A nameserver, or DNS server, is a computer system responsible for linking domain names to their corresponding IP addresses. Domain names serve as human-readable identifiers for websites, while IP addresses are unique numerical labels computers use to communicate on the internet.
When a user enters a domain name in their web browser, the browser contacts a nameserver to translate the domain name into its associated IP address. The nameserver searches for the IP address linked to the domain name and sends it back to the browser, allowing the user to connect to the desired website or resource.
Nameservers play a crucial role in internet infrastructure, making it easier for users worldwide to access websites. Without nameservers, users would have to remember and input IP addresses directly, which would be inconvenient and challenging for most people.