RFC 2255 · PROPOSED STANDARD · 1997
MON · 14 SEP 2026
The LDAP URL Format
Overview
RFC 2255, “The LDAP URL Format”, is a Proposed Standard document published in December 1997 by T. Howes, M. Smith. It obsoletes RFC 1959. It has since been updated by RFC 3377. It has been obsoleted by RFC 4510, RFC 4516 — refer to the newer document for the authoritative version. The canonical text is published by the RFC Editor.
Abstract
This document describes a format for an LDAP Uniform Resource Locator. [STANDARDS-TRACK]
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
Read this RFC
The canonical text of RFC 2255 is hosted at rfc-editor.org. Available in TXT,HTML.
Relationships to other RFCs
Other RFCs from 1997
- RFC 2254 The String Representation of LDAP Search Filters
- RFC 2256 A Summary of the X.500 User Schema for use with LDAPv3
- RFC 2253 Lightweight Directory Access Protocol : UTF-8 String Representation of Distinguished Names
- RFC 2252 Lightweight Directory Access Protocol : Attribute Syntax Definitions
- RFC 2251 Lightweight Directory Access Protocol
- RFC 2245 Anonymous SASL Mechanism
- RFC 2244 ACAP -- Application Configuration Access Protocol
- RFC 2243 OTP Extended Responses