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.