Weekly Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri Apr 30 18:11:06 UTC 2010
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 01 May, 2010
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 320010
Prefixes after maximum aggregation: 147697
Deaggregation factor: 2.17
Unique aggregates announced to Internet: 155292
Total ASes present in the Internet Routing Table: 33885
Prefixes per ASN: 9.44
Origin-only ASes present in the Internet Routing Table: 29405
Origin ASes announcing only one prefix: 14332
Transit ASes present in the Internet Routing Table: 4480
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: 24
Max AS path prepend of ASN (36992) 22
Prefixes from unregistered ASNs in the Routing Table: 352
Unregistered ASNs in the Routing Table: 126
Number of 32-bit ASNs allocated by the RIRs: 543
Prefixes from 32-bit ASNs in the Routing Table: 598
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 189
Number of addresses announced to Internet: 2235997952
Equivalent to 133 /8s, 70 /16s and 159 /24s
Percentage of available address space announced: 60.3
Percentage of allocated address space announced: 66.3
Percentage of available address space allocated: 90.9
Percentage of address space in use by end-sites: 82.4
Total number of prefixes smaller than registry allocations: 153558
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 76646
Total APNIC prefixes after maximum aggregation: 26650
APNIC Deaggregation factor: 2.88
Prefixes being announced from the APNIC address blocks: 73318
Unique aggregates announced from the APNIC address blocks: 32160
APNIC Region origin ASes present in the Internet Routing Table: 4017
APNIC Prefixes per ASN: 18.25
APNIC Region origin ASes announcing only one prefix: 1102
APNIC Region transit ASes present in the Internet Routing Table: 627
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 511561792
Equivalent to 30 /8s, 125 /16s and 208 /24s
Percentage of available APNIC address space announced: 76.2
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, 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, 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: 133880
Total ARIN prefixes after maximum aggregation: 68916
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 106725
Unique aggregates announced from the ARIN address blocks: 40693
ARIN Region origin ASes present in the Internet Routing Table: 13659
ARIN Prefixes per ASN: 7.81
ARIN Region origin ASes announcing only one prefix: 5267
ARIN Region transit ASes present in the Internet Routing Table: 1351
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 22
Number of ARIN addresses announced to Internet: 726007328
Equivalent to 43 /8s, 69 /16s and 254 /24s
Percentage of available ARIN address space announced: 61.8
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: 73451
Total RIPE prefixes after maximum aggregation: 42731
RIPE Deaggregation factor: 1.72
Prefixes being announced from the RIPE address blocks: 66426
Unique aggregates announced from the RIPE address blocks: 43668
RIPE Region origin ASes present in the Internet Routing Table: 14406
RIPE Prefixes per ASN: 4.61
RIPE Region origin ASes announcing only one prefix: 7449
RIPE Region transit ASes present in the Internet Routing Table: 2156
Average RIPE Region AS path length visible: 3.9
Max RIPE Region AS path length visible: 21
Number of RIPE addresses announced to Internet: 423767200
Equivalent to 25 /8s, 66 /16s and 44 /24s
Percentage of available RIPE address space announced: 78.9
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: 28441
Total LACNIC prefixes after maximum aggregation: 6761
LACNIC Deaggregation factor: 4.21
Prefixes being announced from the LACNIC address blocks: 26851
Unique aggregates announced from the LACNIC address blocks: 13904
LACNIC Region origin ASes present in the Internet Routing Table: 1272
LACNIC Prefixes per ASN: 21.11
LACNIC Region origin ASes announcing only one prefix: 409
LACNIC Region transit ASes present in the Internet Routing Table: 223
Average LACNIC Region AS path length visible: 4.0
Max LACNIC Region AS path length visible: 20
Number of LACNIC addresses announced to Internet: 72741888
Equivalent to 4 /8s, 85 /16s and 244 /24s
Percentage of available LACNIC address space announced: 72.3
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: 6759
Total AfriNIC prefixes after maximum aggregation: 1790
AfriNIC Deaggregation factor: 3.78
Prefixes being announced from the AfriNIC address blocks: 5168
Unique aggregates announced from the AfriNIC address blocks: 1463
AfriNIC Region origin ASes present in the Internet Routing Table: 353
AfriNIC Prefixes per ASN: 14.64
AfriNIC Region origin ASes announcing only one prefix: 105
AfriNIC Region transit ASes present in the Internet Routing Table: 78
Average AfriNIC Region AS path length visible: 3.9
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC addresses announced to Internet: 14544384
Equivalent to 0 /8s, 221 /16s and 238 /24s
Percentage of available AfriNIC address space announced: 43.3
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 1847 8406 480 Korea Telecom (KIX)
17488 1313 138 122 Hathway IP Over Cable Interne
4755 1292 291 148 TATA Communications formerly
7545 1167 231 102 TPG Internet Pty Ltd
17974 1015 281 18 PT TELEKOMUNIKASI INDONESIA
9583 993 73 489 Sify Limited
4134 941 20454 398 CHINANET-BACKBONE
24560 888 304 170 Bharti Airtel Ltd., Telemedia
4808 843 1589 215 CNCGROUP IP network: China169
9829 808 680 36 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 3977 3837 293 bellsouth.net, inc.
4323 3831 1116 404 Time Warner Telecom
1785 1785 699 131 PaeTec Communications, Inc.
7018 1555 5758 987 AT&T WorldNet Services
20115 1514 1501 660 Charter Communications
2386 1311 585 928 AT&T Data Communications Serv
3356 1213 10920 422 Level 3 Communications, LLC
6478 1212 249 146 AT&T Worldnet Services
22773 1148 2605 71 Cox Communications, Inc.
