Having complete control over your domain names is something really necessary and to be able to access and edit the DNS records for each of them is one of the things you need to 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 address is hosted, but below them you will find a whole set of records, such as the A record, which is the IP address of the server hosting the website, and the MX records, which show the server that handles the e-mails for a particular domain. These records are used if you'd like to have your site with one company and the emails with another, for instance. You may also use a domain for a non-website service or forward the traffic to it through special records. Some companies ask for an extra fee to give access to edit particular DNS records apart from the name servers.