Weekly Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri Sep 25 18:28:47 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 26 Sep, 2009
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 298894
Prefixes after maximum aggregation: 140069
Deaggregation factor: 2.13
Unique aggregates announced to Internet: 148203
Total ASes present in the Internet Routing Table: 32275
Prefixes per ASN: 9.26
Origin-only ASes present in the Internet Routing Table: 28043
Origin ASes announcing only one prefix: 13693
Transit ASes present in the Internet Routing Table: 4232
Transit-only ASes present in the Internet Routing Table: 103
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: 456
Unregistered ASNs in the Routing Table: 122
Number of 32-bit ASNs allocated by the RIRs: 283
Prefixes from 32-bit ASNs in the Routing Table: 145
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 204
Number of addresses announced to Internet: 2108932864
Equivalent to 125 /8s, 179 /16s and 195 /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: 79.0
Total number of prefixes smaller than registry allocations: 143732
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 71419
Total APNIC prefixes after maximum aggregation: 25067
APNIC Deaggregation factor: 2.85
Prefixes being announced from the APNIC address blocks: 67834
Unique aggregates announced from the APNIC address blocks: 30294
APNIC Region origin ASes present in the Internet Routing Table: 3806
APNIC Prefixes per ASN: 17.82
APNIC Region origin ASes announcing only one prefix: 1047
APNIC Region transit ASes present in the Internet Routing Table: 585
Average APNIC Region AS path length visible: 3.5
Max APNIC Region AS path length visible: 31
Number of APNIC addresses announced to Internet: 460581408
Equivalent to 27 /8s, 115 /16s and 234 /24s
Percentage of available APNIC address space announced: 78.4
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: 126988
Total ARIN prefixes after maximum aggregation: 66741
ARIN Deaggregation factor: 1.90
Prefixes being announced from the ARIN address blocks: 101421
Unique aggregates announced from the ARIN address blocks: 38445
ARIN Region origin ASes present in the Internet Routing Table: 13258
ARIN Prefixes per ASN: 7.65
ARIN Region origin ASes announcing only one prefix: 5136
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: 706192256
Equivalent to 42 /8s, 23 /16s and 163 /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: 40175
RIPE Deaggregation factor: 1.71
Prefixes being announced from the RIPE address blocks: 62346
Unique aggregates announced from the RIPE address blocks: 41701
RIPE Region origin ASes present in the Internet Routing Table: 13513
RIPE Prefixes per ASN: 4.61
RIPE Region origin ASes announcing only one prefix: 7037
RIPE Region transit ASes present in the Internet Routing Table: 2041
Average RIPE Region AS path length visible: 3.9
Max RIPE Region AS path length visible: 21
Number of RIPE addresses announced to Internet: 399869888
Equivalent to 23 /8s, 213 /16s and 135 /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: 25598
Total LACNIC prefixes after maximum aggregation: 6262
LACNIC Deaggregation factor: 4.09
Prefixes being announced from the LACNIC address blocks: 23876
Unique aggregates announced from the LACNIC address blocks: 13335
LACNIC Region origin ASes present in the Internet Routing Table: 1184
LACNIC Prefixes per ASN: 20.17
LACNIC Region origin ASes announcing only one prefix: 380
LACNIC Region transit ASes present in the Internet Routing Table: 193
Average LACNIC Region AS path length visible: 4.1
Max LACNIC Region AS path length visible: 21
Number of LACNIC addresses announced to Internet: 66545152
Equivalent to 3 /8s, 247 /16s and 102 /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: 5853
Total AfriNIC prefixes after maximum aggregation: 1554
AfriNIC Deaggregation factor: 3.77
Prefixes being announced from the AfriNIC address blocks: 4236
Unique aggregates announced from the AfriNIC address blocks: 1535
AfriNIC Region origin ASes present in the Internet Routing Table: 319
AfriNIC Prefixes per ASN: 13.28
AfriNIC Region origin ASes announcing only one prefix: 93
AfriNIC Region transit ASes present in the Internet Routing Table: 66
Average AfriNIC Region AS path length visible: 3.8
Max AfriNIC Region AS path length visible: 14
Number of AfriNIC addresses announced to Internet: 12467968
Equivalent to 0 /8s, 190 /16s and 63 /24s
Percentage of available AfriNIC address space announced: 37.2
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 1762 6995 453 Korea Telecom (KIX)
17488 1505 137 104 Hathway IP Over Cable Interne
4755 1260 292 144 TATA Communications formerly
9583 1101 87 530 Sify Limited
4134 1009 18168 391 CHINANET-BACKBONE
18101 975 204 33 Reliance Infocom Ltd Internet
7545 869 198 97 TPG Internet Pty Ltd
9829 813 626 19 BSNL National Internet Backbo
4808 788 1518 181 CNCGROUP IP network: China169
24560 774 285 164 Bharti Airtel Ltd., Telemedia
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 4168 3627 312 bellsouth.net, inc.
4323 3700 1045 384 Time Warner Telecom
1785 1751 714 138 PaeTec Communications, Inc.
