Weekly Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri Oct 2 18:45:18 UTC 2009
This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
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 03 Oct, 2009
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 299282
Prefixes after maximum aggregation: 140261
Deaggregation factor: 2.13
Unique aggregates announced to Internet: 148558
Total ASes present in the Internet Routing Table: 32294
Prefixes per ASN: 9.27
Origin-only ASes present in the Internet Routing Table: 28065
Origin ASes announcing only one prefix: 13702
Transit ASes present in the Internet Routing Table: 4229
Transit-only ASes present in the Internet Routing Table: 102
Average AS path length visible in the Internet Routing Table: 3.6
Max AS path length visible: 31
Max AS path prepend of ASN (45127) 27
Prefixes from unregistered ASNs in the Routing Table: 529
Unregistered ASNs in the Routing Table: 123
Number of 32-bit ASNs allocated by the RIRs: 289
Prefixes from 32-bit ASNs in the Routing Table: 205
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 199
Number of addresses announced to Internet: 2109742304
Equivalent to 125 /8s, 192 /16s and 28 /24s
Percentage of available address space announced: 56.9
Percentage of allocated address space announced: 64.5
Percentage of available address space allocated: 88.2
Percentage of address space in use by end-sites: 79.1
Total number of prefixes smaller than registry allocations: 144036
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 71662
Total APNIC prefixes after maximum aggregation: 25237
APNIC Deaggregation factor: 2.84
Prefixes being announced from the APNIC address blocks: 68081
Unique aggregates announced from the APNIC address blocks: 30363
APNIC Region origin ASes present in the Internet Routing Table: 3810
APNIC Prefixes per ASN: 17.87
APNIC Region origin ASes announcing only one prefix: 1047
APNIC Region transit ASes present in the Internet Routing Table: 590
Average APNIC Region AS path length visible: 3.5
Max APNIC Region AS path length visible: 31
Number of APNIC addresses announced to Internet: 461477152
Equivalent to 27 /8s, 129 /16s and 149 /24s
Percentage of available APNIC address space announced: 78.6
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 43/8, 58/8, 59/8, 60/8, 61/8, 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, 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,
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 126890
Total ARIN prefixes after maximum aggregation: 66668
ARIN Deaggregation factor: 1.90
Prefixes being announced from the ARIN address blocks: 101368
Unique aggregates announced from the ARIN address blocks: 38486
ARIN Region origin ASes present in the Internet Routing Table: 13250
ARIN Prefixes per ASN: 7.65
ARIN Region origin ASes announcing only one prefix: 5126
ARIN Region transit ASes present in the Internet Routing Table: 1295
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 24
Number of ARIN addresses announced to Internet: 706349696
Equivalent to 42 /8s, 26 /16s and 10 /24s
Percentage of available ARIN address space announced: 61.9
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, 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, 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: 68650
Total RIPE prefixes after maximum aggregation: 40215
RIPE Deaggregation factor: 1.71
Prefixes being announced from the RIPE address blocks: 62331
Unique aggregates announced from the RIPE address blocks: 41788
RIPE Region origin ASes present in the Internet Routing Table: 13533
RIPE Prefixes per ASN: 4.61
RIPE Region origin ASes announcing only one prefix: 7052
RIPE Region transit ASes present in the Internet Routing Table: 2037
Average RIPE Region AS path length visible: 3.9
Max RIPE Region AS path length visible: 21
Number of RIPE addresses announced to Internet: 399867584
Equivalent to 23 /8s, 213 /16s and 126 /24s
Percentage of available RIPE address space announced: 74.5
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, 196608-197631
RIPE Address Blocks 2/8, 25/8, 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, 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: 25750
Total LACNIC prefixes after maximum aggregation: 6325
LACNIC Deaggregation factor: 4.07
Prefixes being announced from the LACNIC address blocks: 24046
