[lacnog] Weekly Routing Table Report
Routing Analysis Role Account
cscora en apnic.net
Vie Mar 11 15:38:33 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 12 Mar, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 350049
Prefixes after maximum aggregation: 157788
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 172931
Total ASes present in the Internet Routing Table: 36036
Prefixes per ASN: 9.71
Origin-only ASes present in the Internet Routing Table: 31061
Origin ASes announcing only one prefix: 14941
Transit ASes present in the Internet Routing Table: 4975
Transit-only ASes present in the Internet Routing Table: 124
Average AS path length visible in the Internet Routing Table: 4.3
Max AS path length visible: 31
Max AS path prepend of ASN (36992) 29
Prefixes from unregistered ASNs in the Routing Table: 392
Unregistered ASNs in the Routing Table: 178
Number of 32-bit ASNs allocated by the RIRs: 1191
Prefixes from 32-bit ASNs in the Routing Table: 2
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 252
Number of addresses announced to Internet: 2467281824
Equivalent to 147 /8s, 15 /16s and 187 /24s
Percentage of available address space announced: 66.6
Percentage of allocated address space announced: 66.6
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 89.1
Total number of prefixes smaller than registry allocations: 145075
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87220
Total APNIC prefixes after maximum aggregation: 29669
APNIC Deaggregation factor: 2.94
Prefixes being announced from the APNIC address blocks: 84042
Unique aggregates announced from the APNIC address blocks: 36224
APNIC Region origin ASes present in the Internet Routing Table: 4339
APNIC Prefixes per ASN: 19.37
APNIC Region origin ASes announcing only one prefix: 1194
APNIC Region transit ASes present in the Internet Routing Table: 690
Average APNIC Region AS path length visible: 4.4
Max APNIC Region AS path length visible: 18
Number of APNIC addresses announced to Internet: 595474464
Equivalent to 35 /8s, 126 /16s and 56 /24s
Percentage of available APNIC address space announced: 75.5
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: 140487
Total ARIN prefixes after maximum aggregation: 71719
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 110994
Unique aggregates announced from the ARIN address blocks: 44983
ARIN Region origin ASes present in the Internet Routing Table: 14247
ARIN Prefixes per ASN: 7.79
ARIN Region origin ASes announcing only one prefix: 5417
ARIN Region transit ASes present in the Internet Routing Table: 1472
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 23
Number of ARIN addresses announced to Internet: 796431232
Equivalent to 47 /8s, 120 /16s and 147 /24s
Percentage of available ARIN address space announced: 63.3
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: 82683
Total RIPE prefixes after maximum aggregation: 47102
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 76020
Unique aggregates announced from the RIPE address blocks: 49879
RIPE Region origin ASes present in the Internet Routing Table: 15397
RIPE Prefixes per ASN: 4.94
RIPE Region origin ASes announcing only one prefix: 7770
RIPE Region transit ASes present in the Internet Routing Table: 2401
Average RIPE Region AS path length visible: 4.6
Max RIPE Region AS path length visible: 23
Number of RIPE addresses announced to Internet: 480842752
Equivalent to 28 /8s, 169 /16s and 20 /24s
Percentage of available RIPE address space announced: 77.5
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: 31952
Total LACNIC prefixes after maximum aggregation: 7382
LACNIC Deaggregation factor: 4.33
Prefixes being announced from the LACNIC address blocks: 30818
Unique aggregates announced from the LACNIC address blocks: 16131
LACNIC Region origin ASes present in the Internet Routing Table: 1438
