By Email

• Sales (sales@qis.net)
• Billing (office@qis.net)
• Support (help@qis.net)

• In Maryland: 410-239-6920
• Toll-free: 888-889-4-NET
• Fax: 410-239-0820

Quantum Internet Services, Inc.
2975B Manchester Road
Manchester, MD 21102

• 9:00am - 9:00pm Monday - Friday
• 10:00am - 5:00pm Saturday
• 12:00pm - 5:00pm Sunday

Sales Centers

• A&E Techs/Computer Repair Associates
  • Open Monday through Thursday 9-5, Friday 10-7
  • Phone: (410) 374-0051
  • Located at 1005 S. Main Street, Hampstead, MD
  
  
• Canyon Oak Technologies, LLC
  • Phone: (443) 507-5667
  • P.O. Box 406, Hampstead, Maryland 21074
  
  
• CC Computer Systems
  • Phone: (443) 507-0007
  • 3321 Main St., Suite B3, Manchester 21102
  
  
• CMC Computers
  • Phone: (410) 871-4262
  • 1 S. Center St., Suite 102, Westminster 21157
  
  
• NoWorriesIT (formerly docuMacs Technology Consultants)
  • Phone: (410) 751-7650
  • 57 Aileron Court, Suite 14, Westminster 21157