Thanks, I googled and found this information about importing in bulk:
https://www.oreilly.com/library/view/pfsense-2x-cookbook/9781789806427/dc8a8f0a-60b7-4ff0-8d87-a96c2a3adaa5.xhtml
I have pfSense running at home with DNS forwarding enabled.
This will forward all DNS requests to my Adguard...