1. G S Communications Inc 8101 Crum Rd, Walkersville, MD 21793 Coordinate: 39.45557,-77.33066 Phone: (301) 898-8463
2. Comserve Wireless 138 Walkers Village Way, Walkersville, MD 21793 Coordinate: 39.48501,-77.34114 Phone: (301) 304-5872