Summary
nsc.nic.uk has one IP number , which also has a corresponding reverse pointer.
uk,
me.uk,
co.uk,
nic.uk,
sch.uk and at least 38 other hosts use this as a nameserver.
nic.uk is a domain controlled by eleven nameservers at
nic.uk themselves. All of them are on different IP networks. Incoming mail for
nic.uk is handled by two mailservers also at
nic.uk. They are on different IP networks.
nsc.nic.uk is hosted on a server in United States even though the hostname implies United Kingdom.