I have Fios phone service in VA. When I called my brother in Florida I dialed the area code and number. I got an answering machine so I left a message. The person called back and said I had a wrong number. I called Verizon and was told I needed to dial a 1 before the area code. I did this and got the right number. I called my daughter in Maryland using the 1, area code, and number and got a wrong number. I called Verizon and they said it depends on the service that the person you are calling has as to when to use the 1 before the area code. My question is how do you know what service the party you are calling has. Any help?