Having 100 % control over your domain names is something quite important and to be able to access and edit the DNS records for every single one of them is one of the things you should look for when you search for a registration or a shared website hosting provider. You may have heard of the so-called “name servers” that show where a domain is hosted, but below them there is a whole list of records, such as the A record, which is the IP address of the server hosting the site, and the MX records, which show the server that deals with the e-mails for a specific domain name. These records are employed if you'd like to have your web site with one provider and the emails with another, for instance. Additionally you can use a domain name for a non-website service or direct the traffic to it through special records. Many companies ask for an extra payment to grant access to edit certain DNS records apart from the name servers.