This is Norfolk Southern Railroad out of Atlanta GA..... my wife works there, and she calls me on a land line when her cell phone is dead.... :)

I am a Norfolk Southern employee.  Many employees are on call 24/7.  This number is the crew caller who apparently has called the wrong number if they have called you.  They call the train crews 2 hours before they have to report to work so the calls can come any time during the day or night.   If I did my job as poorly as they do theirs I would be fired.

This one called at 12:08 AM on July 15 at my home in northern VA - a very long way from Atlanta. The caller ID said Norfolk Southern. The crew caller is way off.