DNS Lookup

Check any domain's DNS records - A, AAAA, CNAME, NS, MX, TXT, SOA and CAA, instantly, using secure DNS-over-HTTPS.

How DNS works

The Domain Name Systemis the internet's phone book: it translates human-friendly names like example.com into the IP addresses machines use. When you visit a site, your device asks a DNS resolver for the domain's records, caches the answer for its TTL, and connects to the returned address.

Common record types

A / AAAA: the IPv4 / IPv6 address of the host.
CNAME: an alias pointing to another domain.
MX: mail servers (see our MX lookup).
TXT: verification and email policies like SPF and DMARC.
NS: the domain's authoritative name servers.

Related tools

Look up a hostname from an IP with Reverse DNS, or check your own connection on the home page.

Frequently asked questions

What is a DNS lookup?

A DNS lookup queries the Domain Name System to find the records tied to a domain, such as the IP address (A/AAAA), mail servers (MX) or text records (TXT). It's how names like example.com turn into addresses computers can reach.

What do the different record types mean?

A = IPv4 address, AAAA = IPv6 address, CNAME = alias to another name, NS = authoritative name servers, MX = mail servers, TXT = free-form text (often SPF/verification), SOA = zone info, CAA = which CAs may issue certificates.

What is TTL?

TTL (time to live) is how long, in seconds, a record may be cached by resolvers before they re-check. Lower TTLs propagate changes faster but mean more lookups.

Is this the same as nslookup?

It does the same job as the nslookup and dig commands, but it runs in your browser over secure DNS-over-HTTPS, so there's no terminal needed.