Call Before You Dig (It’s the Law!) Simply dial 8-1-1, or call 800.344.8377. Take advantage of our free cable location service before you begin any excavation or digging project. You’ll prevent possible damage to underground lines and avoid costly repairs. Plus, it’s safer for you and better for the environment. Call at least two working days (48 hours) before you dig – it’s the law. Remember, just dial 8-1-1.