You need the -d (enables Debug mode). But then you'll need to send that query to the authoritative server. So...
Run:
nslookup -q=ns sitename.co.uk
That should give you the Name Servers responsible for the domain. Take those, and run:
nslookup -d
www.sitename.co.uk NameServer
Replacing NameServer with one of the entries from the first query. The -d is important, that runs Debug mode for NsLookup, the TTL will not display without it.
Chris
