I been lazy and was using Cloudflare's resolver only recently. In hindsight I probably should just setup two instances of Unbound on my home network that don't rely on upstream resolvers and call it a day. It's unlikely both will go down at the same time and if I'm having an total Internet outage (unlikely as I have Comcast as primary + T-Mobile Home Internet as a backup), it doesn't matter if DNS is or isn't resolving.