312 area code
#312 area code code#
On July 16, 2020, the Federal Communications Commission approved the designation of 988 as the 3-digit abbreviated dialing code for the National Suicide Prevention Lifeline. This will not affect any other customers in any other of the Arizona area codes. This will affect customers in the 480, 520 and 928 area codes. In other words, you will need to start including the area code when you dial a local call. Ten-digit dialing simply means that instead of dialing 7-digits of a telephone number, you will need to dial all 10-digits of the number in order to complete a local call. The North American Numbering Plan Administrator (NANPA) tracks the consumption of telephone numbers and assigns new area codes as necessary.ĩ88 PREFIX CONVERSION TO 10-DIGIT LOCAL DIALINGįOR THE ARIZONA 480, 520, AND 928 AREA CODES Who oversees the assignment of area codes? A nationwide map of area codes is located at the following web address. There are 10,000 possible combinations for the final four numbers (all the possible combinations from 0000 to 9999). A prefix can begin with any number other than 0 or 1 and cannot end with 11 (as in 911 or 411 – as these are reserved for special uses). A prefix is the three digits of your telephone number that follow the area code. Area codes were first developed in the late 1940s in order to meet the post-World War II surge in demand for telephone service. For example, in Arizona, 480 is an area code. An area code is the first three digits of your telephone number.