I saw your account earlier had rot13maxi@nip05.rot13maxi.com as the NIP-05 ID. If you don't want your rot13maxi username to show, you need to set it up on your domain in your JSON file as an underscore. Then use _@nip05.rot13maxi.com as your NIP-05 ID when you register it.
Discussion
Yep! Thats what I’ve got setup now. I just saw a bunch of folks with @nostrpleb.com nip05 IDs with no username listed (via astral.ninja). I am trying to figure out if thats an astral.ninja quirk or if theres some clever way to have a not-_ username but have it look like that.