address blocks: 77374
Unique aggregates announced from the RIPE address blocks: 51246
RIPE Region origin ASes present in the Internet Routing Table: 15569
RIPE Prefixes per ASN: 4.97
RIPE Region origin ASes announcing only one prefix: 7811
RIPE Region transit ASes present in the Internet Routing Table: 2452
Average RIPE Region AS path length visible: 4.7
Max RIPE Region AS path length visible: 36
Number of RIPE region 32-bit ASNs visible in the Routing Table: 777
Number of RIPE addresses announced to Internet: 468167936
Equivalent to 27 /8s, 231 /16s and 173 /24s
Percentage of available RIPE address space announced: 75.4
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: 32749
Total LACNIC prefixes after maximum aggregation: 7494
LACNIC Deaggregation factor: 4.37
Prefixes being announced from the LACNIC address blocks: 31794
Unique aggregates announced from the LACNIC address blocks: 16628
LACNIC Region origin ASes present in the Internet Routing Table: 1450
LACNIC Prefixes per ASN: 21.93
LACNIC Region origin ASes announcing only one prefix: 430
LACNIC Region transit ASes present in the Internet Routing Table: 268
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: 209
Number of LACNIC addresses announced to Internet: 83079680
Equivalent to 4 /8s, 243 /16s and 178 /24s
Percentage of available LACNIC address space announced: 55.0
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: 7778
Total AfriNIC prefixes after maximum aggregation: 1857
AfriNIC Deaggregation factor: 4.19
Prefixes being announced from the AfriNIC address blocks: 6135
Unique aggregates announced from the AfriNIC address blocks: 1917
AfriNIC Region origin ASes present in the Internet Routing Table: 447
AfriNIC Prefixes per ASN: 13.72
AfriNIC Region origin ASes announcing only one prefix: 134
AfriNIC Region transit ASes present in the Internet Routing Table: 97
Average AfriNIC Region AS path length visible: 4.7
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23038208
Equivalent to 1 /8s, 95 /16s and 137 /24s
Percentage of available AfriNIC address space announced: 34.3
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 2436 9490 906 Korea Telecom (KIX)
17974 1813 515 29 PT TELEKOMUNIKASI INDONESIA
7545 1565 301 86 TPG Internet Pty Ltd
4755 1461 634 167 TATA Communications formerly
7552 1204 1064 7 Vietel Corporation
24560 1151 336 184 Bharti Airtel Ltd., Telemedia
9583 1057 77 492 Sify Limited
9829 1039 874 51 BSNL National Internet Backbo
4808 1036 2087 294 CNCGROUP IP network: China169
17488 938 164 100 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 3644 3822 258 bellsouth.net, inc.
4323 2582 1087 399 Time Warner Telecom
1785 1785 681 127 PaeTec Communications, Inc.
18566 1782 354 219 Covad Communications
6478 1667 313 52 AT&T Worldnet Services
20115 1531 1536 636 Charter Communications
19262 1496 4949 298 Verizon Global Networks
7018 1359 6927 887 AT&T WorldNet Services
22773 1329 2897 87 Cox Communications, Inc.
2386 1265 536 908 AT&T Data Communications Serv
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
6830 519 1780 321 UPC Distribution Services
34984 508 106 184 BILISIM TELEKOM
3292 457 1997 391 TDC Tele Danmark
20940 446 131 342 Akamai Technologies European
8866 444 134 26 Bulgarian Telecommunication C
29049 443 33 43 AzerSat LLC.
3320 423 7609 368 Deutsche Telekom AG
12479 419 577 6 Uni2 Autonomous System
8551 406 355 45 Bezeq International
8402 401 320 11 Corbina telecom
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 1458 270 155 TVCABLE BOGOTA
8151 1366 2698 364 UniNet S.A. de C.V.
28573 1298 990 89 NET Servicos de Comunicao S.A
7303 926 467 149 Telecom Argentina Stet-France
6503 801 354 73 AVANTEL, S.A.
14420 665 53 91 CORPORACION NACIONAL DE TELEC
22047 557 310 15 VTR PUNTO NET S.A.
3816 518 226 99 Empresa Nacional de Telecomun
11172 495 84 83 Servicios Alestra S.A de C.V
13489 487 233 116 Orbitel S.A. E.S.P.
