Deep Whois

Registration Data Access Protocol
(RDAP)

The Registration Data Access Protocol (RDAP) is the modern replacement for the traditional Whois protocol, designed to provide more structured and secure access to domain registration data.

Unlike Whois, RDAP supports internationalization, standardized responses, and secure access to registration data, including differentiated access levels and data redaction, enhancing both privacy and functionality.

Deep Whois fully embraces RDAP across all platforms, including iOS, web, and Terminal on macOS, Linux, and FreeBSD. As more domain zones transition to RDAP, Deep Whois ensures that users have seamless access to this evolving standard.

For domain zones that have adopted or migrated to RDAP (such as .CH), Deep Whois automatically connects to the appropriate RDAP servers, fetching the latest and most accurate registration data.

This process is completely transparent to the user, making RDAP queries as straightforward as traditional Whois lookups.

In addition to automatic RDAP handling, Deep Whois offers advanced users the option to perform a forced RDAP query using the ’-f @rdap’ command along with an RDAP link. This feature is particularly useful when dealing with complex domain investigations or when you want to ensure that the data comes directly from an RDAP server.

deep-whois -f @rdap https://rdap.registro.br/domain/google.com.br

This forced query functionality is available on both iOS and Terminal clients, providing consistent and flexible access to RDAP data.

Moreover, Deep Whois’s RDAP support is enhanced by its ability to handle RDAP-specific features, such as handling JSON responses, which are more structured and detailed compared to the plain text responses of Whois. This means that users can access detailed domain data, including status codes, internationalized domain names (IDNs), and differentiated access control information, all through a simple and user-friendly interface.

Deep Whois ensures that as the internet's domain infrastructure evolves, you stay ahead with robust, secure, and comprehensive access to domain registration data through RDAP, whether you're on the go with iOS, working from your desktop, or using a Terminal client.