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WHOIS, RDAP, and Domain Privacy — Reading Registration Data

Complete beginner guide to legacy WHOIS vs modern RDAP (RESTful JSON), querying via curl and jq, GDPR redaction rules, and WHOIS privacy.

curl — Command Line HTTP Client & API Debugger

Complete beginner guide to curl, testing REST APIs, inspecting HTTP response headers, verifying SSL/TLS certificates, and debugging response timing with command flag breakdowns.