Registration Data Access Protocol gTLD Profile
On 17 May 2018 the ICANN Board adopted a Temporary Specification for gTLD Registration Data. This page is under review and will be updated to address the Temporary Specification.
The Registration Data Access Protocol (RDAP) gTLD Profile maps policy and contractual requirements for gTLD registries and registrars to technical features in the Registration Data Access Protocol. This new protocol was created as a replacement for the WHOIS protocol. Its advantages over the older protocol include:
- Standardized query, response and error messages.
- Secure access to data (i.e., over HTTPS).
- Extensibility (e.g., makes it easy to add output elements).
- A bootstrapping mechanism that makes it easy to find the authoritative server for a given query.
- Standardized redirection/reference mechanism (e.g., from a thin registry to a registrar).
- Builds on top of the well-known web protocol HTTP.
- Internationalization support for registration data.
- Provides the option to enable differentiated access (e.g., limited access for anonymous users and full access for authenticated users).
- Version 1.0 – 26 July 2016
- 1982 – The Internet Engineering Task Force (IETF) issued a protocol for a directory service for ARPANET users. This protocol has been in use ever since; it is referred to as WHOIS.
- 2010 – The ICANN community holds discussions about the need for technical evolution of the WHOIS Service.
- 2011 –
- 2012 –
- 2015 –
- 2016 – On 26 July, ICANN published version 1.0 of the profile.