LACNIC Prefixes per ASN: 21.43
LACNIC Region origin ASes announcing only one prefix: 431
LACNIC Region transit ASes present in the Internet Routing Table: 264
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 81386624
Equivalent to 4 /8s, 217 /16s and 220 /24s
Percentage of available LACNIC address space announced: 53.9
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: 7497
Total AfriNIC prefixes after maximum aggregation: 1812
AfriNIC Deaggregation factor: 4.14
Prefixes being announced from the AfriNIC address blocks: 5880
Unique aggregates announced from the AfriNIC address blocks: 1850
AfriNIC Region origin ASes present in the Internet Routing Table: 434
AfriNIC Prefixes per ASN: 13.55
AfriNIC Region origin ASes announcing only one prefix: 129
AfriNIC Region transit ASes present in the Internet Routing Table: 94
Average AfriNIC Region AS path length visible: 5.3
Max AfriNIC Region AS path length visible: 31
Number of AfriNIC addresses announced to Internet: 22031360
Equivalent to 1 /8s, 80 /16s and 44 /24s
Percentage of available AfriNIC address space announced: 32.8
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 2421 9508 892 Korea Telecom (KIX)
7545 1594 301 84 TPG Internet Pty Ltd
4755 1473 653 157 TATA Communications formerly
17974 1413 468 29 PT TELEKOMUNIKASI INDONESIA
24560 1120 324 186 Bharti Airtel Ltd., Telemedia
9583 1048 77 488 Sify Limited
4808 1046 2142 294 CNCGROUP IP network: China169
9829 1005 868 53 BSNL National Internet Backbo
17488 944 162 100 Hathway IP Over Cable Interne
18101 938 117 144 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
6389 3681 3839 259 bellsouth.net, inc.
4323 2584 1109 403 Time Warner Telecom
19262 1829 4953 282 Verizon Global Networks
1785 1792 681 131 PaeTec Communications, Inc.
6478 1538 298 75 AT&T Worldnet Services
20115 1526 1534 650 Charter Communications
18566 1524 326 180 Covad Communications
7018 1365 6706 887 AT&T WorldNet Services
11492 1311 236 66 Cable One
2386 1294 537 934 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 515 1780 318 UPC Distribution Services
9198 470 267 15 Kazakhtelecom Data Network Ad
3292 450 1996 389 TDC Tele Danmark
34984 449 95 200 BILISIM TELEKOM
8866 443 133 23 Bulgarian Telecommunication C
20940 411 98 314 Akamai Technologies European
3320 407 7604 353 Deutsche Telekom AG
8551 403 353 46 Bezeq International
12479 401 577 6 Uni2 Autonomous System
8402 397 320 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 1384 258 163 TVCABLE BOGOTA
8151 1243 2700 368 UniNet S.A. de C.V.
28573 1234 963 83 NET Servicos de Comunicao S.A
6503 1181 354 72 AVANTEL, S.A.
7303 919 464 148 Telecom Argentina Stet-France
14420 644 56 93 CORPORACION NACIONAL DE TELEC
22047 541 310 15 VTR PUNTO NET S.A.
3816 514 225 97 Empresa Nacional de Telecomun
11172 488 83 82 Servicios Alestra S.A de C.V
7738 479 922 30 Telecomunicacoes da Bahia 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 791 445 11 TEDATA
24863 762 147 36 LINKdotNET AS number
15475 419 90 8 Nile Online
36992 300 271 14 Etisalat MISR
3741 266 987 228 The Internet Solution
33776 230 13 5 Starcomms Nigeria Limited
24835 228 78 10 RAYA Telecom - Egypt
6713 204 199 11 Itissalat Al-MAGHRIB
29571 192 17 11 Ci Telecom Autonomous system
16637 141 422 85 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 3681 3839 259 bellsouth.net, inc.
4323 2584 1109 403 Time Warner Telecom
4766 2421 9508 892 Korea Telecom (KIX)
19262 1829 4953 282 Verizon Global Networks
1785 1792 681 131 PaeTec Communications, Inc.
7545 1594 301 84 TPG Internet Pty Ltd
6478 1538 298 75 AT&T Worldnet Services
20115 1526 1534 650 Charter Communications
18566 1524 326 180 Covad Communications
4755 1473 653 157 TATA Communications formerly
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 2584 2181 Time Warner Telecom
1785 1792 1661 PaeTec Communications, Inc.
