Weekly Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri Sep 24 18:53:04 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 25 Sep, 2010
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 331883
Prefixes after maximum aggregation: 152525
Deaggregation factor: 2.18
Unique aggregates announced to Internet: 161648
Total ASes present in the Internet Routing Table: 34863
Prefixes per ASN: 9.52
Origin-only ASes present in the Internet Routing Table: 30227
Origin ASes announcing only one prefix: 14677
Transit ASes present in the Internet Routing Table: 4636
Transit-only ASes present in the Internet Routing Table: 101
Average AS path length visible in the Internet Routing Table: 3.7
Max AS path length visible: 24
Max AS path prepend of ASN (41664) 21
Prefixes from unregistered ASNs in the Routing Table: 3160
Unregistered ASNs in the Routing Table: 1399
Number of 32-bit ASNs allocated by the RIRs: 794
Prefixes from 32-bit ASNs in the Routing Table: 1017
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 228
Number of addresses announced to Internet: 2273798848
Equivalent to 135 /8s, 135 /16s and 106 /24s
Percentage of available address space announced: 61.3
Percentage of allocated address space announced: 65.5
Percentage of available address space allocated: 93.7
Percentage of address space in use by end-sites: 84.9
Total number of prefixes smaller than registry allocations: 156837
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 80968
Total APNIC prefixes after maximum aggregation: 27719
APNIC Deaggregation factor: 2.92
Prefixes being announced from the APNIC address blocks: 77853
Unique aggregates announced from the APNIC address blocks: 32742
APNIC Region origin ASes present in the Internet Routing Table: 4196
APNIC Prefixes per ASN: 18.55
APNIC Region origin ASes announcing only one prefix: 1167
APNIC Region transit ASes present in the Internet Routing Table: 648
Average APNIC Region AS path length visible: 3.7
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 551901216
Equivalent to 32 /8s, 229 /16s and 88 /24s
Percentage of available APNIC address space announced: 78.3
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: 135903
Total ARIN prefixes after maximum aggregation: 70118
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 108637
Unique aggregates announced from the ARIN address blocks: 43091
ARIN Region origin ASes present in the Internet Routing Table: 13925
ARIN Prefixes per ASN: 7.80
ARIN Region origin ASes announcing only one prefix: 5334
ARIN Region transit ASes present in the Internet Routing Table: 1380
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 22
Number of ARIN addresses announced to Internet: 734124576
Equivalent to 43 /8s, 193 /16s and 218 /24s
Percentage of available ARIN address space announced: 62.5
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, 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: 76059
Total RIPE prefixes after maximum aggregation: 44153
RIPE Deaggregation factor: 1.72
Prefixes being announced from the RIPE address blocks: 69455
Unique aggregates announced from the RIPE address blocks: 45623
RIPE Region origin ASes present in the Internet Routing Table: 14816
RIPE Prefixes per ASN: 4.69
RIPE Region origin ASes announcing only one prefix: 7631
RIPE Region transit ASes present in the Internet Routing Table: 2237
Average RIPE Region AS path length visible: 3.9
Max RIPE Region AS path length visible: 24
Number of RIPE addresses announced to Internet: 439384960
Equivalent to 26 /8s, 48 /16s and 123 /24s
Percentage of available RIPE address space announced: 77.0
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: 30249
Total LACNIC prefixes after maximum aggregation: 7285
LACNIC Deaggregation factor: 4.15
Prefixes being announced from the LACNIC address blocks: 28745
Unique aggregates announced from the LACNIC address blocks: 15259
LACNIC Region origin ASes present in the Internet Routing Table: 1354
LACNIC Prefixes per ASN: 21.23
LACNIC Region origin ASes announcing only one prefix: 422
LACNIC Region transit ASes present in the Internet Routing Table: 232
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 19
Number of LACNIC addresses announced to Internet: 75452800
Equivalent to 4 /8s, 127 /16s and 81 /24s
Percentage of available LACNIC address space announced: 56.2
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: 7427
Total AfriNIC prefixes after maximum aggregation: 1881
AfriNIC Deaggregation factor: 3.95
Prefixes being announced from the AfriNIC address blocks: 5745
Unique aggregates announced from the AfriNIC address blocks: 1675
AfriNIC Region origin ASes present in the Internet Routing Table: 404
AfriNIC Prefixes per ASN: 14.22
AfriNIC Region origin ASes announcing only one prefix: 123
AfriNIC Region transit ASes present in the Internet Routing Table: 93
Average AfriNIC Region AS path length visible: 3.8
Max AfriNIC Region AS path length visible: 17
Number of AfriNIC addresses announced to Internet: 20374016
Equivalent to 1 /8s, 54 /16s and 226 /24s
Percentage of available AfriNIC address space announced: 60.7
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 1859 9436 501 Korea Telecom (KIX)
7545 1395 297 83 TPG Internet Pty Ltd
4755 1348 368 160 TATA Communications formerly
17488 1347 155 124 Hathway IP Over Cable Interne
17974 1240 299 70 PT TELEKOMUNIKASI INDONESIA
24560 1036 304 177 Bharti Airtel Ltd., Telemedia
9583 1015 75 488 Sify Limited
4808 932 1714 261 CNCGROUP IP network: China169
18101 883 100 132 Reliance Infocom Ltd Internet
9829 823 692 33 BSNL National Internet Backbo
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 3780 3667 278 bellsouth.net, inc.
