Domain tools
One domain, one answer, in plain English. No account. Every result is a live reading.
WHOIS Lookup
Registrar, owner, country, and the dates that matter.
Domain Expiry
How long you have before the domain lapses.
DNS Health Check
Nameservers, addresses, mail, and whether the site answers.
Email Security Check
SPF, DMARC, DKIM and MTA-STS, and whether they actually protect you.
SSL Certificate Check
Who issued it, and when it expires.
DNSSEC Check
Whether DNSSEC is on, and whether CAA limits who can issue certificates.
DNS Propagation
Ask several public resolvers the same question and see if they agree.
Blacklist Check
Check the domain’s address against public DNS blocklists.