DNS

Delegation

A parent zone pointing at the nameservers for a child zone, using NS records. The parent’s NS set is what resolvers follow; the child publishes its own copy, and the two are supposed to agree.

Defined in RFC 1034 §4.2.2.

Where this appears

The lessons that use this term, and what each is for.

Domain Security FundamentalsZones, delegation and glueFind the two places a domain’s NS records live and say what happens when they disagree.DNS Security PractitionerOne provider is one outageQuantify what a single authoritative provider means for every service you run.