// RESOLVER
DNS Record Lookup
Resolve the A, AAAA, MX, NS, TXT, CNAME and SOA records a domain publishes.
// How DNS records work
DNS (the Domain Name System) is the internet's address book: it translates human-friendly names like example.com into the IP addresses machines actually connect to. Every domain publishes a zone — a set of records that tell the internet where to send each kind of traffic.
A and AAAA records point to IPv4 and IPv6 addresses. MX records direct email to the right mail servers, in priority order. NS records list the authoritative name servers for the zone. TXT records hold verification strings and policy data such as SPF and DMARC. CNAME creates an alias to another name, and SOA describes the zone itself — its primary name server and its refresh timings.
This tool resolves records over DNS-over-HTTPS, so results come from a public resolver rather than whatever your network happens to be using. That makes it useful for checking whether a change has propagated, confirming mail routing before you cut over, or seeing what the rest of the world sees for a domain you don't control.
// Frequently asked questions
- What is a DNS record?
- An entry in a domain's zone that tells the internet where to send a particular kind of traffic — an A record for the website's IP, an MX record for email, and so on.
- What is an MX record?
- A Mail Exchange record specifies which mail servers accept email for a domain, and in what priority order. The lowest priority number is tried first.
- Why do my results differ from another DNS checker?
- Records are cached for the length of their TTL, and different resolvers expire that cache at different moments. After a change, results vary between resolvers until every cache has refreshed.
- What is a TTL?
- Time To Live — how many seconds a resolver may cache a record before asking again. A low TTL propagates changes faster; a high one reduces lookups.