A DNS server or names server is a computer connected to the Internet. It contains information about the services related to a domain name and answers any queries about this information. For example, it translates a domain name into an IP address to enable access to a website/s and/or email inboxes linked to a domain name.

DNSSEC (Domain Name System Security Extensions) technology authenticates DNS records using cryptographic keys to ensure that each domain fits perfectly into a trusted chain within the tree of the Internet-based naming system.