What is the difference between an A record and a CNAME?

An A record maps a hostname directly to an IPv4 address. A CNAME aliases one hostname to another name, which is then resolved. A CNAME cannot coexist with other records at the same name and is not allowed at the zone apex.

Which record type is used for email?

MX records specify the mail servers for a domain, each with a priority value where a lower number is preferred. SPF, DKIM and DMARC policies are published as TXT records.

Is any data sent anywhere?

No — this is a static reference that runs entirely in your browser. Nothing is uploaded.

DNS Record Types Reference

Searchable list of DNS record types — A, AAAA, CNAME, MX, TXT and more.

DNS record types reference

A searchable reference of the DNS record types you work with most, from A and AAAA to CNAME, MX, TXT, NS, SOA, CAA, SRV and the DNSSEC records. Each entry explains what the record does and shows a sample zone-file line.

Type a record type or keyword — for example CNAME, mail or dnssec — to filter the list. Everything runs in your browser.