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FIRS (Federated Internet Registry Service) is a distributed service for storing, locating and transferring information about Internet resources using LDAPv3.[1]

FIRS is intended to provide a distributed Whois-like information service, using the LDAPv3 specifications for the data-formatting and query-transport functions.

FIRS has a collection of specifications which define the following service elements: Namespace Rules, Schema Definitions, Query-Processing Rules.


The original WHOIS service was intended to be a centralized repository of ARPANET resources and users. Eventually, many Whois resources sprung-up all over the world, only providing information about particular network resources under the control of a specific organization.

There was not a strict set of data-typing or formatting requirements. This resulted in different implementations providing different kinds of information. There were also problems with privacy and security.

Thus, FIRS was bourn out of a need for specifications that cumulatively define a structured and distributed information service, including an extensible framework and resource-specific definitions.

The Cross Registry Internet Service Protocol (CRISP) working group of the IETF is responsible for development of FIRS.

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