Multi Tool for DNS, SSL & Uptime

Inspect certificate details, SANs, protocol, cipher and chain.

Lookup specific DNS records for a hostname.

Resolve an IP address to its PTR (reverse DNS) record.

Quick overview of A, AAAA, MX and NS records.

Get registration and ownership information for domains or IPs.

Simple HTTP health check and response time.

Inspect HTTP response status and headers.

Follow redirects and see each HTTP hop.

Check basic email security records for your domain.

Validate SPF syntax and common issues for your domain.

Check if DMARC exists and validate common issues (policy, rua, alignment).

Generate a DMARC TXT record for your domain.

See if your zone appears to use DNSSEC.

Combined score for TLS, DNSSEC, email auth and HTTP security headers.

MX, IPs, PTR and email auth signals for outbound mail.