What Is DNS? How the Domain Name System Works, Record Types and Fixes (2026)

What Is DNS? How the Domain Name System Works, Record Types and Fixes (2026)

What is DNS? A complete guide to the Domain Name System: how it works, the record types and how to choose the right provider for your site 💡 Affiliate Disclosure: This post contains affiliate links. If you buy through them, we may earn a commission at no extra cost to you. Affiliate Disclosure . 📅 Updated October 2026 A complete guide with a reading time of about 20 minutes. You read everywhere that DNS is "the phone book of the internet", and you hear that changing it can speed up your connection and that something called DNSSEC protects your site from hijacking, but rarely does anyone explain frankly: what really happens when you open a website? How many technical steps does the page go through before it appears? And why can your site vanish completely just because one DNS record was set wrongly? The Domain Name System (DNS) is the infrastructure that makes the internet usable by humans. Without it, you would have to remember a long IP number for every site instead of an easy…