Number Assigned to Auto-Receptionist.....where?

Good day RC people! 
I have a number that I’m trying to track down in our system. It’s currently connected to an Auto-Receptionist. But, I don’t know which one or how to see a list of the numbers connected to this auto-receptionist. 

Pretty sure it’s connected to the main IVR we use with our company number but I can’t find anything in the site or IVR settings. 

(fwiw this is something I miss from Cisco UCS….a tool that let you see everywhere a number or extension appears or is used. And device IP addresses, that was really useful)