Having full control of your domains is something rather important and to be able to access and edit the DNS records for every one of them is among the things you need to look for when you search for a registration or a website hosting provider. You might have heard about the so-called “name servers” that show where a domain is hosted, but below them there is also a whole group of records, like 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 company and the e-mails with another, as an illustration. You could also use a domain name for a non-website service or forward the traffic to it through special records. Some companies ask for an extra payment to give access to edit particular DNS records apart from the name servers.