Unique aggregates announced from the LACNIC address blocks: 13497
LACNIC Region origin ASes present in the Internet Routing Table: 1187
LACNIC Prefixes per ASN: 20.26
LACNIC Region origin ASes announcing only one prefix: 382
LACNIC Region transit ASes present in the Internet Routing Table: 193
Average LACNIC Region AS path length visible: 4.2
Max LACNIC Region AS path length visible: 30
Number of LACNIC addresses announced to Internet: 66579712
Equivalent to 3 /8s, 247 /16s and 237 /24s
Percentage of available LACNIC address space announced: 66.1
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
262144-263167 plus ERX transfers
LACNIC Address Blocks 186/8, 187/8, 189/8, 190/8, 200/8, 201/8,
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 5885
Total AfriNIC prefixes after maximum aggregation: 1548
AfriNIC Deaggregation factor: 3.80
Prefixes being announced from the AfriNIC address blocks: 4279
Unique aggregates announced from the AfriNIC address blocks: 1536
AfriNIC Region origin ASes present in the Internet Routing Table: 322
AfriNIC Prefixes per ASN: 13.29
AfriNIC Region origin ASes announcing only one prefix: 95
AfriNIC Region transit ASes present in the Internet Routing Table: 65
Average AfriNIC Region AS path length visible: 3.7
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 12557312
Equivalent to 0 /8s, 191 /16s and 156 /24s
Percentage of available AfriNIC address space announced: 37.4
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 1766 6995 456 Korea Telecom (KIX)
17488 1475 135 142 Hathway IP Over Cable Interne
4755 1256 292 144 TATA Communications formerly
9583 1102 87 531 Sify Limited
4134 1010 18168 391 CHINANET-BACKBONE
18101 979 204 33 Reliance Infocom Ltd Internet
7545 885 198 100 TPG Internet Pty Ltd
9829 805 625 20 BSNL National Internet Backbo
24560 774 285 164 Bharti Airtel Ltd., Telemedia
4808 762 1518 181 CNCGROUP IP network: China169
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 4163 3626 313 bellsouth.net, inc.
4323 3692 1037 384 Time Warner Telecom
1785 1758 714 138 PaeTec Communications, Inc.
7018 1522 5859 1054 AT&T WorldNet Services
20115 1475 1475 669 Charter Communications
6478 1413 279 301 AT&T Worldnet Services
2386 1320 656 950 AT&T Data Communications Serv
3356 1227 10963 435 Level 3 Communications, LLC
11492 1130 208 12 Cable One
22773 1111 2604 70 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
30890 494 93 203 Evolva Telecom
3292 446 1900 393 TDC Tele Danmark
35805 442 40 5 United Telecom of Georgia
12479 426 578 6 Uni2 Autonomous System
702 423 1822 341 UUNET - Commercial IP service
9198 381 138 12 Kazakhtelecom Data Network Ad
8866 356 110 21 Bulgarian Telecommunication C
3301 352 1428 309 TeliaNet Sweden
3320 352 7067 303 Deutsche Telekom AG
3215 348 3128 110 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 1480 2899 245 UniNet S.A. de C.V.
10620 1007 227 98 TVCABLE BOGOTA
28573 758 639 86 NET Servicos de Comunicao S.A
7303 650 343 99 Telecom Argentina Stet-France
22047 545 302 14 VTR PUNTO NET S.A.
11830 475 310 61 Instituto Costarricense de El
11172 440 99 70 Servicios Alestra S.A de C.V
14117 436 29 11 Telefonica del Sur S.A.
7738 427 858 29 Telecomunicacoes da Bahia S.A
6471 421 96 31 ENTEL CHILE S.A.
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 981 188 7 TEDATA
24863 935 96 65 LINKdotNET AS number
3741 272 856 234 The Internet Solution
2018 192 187 118 Tertiary Education Network
6713 176 167 12 Itissalat Al-MAGHRIB
29571 139 14 6 Ci Telecom Autonomous system
33776 125 7 11 Starcomms Nigeria Limited
24835 123 46 9 RAYA Telecom - Egypt
5536 122 8 13 Internet Egypt Network
5713 116 508 67 Telkom SA Ltd
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 4163 3626 313 bellsouth.net, inc.
4323 3692 1037 384 Time Warner Telecom
4766 1766 6995 456 Korea Telecom (KIX)
1785 1758 714 138 PaeTec Communications, Inc.
7018 1522 5859 1054 AT&T WorldNet Services
8151 1480 2899 245 UniNet S.A. de C.V.
17488 1475 135 142 Hathway IP Over Cable Interne
20115 1475 1475 669 Charter Communications
6478 1413 279 301 AT&T Worldnet Services
2386 1320 656 950 AT&T Data Communications Serv
Complete listing at http://thyme.apnic.net/current/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 3692 3308 Time Warner Telecom
1785 1758 1620 PaeTec Communications, Inc.
