RFC 9977: Publishing End-Site Prefix Lengths
RFC 9977
Title: Publishing End-Site Prefix Lengths
Author: O. Gasser,
R. Bush,
M. Candela,
R. Housley
Status: Proposed Standard
Stream: IETF
Date: May 2026
Mailbox: oliver@ipinfo.io,
randy@psg.com,
massimo@ntt.net,
housley@vigilsec.com
Pages: 26
I-D Tag: draft-ietf-opsawg-prefix-lengths-14.txt
URL: https://www.rfc-editor.org/info/rfc9977
DOI: 10.17487/RFC9977
This document specifies how to augment the Routing Policy Specification Language (RPSL) inetnum: class to refer specifically to prefixlen files, which are Comma-Separated Values (CSV) files used to specify end-site prefix lengths. This document also describes an optional mechanism that uses the Resource Public Key Infrastructure (RPKI) to authenticate the prefixlen files.