4323 2708 1107 388 Time Warner Telecom
19262 1818 4676 286 Verizon Global Networks
1785 1797 698 132 PaeTec Communications, Inc.
20115 1494 1531 652 Charter Communications
7018 1461 5747 947 AT&T WorldNet Services
6478 1352 275 123 AT&T Worldnet Services
2386 1293 554 912 AT&T Data Communications Serv
11492 1207 229 85 Cable One
22773 1195 2858 61 Cox Communications, Inc.
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 447 2026 388 TDC Tele Danmark
30890 442 99 211 Evolva Telecom
8866 405 117 19 Bulgarian Telecommunication C
702 404 1868 318 UUNET - Commercial IP service
8551 402 353 46 Bezeq International
3301 378 1688 333 TeliaNet Sweden
34984 376 90 185 BILISIM TELEKOM
3320 373 7328 323 Deutsche Telekom AG
12479 361 576 5 Uni2 Autonomous System
31148 349 18 75 FreeNet ISP
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 1341 2559 367 UniNet S.A. de C.V.
10620 1319 247 148 TVCABLE BOGOTA
28573 1114 869 108 NET Servicos de Comunicao S.A
7303 809 424 103 Telecom Argentina Stet-France
6503 746 223 258 AVANTEL, S.A.
14420 580 38 76 CORPORACION NACIONAL DE TELEC
22047 558 310 15 VTR PUNTO NET S.A.
3816 482 209 95 Empresa Nacional de Telecomun
7738 477 922 30 Telecomunicacoes da Bahia S.A
11172 444 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 1129 445 10 TEDATA
24863 728 147 39 LINKdotNET AS number
36992 660 279 178 Etisalat MISR
3741 266 906 224 The Internet Solution
6713 203 199 12 Itissalat Al-MAGHRIB
29571 202 19 11 Ci Telecom Autonomous system
2018 197 277 64 Tertiary Education Network
33776 197 12 14 Starcomms Nigeria Limited
24835 165 78 9 RAYA Telecom - Egypt
16637 154 440 92 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 3780 3667 278 bellsouth.net, inc.
4323 2708 1107 388 Time Warner Telecom
4766 1859 9436 501 Korea Telecom (KIX)
19262 1818 4676 286 Verizon Global Networks
1785 1797 698 132 PaeTec Communications, Inc.
20115 1494 1531 652 Charter Communications
7018 1461 5747 947 AT&T WorldNet Services
7545 1395 297 83 TPG Internet Pty Ltd
6478 1352 275 123 AT&T Worldnet Services
4755 1348 368 160 TATA Communications formerly
Complete listing at http://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 2708 2320 Time Warner Telecom
1785 1797 1665 PaeTec Communications, Inc.
