1. Granite Telecomm 1133 Annapolis Rd, Odenton, MD 21113 Coordinate: 39.08137,-76.6891 Phone: (410) 674-8338
2. Granite Communications Md 1682 Annapolis Rd, Odenton, MD 21113 Coordinate: 39.10882,-76.7233 Phone: (410) 551-9184