Having 100 % control of your domain names is something rather crucial and being 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 cloud hosting provider. You might have heard about the so-called “name servers” that show where a domain address is hosted, but below them there is also a whole set of records, for example the A record, which is the IP address of the server hosting the site, and the MX records, which show the server that handles the emails for a certain domain name. These records are used if you'd like to have your web site with one service 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 using special records. Many companies ask for an additional payment to give access to edit particular DNS records apart from the name servers.