[lacnog] Weekly Routing Table Report
Routing Analysis Role Account
cscora en apnic.net
Vie Abr 15 15:40:33 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 16 Apr, 2011
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 354448
Prefixes after maximum aggregation: 160446
Deaggregation factor: 2.21
Unique aggregates announced to Internet: 175187
Total ASes present in the Internet Routing Table: 37330
Prefixes per ASN: 9.49
Origin-only ASes present in the Internet Routing Table: 31290
Origin ASes announcing only one prefix: 15055
Transit ASes present in the Internet Routing Table: 5039
Transit-only ASes present in the Internet Routing Table: 133
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: 598
Unregistered ASNs in the Routing Table: 263
Number of 32-bit ASNs allocated by the RIRs: 1295
Number of 32-bit ASNs visible in the Routing Table: 1001
Prefixes from 32-bit ASNs in the Routing Table: 2210
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 154
Number of addresses announced to Internet: 2411560512
Equivalent to 143 /8s, 189 /16s and 126 /24s
Percentage of available address space announced: 65.1
Percentage of allocated address space announced: 65.1
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: 147006
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 88171
Total APNIC prefixes after maximum aggregation: 29869
APNIC Deaggregation factor: 2.95
Prefixes being announced from the APNIC address blocks: 85167
Unique aggregates announced from the APNIC address blocks: 37065
APNIC Region origin ASes present in the Internet Routing Table: 4407
APNIC Prefixes per ASN: 19.33
APNIC Region origin ASes announcing only one prefix: 1227
APNIC Region transit ASes present in the Internet Routing Table: 699
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 20
Number of APNIC region 32-bit ASNs visible in the Routing Table: 48
Number of APNIC addresses announced to Internet: 609096480
Equivalent to 36 /8s, 78 /16s and 19 /24s
Percentage of available APNIC address space announced: 77.2
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: 139725
Total ARIN prefixes after maximum aggregation: 71044
ARIN Deaggregation factor: 1.97
Prefixes being announced from the ARIN address blocks: 112194
Unique aggregates announced from the ARIN address blocks: 45081
ARIN Region origin ASes present in the Internet Routing Table: 14325
ARIN Prefixes per ASN: 7.83
ARIN Region origin ASes announcing only one prefix: 5472
ARIN Region transit ASes present in the Internet Routing Table: 1489
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: 797865344
Equivalent to 47 /8s, 142 /16s and 117 /24s
Percentage of available ARIN address space announced: 63.4
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: 83950
Total RIPE prefixes after maximum aggregation: 47756
RIPE Deaggregation factor: 1.76
Prefixes being announced from the RIPE address blocks: 77071
Unique aggregates announced from the RIPE address blocks: 50757
RIPE Region origin ASes present in the Internet Routing Table: 15521
RIPE Prefixes per ASN: 4.97
RIPE Region origin ASes announcing only one prefix: 7794
RIPE Region transit ASes present in the Internet Routing Table: 2431
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: 744
Number of RIPE addresses announced to Internet: 466827392
Equivalent to 27 /8s, 211 /16s and 56 /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: 32396
Total LACNIC prefixes after maximum aggregation: 7436
LACNIC Deaggregation factor: 4.36
Prefixes being announced from the LACNIC address blocks: 31349
Unique aggregates announced from the LACNIC address blocks: 16421
LACNIC Region origin ASes present in the Internet Routing Table: 1439
LACNIC Prefixes per ASN: 21.79
LACNIC Region origin ASes announcing only one prefix: 429
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: 193
Number of LACNIC addresses announced to Internet: 81899648
Equivalent to 4 /8s, 225 /16s and 176 /24s
Percentage of available LACNIC address space announced: 54.2
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: 7714
Total AfriNIC prefixes after maximum aggregation: 1829
AfriNIC Deaggregation factor: 4.22
Prefixes being announced from the AfriNIC address blocks: 6082
Unique aggregates announced from the AfriNIC address blocks: 1881
AfriNIC Region origin ASes present in the Internet Routing Table: 448
AfriNIC Prefixes per ASN: 13.58
AfriNIC Region origin ASes announcing only one prefix: 133
AfriNIC Region transit ASes present in the Internet Routing Table: 99
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: 22753536
Equivalent to 1 /8s, 91 /16s and 49 /24s
Percentage of available AfriNIC address space announced: 33.9
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 2433 9484 902 Korea Telecom (KIX)
17974 1813 515 29 PT TELEKOMUNIKASI INDONESIA
7545 1543 300 80 TPG Internet Pty Ltd
4755 1445 638 166 TATA Communications formerly
24560 1137 322 203 Bharti Airtel Ltd., Telemedia
4808 1064 2140 293 CNCGROUP IP network: China169
9583 1055 77 496 Sify Limited
9829 1008 870 50 BSNL National Internet Backbo
17488 942 162 98 Hathway IP Over Cable Interne
18101 934 116 139 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 3662 3822 255 bellsouth.net, inc.
4323 2661 1090 396 Time Warner Telecom
1785 1788 681 128 PaeTec Communications, Inc.
18566 1759 349 229 Covad Communications
6478 1623 307 37 AT&T Worldnet Services
20115 1535 1552 639 Charter Communications
19262 1495 4949 298 Verizon Global Networks
7018 1350 6801 878 AT&T WorldNet Services
22773 1298 2865 84 Cox Communications, Inc.
2386 1269 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 518 1780 320 UPC Distribution Services
34984 505 98 183 BILISIM TELEKOM
29049 467 33 34 AzerSat LLC.
