Is it possible to look up the owner of a domain name?

There are a number of ways, but the easiest is to perform a 'whois' search on the domain.

Most domain registrars have this service, but you can search the internet for 'whois' you'll find a number of sites offering these services.

Some domain information can be private, so you may have to inquire through a service provider to obtain information about the owner of the domain.