19262 1829 1547 Verizon Global Networks
4766 2421 1529 Korea Telecom (KIX)
7545 1594 1510 TPG Internet Pty Ltd
6478 1538 1463 AT&T Worldnet Services
17974 1413 1384 PT TELEKOMUNIKASI INDONESIA
18566 1524 1344 Covad Communications
4755 1473 1316 TATA Communications formerly
11492 1311 1245 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
1.5.0.0/16 38639 NTT Communications Corporatio
1.6.0.0/15 38639 NTT Communications Corporatio
1.8.0.0/16 38639 NTT Communications Corporatio
1.20.0.0/16 38639 NTT Communications Corporatio
1.32.0.0/16 38639 NTT Communications Corporatio
1.37.0.0/16 38639 NTT Communications Corporatio
1.187.0.0/16 38639 NTT Communications Corporatio
14.0.0.0/24 38639 NTT Communications Corporatio
14.0.1.0/24 38639 NTT Communications Corporatio
14.0.2.0/23 38639 NTT Communications Corporatio
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 /8:24 /9:11 /10:26 /11:73 /12:216
/13:447 /14:768 /15:1370 /16:11556 /17:5669 /18:9352
/19:19025 /20:24651 /21:25208 /22:33478 /23:32020 /24:182909
/25:1136 /26:1330 /27:720 /28:42 /29:9 /30:3
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2271 3681 bellsouth.net, inc.
18566 1502 1524 Covad Communications
6478 1492 1538 AT&T Worldnet Services
4323 1391 2584 Time Warner Telecom
10620 1275 1384 TVCABLE BOGOTA
11492 1268 1311 Cable One
7011 1058 1158 Citizens Utilities
1785 1055 1792 PaeTec Communications, Inc.
6503 959 1181 AVANTEL, S.A.
19262 941 1829 Verizon Global Networks
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:271 2:57 4:14 5:1 8:340 12:2027
13:1 14:429 15:15 16:3 17:8 20:9
23:3 24:1515 27:608 31:2 32:60 33:4
34:2 36:2 37:1 38:714 39:1 40:101
41:2306 42:13 44:3 46:703 47:4 49:164
50:197 52:13 55:2 56:2 57:32 58:860
59:495 60:386 61:1133 62:1013 63:1922 64:3867
65:2351 66:4339 67:1775 68:1063 69:2886 70:701
71:399 72:2007 73:1 74:2351 75:283 76:341
77:837 78:699 79:445 80:1093 81:801 82:514
83:462 84:644 85:1044 86:571 87:753 88:350
89:1568 90:174 91:3593 92:486 93:1045 94:1216
95:778 96:471 97:251 98:805 99:34 101:58
106:1 107:4 108:129 109:905 110:477 111:720
112:320 113:379 114:496 115:711 116:958 117:678
118:719 119:1036 120:256 121:753 122:1615 123:1042
124:1298 125:1262 128:266 129:168 130:171 131:560
132:110 133:20 134:220 135:49 136:212 137:146
138:298 139:110 140:487 141:203 142:377 143:379
144:493 145:52 146:424 147:194 148:640 149:276
150:161 151:229 152:298 153:180 154:3 155:377
156:179 157:345 158:131 159:371 160:312 161:211
162:277 163:160 164:487 165:352 166:496 167:410
168:728 169:156 170:760 171:69 172:2 173:1259
174:516 175:328 177:35 178:804 180:813 181:4
182:384 183:243 184:233 186:1044 187:837 188:919
189:1032 190:4561 192:5756 193:4780 194:3483 195:2948
196:1171 197:4 198:3581 199:3867 200:5585 201:1585
202:8302 203:8484 204:4106 205:2305 206:2653 207:3071
208:3909 209:3484 210:2686 211:1348 212:1932 213:1716
214:751 215:63 216:4844 217:1653 218:554 219:382
220:1199 221:476 222:318 223:101
End of report
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