MX Lookup

Find the mail servers (MX records) of a domain and see which email provider it uses.

How to use the MX Lookup

  1. Enter a domain name such as example.com.
  2. Choose the record type if needed.
  3. Click the button: records are fetched live from public DNS resolvers.
  4. Read the records, TTLs and checks in the table.

About this tool

Find the mail servers (MX records) of a domain and see which email provider it uses. It is part of the free SEO & Web Tools collection on Online Tools Harbor.

Frequently asked questions

Which DNS resolver is used?

Queries go to public DNS-over-HTTPS resolvers (Cloudflare 1.1.1.1 and Google 8.8.8.8), so you see what the rest of the internet sees.

How long does a DNS change take to update?

Usually minutes, but resolvers may cache the old value until its TTL expires, which can take up to 24-48 hours for long TTLs.

Is the MX Lookup free?

Yes. The MX Lookup is completely free to use, with no sign-up and no limits on normal use.

Does it work on mobile?

Yes, it works in any modern browser on phones, tablets and computers. No app to install.

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