RFC 9977: Publishing End-Site Prefix Lengths
In plain English — editorial summary, not part of the RFC
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.
Document record
- Document ID
- RFC9977
- Published
- May 2026
- Authors
- O. Gasser; R. Bush; M. Candela; R. Housley
- Status
- PROPOSED STANDARD
- Stream
- IETF
- Area
- ops
- Pages
- 26
- Also known as
- —
Topics
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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.
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