Add Yahoo as a preferred source to see more of our stories on Google. People in Phoenix with 602, 623 area codes to start dialing 10 digits for local calls Next month, people with 602 and 623 area ...

The addition of the 480 and 623 area codes in 1999 caused some initial confusion. The 520 area code was designated for areas outside Maricopa County in 1995. The 520 was split to add a 928 area code ...

Next month, people with 602 and 623 area codes must start dialing 10 digits (their area code +their phone number) for all local calls. The Utilities Department of the Arizona Corporation Commission ...