Tool guide
DNS Record Checker
A DNS record checker helps you see the public records that decide where a domain points and how email is handled.
Records Worth Checking
A and AAAA records point traffic to IPv4 and IPv6 addresses. CNAME records point one name to another name.
MX records handle mail routing, while TXT records often include SPF, verification tokens, and other domain policies.
Email Readiness
For email, check MX records, SPF in TXT records, and DMARC on the _dmarc subdomain.
Missing email records may be fine for domains that never send mail, but business domains usually need a clean setup to protect deliverability and brand trust.
When DNS Explains A Website Problem
DNS can explain a site pointing to the wrong host, a www and non-www mismatch, or a CDN migration that has not fully settled.
After DNS changes, remember that caches and TTL values can make different networks see different answers for a while.
Common questions
What DNS records should I check first?
For websites, check A, AAAA, and CNAME. For email, check MX, SPF, and DMARC.
What is an SPF record?
SPF is usually published as a TXT record and lists which services are allowed to send email for the domain.
Where is DMARC published?
DMARC is published as a TXT record on the _dmarc subdomain, such as _dmarc.example.com.
Why do DNS results differ by location?
Resolvers cache DNS answers. After changes, different networks may update at different times depending on TTL and cache behavior.