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North Pittsburgh Systems, Inc. (North Pittsburgh) is a holding company. Its subsidiaries include North Pittsburgh Telephone Company (NPTC), Penn Telecom, Inc. (PTI) and Pinnatech, Inc. (Pinnatech). NPTC is a telephone public utility. PTI was certificated
United Communications is a Langdon, ND-based company in the Telecommunications sector.
Marksal is a Mississauga, ON-based company in the Telecommunications sector.
Colony Woods is a Kansas City, MO-based company in the Telecommunications sector.
American Digital Online Services is a Saint Helens, OR-based company in the Telecommunications sector.