Certainly your agent can give you some help with this, or if you don't have an agent of your own, ask the listing agent.
With all those homes in that area, I have to think somebody is supplying cable, TV, and internet. Utility company employees here do have something of a reputation for telling you you don't really live where you thnk you live. I have to tell you that I have had more trouble with the electric companies than cable and phone companies though.
You might want to check with the post office to be sure that the address is Etters, not listed under Yocumtown.