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RFC 3403: Dynamic Delegation Discovery System (DDDS) Part Three: The Domain Name System (DNS) Database

In plain English — editorial summary, not part of the RFC

This document describes a Dynamic Delegation Discovery System (DDDS) Database using the Domain Name System (DNS) as a distributed database of Rules. The Keys are domain-names and the Rules are encoded using the Naming Authority Pointer (NAPTR) Resource Record (RR). Since this document obsoletes RFC 2915, it is the official specification for the NAPTR DNS Resource Record. It is also part of a series that is completely specified in "Dynamic Delegation Discovery System (DDDS) Part One: The Comprehensive DDDS" (RFC 3401). It is very important to note that it is impossible to read and understand any document in this series without reading the others. [STANDARDS-TRACK]

Document record

Document ID: RFC3403
Published: October 2002
Authors: M. Mealling
Status: PROPOSED STANDARD
Stream: IETF
Area: app
Pages: 14
Also known as: —

Obsoletes:: RFC 2168, RFC 2915

Topics

Standards lineage

This document is one revision in a chain of 6 RFCs, each formally replacing the one before it.

Read the full history of Dynamic Delegation Discovery System (DDDS) Part Four: The Uniform Resource Identifiers (URI) →

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The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.

Last checked against the RFC Editor index on 23 August 2026. RFCs are never revised after publication; changes are issued as new documents.

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