Weekly Routing Table Report
Routing Analysis Role Account
cscora at apnic.net
Fri May 21 18:09:30 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 22 May, 2010
Report Website: http://thyme.apnic.net
Detailed Analysis: http://thyme.apnic.net/current/
Analysis Summary
----------------
BGP routing table entries examined: 321165
Prefixes after maximum aggregation: 148380
Deaggregation factor: 2.16
Unique aggregates announced to Internet: 156870
Total ASes present in the Internet Routing Table: 34042
Prefixes per ASN: 9.43
Origin-only ASes present in the Internet Routing Table: 29540
Origin ASes announcing only one prefix: 14366
Transit ASes present in the Internet Routing Table: 4502
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: 331
Unregistered ASNs in the Routing Table: 122
Number of 32-bit ASNs allocated by the RIRs: 581
Prefixes from 32-bit ASNs in the Routing Table: 661
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 162
Number of addresses announced to Internet: 2221080896
Equivalent to 132 /8s, 99 /16s and 1 /24s
Percentage of available address space announced: 59.9
Percentage of allocated address space announced: 65.2
Percentage of available address space allocated: 91.9
Percentage of address space in use by end-sites: 82.9
Total number of prefixes smaller than registry allocations: 153934
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 76497
Total APNIC prefixes after maximum aggregation: 26734
APNIC Deaggregation factor: 2.86
Prefixes being announced from the APNIC address blocks: 73497
Unique aggregates announced from the APNIC address blocks: 32320
APNIC Region origin ASes present in the Internet Routing Table: 4040
APNIC Prefixes per ASN: 18.19
APNIC Region origin ASes announcing only one prefix: 1110
APNIC Region transit ASes present in the Internet Routing Table: 622
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 519920448
Equivalent to 30 /8s, 253 /16s and 91 /24s
Percentage of available APNIC address space announced: 77.5
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: 134171
Total ARIN prefixes after maximum aggregation: 69108
ARIN Deaggregation factor: 1.94
Prefixes being announced from the ARIN address blocks: 107058
Unique aggregates announced from the ARIN address blocks: 41502
ARIN Region origin ASes present in the Internet Routing Table: 13697
ARIN Prefixes per ASN: 7.82
ARIN Region origin ASes announcing only one prefix: 5273
ARIN Region transit ASes present in the Internet Routing Table: 1352
Average ARIN Region AS path length visible: 3.4
Max ARIN Region AS path length visible: 22
Number of ARIN addresses announced to Internet: 731107360
Equivalent to 43 /8s, 147 /16s and 208 /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: 74051
Total RIPE prefixes after maximum aggregation: 42968
RIPE Deaggregation factor: 1.72
Prefixes being announced from the RIPE address blocks: 67010
Unique aggregates announced from the RIPE address blocks: 44081
RIPE Region origin ASes present in the Internet Routing Table: 14472
RIPE Prefixes per ASN: 4.63
RIPE Region origin ASes announcing only one prefix: 7471
RIPE Region transit ASes present in the Internet Routing Table: 2175
Average RIPE Region AS path length visible: 3.9
Max RIPE Region AS path length visible: 21
Number of RIPE addresses announced to Internet: 426216928
Equivalent to 25 /8s, 103 /16s and 141 /24s
Percentage of available RIPE address space announced: 74.7
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: 28205
Total LACNIC prefixes after maximum aggregation: 6791
LACNIC Deaggregation factor: 4.15
Prefixes being announced from the LACNIC address blocks: 26657
Unique aggregates announced from the LACNIC address blocks: 13910
LACNIC Region origin ASes present in the Internet Routing Table: 1291
LACNIC Prefixes per ASN: 20.65
LACNIC Region origin ASes announcing only one prefix: 405
LACNIC Region transit ASes present in the Internet Routing Table: 225
Average LACNIC Region AS path length visible: 3.9
Max LACNIC Region AS path length visible: 24
Number of LACNIC addresses announced to Internet: 73134848
Equivalent to 4 /8s, 91 /16s and 243 /24s
Percentage of available LACNIC address space announced: 72.7
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: 7345
Total AfriNIC prefixes after maximum aggregation: 1861
AfriNIC Deaggregation factor: 3.95
Prefixes being announced from the AfriNIC address blocks: 5640
Unique aggregates announced from the AfriNIC address blocks: 1668
AfriNIC Region origin ASes present in the Internet Routing Table: 365
AfriNIC Prefixes per ASN: 15.45
AfriNIC Region origin ASes announcing only one prefix: 107
AfriNIC Region transit ASes present in the Internet Routing Table: 83
Average AfriNIC Region AS path length visible: 3.8
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC addresses announced to Internet: 17856768
Equivalent to 1 /8s, 16 /16s and 121 /24s
Percentage of available AfriNIC address space announced: 53.2
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 1848 8422 483 Korea Telecom (KIX)
17488 1316 140 123 Hathway IP Over Cable Interne
4755 1306 293 151 TATA Communications formerly
7545 1212 232 105 TPG Internet Pty Ltd
17974 1059 281 18 PT TELEKOMUNIKASI INDONESIA
9583 990 73 485 Sify Limited
24560 900 305 169 Bharti Airtel Ltd., Telemedia
4134 872 21191 403 CHINANET-BACKBONE
4808 845 1587 214 CNCGROUP IP network: China169
9829 791 681 34 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 3932 3733 288 bellsouth.net, inc.
4323 3843 1116 404 Time Warner Telecom
1785 1783 699 130 PaeTec Communications, Inc.
