Without having to log into every email account on a domain, Is there a way to tell what email account a calendar is shared from ?

 

We got a weird situation. We have a domain (KWO) that has a shared calendar called "agency wide calendar." A bunch of email accounts have it mapped and can interact with it full access. No one knows who the calendar actually belongs to. When looking at the calendar in the user settings under mapped resources, the calendars "username" is "(resource)" 

Is it possible the calendar is somehow free floating and not attached to an email account ?