17488 1475 1333 Hathway IP Over Cable Interne
4766 1766 1310 Korea Telecom (KIX)
8151 1480 1235 UniNet S.A. de C.V.
11492 1130 1118 Cable One
6478 1413 1112 AT&T Worldnet Services
4755 1256 1112 TATA Communications formerly
18566 1062 1052 Covad Communications
22773 1111 1041 Cox Communications, Inc.
Complete listing at http://thyme.apnic.net/current/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
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
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
26973 UNALLOCATED 12.39.154.0/23 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.159.0/24 7018 AT&T WorldNet Servic
32326 UNALLOCATED 12.40.49.0/24 7018 AT&T WorldNet Servic
25639 UNALLOCATED 12.41.169.0/24 7018 AT&T WorldNet Servic
Complete listing at http://thyme.apnic.net/current/data-badAS
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
2.0.0.0/16 12654 RIPE NCC RIS Project
2.1.0.0/21 12654 RIPE NCC RIS Project
2.1.24.0/24 12654 RIPE NCC RIS Project
41.223.92.0/22 36936 >>UNKNOWN<<
41.223.189.0/24 26452 Local Communications Networks
43.245.0.0/16 7502 Internetwork Kyoto
46.0.0.0/16 12654 RIPE NCC RIS Project
46.1.0.0/21 12654 RIPE NCC RIS Project
46.1.24.0/24 12654 RIPE NCC RIS Project
62.61.220.0/24 24974 Tachyon Europe BV - Wireless
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 /10:24 /11:63 /12:176
/13:354 /14:628 /15:1199 /16:10668 /17:4847 /18:8372
/19:17493 /20:20889 /21:20988 /22:27160 /23:26806 /24:156790
/25:924 /26:1078 /27:558 /28:172 /29:40 /30:15
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2696 4163 bellsouth.net, inc.
4323 2351 3692 Time Warner Telecom
4766 1439 1766 Korea Telecom (KIX)
17488 1237 1475 Hathway IP Over Cable Interne
1785 1224 1758 PaeTec Communications, Inc.
11492 1056 1130 Cable One
18566 1043 1062 Covad Communications
9583 954 1102 Sify Limited
10620 913 1007 TVCABLE BOGOTA
8452 909 981 TEDATA
Complete listing at http://thyme.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
2:1 4:14 8:227 12:2148 13:7 15:22
16:3 17:5 20:36 24:1168 32:52 34:2
38:601 40:97 41:1707 43:1 44:2 46:1
47:16 52:6 55:2 56:2 57:25 58:613
59:642 60:450 61:1077 62:1015 63:2008 64:3708
65:2400 66:4109 67:1791 68:964 69:2765 70:576
71:154 72:1658 73:2 74:1954 75:181 76:349
77:873 78:581 79:394 80:898 81:808 82:505
83:429 84:522 85:1003 86:382 87:666 88:387
89:1495 90:62 91:2578 92:408 93:1235 94:1184
95:1106 96:170 97:270 98:310 99:30 109:44
110:212 111:445 112:139 113:146 114:262 115:354
116:1111 117:549 118:328 119:773 120:136 121:780
122:1287 123:787 124:1047 125:1350 128:221 129:216
130:129 131:425 132:75 133:10 134:181 135:42
136:241 137:166 138:177 139:85 140:442 141:121
142:381 143:333 144:349 145:48 146:387 147:168
148:549 149:209 150:149 151:181 152:215 153:156
154:2 155:271 156:167 157:307 158:101 159:354
160:291 161:168 162:270 163:172 164:279 165:520
166:475 167:377 168:792 169:168 170:474 171:43
172:2 173:420 174:359 175:1 178:1 180:39
182:1 186:138 187:156 188:1055 189:601 190:3114
192:5776 193:4260 194:3285 195:2746 196:1142 198:3555
199:3354 200:5209 201:1343 202:7851 203:8247 204:3936
205:2199 206:2428 207:2970 208:3983 209:3487 210:2564
211:1130 212:1615 213:1623 214:157 215:39 216:4423
217:1332 218:413 219:449 220:1132 221:443 222:318
End of report
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