PocketHost instances can always be accessed by their permalink, such as https://mfsicdp6ia1zpiu.pockethost.io, but they can also be accessed by convenient subdomain such as https://harvest.pockethost.io.

The subdomain name is unique across all of PocketHost, but you can change it. When you change it, you relinquish the old name and someone else can grab it if they want it. So be careful.