NSEC(3) TTLs and NSEC Aggressive Use

Document Type Replaced Internet-Draft (dnsop WG)
Author Peter van Dijk 
Last updated 2021-01-06 (latest revision 2020-11-23)
Replaced by draft-ietf-dnsop-nsec-ttl
Stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Expired & archived
pdf htmlized (tools) htmlized bibtex
Stream WG state Adopted by a WG
Document shepherd No shepherd assigned
IESG IESG state Replaced by draft-ietf-dnsop-nsec-ttl
Consensus Boilerplate Unknown
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Due to a combination of unfortunate wording in earlier documents, aggressive use of NSEC(3) records may deny names far beyond the intended lifetime of a denial. This document changes the definition of the NSEC(3) TTL to correct that situation.


Peter van Dijk (peter.van.dijk@powerdns.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)