US phone numbers
formatting, phone-number
Solution
The following formats are common:
+12312322334
2312322334
(231) 232-2334
2322334
232-2334
The last two forms are unusual, though may be encountered. The area code is implied to be local to the phone.
Note that there are some invalid entries: Numbers never start with a "1" (thats the long distance dial indicator, optional on cell phones), the "555" prefix is reserved (so commonly used in movies).
Problem
I'm building an app that uses phone numbers to perform different tasks, and recently I've had quite a few requests to implement it for the US market. Unfortunately as I live in the UK I don't have much knowledge of US phone number formats, and with so many USA users on here I was hoping some of you would be able to help. I'm looking to obtain a list of sample phone numbers as they appear in your call log on your mobile phones. I'm trying to determine if they come through in the format +1234567, +001234567, 001234567, 01234567, 1234567, 234567 etc, or perhaps the format can vary.. Hopefully you're hesitant about giving out phone numbers on the web, so feel free to change a few digits (I'm mainly interested in the first few digits and the format of the numbers). The more numbers you can provide the better, thanks!