Source: https://uptimeify.io/resources/platform-and-support/glossary/dns

# DNS (Domain Name System)

> The Domain Name System (DNS) translates human-readable domain names like deinkunde.com into the IP addresses computers use to connect.

DNS is the internet's address book. Every request starts with a DNS lookup; if it fails or returns the wrong record, users cannot reach your site even when the server itself is healthy. DNS problems are a common, hard-to-spot cause of outages.

Monitoring DNS records (A, AAAA, MX, TXT, and more) catches misconfigurations, hijacks, and propagation issues before they take you offline.