Each domain name that is registered and hosted has quite a lot of DNS records - some of them are created automatically when you host a domain, others can be created manually if needed. For example, the A record of a domain is its IP address i.e. this record reveals where the site is situated; the MX records show where the emails are managed, while with an SRV record you can use a domain address for unconventional purposes, including a Voice-over-IP service. The ability to set up and modify specific records permits you to have different services with different providers if, for illustration, your present host provides dependable web hosting, but has difficulties with the email service, or you simply prefer to get a particular service from a specific company. Though you will be able to set up and edit these records freely and with no limitations as you own a given domain, lots of companies charge extra to give you this option.