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 ResourcesProof of InsuranceHow can I become an approved vendor? All contractors must be approved to perform work for American Tower sites. To request information on becoming an approved contractor, e-mail us or call 678-265-6753.Outside CounselAmerican Tower discovery protocols, checklists and guidelines.