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 881 445 11 TEDATA
24863 782 147 37 LINKdotNET AS number
15475 421 90 8 Nile Online
36992 287 331 17 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 240 215 13 Itissalat Al-MAGHRIB
33776 214 12 11 Starcomms Nigeria Limited
24835 209 78 10 RAYA Telecom - Egypt
29571 161 17 11 Ci Telecom Autonomous system
16637 149 441 86 MTN Network Solutions
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 3644 3822 258 bellsouth.net, inc.
4323 2582 1087 399 Time Warner Telecom
4766 2436 9490 906 Korea Telecom (KIX)
23456 2383 666 1288 32-bit ASN transition
17974 1813 515 29 PT TELEKOMUNIKASI INDONESIA
1785 1785 681 127 PaeTec Communications, Inc.
18566 1782 354 219 Covad Communications
6478 1667 313 52 AT&T Worldnet Services
7545 1565 301 86 TPG Internet Pty Ltd
20115 1531 1536 636 Charter Communications
Complete listing at http://thyme.rand.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 2582 2183 Time Warner Telecom
17974 1813 1784 PT TELEKOMUNIKASI INDONESIA
1785 1785 1658 PaeTec Communications, Inc.
6478 1667 1615 AT&T Worldnet Services
18566 1782 1563 Covad Communications
4766 2436 1530 Korea Telecom (KIX)
7545 1565 1479 TPG Internet Pty Ltd
10620 1458 1303 TVCABLE BOGOTA
4755 1461 1294 TATA Communications formerly
11492 1262 1247 Cable One
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
31.210.248.0/21 35706 Net at Once
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
45.127.0.0/16 13767 NetworkTwo Communications Gro
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 /8:20 /9:12 /10:28 /11:78 /12:223
/13:458 /14:790 /15:1389 /16:11689 /17:5747 /18:9693
/19:19273 /20:25574 /21:25731 /22:33992 /23:32787 /24:185889
/25:1096 /26:1273 /27:707 /28:158 /29:8 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2245 3644 bellsouth.net, inc.
18566 1744 1782 Covad Communications
6478 1621 1667 AT&T Worldnet Services
10620 1348 1458 TVCABLE BOGOTA
4323 1289 2582 Time Warner Telecom
11492 1211 1262 Cable One
23456 1182 2383 32-bit ASN transition
7011 1062 1162 Citizens Utilities
1785 1054 1785 PaeTec Communications, Inc.
22773 846 1329 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:265 2:61 4:14 5:1 6:3 8:353
12:1992 13:1 14:452 15:15 16:3 17:8
20:10 23:6 24:1627 27:734 31:296 32:63
33:3 34:2 37:1 38:765 40:101 41:2485
42:4 44:3 46:906 47:4 49:172 50:388
52:13 55:4 56:2 57:30 58:843 59:482
60:387 61:1254 62:995 63:1926 64:3927 65:2308
66:4319 67:1873 68:1079 69:2966 70:699 71:346
72:1884 73:1 74:2339 75:299 76:338 77:838
78:688 79:454 80:1079 81:813 82:494 83:446
84:630 85:1076 86:577 87:747 88:323 89:1596
90:192 91:3707 92:511 93:1062 94:1266 95:804
96:482 97:255 98:823 99:35 101:69 103:9
107:6 108:85 109:946 110:583 111:710 112:318
113:399 114:532 115:657 116:949 117:678 118:818
119:1143 120:305 121:672 122:1619 123:1080 124:1254
125:1221 128:259 129:163 130:165 131:564 132:109
133:19 134:217 135:49 136:214 137:143 138:302
139:105 140:480 141:239 142:400 143:398 144:486
145:50 146:436 147:210 148:595 149:243 150:171
151:187 152:310 153:179 154:3 155:396 156:190
157:352 158:130 159:384 160:315 161:205 162:279
163:164 164:498 165:349 166:513 167:426 168:699
169:153 170:784 171:77 172:1 173:1538 174:538
175:373 177:119 178:859 180:818 181:19 182:434
183:208 184:260 185:1 186:1153 187:800 188:847
189:941 190:4853 192:5792 193:4827 194:3466 195:2966
196:1201 197:16 198:3564 199:3921 200:5526 201:1504
202:8357 203:8448 204:4137 205:2327 206:2747 207:3038
208:3960 209:3481 210:2721 211:1372 212:1978 213:1718
214:721 215:64 216:4893 217:1657 218:565 219:371
220:1204 221:484 222:342 223:146
End of report
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