Free tool
check any domain’s dns.
See exactly what a domain resolves to right now — every record type, as the internet sees it. No sign-up, no email.
what each record actually does.
A / AAAA
Where the domain points — an IPv4 or IPv6 address. This is what turns a name into a server.
CNAME
An alias pointing one name at another. Common for www and for services like a status page.
MX
Where email for the domain is delivered. Wrong MX records are the usual reason mail stops arriving.
TXT
Free-text records — this is where SPF, DKIM and DMARC live, along with domain verification tokens.
NS
The nameservers responsible for the domain. Changing these is how you move DNS to a new provider.
CAA
Which certificate authorities may issue SSL certificates for the domain — a guard against mis-issuance.
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dns questions
What does this DNS checker actually show?
The DNS records currently published for a domain, as seen by a public resolver — the same view the rest of the internet has. That includes where the domain points (A/AAAA), where its email goes (MX), and its TXT records, which is where SPF, DKIM and DMARC live.
Why do my changes not show up here yet?
DNS changes take time to propagate, governed by each record's TTL. If a record had a 24-hour TTL, resolvers may keep serving the old value for up to that long after you change it. Lowering the TTL before making a change speeds this up — see our SPF and DKIM guide for how that works in practice.
Is this the same as a WHOIS lookup?
No. WHOIS tells you who registered a domain and when it expires. A DNS lookup tells you how the domain is configured — where it points and how its email is routed. They answer different questions, and this tool does the second.
Do you store the domains I look up?
No. Lookups are passed straight to a public resolver and the result is returned to you; nothing is logged against your search. The tool is rate-limited only to keep it from being abused.