Registration Data Access Protocol

Three, investigate the domain registration history.

A foundational OSINT technique is examining a domain's registration information using WHOIS or RDAP lookup services.

For example, domains can be investigated through Registro.br, while domains can be researched using ICANN-related domain lookup tools.

If a website claims an auction house has operated for twenty years but its domain was registered three weeks ago, that discrepancy is a major warning sign.