The domain toolkit / 12 free tools
Every detail.
A little more clarity.
Free tools for your domain, email and website. Choose a focused check or run a complete health report.
Domain health checker
Check your domain's DNS, email authentication, HTTPS, certificate and registration in one clear, free report.
EmailDMARC checker
Look up your DMARC record, understand none, quarantine and reject policies, and inspect alignment and reporting settings.
EmailSPF checker
Inspect SPF mechanisms, soft-fail and hard-fail policies, duplicate records and first-level includes for your domain.
EmailDKIM checker
Check a known DKIM selector's DNS key and understand revoked, missing or malformed keys without guessing your selector.
EmailMX lookup
Find mail exchange records and priorities, identify null MX, and see where incoming email is directed.
DNSDNS checker
Inspect your domain's public DNS records with plain-language explanations of addresses, aliases, mail servers and nameservers.
WebsiteSSL certificate checker
Check a website certificate's trust, hostname, issuer, validity dates and negotiated TLS version.
WebsiteSecurity header checker
Inspect HSTS, Content Security Policy, nosniff, Referrer Policy and Permissions Policy on your website's response.
DomainDomain expiry checker
Find registry expiration dates, creation dates, registrar, status and nameservers using public RDAP registration data.
DNSDNSSEC checker
Inspect DNSSEC key and delegation records and distinguish published signing data from a fully validated chain of trust.
WebsiteRedirect checker
Trace your domain's HTTP and HTTPS redirect chains, inspect status codes and identify the final destination.
WebsiteHTTP status checker
Check your domain's final HTTP status, current availability, final URL and response-header timing.