db.example.lan

$TTL    604800
$ORIGIN example.lan.
@       IN      SOA     ns.example.lan. admin.example.lan. (
                        2024072301 ; Serial
                        604800     ; Refresh
                        86400      ; Retry
                        2419200    ; Expire
                        604800 )   ; Negative Cache TTL
;

@       IN      NS      ns.example.lan.
ns      IN      A       192.168.1.1
@       IN      A       192.168.1.1