Question extension or tool to dig/ping and know wich "domains" are really pointing to local plesk?

[Hosting4Agency]

Server operating system version

Debian 11

Plesk version and microupdate number

current

Hi,

as subject, I need to find an easy way to find:
wich "domains" / subscriptions
are really pointing to the local plesk,
so I can Suspend / Terminate the already migrated ones.

Thank you!