Having full control of your domains is something really necessary and being able to access and edit the DNS records for every single one of them is among the things you have to look for when you search for a registration or a shared web hosting provider. Maybe you have heard of the so-called “name servers” that show where a domain 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 employed if you'd like to 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 forward the traffic to it using special records. Many companies ask for an extra fee to grant access to edit specific DNS records apart from the name servers.