Domain MX lookup

Lookup MX DNS records of a domain name online

This tool will scan the domain DNS records for the MX entries.

About this tool

This tool uses the Cloudflare DNS over HTTPS API to fetch the MX DNS records of a domain name. It will return the mail servers responsible for receiving email messages on behalf of the domain.

What are DNS records?

DNS records are used to translate human-readable domain names into IP addresses. It can also associates a domain name with various information like mail servers, SPF records, etc.

Most common DNS records types

  • NS (Name Server): Specifies the DNS servers for a domain.
  • A (Address): Maps a domain name to an IP address.
  • AAAA (IPv6 Address): Maps a domain name to an IPv6 address.
  • CNAME (Canonical Name): Maps an alias domain name to a canonical domain name.
  • MX (Mail Exchange): Specifies the mail servers for a domain.
  • TXT (Text): Holds text information for a domain, often used for SPF records or domain ownership validation.

What is an MX record?

An MX record (Mail Exchange) is a type of DNS record that specifies the mail servers responsible for receiving email messages on behalf of a domain name. It is used to route emails to the correct mail servers.

An MX record is composed of two parts: the priority and the domain name. The priority is a number that indicates the order in which mail servers should be used. The lower the number, the higher the priority. If two mail servers have the same priority, the sending mail server will choose one randomly.