RFC 8501 · INFORMATIONAL · 2018
SUN · 14 JUN 2026
Reverse DNS in IPv6 for Internet Service Providers
Overview
RFC 8501, “Reverse DNS in IPv6 for Internet Service Providers”, is an Informational document published in November 2018 by L. Howard. The canonical text is published by the RFC Editor.
Abstract
In IPv4, Internet Service Providers (ISPs) commonly provide IN-ADDR.ARPA information for their customers by prepopulating the zone with one PTR record for every available address. This practice does not scale in IPv6. This document analyzes different approaches and considerations for ISPs in managing the IP6.ARPA zone.
What “Informational” means
Published for the general information of the community. It does not define an IETF standard and carries no standards-track status.
Read this RFC
The canonical text of RFC 8501 is hosted at rfc-editor.org. Available in TXT,HTML.
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