DNS Diagnostic

Deep-inspect any domain's DNS health — direct queries, no third-party APIs.

Diagnosing mail.1.1.1.1…
Preparing…
Preparing… 0%
mail.1.1.1.1
Pass 0 Fail 0 Warn 0 Info 0
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Also check for mail.1.1.1.1
WHOIS / RDAP
Registrar, expiry & ownership details
DNSSEC Validation
Chain of trust & signature verification
Email Health
SPF, DKIM, DMARC & deliverability score
TLS Certificate
CT log history, SANs & cert details
DNS Propagation
Live check across global resolvers