A new Request for Comments is now available in online RFC libraries.
RFC 9824
Title: Compact Denial of Existence in DNSSEC
Author: S. Huque,
C. Elmerot,
O. Gudmundsson
Status: Standards Track
Stream: IETF
Date: September 2025
Mailbox: [email protected],
[email protected],
[email protected]
Pages: 14
Updates: RFC 4034, RFC 4035
I-D Tag: draft-ietf-dnsop-compact-denial-of-existence-07.txt
URL: https://www.rfc-editor.org/info/rfc9824
DOI: 10.17487/RFC9824
This document describes a technique to generate a signed DNS response
on demand for a nonexistent name by claiming that the name exists but
doesn't have any data for the queried record type. Such responses
require only one minimally covering NSEC or NSEC3 record, allow
online signing servers to minimize signing operations and response
sizes, and prevent zone content disclosure.
This document updates RFCs 4034 and 4035.
This document is a product of the Domain Name System Operations Working Group
of the IETF.
This is now a Proposed Standard.
STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements. Please refer to the current edition of the Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the
standardization state and status of this protocol. Distribution of this
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