[lacnog] Weekly Routing Table Report
Routing Analysis Role Account
cscora en apnic.net
Vie Abr 22 15:59:58 BRT 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 en lists.apnic.net
For historical data, please see http://thyme.rand.apnic.net.
If you have any comments please contact Philip Smith <pfs en cisco.com>.
Routing Table Report 04:00 +10GMT Sat 23 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 355581
Prefixes after maximum aggregation: 160822
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 175365
Total ASes present in the Internet Routing Table: 37371
Prefixes per ASN: 9.51
Origin-only ASes present in the Internet Routing Table: 31313
Origin ASes announcing only one prefix: 15071
Transit ASes present in the Internet Routing Table: 5046
Transit-only ASes present in the Internet Routing Table: 135
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 36
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 564
Unregistered ASNs in the Routing Table: 275
Number of 32-bit ASNs allocated by the RIRs: 1309
Number of 32-bit ASNs visible in the Routing Table: 1012
Prefixes from 32-bit ASNs in the Routing Table: 2274
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 161
Number of addresses announced to Internet: 2418199616
Equivalent to 144 /8s, 34 /16s and 204 /24s
Percentage of available address space announced: 65.2
Percentage of allocated address space announced: 65.2
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 90.5
Total number of prefixes smaller than registry allocations: 147668
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 88888
Total APNIC prefixes after maximum aggregation: 29965
APNIC Deaggregation factor: 2.97
Prefixes being announced from the APNIC address blocks: 85376
Unique aggregates announced from the APNIC address blocks: 36841
APNIC Region origin ASes present in the Internet Routing Table: 4419
APNIC Prefixes per ASN: 19.32
APNIC Region origin ASes announcing only one prefix: 1226
APNIC Region transit ASes present in the Internet Routing Table: 700
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 22
Number of APNIC region 32-bit ASNs visible in the Routing Table: 48
Number of APNIC addresses announced to Internet: 610706464
Equivalent to 36 /8s, 102 /16s and 164 /24s
Percentage of available APNIC address space announced: 77.4
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: 140032
Total ARIN prefixes after maximum aggregation: 71172
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 112430
Unique aggregates announced from the ARIN address blocks: 45157
ARIN Region origin ASes present in the Internet Routing Table: 14334
ARIN Prefixes per ASN: 7.84
ARIN Region origin ASes announcing only one prefix: 5473
ARIN Region transit ASes present in the Internet Routing Table: 1492
Average ARIN Region AS path length visible: 3.9
Max ARIN Region AS path length visible: 23
Number of ARIN region 32-bit ASNs visible in the Routing Table: 11
Number of ARIN addresses announced to Internet: 798645760
Equivalent to 47 /8s, 154 /16s and 94 /24s
Percentage of available ARIN address space announced: 63.5
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: 84022
Total RIPE prefixes after maximum aggregation: 47852
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 77130
Unique aggregates announced from the RIPE address blocks: 51011
RIPE Region origin ASes present in the Internet Routing Table: 15538
RIPE Prefixes per ASN: 4.96
RIPE Region origin ASes announcing only one prefix: 7807
RIPE Region transit ASes present in the Internet Routing Table: 2435
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: 749
Number of RIPE addresses announced to Internet: 466814464
Equivalent to 27 /8s, 211 /16s and 6 /24s
Percentage of available RIPE address space announced: 75.2
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: 32482
Total LACNIC prefixes after maximum aggregation: 7448
LACNIC Deaggregation factor: 4.36
Prefixes being announced from the LACNIC address blocks: 31486
Unique aggregates announced from the LACNIC address blocks: 16475
LACNIC Region origin ASes present in the Internet Routing Table: 1439
LACNIC Prefixes per ASN: 21.88
LACNIC Region origin ASes announcing only one prefix: 432
LACNIC Region transit ASes present in the Internet Routing Table: 261
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: 199
Number of LACNIC addresses announced to Internet: 82681984
Equivalent to 4 /8s, 237 /16s and 160 /24s
Percentage of available LACNIC address space announced: 54.8
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: 7658
Total AfriNIC prefixes after maximum aggregation: 1822
AfriNIC Deaggregation factor: 4.20
Prefixes being announced from the AfriNIC address blocks: 6067
Unique aggregates announced from the AfriNIC address blocks: 1881
AfriNIC Region origin ASes present in the Internet Routing Table: 441
AfriNIC Prefixes per ASN: 13.76
AfriNIC Region origin ASes announcing only one prefix: 133
AfriNIC Region transit ASes present in the Internet Routing Table: 95
Average AfriNIC Region AS path length visible: 4.7
Max AfriNIC Region AS path length visible: 31
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23300352
Equivalent to 1 /8s, 99 /16s and 137 /24s
Percentage of available AfriNIC address space announced: 34.7
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 2430 9482 904 Korea Telecom (KIX)
17974 1798 515 29 PT TELEKOMUNIKASI INDONESIA
7545 1549 300 81 TPG Internet Pty Ltd
4755 1454 634 167 TATA Communications formerly
7552 1195 1064 7 Vietel Corporation
24560 1140 323 204 Bharti Airtel Ltd., Telemedia
9583 1054 77 495 Sify Limited
4808 1030 2097 293 CNCGROUP IP network: China169
9829 1008 870 50 BSNL National Internet Backbo
17488 942 164 98 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 3652 3822 255 bellsouth.net, inc.
4323 2649 1090 398 Time Warner Telecom
1785 1789 681 128 PaeTec Communications, Inc.
18566 1760 349 229 Covad Communications
6478 1636 309 43 AT&T Worldnet Services
20115 1535 1552 638 Charter Communications
19262 1495 4949 298 Verizon Global Networks
7018 1357 6801 886 AT&T WorldNet Services
22773 1299 2865 84 Cox Communications, Inc.
