The PowerDNS nameserver is a modern, advanced and high performance authoritative-only nameserver. It is written from scratch and conforms to all the relevant DNS standards documents. PowerDNS is open source. The PowerDNS nameserver utilizes a flexible backend architecture that can access DNS information from any data source. This includes file formats, Bind zone files, relational databases or LDAP directories. See the net/powerdns-* packages for additional backend modules.