Free MX Record Lookup

MX records specify which mail servers handle email for a domain and their priority order.

Enter a domain name and click Lookup to retrieve its MX records instantly.

Yes, completely free.

Absolutely. The MX Record Lookup processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.

Yes, the MX Record Lookup is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.

No account or registration is needed. Simply open the MX Record Lookup in your browser and start using it immediately. There are no sign-up walls or usage restrictions.

The MX Record Lookup works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For the best experience, use the latest version of your preferred browser.

The priority is a number attached to each mail server, and the lowest value wins. When another server sends email to your domain, it tries the MX record with the smallest priority number first; it only moves to a higher number if that preferred host is unreachable. So priority 10 is tried before priority 20, and the size of the number is just relative ranking, not a quality score. When two or more records share the same priority, senders pick among them roughly evenly, which spreads load across equal servers. This tool sorts results by priority automatically and highlights the first row as the preferred host, so you can see at a glance which server handles your mail first. Enter a domain above to view its servers in delivery order, with each priority value shown beside its mail server.

Most domains publish several MX records for redundancy and load handling. If the primary mail server is down for maintenance or fails, a sending server falls back to the next-lowest priority host, so messages queue and deliver instead of bouncing. Large providers like Google Workspace and Microsoft 365 list several MX hosts pointing at their infrastructure for exactly this reason. Records that share the same priority number act as a load-balanced pool, distributing incoming mail across equal servers. Seeing only one MX record is not wrong, but it means there is no backup path if that single host goes offline. Looking up a domain here shows the full set of servers and their priorities together, so you can audit whether a domain has proper redundancy or relies on one host. Type a domain above to count its records and review their fallback order.

An A record maps a hostname to an IPv4 address, telling browsers and clients which IP to connect to for a website or service. An MX record does something different: it names the hostname of the mail server responsible for receiving email at a domain, plus a priority for ordering. Crucially, an MX record points to a name, not an IP, and that mail server name then needs its own A or AAAA record to resolve to an actual address. So the two work together for email but answer separate questions: A says "where is this host," while MX says "which host accepts mail for this domain." This tool queries specifically for MX records, returning each mail server, its priority, and TTL. Enter a domain above to see its mail routing without sifting through unrelated DNS record types.

A blank MX result does not always mean a domain cannot accept mail. Under the email standards, if a domain publishes no MX records but does have an A or AAAA record, sending servers fall back to delivering directly to that address as an implicit mail host. Some small setups rely on this fallback intentionally. More often, an empty result means email is simply not configured, the domain is parked, or you mistyped it, in which case this tool shows "No MX records found." A separate "NXDOMAIN" message means the domain itself does not exist in DNS at all. If you recently changed records, caching may also delay them from appearing. Look up your domain above, and if it returns nothing unexpectedly, double-check the spelling and confirm your DNS provider actually saved the MX entries.

MX changes are not instant because DNS answers are cached along the way, and each record carries a TTL (time-to-live) value measured in seconds that tells resolvers how long they may reuse a cached copy before checking again. If your old MX record had a TTL of 3600, some resolvers may keep serving the previous server for up to an hour after you edit it. To make a planned migration propagate faster, lower the TTL a day or two ahead of the change so caches expire quickly when you switch. This tool displays the current TTL beside every record, so you can estimate how long stale answers might linger. After editing your records, look up the domain here periodically; once the new mail servers appear with the expected priorities, the change has propagated for that resolver path.