You can use below command on a subscriber box to check the subscriber scale, This command displays number of subscribers supported for the installed license. You can also refer below KB for more details.
From residential access statisticts...There are so much docs to have a look at but I want to ask to clarification as I am confused...How can be double verified or double cross check to see active total number is correct?
show subscribers summary
Subscribers by State
Subscribers by Client Type