Tool Area
About this tool
WHOIS and RDAP (Registration Data Access Protocol) represent standard web lookup directories containing domain name metrics, ownership dates, and active DNS configurations.
RDAP Serialization Metrics
RDAP (defined in RFC 7480 specifications) replaced older plain-text WHOIS port 43 requests with structured JSON query structures. This browser tool serializes domain values and runs requests securely client-side to check nameserver configurations.