A further option if you want to never see this client in your Pi-Hole and you are using the DHCP server in your Pi-Hole - exclude that client from Pi-Hole and give that client a third party DNS address.
A further option if you want to never see this client in your Pi-Hole and you are using the DHCP server in your Pi-Hole - exclude that client from Pi-Hole and give that client a third party DNS address.