Free domain tool

DNS Checker

Check a domain’s live DNS records — A, AAAA, CNAME, MX, NS, TXT, SOA and CAA — plus reverse DNS.

What is a DNS checker?

DNS is the internet’s address book — it maps your domain to the servers that run your website, email and other services. This tool queries live DNS records from a fast global resolver over an encrypted connection, so you can verify exactly what the world sees for your domain, including reverse DNS.

DNS record types explained

A / AAAA: The IPv4 / IPv6 address your domain points to.
CNAME: An alias that points one name to another.
MX: Mail servers that receive email for the domain.
NS: The authoritative nameservers for the domain.
TXT: Text records — often SPF, DKIM and domain verification.
SOA: The “start of authority” with the primary nameserver and zone settings.
CAA: Which certificate authorities are allowed to issue SSL for the domain.

Frequently asked questions

DNS changes take time to propagate as caches expire (the TTL). It can take from a few minutes up to 48 hours.

A PTR record maps an IP address back to a hostname — often used by mail servers to verify senders.

Queries run against a fast public resolver over an encrypted (DNS-over-HTTPS) connection, reflecting the live global view.

Yes — it’s free and needs no account.