DNS zones

Administrative units that hold DNS records for a domain.

Reading time:: 5 min
Difficulty:: Intermediate
Estimated duration:: 5 min
Prerequisites:: None
Last updated:: 2026-07-15
Author:: empire

Definition

Administrative units that hold DNS records for a domain.

How it works

A zone is the portion of the DNS namespace a set of authoritative servers answer for. Mail domains usually live in one zone (or a subdomain zone) where MX, TXT, and CNAME records are published.

DNSDomain Name System — the lookup fabric email authentication depends on.

DNS zones

Definition

How it works

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DNS zones

Definition

How it works

▼Continue Learning