NSEC
Quick facts
Purpose
NSEC
NSEC is one of the DNS resource record (RR) types defined by RFC 4034, RFC 9077.
Example
example.com. 3600 IN NSEC next.example.com. A AAAA RRSIG NSEC
Related record types
Common uses
Frequently asked questions
Prove non-existence of names, DNSSEC denial of existence
In the DNS management panel of your registrar or DNS provider (for example Cloudflare or Route53).
Sources & standards
Updated 2026-09-13
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