DNS i dominis
Comprovador DNS en línia
Consulta els registres DNS principals d'un domini de manera ràpida i clara.
DNS query
Enter a domain or a complete URL. The query uses the server's DNS resolver.
DNS guide
What is DNS?
DNS translates readable domain names such as example.com into the addresses and services used by Internet servers.
Which DNS records exist?
A and AAAA point to IPv4 and IPv6 addresses; CNAME creates aliases; MX identifies mail servers; NS delegates authority; TXT publishes technical text; SOA describes a zone and CAA restricts certificate authorities.
Why check DNS?
DNS lookups help configure domains, diagnose issues, review email, verify changes and understand how a zone responds.
What is TTL?
TTL states how long a record may remain cached. Changes may take time to appear while existing caches expire.
Frequently asked questions
Frequently asked questions
How do I check a domain's DNS?
Enter the domain, choose all records or one type, and select Check DNS.
What is the difference between A and AAAA?
A contains an IPv4 address and AAAA contains an IPv6 address.
What is an MX record?
MX identifies the servers that receive a domain's email and their priority.
What is a TXT record for?
TXT publishes text used for SPF, verification and service policies, among other purposes.
What does TTL mean?
It is a record's cache lifetime, normally expressed in seconds.
Why is a DNS change not visible yet?
DNS caches and resolvers may keep the previous value until its TTL expires.
What is a CAA record?
CAA specifies which certificate authorities may issue certificates for a domain.