Weekly Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri Aug 13 18:19:28 UTC 2010
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.apnic.net.
If you have any comments please contact Philip Smith <pfs at cisco.com>.
Routing Table Report 04:00 +10GMT Sat 14 Aug, 2010
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 327733
Prefixes after maximum aggregation: 151079
Deaggregation factor: 2.17
Unique aggregates announced to Internet: 160689
Total ASes present in the Internet Routing Table: 34560
Prefixes per ASN: 9.48
Origin-only ASes present in the Internet Routing Table: 29983
Origin ASes announcing only one prefix: 14554
Transit ASes present in the Internet Routing Table: 4577
Transit-only ASes present in the Internet Routing Table: 101
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 24
Max AS path prepend of ASN (41664) 21
Prefixes from unregistered ASNs in the Routing Table: 860
Unregistered ASNs in the Routing Table: 433
Number of 32-bit ASNs allocated by the RIRs: 727
Prefixes from 32-bit ASNs in the Routing Table: 904
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 176
Number of addresses announced to Internet: 2288066240
Equivalent to 136 /8s, 97 /16s and 30 /24s
Percentage of available address space announced: 61.7
Percentage of allocated address space announced: 65.9
Percentage of available address space allocated: 93.7
Percentage of address space in use by end-sites: 84.2
Total number of prefixes smaller than registry allocations: 155492
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 79750
Total APNIC prefixes after maximum aggregation: 27336
APNIC Deaggregation factor: 2.92
Prefixes being announced from the APNIC address blocks: 76668
Unique aggregates announced from the APNIC address blocks: 33794
APNIC Region origin ASes present in the Internet Routing Table: 4155
APNIC Prefixes per ASN: 18.45
APNIC Region origin ASes announcing only one prefix: 1159
APNIC Region transit ASes present in the Internet Routing Table: 641
Average APNIC Region AS path length visible: 3.7
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 539648800
Equivalent to 32 /8s, 42 /16s and 99 /24s
Percentage of available APNIC address space announced: 76.6
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, 43/8, 49/8, 58/8, 59/8,
60/8, 61/8, 101/8, 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: 135111
Total ARIN prefixes after maximum aggregation: 69791
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 107970
Unique aggregates announced from the ARIN address blocks: 42371
ARIN Region origin ASes present in the Internet Routing Table: 13847
ARIN Prefixes per ASN: 7.80
ARIN Region origin ASes announcing only one prefix: 5310
ARIN Region transit ASes present in the Internet Routing Table: 1364
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 22
Number of ARIN addresses announced to Internet: 731174304
Equivalent to 43 /8s, 148 /16s and 213 /24s
Percentage of available ARIN address space announced: 62.3
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, 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, 54/8,
55/8, 56/8, 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, 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: 74801
Total RIPE prefixes after maximum aggregation: 43787
RIPE Deaggregation factor: 1.71
Prefixes being announced from the RIPE address blocks: 68193
Unique aggregates announced from the RIPE address blocks: 44831
RIPE Region origin ASes present in the Internet Routing Table: 14675
RIPE Prefixes per ASN: 4.65
RIPE Region origin ASes announcing only one prefix: 7553
RIPE Region transit ASes present in the Internet Routing Table: 2201
Average RIPE Region AS path length visible: 3.9
Max RIPE Region AS path length visible: 24
Number of RIPE addresses announced to Internet: 434991872
Equivalent to 25 /8s, 237 /16s and 115 /24s
Percentage of available RIPE address space announced: 76.3
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, 196608-197631
RIPE Address Blocks 2/8, 25/8, 31/8, 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,
193/8, 194/8, 195/8, 212/8, 213/8, 217/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 29552
Total LACNIC prefixes after maximum aggregation: 7056
LACNIC Deaggregation factor: 4.19
Prefixes being announced from the LACNIC address blocks: 28053
Unique aggregates announced from the LACNIC address blocks: 14979
LACNIC Region origin ASes present in the Internet Routing Table: 1321
LACNIC Prefixes per ASN: 21.24