11492 1124 222 14 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
35805 617 56 6 United Telecom of Georgia
3292 448 1899 389 TDC Tele Danmark
30890 436 99 203 Evolva Telecom
702 414 1869 330 UUNET - Commercial IP service
8551 401 356 37 Bezeq International
8866 395 117 18 Bulgarian Telecommunication C
3301 367 1414 322 TeliaNet Sweden
3320 365 7072 318 Deutsche Telekom AG
3215 346 3218 102 France Telecom Transpac
12479 332 576 5 Uni2 Autonomous System
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 1546 2965 242 UniNet S.A. de C.V.
10620 1014 229 155 TVCABLE BOGOTA
28573 931 739 92 NET Servicos de Comunicao S.A
7303 720 372 104 Telecom Argentina Stet-France
6503 548 171 212 AVANTEL, S.A.
22047 546 310 15 VTR PUNTO NET S.A.
18881 537 268 11 Global Village Telecom
7738 477 922 30 Telecomunicacoes da Bahia S.A
3816 461 195 70 Empresa Nacional de Telecomun
14117 454 30 13 Telefonica del Sur 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 1007 189 9 TEDATA
24863 721 145 41 LINKdotNET AS number
36992 629 273 172 Etisalat MISR
3741 273 852 232 The Internet Solution
2018 214 230 111 Tertiary Education Network
33776 205 11 15 Starcomms Nigeria Limited
6713 176 167 12 Itissalat Al-MAGHRIB
29571 172 19 9 Ci Telecom Autonomous system
29975 133 506 14 Vodacom
5536 114 8 3 Internet Egypt Network
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 3977 3837 293 bellsouth.net, inc.
4323 3831 1116 404 Time Warner Telecom
4766 1847 8406 480 Korea Telecom (KIX)
1785 1785 699 131 PaeTec Communications, Inc.
7018 1555 5758 987 AT&T WorldNet Services
8151 1546 2965 242 UniNet S.A. de C.V.
20115 1514 1501 660 Charter Communications
17488 1313 138 122 Hathway IP Over Cable Interne
2386 1311 585 928 AT&T Data Communications Serv
4755 1292 291 148 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 3831 3427 Time Warner Telecom
1785 1785 1654 PaeTec Communications, Inc.
4766 1847 1367 Korea Telecom (KIX)
8151 1546 1304 UniNet S.A. de C.V.
17488 1313 1191 Hathway IP Over Cable Interne
4755 1292 1144 TATA Communications formerly
11492 1124 1110 Cable One
22773 1148 1077 Cox Communications, Inc.
6478 1212 1066 AT&T Worldnet Services
7545 1167 1065 TPG Internet Pty Ltd
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 12.39.155.0/24 7018 AT&T WorldNet Servic
26973 UNALLOCATED 12.39.159.0/24 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
2.80.0.0/14 3243 Telepac - Comunicacoes Intera
14.0.0.0/8 237 Merit Network
41.190.66.0/24 37039 Alink Telecom Benin
41.202.96.0/19 29571 Ci Telecom Autonomous system
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 26452 Local Communications Networks
41.223.196.0/24 36990 Alkan Telecom Ltd
41.223.197.0/24 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 /11:66 /12:192
/13:397 /14:689 /15:1261 /16:11067 /17:5261 /18:8949
/19:18260 /20:22474 /21:22623 /22:29366 /23:28946 /24:167404
/25:971 /26:1234 /27:629 /28:142 /29:8 /30:7
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2550 3977 bellsouth.net, inc.
4323 2335 3831 Time Warner Telecom
4766 1481 1847 Korea Telecom (KIX)
1785 1246 1785 PaeTec Communications, Inc.
17488 1063 1313 Hathway IP Over Cable Interne
18566 1040 1059 Covad Communications
11492 1033 1124 Cable One
7018 935 1555 AT&T WorldNet Services
10620 930 1014 TVCABLE BOGOTA
8452 907 1007 TEDATA
Complete listing at http://thyme.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:13 8:261 12:2001 13:10 15:23 16:3
17:8 20:25 24:1411 27:54 32:48 33:12
38:661 40:97 41:2115 44:3 46:1 47:25
52:6 55:6 56:2 57:24 58:715 59:527
60:431 61:1101 62:1034 63:1992 64:3855 65:2369
66:4162 67:1817 68:1059 69:2807 70:709 71:238
72:1832 73:2 74:2269 75:247 76:307 77:844
78:621 79:411 80:980 81:786 82:460 83:444
84:703 85:1044 86:452 87:697 88:325 89:1553
90:87 91:2732 92:474 93:1110 94:1400 95:587
96:245 97:307 98:549 99:26 109:461 110:330
111:508 112:257 113:281 114:392 115:598 116:1028
117:636 118:428 119:922 120:150 121:788 122:1438
123:881 124:1107 125:1298 128:211 129:207 130:196
131:563 132:246 133:17 134:196 135:44 136:227
137:172 138:253 139:92 140:487 141:136 142:361
143:380 144:468 145:52 146:428 147:168 148:586
149:321 150:151 151:169 152:263 153:168 154:2
155:325 156:184 157:324 158:107 159:368 160:313
161:204 162:269 163:165 164:409 165:531 166:504
167:399 168:802 169:160 170:700 171:50 172:1
173:673 174:657 175:76 178:69 180:444 182:43
183:251 184:36 186:363 187:308 188:1280 189:756
190:3657 192:5737 193:4675 194:3353 195:2758 196:1138
197:1 198:3573 199:3423 200:5331 201:1510 202:7984
203:8280 204:4055 205:2350 206:2545 207:3031 208:3929
209:3475 210:2511 211:1239 212:1725 213:1654 214:657
215:65 216:4556 217:1540 218:503 219:384 220:1100
221:396 222:312
End of report
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