A and AAAA
The address of the server your website is on. A is the older kind of address (IPv4), AAAA the newer kind (IPv6).
Who holds that address? Free IP lookup →Free tool
Free DNS lookup
Where does your domain point, and who handles its email? Type a domain to see its A, AAAA, CNAME, MX, NS, TXT, CAA and SOA records in one go. It runs in your browser, with no signup, and we keep no record of what you look up.
Your browser asks a public DNS resolver directly. Nothing is sent to us.
Looking up the records…
Records are there. Are they protecting you?
A DNS lookup shows what is published. The free domain security checker grades it: whether someone could send email pretending to be you, and whether anyone could get a certificate for your name.
What each DNS record does
DNS is the internet's address book. Each type of record answers one question about your domain.
CNAME
A nickname: this name is really another name, so look that one up instead. Common on www and on services you rent.
MX
Which servers receive your email. The lowest number is tried first. No MX means no email to this domain.
NS
Which company answers for your domain. Whoever runs these servers controls every other record.
TXT
Free text, used to prove you own the domain and to say who may send email as you (SPF and DMARC live here).
Check Your Domain Free →CAA and SOA
CAA lists who may issue certificates for you. SOA is the technical header of the zone: its main server and how often copies refresh.
Free CAA record checker →How this tool handles your data
The lookup runs in your browser, not on our server. Your browser asks Cloudflare's public DNS resolver (or Google's, if Cloudflare does not answer) over an encrypted connection. They see the name as they would for any DNS lookup, under their own privacy policies.
We keep no record of what you look up, and nothing about you. Our own analytics count that a lookup happened, never the domain. Full detail is in our privacy policy.
Questions about the DNS lookup
Is this DNS lookup free, and do I need to sign up?
It is free and there is no signup. You do not enter an email address.
Do you record which domains I look up?
No. The lookup runs in your own browser, which asks a public DNS resolver (Cloudflare, or Google if Cloudflare does not answer) directly. The domain never reaches our server. Our own analytics count that a lookup happened, and nothing else.
Why do my results differ from another DNS checker?
Records are copied around the internet and kept for a while, for as long as the time to live on each record says. If you changed a record recently, some resolvers may still hold the old one until that time runs out.
Can I look up a record like _dmarc?
Yes. Type the full name, for example _dmarc.yourbusiness.co.ke, and look at the TXT row.
What does "no records of this type" mean?
The domain exists but has nothing of that type. That is normal for some types, such as CNAME on a main domain. A missing MX record means the domain cannot receive email.
Get it fixed
Want your DNS and email locked down properly?
DNS and email security is part of the Security Review. We fix problems in stages so nothing goes offline, write down what changed, and check again with you at the end.