Named.conf
From: https://www.zytrax.com/books/dns/apa/conf.html
BIND: named.conf file
BIND operational functionality is controlled by a file called named.conf
normally /etc/named.conf (Linux) or /etc/namedb/named.conf (BSD's).
The named.conf file declares both global properties for BIND and the zones
for which the configuration is a slave or master. Each zone referenced
requires a zone file. By default zone files are located in /var/named but
this can be changed using the 'directory' parameter in named.conf.