Any active domain name which is added in a hosting account features a variety of records that enable it to work properly. In the typical case, the name servers (NS records) show the location where the Internet domain is hosted and they're set on the side of the registrar company, but on the lower level there are specific records created through the hosting company like A (IP address of the website/server), MX (email server), SRV (employing a domain address for non-website purposes on a specific port number like Voice-over-IP), and so on. By having access to these records and by having the capacity to modify them, you may have your site with company A and your e-mails with company B, for illustration. This offers you more overall flexibility because you can choose the best provider for every single one of these services and you do not have to stick to a single company. After you select a hosting company, you have to make sure that you have access to all DNS records freely because some providers have an additional fee for this feature.