2.0.0.0/16 and 2.2.0.0/16 are owned by Orange, a European company. I'm sure they'd be willing to lease 2.2.2.0/24 and 2.0.0.0/24 for a nominal fee
5.4.0.0/14 (so 5.5.5.5) is Telefonica Germany. Same thing there.
Mercedes owns 53.0.0.0/8 which feels like a nice number for DNS too.