Having full control over your domain names is something quite crucial and being able to access and edit the DNS records for every one of them is among the things you have to look for when you search for a registration or a web hosting provider. Maybe you have heard about the so-called “name servers” that show where a domain address is hosted, but below them there is also a whole list 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 emails for a particular domain name. These records are used if you'd like to have your website with one provider and the emails with another, for example. You could also use a domain for a non-website service or direct the traffic to it by using special records. A lot of companies ask for an extra payment to grant access to edit particular DNS records besides the name servers.