Domain name system (DNS) is a set of protocols that allows computers to easily find each other on the Internet. DNS is made up of a hierarchy of servers, each of which caches a list of domain names.
When a user types a domain name into their browser, their computer queries a DNS server for the corresponding IP address.
DNS was designed to solve the problem of name resolution, which is the process of finding a hostname (such as www.google.com) on the Internet. Today, DNS is used to resolve domain names (such as google.
com) as well as hostnames (such as www.com).
DNS was created in the early days of the Internet, when computers were connected to the network using simple IP addresses. The Domain Name System was originally designed to allow different networks to interoperate.
Today, DNS is a cornerstone of the Internet infrastructure and is used by billions of users worldwide.
DNS is decentralized and is not controlled by any single entity. DNS is updated by a distributed network of servers, which makes it resilient to attacks.
DNS is a key part of the Internet infrastructure and is essential for the security and stability of the Internet.
