Having full control of your domain names is something rather necessary and being able to access and edit the DNS records for every one of them is one of the things you should look for when you search for a registration or a shared hosting provider. Perhaps you have heard of the so-called “name servers” that show where a domain name is hosted, but below them you will find a whole list of records, for example the A record, which is the IP address of the server hosting the site, and the MX records, which show the server that deals with the emails for a specific domain. These records are used if you would like have your website with one provider and the emails with another, for instance. You could also use a domain name for a non-website service or direct the traffic to it using special records. Many companies ask for an additional payment to grant access to edit specific DNS records besides the name servers.