LACNIC Region origin ASes announcing only one prefix: 407
LACNIC Region transit ASes present in the Internet Routing Table: 235
Average LACNIC Region AS path length visible: 3.9
Max LACNIC Region AS path length visible: 20
Number of LACNIC addresses announced to Internet: 76476928
Equivalent to 4 /8s, 142 /16s and 242 /24s
Percentage of available LACNIC address space announced: 57.0
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
262144-263167 plus ERX transfers
LACNIC Address Blocks 177/8, 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: 7368
Total AfriNIC prefixes after maximum aggregation: 1881
AfriNIC Deaggregation factor: 3.92
Prefixes being announced from the AfriNIC address blocks: 5700
Unique aggregates announced from the AfriNIC address blocks: 1657
AfriNIC Region origin ASes present in the Internet Routing Table: 392
AfriNIC Prefixes per ASN: 14.54
AfriNIC Region origin ASes announcing only one prefix: 125
AfriNIC Region transit ASes present in the Internet Routing Table: 89
Average AfriNIC Region AS path length visible: 3.7
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 19938304
Equivalent to 1 /8s, 48 /16s and 60 /24s
Percentage of available AfriNIC address space announced: 59.4
AfriNIC AS Blocks 36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks 41/8, 197/8,
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4766 1862 8410 495 Korea Telecom (KIX)
4755 1481 298 164 TATA Communications formerly
7545 1376 234 87 TPG Internet Pty Ltd
17488 1343 149 127 Hathway IP Over Cable Interne
17974 1216 292 74 PT TELEKOMUNIKASI INDONESIA
24560 1005 304 181 Bharti Airtel Ltd., Telemedia
9583 1003 74 487 Sify Limited
4808 899 1671 245 CNCGROUP IP network: China169
9829 818 687 34 BSNL National Internet Backbo
4134 787 22220 415 CHINANET-BACKBONE
Complete listing at http://thyme.apnic.net/current/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3856 3684 276 bellsouth.net, inc.
4323 2730 1116 393 Time Warner Telecom
19262 1946 4613 279 Verizon Global Networks
1785 1785 698 129 PaeTec Communications, Inc.
20115 1489 1526 653 Charter Communications
7018 1478 5734 952 AT&T WorldNet Services
6478 1289 255 145 AT&T Worldnet Services
2386 1284 553 907 AT&T Data Communications Serv
22773 1176 2858 61 Cox Communications, Inc.
11492 1175 209 90 Cable One
Complete listing at http://thyme.apnic.net/current/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3292 449 2026 390 TDC Tele Danmark
30890 443 99 211 Evolva Telecom
702 414 1870 326 UUNET - Commercial IP service
8866 403 117 18 Bulgarian Telecommunication C
8551 401 353 46 Bezeq International
3320 376 7329 325 Deutsche Telekom AG
3301 373 1415 328 TeliaNet Sweden
34984 367 89 183 BILISIM TELEKOM
12479 352 576 5 Uni2 Autonomous System
3215 322 3218 94 France Telecom Transpac
Complete listing at http://thyme.apnic.net/current/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 1527 3049 247 UniNet S.A. de C.V.
10620 1091 244 150 TVCABLE BOGOTA
28573 1067 833 111 NET Servicos de Comunicao S.A
6503 811 187 264 AVANTEL, S.A.
7303 788 408 99 Telecom Argentina Stet-France
22047 550 310 15 VTR PUNTO NET S.A.
14420 547 35 75 CORPORACION NACIONAL DE TELEC
7738 477 922 30 Telecomunicacoes da Bahia S.A
3816 474 208 98 Empresa Nacional de Telecomun
11172 447 99 76 Servicios Alestra S.A de C.V
Complete listing at http://thyme.apnic.net/current/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8452 1168 445 10 TEDATA
24863 728 147 39 LINKdotNET AS number
36992 655 279 183 Etisalat MISR
3741 270 898 232 The Internet Solution
33776 206 12 12 Starcomms Nigeria Limited
2018 197 277 64 Tertiary Education Network
6713 195 186 16 Itissalat Al-MAGHRIB
29571 192 19 11 Ci Telecom Autonomous system
24835 188 78 9 RAYA Telecom - Egypt
16637 147 440 95 MTN Network Solutions
Complete listing at http://thyme.apnic.net/current/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3856 3684 276 bellsouth.net, inc.
4323 2730 1116 393 Time Warner Telecom
19262 1946 4613 279 Verizon Global Networks
4766 1862 8410 495 Korea Telecom (KIX)
1785 1785 698 129 PaeTec Communications, Inc.
8151 1527 3049 247 UniNet S.A. de C.V.
20115 1489 1526 653 Charter Communications
4755 1481 298 164 TATA Communications formerly
7018 1478 5734 952 AT&T WorldNet Services
7545 1376 234 87 TPG Internet Pty Ltd
Complete listing at http://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 2730 2337 Time Warner Telecom
19262 1946 1667 Verizon Global Networks
1785 1785 1656 PaeTec Communications, Inc.
