Having full control of your domain names is something very crucial and being able to access and edit the DNS records for every one of them is one of the things you have to look for when you search for a registration or a hosting provider. Maybe you have heard about the so-called “name servers” that show where a domain name is hosted, but below them there is 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 handles the e-mails for a specific domain. These records are used if you wish to have your website with one provider and the e-mails with another, as an illustration. You can also use a domain for a non-website service or forward the traffic to it through special records. A lot of companies ask for an extra fee to give access to edit particular DNS records other than the name servers.
