Vendor Relations An integral part of American Tower achieving success is working closely with the right partners across our industry. We evaluate each opportunity thoroughly to ensure that we are well positioned to continually exceed our customers’ expectations and deliver on their needs.Vendor ResourcesATC Proof of InsuranceDirect Deposit Enrollment FormContractor RequirementsAll contractors must be approved to perform work for American Tower sites. For further information contact vendor.compliance@americantower.com.Outside CounselAmerican Tower discovery protocols, checklists and guidelines.