Network
Look up a domain’s registration status, key dates, and nameservers via RDAP.
Processed on the server, not storedUses RDAP, the modern replacement for WHOIS, via a fixed public bootstrap service. Results depend on what the domain’s registry publishes; some registries redact registrant details for privacy.
The name is validated, then our server queries RDAP for it.
RDAP is the structured replacement for classic WHOIS. A public bootstrap service points the query at whichever registry actually holds the record.
Status, key dates and nameservers come back as the registry publishes them.
Look up A, AAAA, MX, TXT, NS, and CNAME records for a domain.
Open toolRead a PEM/DER X.509 certificate’s subject, issuer, validity, and public key details.
Open toolFetch a URL and check which HTTP security headers it sends, and which are missing or weak.
Open tool