• Telecom Inc
  965 Mission St # 110
• Parnassus Heights Exchange
  350 Parnassus Ave # 304a
• Novalert Critical Info Center
  345 California St
• Doctors' Exchange
  387 Ivy St
• Direct Line Tele Response
  
• Cotton Communications
  
• Connections Communication Svc
  387 Ivy St
• Business Message Center
  8038 Geary Blvd
• Bay Area Answering Svc
  
• Answerite
  
• Answer Mti
  
• Adelson's Voice Mail & Mail
  760 Market St # 315
• Action Answering Svc
  
• A Automatic Answer
  
• A Answering Royal Connection
  440 Potrero Ave
• A Answer America