Is there a way to mass import a list of my current MAC addresses into the Inlude Addresses tab of the Global Preferences window in DNS/DHCP?

I've been having a problem with some users brining in personal laptops and connecting them on my network. Since I have a list of all of my owned MAC addresses, I would like to put them into the includes tab so they will be the only computers to get IP's. That way I don't have to worry about someone bringing in their personal laptop and getting an IP on my network.

I know I can type each address in individually, but I have about 1250, so it would be much easier to either mass import them or write them to a txt file that DNS/DHCP pulls from.