MX Lookup
Find the mail servers responsible for accepting email for a domain, in priority order, with the provider behind each one.
Queried directly against the domain's own authoritative nameservers, right now.
Enter a domain to find its mail servers
Each mail server appears with its priority, resolved IP, and provider when recognized.
MX (Mail Exchange) records tell the rest of the internet which mail servers are responsible for accepting email on behalf of a domain. Each MX record has a priority — a lower number is tried first — so a domain can list a primary mail server plus one or more fallbacks.
This looks up every MX record for a domain, sorted by priority, and resolves each mail server's own hostname to an IP address. Where the hostname matches a widely-used provider (Google Workspace, Microsoft 365, Zoho Mail, and others), that provider is identified directly rather than leaving a bare hostname to decode.
A domain with no MX records at all typically means it isn't set up to receive email, whether or not the domain is otherwise in use for a website. For the other half of email trust — whether mail claiming to be *from* this domain can be verified — see SPF, DKIM, and DMARC.