7018 1507 5875 1056 AT&T WorldNet Services
20115 1479 1477 668 Charter Communications
6478 1411 279 301 AT&T Worldnet Services
2386 1321 657 951 AT&T Data Communications Serv
3356 1234 10964 441 Level 3 Communications, LLC
11492 1128 208 12 Cable One
22773 1111 2604 67 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 493 93 202 Evolva Telecom
3292 446 1900 393 TDC Tele Danmark
702 425 1822 343 UUNET - Commercial IP service
12479 425 578 6 Uni2 Autonomous System
35805 415 40 5 United Telecom of Georgia
9198 376 138 12 Kazakhtelecom Data Network Ad
8866 358 110 23 Bulgarian Telecommunication C
3320 353 7068 304 Deutsche Telekom AG
3301 351 1412 308 TeliaNet Sweden
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 1478 2899 246 UniNet S.A. de C.V.
10620 1015 227 95 TVCABLE BOGOTA
28573 709 622 62 NET Servicos de Comunicao S.A
7303 640 338 94 Telecom Argentina Stet-France
22047 544 302 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 435 29 11 Telefonica del Sur S.A.
7738 424 858 29 Telecomunicacoes da Bahia S.A
6471 423 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 954 188 7 TEDATA
24863 939 97 62 LINKdotNET AS number
3741 272 856 234 The Internet Solution
2018 197 187 116 Tertiary Education Network
6713 175 166 16 Itissalat Al-MAGHRIB
29571 139 14 6 Ci Telecom Autonomous system
24835 123 46 9 RAYA Telecom - Egypt
5536 122 8 13 Internet Egypt Network
5713 118 520 69 Telkom SA Ltd
20858 106 34 6 EgyNet
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 4168 3627 312 bellsouth.net, inc.
4323 3700 1045 384 Time Warner Telecom
4766 1762 6995 453 Korea Telecom (KIX)
1785 1751 714 138 PaeTec Communications, Inc.
7018 1507 5875 1056 AT&T WorldNet Services
17488 1505 137 104 Hathway IP Over Cable Interne
20115 1479 1477 668 Charter Communications
8151 1478 2899 246 UniNet S.A. de C.V.
6478 1411 279 301 AT&T Worldnet Services
2386 1321 657 951 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 3700 3316 Time Warner Telecom
1785 1751 1613 PaeTec Communications, Inc.
17488 1505 1401 Hathway IP Over Cable Interne
4766 1762 1309 Korea Telecom (KIX)
8151 1478 1232 UniNet S.A. de C.V.
4755 1260 1116 TATA Communications formerly
11492 1128 1116 Cable One
6478 1411 1110 AT&T Worldnet Services
18566 1062 1052 Covad Communications
22773 1111 1044 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 /8:19 /9:10 /10:24 /11:63 /12:176
/13:354 /14:625 /15:1199 /16:10676 /17:4832 /18:8367
/19:17456 /20:20856 /21:20870 /22:27113 /23:26778 /24:156686
/25:933 /26:1063 /27:562 /28:169 /29:40 /30:15
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2700 4168 bellsouth.net, inc.
4323 2360 3700 Time Warner Telecom
4766 1435 1762 Korea Telecom (KIX)
17488 1259 1505 Hathway IP Over Cable Interne
1785 1217 1751 PaeTec Communications, Inc.
11492 1054 1128 Cable One
18566 1043 1062 Covad Communications
9583 953 1101 Sify Limited
10620 921 1015 TVCABLE BOGOTA
8452 878 954 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 12:2145 13:7 15:22
16:3 17:5 20:36 24:1169 32:52 34:2
38:604 40:97 41:1670 43:1 44:2 46:1
47:16 52:6 55:2 56:2 57:25 58:569
59:648 60:454 61:1075 62:1029 63:2018 64:3740
65:2398 66:4086 67:1776 68:964 69:2768 70:578
71:156 72:1680 73:2 74:1944 75:179 76:319
77:882 78:584 79:395 80:908 81:802 82:505
83:432 84:531 85:1028 86:382 87:683 88:388
89:1485 90:61 91:2563 92:404 93:1246 94:1207
95:1100 96:168 97:267 98:308 99:30 109:42
110:206 111:440 112:138 113:145 114:260 115:350
116:1126 117:571 118:325 119:782 120:132 121:775
122:1289 123:777 124:1048 125:1345 128:222 129:216
130:129 131:424 132:75 133:10 134:173 135:42
136:240 137:164 138:177 139:85 140:441 141:121
142:383 143:336 144:350 145:49 146:390 147:170
148:549 149:213 150:209 151:183 152:215 153:155
154:2 155:270 156:165 157:307 158:113 159:354
160:291 161:164 162:270 163:171 164:280 165:521
166:474 167:375 168:789 169:166 170:473 171:43
172:2 173:417 174:359 175:1 178:1 180:28
182:1 186:143 187:157 188:1011 189:581 190:3063
192:5775 193:4260 194:3290 195:2757 196:1150 198:3557
199:3350 200:5218 201:1320 202:7848 203:8263 204:3932
205:2201 206:2439 207:2988 208:3955 209:3488 210:2555
211:1123 212:1611 213:1621 214:176 215:40 216:4396
217:1311 218:412 219:450 220:1127 221:441 222:317
End of report
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