Having total control over your domain names is something quite crucial and to be 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 shared hosting provider. You might have heard of the so-called “name servers” that show where a domain address is hosted, but below them there's 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 e-mails for a particular domain. These records are employed if you would like have your site with one company and the e-mails with another, for example. You could also use a domain name for a non-website service or direct the traffic to it through special records. Many companies ask for an additional payment to give access to edit specific DNS records other than the name servers.