7018 1540 5754 980 AT&T WorldNet Services
20115 1538 1506 654 Charter Communications
2386 1281 568 911 AT&T Data Communications Serv
6478 1248 257 99 AT&T Worldnet Services
3356 1191 10887 407 Level 3 Communications, LLC
22773 1155 2604 64 Cox Communications, Inc.
11492 1146 210 285 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 627 56 6 United Telecom of Georgia
3292 454 2027 393 TDC Tele Danmark
30890 442 116 207 Evolva Telecom
702 414 1869 328 UUNET - Commercial IP service
8551 402 355 38 Bezeq International
8866 396 117 18 Bulgarian Telecommunication C
3320 367 7072 318 Deutsche Telekom AG
3301 365 1413 321 TeliaNet Sweden
12479 337 576 5 Uni2 Autonomous System
3215 329 3218 101 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 1553 2965 245 UniNet S.A. de C.V.
10620 1042 234 152 TVCABLE BOGOTA
28573 877 720 76 NET Servicos de Comunicao S.A
7303 729 377 107 Telecom Argentina Stet-France
6503 580 173 209 AVANTEL, S.A.
22047 545 310 15 VTR PUNTO NET S.A.
7738 477 922 30 Telecomunicacoes da Bahia S.A
3816 470 202 73 Empresa Nacional de Telecomun
14117 455 30 13 Telefonica del Sur S.A.
11172 444 99 72 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 1262 445 10 TEDATA
24863 712 147 39 LINKdotNET AS number
36992 643 278 184 Etisalat MISR
3741 270 852 231 The Internet Solution
2018 216 231 112 Tertiary Education Network
33776 213 11 14 Starcomms Nigeria Limited
6713 176 167 12 Itissalat Al-MAGHRIB
24835 175 78 10 RAYA Telecom - Egypt
29571 172 19 9 Ci Telecom Autonomous system
29975 132 490 17 Vodacom
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 3932 3733 288 bellsouth.net, inc.
4323 3843 1116 404 Time Warner Telecom
4766 1848 8422 483 Korea Telecom (KIX)
1785 1783 699 130 PaeTec Communications, Inc.
8151 1553 2965 245 UniNet S.A. de C.V.
7018 1540 5754 980 AT&T WorldNet Services
20115 1538 1506 654 Charter Communications
17488 1316 140 123 Hathway IP Over Cable Interne
4755 1306 293 151 TATA Communications formerly
2386 1281 568 911 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 3843 3439 Time Warner Telecom
1785 1783 1653 PaeTec Communications, Inc.
4766 1848 1365 Korea Telecom (KIX)
8151 1553 1308 UniNet S.A. de C.V.
8452 1262 1252 TEDATA
17488 1316 1193 Hathway IP Over Cable Interne
4755 1306 1155 TATA Communications formerly
6478 1248 1149 AT&T Worldnet Services
7545 1212 1107 TPG Internet Pty Ltd
22773 1155 1091 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 12.39.155.0/24 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
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
41.202.96.0/19 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
41.223.196.0/24 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 /8:19 /9:10 /10:26 /11:67 /12:194
/13:401 /14:689 /15:1269 /16:11071 /17:5272 /18:8978
/19:18255 /20:22557 /21:22602 /22:29441 /23:29089 /24:168288
/25:949 /26:1204 /27:618 /28:142 /29:9 /30:7
/31:0 /32:8
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2516 3932 bellsouth.net, inc.
4323 2329 3843 Time Warner Telecom
4766 1480 1848 Korea Telecom (KIX)
1785 1247 1783 PaeTec Communications, Inc.
8452 1140 1262 TEDATA
17488 1063 1316 Hathway IP Over Cable Interne
11492 1062 1146 Cable One
18566 1040 1059 Covad Communications
10620 958 1042 TVCABLE BOGOTA
7018 925 1540 AT&T WorldNet Services
Complete listing at http://thyme.apnic.net/current/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:1 4:13 8:263 12:2002 13:10 14:1
15:23 16:3 17:8 20:21 24:1431 27:99
31:1 32:47 33:12 38:671 40:98 41:2486
44:3 47:26 52:6 55:7 56:2 57:24
58:724 59:497 60:434 61:1071 62:1062 63:1979
64:3854 65:2353 66:4203 67:1844 68:1112 69:2836
70:714 71:243 72:1820 73:2 74:2292 75:252
76:309 77:859 78:633 79:414 80:1015 81:789
82:482 83:453 84:697 85:1060 86:466 87:704
88:330 89:1551 90:88 91:2755 92:505 93:1114
94:1426 95:596 96:280 97:314 98:548 99:28
108:32 109:481 110:353 111:502 112:261 113:286
114:402 115:556 116:1038 117:641 118:442 119:920
120:139 121:725 122:1432 123:897 124:1106 125:1294
128:210 129:209 130:193 131:560 132:246 133:17
134:193 135:44 136:226 137:173 138:255 139:92
140:482 141:135 142:353 143:383 144:476 145:52
146:428 147:165 148:614 149:288 150:153 151:169
152:261 153:167 154:2 155:324 156:155 157:325
158:107 159:375 160:314 161:185 162:262 163:179
164:407 165:346 166:475 167:393 168:783 169:160
170:705 171:51 172:2 173:739 174:644 175:93
176:1 178:93 180:477 182:60 183:254 184:45
186:383 187:346 188:1340 189:782 190:3640 192:5739
193:4693 194:3358 195:2769 196:1211 197:1 198:3567
199:3433 200:5308 201:1500 202:7983 203:8287 204:4062
205:2323 206:2528 207:3036 208:3893 209:3415 210:2503
211:1242 212:1735 213:1677 214:660 215:70 216:4613
217:1538 218:487 219:371 220:1106 221:400 222:315
223:1
End of report
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