19262 1818 1532 Verizon Global Networks
4766 1859 1358 Korea Telecom (KIX)
7545 1395 1312 TPG Internet Pty Ltd
6478 1352 1229 AT&T Worldnet Services
17488 1347 1223 Hathway IP Over Cable Interne
4755 1348 1188 TATA Communications formerly
10620 1319 1171 TVCABLE BOGOTA
17974 1240 1170 PT TELEKOMUNIKASI INDONESIA
Complete listing at http://thyme.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
11946 UNALLOCATED 8.12.155.0/24 40913 Quality Technology S
15040 UNALLOCATED 8.12.156.0/24 3356 Level 3 Communicatio
33084 UNALLOCATED 8.15.195.0/24 3356 Level 3 Communicatio
18826 UNALLOCATED 8.17.208.0/20 2828 XO Communications
16734 UNALLOCATED 8.18.204.0/24 26914 Global Netoptex, Inc
53562 UNALLOCATED 8.19.94.0/24 3356 Level 3 Communicatio
22015 UNALLOCATED 8.22.137.0/24 14989 Broadview Networks
46856 UNALLOCATED 8.22.184.0/22 3356 Level 3 Communicatio
21893 UNALLOCATED 8.26.33.0/24 3356 Level 3 Communicatio
26169 UNALLOCATED 8.225.177.0/24 20225 TelJet
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<<
41.223.196.0/24 36990 Alkan Telecom Ltd
41.223.197.0/24 36990 Alkan Telecom Ltd
41.223.198.0/24 36990 Alkan Telecom Ltd
41.223.199.0/24 36990 Alkan Telecom Ltd
46.20.80.0/20 5602 KPNQwest Italia S.p.a
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 /8:20 /9:10 /10:25 /11:67 /12:202
/13:420 /14:730 /15:1318 /16:11289 /17:5447 /18:9267
/19:18479 /20:23532 /21:23780 /22:31095 /23:30369 /24:172749
/25:1048 /26:1163 /27:646 /28:170 /29:47 /30:3
/31:0 /32:7
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2407 3780 bellsouth.net, inc.
4766 1476 1859 Korea Telecom (KIX)
4323 1367 2708 Time Warner Telecom
1785 1259 1797 PaeTec Communications, Inc.
10620 1207 1319 TVCABLE BOGOTA
11492 1099 1207 Cable One
17488 1087 1347 Hathway IP Over Cable Interne
18566 1068 1087 Covad Communications
8452 1029 1129 TEDATA
24560 937 1036 Bharti Airtel Ltd., Telemedia
Complete listing at http://thyme.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:72 2:13 4:13 8:310 12:2012 13:8
14:9 15:20 16:3 17:9 20:8 24:1365
27:345 31:1 32:61 33:12 38:702 40:97
41:2519 44:3 46:97 47:10 49:4 52:12
55:5 56:2 57:30 58:867 59:505 60:477
61:1080 62:1049 63:1964 64:3715 65:2305 66:4025
67:1841 68:1136 69:2800 70:739 71:374 72:1959
73:2 74:2312 75:285 76:318 77:873 78:645
79:418 80:1021 81:798 82:498 83:454 84:680
85:1035 86:431 87:688 88:314 89:1574 90:98
91:3061 92:429 93:995 94:1167 95:703 96:397
97:219 98:634 99:32 101:3 108:64 109:711
110:430 111:579 112:297 113:284 114:452 115:594
116:1102 117:659 118:526 119:881 120:158 121:709
122:1541 123:923 124:1222 125:1241 128:226 129:157
130:168 131:558 132:259 133:19 134:207 135:46
136:223 137:138 138:274 139:109 140:478 141:197
142:346 143:351 144:479 145:54 146:428 147:171
148:629 149:305 150:152 151:233 152:288 153:171
154:3 155:366 156:170 157:335 158:111 159:362
160:315 161:189 162:268 163:165 164:414 165:368
166:468 167:409 168:677 169:156 170:724 171:62
172:2 173:1052 174:531 175:171 176:1 177:1
178:498 180:654 181:1 182:210 183:254 184:160
186:647 187:469 188:819 189:786 190:4156 192:5779
193:4739 194:3430 195:2822 196:1200 198:3552 199:3594
200:5397 201:1583 202:8111 203:8288 204:3995 205:2394
206:2554 207:3054 208:3885 209:3492 210:2582 211:1301
212:1773 213:1684 214:674 215:66 216:4753 217:1579
218:473 219:399 220:1176 221:389 222:314 223:42
End of report
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