Customer site number shows in account contact tab

Dear experts:

Background: (1) One account can has more than one site. (2) in communication tab in customer account level, we cannot see any column to indicate the contact related to which site. (3) site contact will sync to account level

Issue: in account level, when there are many contacts synced from site level, client is not able to identify contact information is from which site

Therefore,

How to indicate the site number in customer account contact tab and indicate contact information is from which site