DNS (Domain Name System) is a system that translates human-readable domain names into machine-readable IP addresses. It acts like the internet’s phonebook, allowing users to access websites using names instead of numerical IP addresses.
In networking and web infrastructure, DNS is essential for connecting users to the correct servers when they enter a website URL in a browser. Without DNS, users would need to remember complex IP addresses instead of simple domain names.
For example:
- When a user types
google.com, DNS converts it into an IP address so the browser can load the website. - A website like
example.comis mapped to a server IP that hosts its content. - Email services use DNS records to route messages correctly.
- A mobile app connects to backend servers using domain names resolved by DNS.
Common types and concepts related to DNS include:
- Domain Names
- IP Addresses (IPv4 / IPv6)
- DNS Records (A, AAAA, CNAME, MX)
- DNS Servers
- Name Servers
- DNS Resolution
- Web Hosting
- Internet Protocol (IP)
- Domain Registration
