A name server is a Domain Name System (DNS) server that serves DNS records for a domain. DNS records are often used to specify server IP addresses for domains.
When you type in
digitalocean.com into your browser’s URL bar, the browser sends a request to local DNS servers, known as DNS resolvers, asking for the IP address of
digitalocean.com. If the resolver does not have the IP address in cache, the resolver forwards the request through a structured hierarchy of other DNS name servers to locate the authoritative name servers for
digitalocean.com and return the IP address.
When you add a DNS record to your domain on the DigitalOcean platform, you are adding the record to an authoritative name server that is responsible for storing and serving your domain’s records.