Having 100 % control over your domain names is something quite crucial and to be able to access and edit the DNS records for any of them is among the things you need to look for when you search for a registration or a web hosting provider. Maybe you have heard of the so-called “name servers” that show where a domain is hosted, but below them there's a whole set 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 particular domain. These records are used if you'd like to have your website with one company and the e-mails with another, for instance. Additionally you can use a domain address for a non-website service or forward the traffic to it through special records. Many companies ask for an extra payment to provide access to edit specific DNS records besides the name servers.