About WHOIS & RDAP Lookup
A WHOIS lookup is a query and response protocol used for searching databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block, or an autonomous system. It provides critical information about ownership and delegation.
Evolution to RDAP
RDAP (Registration Data Access Protocol) is the modern replacement for the traditional WHOIS protocol. Unlike WHOIS, which returns unstructured text, RDAP provides responses in a machine-readable JSON format, allowing for better structured data and secure access control.
Information Privacy
With the introduction of GDPR and similar privacy regulations, many registrars now redact personal contact information from public records. A domain owner check often reveals the organization and technical contact handles rather than private individual details.