An overview of DNS servers and their role in the Domain Name System. A DNS server is a computer that stores a database of domain names and their corresponding IP addresses. When you type a domain name into your web browser, your computer queries a DNS server to find the correct IP address. DNS servers are essential for translating human-friendly domain names into machine-readable IP addresses. There are several types of DNS servers, including authoritative DNS servers, recursive DNS servers, and caching DNS servers. By using a combination of these servers, the DNS system can efficiently route data across the internet.