RFC 8499 · BEST CURRENT PRACTICE · 2019

DNS Terminology

Overview

RFC 8499, “DNS Terminology”, is a Best Current Practice document published in January 2019 by P. Hoffman, A. Sullivan, K. Fujiwara. It updates RFC 2308. It obsoletes RFC 7719. It has been obsoleted by RFC 9499 — refer to the newer document for the authoritative version. The canonical text is published by the RFC Editor.

Abstract

The Domain Name System (DNS) is defined in literally dozens of different RFCs. The terminology used by implementers and developers of DNS protocols, and by operators of DNS systems, has sometimes changed in the decades since the DNS was first defined. This document gives current definitions for many of the terms used in the DNS in a single document.

This document obsoletes RFC 7719 and updates RFC 2308.

Abstract as published in the RFC, via rfc-editor.org.

What “Best Current Practice” means

Documents the IETF community's recommended operational or procedural practice rather than a protocol specification.

Read this RFC

The canonical text of RFC 8499 is hosted at rfc-editor.org. Available in TXT,HTML.

Relationships to other RFCs
This RFC obsoletes
RFC 7719
Obsoleted by
RFC 9499
This RFC updates
RFC 2308
Other RFCs from 2019

Who Is Online

In total there are 72 users online: 0 registered, 64 guests and 8 bots.

Most users ever online was 5,555 on 17 Jul 2026, 3:23 am.

Bots: AhrefsBot Applebot Baiduspider Bingbot Googlebot Other Bot PetalBot SemrushBot

Users active in the past 15 minutes. Total registered members: 372