Domain tools
Understand domain and DNS configuration.
DNS Toolkit
Look up A, AAAA, CNAME, MX, TXT, NS, CAA, and SOA records with available TTLs.
DNS Propagation Checker
Compare Cloudflare and Google Public DNS observations. Resolver disagreement can reflect normal caching.
SPF Checker
Inspect SPF policies, syntax, include recursion, and DNS lookup limits without sending email.
DKIM Checker
Inspect one known DKIM selector. Find it in your provider settings or a message’s DKIM-Signature header.
DMARC Checker
Inspect public DMARC policy, alignment, reporting tags, and percentage settings.
Domain Health
Combine DNS, HTTPS, certificate, mail policy, and registration observations with explicit coverage.
RDAP / WHOIS Lookup
Retrieve available authoritative RDAP registration data while excluding personal registrant information.
Technology Detector
Identify possible technologies from passive page and header evidence, with confidence labels.