Having full control over your domain names is something very crucial and being able to access and edit the DNS records for each of them is among the things you should look for when you search for a registration or a shared hosting provider. You may have heard of the so-called “name servers” that show where a domain is hosted, but below them there is also 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 deals with the emails for a certain domain. These records are employed if you'd like to have your site with one provider and the e-mails with another, for example. Additionally you can use a domain address for a non-website service or direct the traffic to it using special records. Some companies ask for an additional payment to grant access to edit specific DNS records other than the name servers.