About Quantum

Quantum Internet and Telephone (Qis.net) is a locally owned and operated Internet and telephone service provider based in Manchester, MD. Quantum has seen rapid growth since its establishment in 1995 and is currently one of the Baltimore area's largest independent Internet and telephone service providers.

Quantum serves both commercial and residential customers by providing high-speed Internet and data services including DSL, T-1, T-3 and fiber circuits, as well as web hosting and co-location services.

In addition to Internet access, Quantum also offers residential and business telephone service that provides a large local calling area, low long distance rates, and unlimited local and "in-network" calling, all for one low flat rate. Quantum's telephone plans also provide a host of calling features at no extra charge, 12 standard calling features in all.

Most recently, Quantum began offering Managed Voice and fiber-optic Internet service for businesses. Managed Voice is a next-generation, scalable phone system hosted within Quantum's datacenter. It enables businesses to obtain a modern phone system with little up-front cost. Quantum's new fiber-optic Internet service is now available to businesses throughout the Baltimore area (as well as Carroll County). Bandwidth starts at speeds as low as 10 Mbps, and can scale to a blistering 1 Gbps.

Later this year, Quantum will complete a new round of expansion, beginning first with its Westminster network, which will be enlarged for the third time to accommodate increased demand for its services. Soon thereafter, Quantum plans to expand its services into new areas throughout the Baltimore region. These increases in footprint will more than double the addressable market for Quantum's services.




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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.

┬ęCopyright 1995-2021 Quantum Internet Services, Inc., ┬ęCopyright 1995-2021 Quantum Telecommunications, Inc. All Rights Reserved.