MX Lookup
Look up mail servers, MX priorities and published delivery routes.
Open toolFREE TOOLS · NO ACCOUNT REQUIRED
See what your email DNS publishes.
Look up public mail routing and authentication records. Clear results, with the limits of each check explained.
SPF Lookup
Find the SPF TXT record published for a sending domain.
Open toolDMARC Lookup
Read the DMARC policy at the exact domain you enter.
Open toolDKIM Lookup
Look up a DKIM public key using a domain and selector.
Open toolPublic DNS, explained
These tools query Google Public DNS over HTTPS. They read public records and do not send email or test a mailbox. For context, read our MX priority guide and email authentication guide.