About Quantum

Quantum Internet and Telephone is a local family owned and operated Internet and telephone service provider based in Manchester, MD. Quantum was established in 1995, and is currently one of the Baltimore metro area's largest independent Internet and telephone service providers.

Quantum serves both commercial and residential customers by providing high-speed Internet, telephone, and data services over point to point dedicated gigabit fiber and wireless 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 12 standard calling features at no extra charge.

Quantum also provides Cloud Calling Services that includes Voice Over Internet Protocol (VoIP), and fiber-optic Internet service for businesses. Cloud Calling Service includes a next-generation, scaleable phone system hosted within Quantum's data centers. It enables businesses to obtain a modern phone system with little up-front cost. Quantum's fiber-optic Internet service is now available to businesses throughout the Baltimore metro area including Carroll County. Bandwidth speeds start at 10 Mbps, and scale to a blistering 10 Gbps.

Quantum is in a constant state of expansion, and is always looking for opportunities to provide services to business parks, multi-tenant buildings, including small and large businesses, and residential areas. For those businesses that require secure and redundant fiber networks, Quantum offers Enterprise grade services that provide quality of service (QOS) guarantees.


Quantum provides service in Carroll County and the Baltimore metro area!


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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.


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