Possible to release auth subdomain from deleted account?

Is there any official way to petition for the release of an auth domain from a previously deleted account? I mistakenly deleted a Heroku app that was associated with the auth subdomain I would like to use. Is the name really gone forever, or is there a way to get it back?

It is possible under some situations, in particular, check the tenant restoration policy which would include also request to restore the ability to have a specific tenant name.