NSEC3
Quick facts
Purpose
NSEC3
NSEC3 is one of the DNS resource record (RR) types defined by RFC 5155, RFC 9077.
Example
example.com. 3600 IN NSEC3 1 1 12 AABBCCDD 2T7B4G4VSA5SMI47K61MV5BV1A22DSJR A RRSIG
Related record types
Frequently asked questions
Used for DNS resolution and zone configuration.
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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