How can I tell?
Traceroot any good?
C:\Windows\System32>tracert bbc.com
Tracing route to bbc.com [212.58.251.195]
over a maximum of 30 hops:
1 1 ms 1 ms 1 ms BThomehub.home [192.168.1.254]
2 9 ms 10 ms 9 ms 217.32.141.8
3 9 ms 9 ms 17 ms 217.32.140.254
4 14 ms 15 ms 15 ms 217.41.216.154
5 13 ms 13 ms 13 ms 213.120.182.65
6 13 ms 14 ms 14 ms 31.55.164.107
7 14 ms 14 ms 14 ms acc1-10GigE-0-0-0-6.bm.21cn-ipp.bt.net [109.159.
248.82]
8 25 ms 21 ms 21 ms core2-te-0-15-0-0.ilford.ukcore.bt.net [109.159.
248.14]
9 76 ms 22 ms 22 ms peer2-xe0-1-0.telehouse.ukcore.bt.net [109.159.2
54.138]
10 21 ms 19 ms 20 ms 194.74.65.42
11 * * * Request timed out.
12 * * * Request timed out.
13 36 ms 23 ms 19 ms ae0.er01.telhc.bbc.co.uk [132.185.254.109]
14 22 ms 23 ms 22 ms 132.185.255.140
15 21 ms 22 ms 21 ms www-vip.telhc.bbc.co.uk [212.58.251.195]