I don't think you know exactly what you are asking, why are you trying to find a phone number with a DOS window?
out of curiousity
What gave you the idea that you can try to do that even? It's almost as random as asking if you can power a car with a stick of gum and cat hair. I guess if you had a list of phone numbers in a file somewhere, you can use a cmd window and some commands to read a string out of that file.
I don't think you know exactly what you are asking, why are you trying to find a phone number with a DOS window?
out of curiousity
What gave you the idea that you can try to do that even? It's almost as random as asking if you can power a car with a stick of gum and cat hair. I guess if you had a list of phone numbers in a file somewhere, you can use a cmd window and some commands to read a string out of that file.