Hi… Possibly I’m taking your example too literally, but app names are a global namespace—shared amongst all of Fly.io’s customers. Anyone else could have tried that same sequence, too, .
I do see AAAA records for both of those:
$ fly dig log-shipper.fly.dev
log-shipper.fly.dev. 300 IN AAAA 2a09:8280:1::3:138d
$ fly dig logs-shipper.fly.dev
logs-shipper.fly.dev. 300 IN AAAA 2a09:8280:1::42:522e
People have asked in the past for reserved prefixes and so on, but it’s still on the wishlist so far…
$ fly dig orange-hat-dog-logs-shipper.fly.dev
;; opcode: QUERY, status: NXDOMAIN, id: 15506
That one is free, at least, but act quickly!