The PowerDNS Authoritative Server is the only solution that enables
authoritative DNS service from all major databases, including but not limited
to MySQL, PostgreSQL, SQLite3, LDAP and plain text files.

DNS answers can also be fully scripted using a variety of (scripting) languages
such as Lua, Java, Perl, Python, Ruby, C and C++. Such scripting can be used
for dynamic redirection, (spam) filtering or real time intervention.

In addition, the PowerDNS Authoritative Server is the leading DNSSEC
implementation, hosting the majority of all DNSSEC domains worldwide. The
Authoritative Server hosts at least 30% of all domain names in Europe, and
around 90% of all DNSSEC domains in Europe.

 * IPv4, UDP/TCP
 * IPv6, UDP/TCP, 100% compliant
 * Remotely pollable statistics for real time graphing
 * MySQL, PostgreSQL, Oracle, Sybase, Microsoft SQL Server, LDAP, SQLite3
   - Including replication
 * Near instant start up time
 * Plain BIND zone files
   - Brief start up time
 * Migration tools from legacy DNS platforms (zone2sql)
 * Internal Lua-based scripted answer generation
 * External high-performance Script-based answer generation
 * Geographical load balancing
 * Full DNSSEC support including all standardized algorithms
 * TSIG for transaction signatures, AXFR authorization/requests
 * Master/Slave support
 * Built-in web server for statistics and limited direct control
 * API for direct control (pdns_control, pdnssec)
   - Local and remote access

WWW: https://www.powerdns.com/auth.html