DNS records, WHOIS/RDAP registration, SSL certificate, subdomain enumeration, and email-security posture — aggregated in real time and cached.
All record types resolved from authoritative DNS for notion.so.
Registration data for notion.so via the RDAP protocol, with port-43 WHOIS fallback if RDAP is unavailable.
Live TLS handshake against notion.so. No third-party scanner.
Aggregated from Certificate Transparency logs (crt.sh, certspotter, hackertarget) with DNS bruteforce fallback if all CT sources fail.
SPF and DMARC presence and records for notion.so. DKIM requires a known selector and is not auto-discoverable.
DKIM requires selector; not auto-discoverable
Same data, JSON response, REST API. Free tier available, no card required.
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