trouble receiving sms and phone calls when someone dials a 1 before the area code.

I have been trying to verify my phone number through a sms but can't receive it because they are dialing a one before the area code.I have this same problem when trying to get phone calls from a landline. Is there some way to fix this or add the one to my phone number?

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Re: trouble receiving sms and phone calls when someone dials a 1 before the area code.
Specialist - Level 2

I specialize in technical support as well as international. I work with phones everyday. I have extensive knowledge of the inner workings with phones and how the numbers work.

A phone number is constructed of 3 parts. There is the NPA (Numbing Plan Area [area code]), there is the NXX which identifies the Central Area within the NPA (area code) and then the XXXX which identifies the station within the NXX. That's why our numbers look like this: NPA-NXX-XXXX.

When we are dialing with a number 1 in front of the NPA-NXX-XXXX this identifies the call as a long distance call. If you dial NXX-XXXX without the NPA, the call cannot be completed UNLESS you are inside the same NPA as the number you are dialing. This is a local call. For example, if I were in the 222 NPA and I called a NXX-XXXX with the NPA of 222 then the call will be successful. But if I leave the 222 area code and go to 333, and dial the same number it wont be successful.

If you are calling an international destination (for example, Canada), you dial a + sign which identifies the call as an international dialing and then the country code (since Canada is in North America it is 1) and then the NPA (if applicable) then the NXX-XXXX.

One thing I hear a lot is how are the numbers picked? The letter 'N' can be a number between 2-9, and the letter 'X' can be a number between 0-9.