2386 1270 536 912 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 508 106 182 BILISIM TELEKOM
3292 455 1997 391 TDC Tele Danmark
29049 450 33 48 AzerSat LLC.
8866 446 134 26 Bulgarian Telecommunication C
20940 439 129 335 Akamai Technologies European
3320 423 7609 368 Deutsche Telekom AG
12479 409 577 6 Uni2 Autonomous System
8551 405 354 47 Bezeq International
702 396 1802 309 UUNET - Commercial IP service
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 1437 268 160 TVCABLE BOGOTA
28573 1281 988 87 NET Servicos de Comunicao S.A
8151 1248 2688 369 UniNet S.A. de C.V.
7303 927 467 149 Telecom Argentina Stet-France
6503 907 354 72 AVANTEL, S.A.
14420 663 53 91 CORPORACION NACIONAL DE TELEC
22047 565 310 15 VTR PUNTO NET S.A.
3816 516 225 98 Empresa Nacional de Telecomun
11172 488 99 82 Servicios Alestra S.A de C.V
27947 483 53 53 Telconet S.A
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 836 445 11 TEDATA
24863 778 147 39 LINKdotNET AS number
15475 422 90 8 Nile Online
36992 297 415 13 Etisalat MISR
3741 267 985 227 The Internet Solution
6713 238 215 13 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
24835 209 78 10 RAYA Telecom - Egypt
29571 161 17 11 Ci Telecom Autonomous system
16637 148 441 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 3652 3822 255 bellsouth.net, inc.
4323 2649 1090 398 Time Warner Telecom
4766 2430 9482 904 Korea Telecom (KIX)
23456 2274 652 1233 32-bit ASN transition
17974 1798 515 29 PT TELEKOMUNIKASI INDONESIA
1785 1789 681 128 PaeTec Communications, Inc.
18566 1760 349 229 Covad Communications
6478 1636 309 43 AT&T Worldnet Services
7545 1549 300 81 TPG Internet Pty Ltd
20115 1535 1552 638 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 2649 2251 Time Warner Telecom
17974 1798 1769 PT TELEKOMUNIKASI INDONESIA
1785 1789 1661 PaeTec Communications, Inc.
6478 1636 1593 AT&T Worldnet Services
18566 1760 1531 Covad Communications
4766 2430 1526 Korea Telecom (KIX)
7545 1549 1468 TPG Internet Pty Ltd
4755 1454 1287 TATA Communications formerly
10620 1437 1277 TVCABLE BOGOTA
11492 1254 1239 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
13746 UNALLOCATED 12.24.56.0/24 7018 AT&T WorldNet Servic
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
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
31.192.112.0/20 30361 Swiftwill Solutions
31.192.128.0/19 31214 TIS-DIALOG Autonomous system
31.192.232.0/23 47271 CJSC "Uralunicom"
31.192.232.0/22 47271 CJSC "Uralunicom"
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 /11:77 /12:221
/13:458 /14:786 /15:1379 /16:11668 /17:5741 /18:9624
/19:19173 /20:25618 /21:25611 /22:33775 /23:32642 /24:185589
/25:1120 /26:1285 /27:700 /28:38 /29:8 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2253 3652 bellsouth.net, inc.
18566 1728 1760 Covad Communications
6478 1590 1636 AT&T Worldnet Services
4323 1346 2649 Time Warner Telecom
10620 1327 1437 TVCABLE BOGOTA
11492 1203 1254 Cable One
23456 1146 2274 32-bit ASN transition
7011 1062 1161 Citizens Utilities
1785 1059 1789 PaeTec Communications, Inc.
22773 843 1299 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:262 2:43 4:14 5:1 6:1 8:347
12:2010 13:1 14:441 15:15 16:3 17:8
20:9 23:5 24:1605 27:722 31:209 32:60
33:3 34:2 37:1 38:764 40:101 41:2400
42:3 44:3 46:866 47:4 49:177 50:365
52:13 55:3 56:2 57:31 58:846 59:478
60:387 61:1268 62:984 63:1919 64:3934 65:2326
66:4353 67:1856 68:1081 69:2977 70:700 71:345
72:1904 73:1 74:2349 75:297 76:335 77:844
78:676 79:452 80:1098 81:829 82:500 83:461
84:647 85:1082 86:559 87:760 88:332 89:1581
90:183 91:3709 92:514 93:1058 94:1260 95:787
96:466 97:251 98:823 99:35 101:63 103:5
106:1 107:5 108:84 109:932 110:550 111:695
112:325 113:361 114:523 115:683 116:949 117:674
118:800 119:1147 120:301 121:672 122:1626 123:1071
124:1250 125:1268 128:265 129:164 130:172 131:566
132:113 133:19 134:217 135:49 136:214 137:142
138:301 139:104 140:486 141:174 142:398 143:397
144:485 145:52 146:441 147:207 148:578 149:233
150:170 151:187 152:307 153:179 154:3 155:395
156:191 157:353 158:132 159:382 160:316 161:243
162:277 163:165 164:487 165:350 166:511 167:426
168:719 169:153 170:784 171:77 172:1 173:1502
174:531 175:359 177:79 178:853 180:821 181:9
182:428 183:201 184:252 185:1 186:1140 187:802
188:985 189:1004 190:4846 192:5792 193:4829 194:3457
195:2964 196:1166 197:16 198:3564 199:3920 200:5522
201:1493 202:8351 203:8446 204:4136 205:2329 206:2745
207:3029 208:3964 209:3505 210:2726 211:1382 212:1973
213:1712 214:744 215:67 216:4879 217:1657 218:561
219:374 220:1195 221:483 222:341 223:143
End of report
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