Our nameservers are:

ns1.stackdns.com
ns2.stackdns.com
ns3.stackdns.com
ns4.stackdns.com

Any newly registered domain names (with us) will be automatically assigned these nameservers. If you are wishing to use a domain name registered elsewhere then you will need to update the DNS entries to the above.

Please note that DNS changes take a while to propagate around the internet so in extreme cases it could be 48 hours before you see the change. We have no control over this.