What is DNS?

DNS (Domain Name System) is the internet's phone book: it converts names like settings.help into the numeric IP addresses computers actually connect to. Every page load starts with a DNS lookup.

Your ISP's DNS is the default, but you can switch to public resolvers like Cloudflare (1.1.1.1) or Google (8.8.8.8) in your router or device network settings — often slightly faster, and family-filtering variants can block adult content network-wide.