ELI5 : why do some phone numbers require a 1 or 0 before the area code?


Especially when I’m calling customers at work, I often hear an intercept message saying something along the lines of, “this local call now requires an area code of a 1 or 0 before the 10 digit number…hang up and try again.” I sometimes get the message even if I’m calling someone with the same area code as my own phone number. Why does this happen?


Anonymous 0 Comments

That is so that you can dial long distance. Theoretically any phone number that doesn’t have your same area code requires a 1 or 0 so that the servers can flag the call as long distance.