RDAP vs WHOIS: Why Registration Data Access Protocol is Replacing WHOIS
Compare RDAP and port 43 WHOIS protocol, focusing on RESTful JSON output, standard HTTP queries, and granular access controls.
Modernizing Domain Lookups with RDAP
RDAP provides machine-readable JSON data over HTTP/HTTPS, replacing legacy plain-text port 43 WHOIS queries with standardized auth and localization.