Free ToolsMX & DNS Record Lookup
MX & DNS Record Lookup
Look up the DNS records behind any domain (MX, TXT, A, NS and CNAME) in one place. Handy for debugging mail routing, verifying changes, and checking a prospect's setup.
DNS Lookup
MX & DNS Record Lookup
Look up the mail servers (MX) and core DNS records for any domain: handy for diagnosing why email isn't sending or arriving.
How it works
Look up any DNS record fast
1
Enter a domain
Any domain works: yours or one you're investigating.
2
Pick a record type
Choose MX, TXT, A, NS or CNAME depending on what you need to see.
3
Read the results
We query public DNS live and show every matching record, formatted clearly.
Keep going
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FAQ
Common questions
What are MX records?
MX (Mail Exchange) records tell the internet which servers receive email for a domain. No MX records means the domain can't accept mail.
What's the difference between A, CNAME, TXT and NS records?
A maps a name to an IP, CNAME aliases one name to another, TXT holds text (SPF, DKIM, verification), and NS lists the domain's authoritative nameservers.
Why don't I see a record I expected?
DNS changes can take time to propagate, and some records only exist on subdomains. Double-check the exact hostname and try again shortly after making a change.
Is this lookup live?
Yes. Every lookup queries public DNS in real time from your browser. Nothing is cached or stored.
DNS, configured for you
Stop wrangling DNS records
MailOptimal provisions sending domains and mailboxes with every DNS record (MX, SPF, DKIM, DMARC) configured automatically, so your infrastructure is correct from day one.
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