Understanding DNS Records and How They Work

DNS records tell the internet how to reach your domain. A records point to IPv4 addresses, AAAA records point to IPv6 addresses, and CNAME records alias one hostname to another.

MX records handle email routing. TXT records are commonly used for verification, SPF, DKIM, DMARC, and other security or ownership checks.

TTL controls how long resolvers can cache an answer. A long TTL reduces repeated lookups, but it also means migrations and fixes may take longer to appear everywhere.

Before changing hosting, CDN, or email providers, check existing records and plan the order of changes. DNS mistakes are small text edits with very visible consequences.