Having full control over your domains is something rather crucial and to be able to access and edit the DNS records for every single one of them is one of the things you need to look for when you search for a registration or a cloud hosting provider. You may have heard about the so-called “name servers” that show where a domain is hosted, but below them you will find a whole group of records, for example 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 e-mails for a specific domain. These records are employed if you'd like to have your site with one provider and the emails with another, for example. You can also use a domain for a non-website service or forward the traffic to it using special records. A lot of companies ask for an extra payment to give access to edit specific DNS records besides the name servers.