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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
Zayo Enterprise Networks is a Louisville, CO-based company in the Telecommunications sector.
Optimization Technology is a Huntsville, AL-based company in the Telecommunications sector.
Mountain Telephone Co is a West Liberty, KY-based company in the Telecommunications sector.
Public Mobile Inc is a Toronto, ON-based company in the Telecommunications sector.