What Is a Zone File? Understanding DNS Zone Structure (opens in new tab)

Every domain's DNS records have to live somewhere. That somewhere is a zone file: a text-based blueprint that defines how a domain resolves, where its email goes, which servers are authoritative, and dozens of other instructions that make the domain work. If you've ever managed DNS through a provider's dashboard, you've been editing a zone file without seeing it. The dashboard is just a friendly interface over the underlying structure. Understanding the zone file demystifies a lot of DNS. It ...