How would I go about identifying what company manages a domain name? I have a new client who's wanting me to take over the development of her website due to the fact that her previous website consultant is no longer responding to her inquiries. She has no idea who is managing the domain she owns, so I'm trying to see if it's possible to identify the company such that she doesn't have to register a new domain name.
I'd start with a whois lookup: http://www.whois.net/ and make phone calls from there.