Having full control over your domain names is something quite important and being able to access and edit the DNS records for every one of them is among the things you should look for when you search for a registration or a shared hosting provider. Maybe you have heard about the so-called “name servers” that show where a domain name is hosted, but below them you will find a whole list of records, for example the A record, which is the IP address of the server hosting the site, and the MX records, which show the server that manages the e-mails for a certain domain. These records are used if you'd like to have your web site with one service provider and the emails with another, for instance. Additionally you can use a domain for a non-website service or forward the traffic to it through special records. Many companies ask for an extra payment to provide access to edit specific DNS records apart from the name servers.