A domain host is an internet service that manages your domain name, such as, tophostingadvisor.com. Domain hosts use Domain Name System (DNS) records to connect your domain name with email, websites, and other web services. Popular domain hosts include Hostinger, Bluehost, Hostwinds, Hostgator etc.

A domain name is an identification string that defines a realm of administrative autonomy, authority or control within the Internet. Domain names are used in various networking contexts and for application-specific naming and addressing purposes. In general, a domain name identifies a network domain, or it represents an Internet Protocol (IP) resource, such as a personal computer used to access the Internet, a server computer hosting a website, or the web site itself or any other service communicated via the Internet. In 2017, 330.6 million domain names had been registered.