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What is a DNS A record?

An A record maps a hostname directly to an IPv4 address.

Last updated November 9, 2026

The short version

An A record maps a hostname directly to an IPv4 address. It is the most basic DNS record, and it works at the root of a domain, where a CNAME is not allowed. If the server's address changes, you need to update the record by hand, so prefer a CNAME where you can.

On EasyHost

ezhst domains list shows the IP to use for a root domain. Learn more.

Start for free

Install the skill, choose Global or Local, then tell your agent to deploy. No credit card, no config files.

npx ezhst skill install