DNS records
A, AAAA, MX, NS, TXT, SOA — the records that say where the domain lives, who handles its mail, and which servers are authoritative.
Email authentication
SPF presence + validity, DKIM (auto-probes common selectors when none is known — no false "not found"), DMARC policy + reporting address.
DNSSEC
Whether the chain of trust is intact — DS at the parent, DNSKEY at the domain, AD bit from Cloudflare DoH for headline status.
SSL / TLS certificate
Issuer, validity dates, expiry countdown, and SAN coverage — surfaced from the SSL inspector.
WHOIS
Registrar, creation and expiry dates, domain age, and authoritative nameservers — RDAP-first with legacy fallback.
Honest per-section status
Each section labeled with its own status (OK / warning / fail / unavailable). No opaque single "health score" — when something can't be checked, the section says so.
Every check reuses an existing tool's endpoint, so the same caching, upstream caps, and origin guards protect this page automatically. For a single deep-dive on any section, use the linked tool directly.