Coredns

Collaborative Infrastructure as Design: Collaboratively manage infrastructure with your coworkers synchronously sharing the same designs.

Key Features

Serves zone data from a file; both DNSSEC (NSEC only) and DNS are supported (file and auto).
Retrieves zone data from primaries, i.e., act as a secondary server (AXFR only) (secondary).
Signs zone data on-the-fly (dnssec).