rdap ☆
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Description:
Command-line client for the Registration Data Access Protocol
Type: Formula  |  Tracked Since: Dec 28, 2025
Links: Homepage  |  formulae.brew.sh
Category: Networking
Tags: rdap whois networking cli domains dns
Install: brew install rdap
About:
RDAP is the modern successor to WHOIS, providing standardized access to domain registration data via RESTful APIs. This command-line client allows users to query domain registries and registrars to retrieve ownership and contact information in a structured JSON format. It offers improved privacy compliance and consistent data presentation across different domain authorities.
Key Features:
  • Supports both RDAP and legacy WHOIS protocols
  • Structured JSON output for easy parsing
  • Automatic discovery of registry servers via bootstrap
  • Handles domain, IP address, and ASN queries
Use Cases:
  • Investigating domain ownership and registration details
  • Network security research and threat intelligence gathering
  • Verifying IP address allocation and ASN information
Alternatives:
  • whois – Traditional WHOIS client that uses legacy protocol with unstructured text output
  • curl – Generic HTTP client that can query RDAP endpoints but lacks protocol-specific features
Version History
Detected Version Rev Change Commit
Oct 9, 2025 8:07pm 0 VERSION_BUMP e8124e6b
Sep 15, 2025 9:32pm 0 VERSION_BUMP feef3dd8
Sep 14, 2024 1:21am 0 VERSION_BUMP a2d4ae03
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