3292 454 1997 391 TDC Tele Danmark
8866 446 134 26 Bulgarian Telecommunication C
20940 436 126 335 Akamai Technologies European
3320 418 7607 364 Deutsche Telekom AG
12479 406 577 6 Uni2 Autonomous System
8551 403 353 46 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 1426 265 157 TVCABLE BOGOTA
28573 1274 972 86 NET Servicos de Comunicao S.A
8151 1252 2686 374 UniNet S.A. de C.V.
7303 924 465 147 Telecom Argentina Stet-France
6503 901 354 72 AVANTEL, S.A.
14420 663 53 91 CORPORACION NACIONAL DE TELEC
22047 568 310 15 VTR PUNTO NET S.A.
3816 516 225 98 Empresa Nacional de Telecomun
11172 487 99 81 Servicios Alestra S.A de C.V
27947 480 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 840 445 11 TEDATA
24863 778 147 39 LINKdotNET AS number
15475 422 90 8 Nile Online
36992 295 287 12 Etisalat MISR
3741 266 985 227 The Internet Solution
6713 235 215 13 Itissalat Al-MAGHRIB
33776 227 13 5 Starcomms Nigeria Limited
24835 222 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 3662 3822 255 bellsouth.net, inc.
4323 2661 1090 396 Time Warner Telecom
4766 2433 9484 902 Korea Telecom (KIX)
23456 2210 644 1206 32-bit ASN transition
17974 1813 515 29 PT TELEKOMUNIKASI INDONESIA
1785 1788 681 128 PaeTec Communications, Inc.
18566 1759 349 229 Covad Communications
6478 1623 307 37 AT&T Worldnet Services
7545 1543 300 80 TPG Internet Pty Ltd
20115 1535 1552 639 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 2661 2265 Time Warner Telecom
17974 1813 1784 PT TELEKOMUNIKASI INDONESIA
1785 1788 1660 PaeTec Communications, Inc.
6478 1623 1586 AT&T Worldnet Services
4766 2433 1531 Korea Telecom (KIX)
18566 1759 1530 Covad Communications
7545 1543 1463 TPG Internet Pty Ltd
4755 1445 1279 TATA Communications formerly
10620 1426 1269 TVCABLE BOGOTA
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
45083 UNALLOCATED 1.45.0.0/16 4808 CNCGROUP IP network:
45083 UNALLOCATED 1.45.92.0/22 4808 CNCGROUP IP network:
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
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
31.7.168.0/21 48057 Company for interactive techn
31.10.32.0/20 42004 Unlimited Group
31.10.56.0/21 23456 32-bit ASN transition
31.134.48.0/20 48559 Infomex Sp. z o.o.
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 /10:26 /11:76 /12:219
/13:452 /14:774 /15:1376 /16:11604 /17:5737 /18:9469
/19:19145 /20:25180 /21:25557 /22:33681 /23:32570 /24:185400
/25:1120 /26:1274 /27:701 /28:40 /29:8 /30:2
/31:0 /32:6
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2259 3662 bellsouth.net, inc.
18566 1727 1759 Covad Communications
6478 1577 1623 AT&T Worldnet Services
4323 1356 2661 Time Warner Telecom
10620 1316 1426 TVCABLE BOGOTA
11492 1211 1262 Cable One
23456 1143 2210 32-bit ASN transition
7011 1062 1161 Citizens Utilities
1785 1058 1788 PaeTec Communications, Inc.
22773 842 1298 Cox Communications, Inc.
Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:256 2:62 4:14 5:1 8:347 12:2000
13:1 14:436 15:15 16:3 17:8 20:9
23:5 24:1604 27:721 31:220 32:60 33:3
34:2 37:1 38:764 40:101 41:2402 42:1
44:3 46:851 47:4 49:173 50:358 52:13
55:7 56:2 57:27 58:844 59:478 60:387
61:1238 62:1008 63:1920 64:3916 65:2325 66:4350
67:1814 68:1082 69:2956 70:700 71:345 72:1906
73:1 74:2337 75:299 76:337 77:840 78:688
79:460 80:1088 81:828 82:505 83:455 84:646
85:1067 86:564 87:761 88:339 89:1584 90:181
91:3711 92:513 93:1053 94:1257 95:792 96:453
97:250 98:821 99:35 101:62 103:1 106:1
107:4 108:80 109:954 110:543 111:694 112:325
113:389 114:524 115:681 116:940 117:675 118:805
119:1137 120:290 121:675 122:1631 123:1062 124:1247
125:1266 128:265 129:164 130:172 131:562 132:113
133:20 134:217 135:49 136:213 137:142 138:301
139:103 140:487 141:174 142:398 143:394 144:484
145:53 146:440 147:204 148:597 149:243 150:171
151:187 152:307 153:180 154:3 155:394 156:190
157:354 158:132 159:382 160:315 161:245 162:277
163:164 164:488 165:350 166:514 167:419 168:725
169:154 170:780 171:75 172:1 173:1492 174:530
175:356 177:71 178:852 180:815 181:7 182:419
183:196 184:243 185:1 186:1139 187:807 188:988
189:1001 190:4841 192:5784 193:4816 194:3468 195:2966
196:1208 197:16 198:3568 199:3919 200:5531 201:1500
202:8347 203:8452 204:4140 205:2323 206:2730 207:3027
208:3951 209:3501 210:2728 211:1361 212:1977 213:1719
214:732 215:67 216:4863 217:1659 218:556 219:385
220:1195 221:479 222:341 223:137
End of report
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