If you install nostr:npub10efcj7x65z2ak6vd69xr8f2hvqwuaqrhlygl3yqa4y63hfvc02mqwzaeh3 you can have your own node on your own domain with your own NIP-05 and run your own relay.
They just launched V1 I believe.
They also run PoS merchant services and a ton of other features.
This is my next project.