4766 1862 1367 Korea Telecom (KIX)
4755 1481 1317 TATA Communications formerly
7545 1376 1289 TPG Internet Pty Ltd
8151 1527 1280 UniNet S.A. de C.V.
17488 1343 1216 Hathway IP Over Cable Interne
8452 1168 1158 TEDATA
6478 1289 1144 AT&T Worldnet Services
Complete listing at http://thyme.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
22015 UNALLOCATED 8.22.137.0/24 14989 Broadview Networks
16927 UNALLOCATED 12.0.252.0/23 7018 AT&T WorldNet Servic
15132 UNALLOCATED 12.9.150.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.14.170.0/24 7018 AT&T WorldNet Servic
23054 UNALLOCATED 12.18.240.0/24 7018 AT&T WorldNet Servic
33198 UNALLOCATED 12.19.149.0/24 701 UUNET Technologies,
36178 UNALLOCATED 12.20.60.0/23 6128 Cablevision Systems
13746 UNALLOCATED 12.24.56.0/24 7018 AT&T WorldNet Servic
32567 UNALLOCATED 12.25.107.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.152.0/24 7018 AT&T WorldNet Servic
Complete listing at http://thyme.apnic.net/current/data-badAS
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
31.0.0.0/16 12654 RIPE NCC RIS Project
31.1.0.0/21 12654 RIPE NCC RIS Project
31.1.24.0/24 12654 RIPE NCC RIS Project
41.222.79.0/24 36938 >>UNKNOWN<<
41.223.92.0/22 36936 >>UNKNOWN<<
41.223.188.0/24 22351 Intelsat
41.223.189.0/24 6453 Teleglobe Inc.
41.223.196.0/24 36990 Alkan Telecom Ltd
41.223.197.0/24 36990 Alkan Telecom Ltd
41.223.198.0/24 36990 Alkan Telecom Ltd
Complete listing at http://thyme.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 /8:21 /9:10 /10:25 /11:67 /12:198
/13:412 /14:718 /15:1304 /16:11200 /17:5397 /18:9236
/19:18562 /20:23299 /21:23290 /22:30291 /23:29761 /24:170761
/25:1058 /26:1205 /27:741 /28:117 /29:47 /30:6
/31:0 /32:7
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2466 3856 bellsouth.net, inc.
4766 1488 1862 Korea Telecom (KIX)
4323 1393 2730 Time Warner Telecom
1785 1252 1785 PaeTec Communications, Inc.
17488 1086 1343 Hathway IP Over Cable Interne
11492 1083 1175 Cable One
18566 1068 1087 Covad Communications
8452 1057 1168 TEDATA
10620 1005 1091 TVCABLE BOGOTA
19262 913 1946 Verizon Global Networks
Complete listing at http://thyme.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:44 2:2 4:13 8:294 12:2016 13:7
14:1 15:21 16:3 17:9 20:6 24:1442
27:294 31:1 32:61 33:22 38:695 40:97
41:2504 44:3 46:23 47:16 52:12 55:7
56:2 57:28 58:780 59:508 60:460 61:1073
62:1059 63:1972 64:3730 65:2321 66:4026 67:1838
68:1102 69:2765 70:744 71:444 72:1944 73:2
74:2303 75:253 76:326 77:890 78:620 79:433
80:1015 81:801 82:499 83:488 84:689 85:1043
86:461 87:690 88:304 89:1526 90:99 91:2959
92:412 93:1000 94:1173 95:667 96:530 97:212
98:626 99:33 108:109 109:614 110:435 111:537
112:281 113:310 114:435 115:576 116:1094 117:654
118:490 119:889 120:139 121:725 122:1531 123:953
124:1129 125:1242 128:227 129:162 130:194 131:558
132:247 133:16 134:195 135:45 136:240 137:136
138:270 139:105 140:477 141:197 142:340 143:376
144:473 145:52 146:425 147:171 148:676 149:272
150:154 151:228 152:297 153:168 154:3 155:358
156:166 157:327 158:119 159:361 160:316 161:180
162:252 163:173 164:413 165:366 166:463 167:413
168:646 169:159 170:716 171:59 172:2 173:978
174:516 175:160 176:1 177:1 178:341 180:514
181:1 182:179 183:239 184:147 186:549 187:418
188:806 189:765 190:3899 192:5755 193:4732 194:3400
195:2790 196:1181 198:3567 199:3534 200:5354 201:1588
202:8016 203:8273 204:4035 205:2403 206:2484 207:3067
208:3881 209:3470 210:2546 211:1305 212:1719 213:1675
214:659 215:69 216:4679 217:1546 218:502 219:379
220:1139 221:402 222:316 223:2
End of report
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