Support Services - Contact Us

By Email

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

By Phone

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

By Mail

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

Tech Support Hours

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

Sales Centers

DMH Computers

Open Monday through Friday 8:30-5:00
Phone: (443) 507-0709
Located at 1005 S. Main Street, Hampstead, MD

Use of Quantum's services, systems, servers, and facilities, constitutes the customer's agreement with Quantum's Rules and Regulations, and the Quantum Service Agreement, both of which are subject to change without notice.