Atlantic Broadband, a wholly-owned subsidiary of Cogeco Cable Inc. (TSX: CCA), is the 8th largest cable operator in the Unite ... d States. The company provides TV, Internet, Phone and enterprise business services to more than 450,000 business and residential customers located in eleven states: Connecticut, Delaware, Florida, Pennsylvania, Maine, Maryland, New Hampshire, New York, South Carolina, Virginia, and West Virginia. Atlantic Broadband is headquartered in Quincy, MA. read more