
#Area code 909 location code
The 909 area code was itself created in 1992, when the 714 area code was becoming overburdened. The 909/840 area code overlay is the 12th to be enacted in the state. “The 840 area code was picked because it doesn’t conflict with any adjacent area codes, and there are no dialing conflicts that will arise when the new area code is implemented,” said Heidi Wayman, data management manager for NANPA, the agency tasked with area code relief planning on behalf of the U.S. The change has been in the works since 2017, when the North American Numbering Plan Administrator applied to the California Public Utilities Commission to introduce a new area code to the region currently served by 909, which is expected to be depleted of available prefixes by the third quarter of 2021. Customers requesting new or additional telephone numbers will be assigned either a 909 or 840 area code depending on availability the new 840 numbers will begin to be placed in service February 23. Individuals and businesses that currently have 909 telephone numbers will not need to change them. County, and slivers of Orange and Riverside Counties currently served with the 909 area code The affected areas include the southwestern portion of San Bernardino County, the eastern part of L.A.The new 840 area code is being assigned to residences and businesses seeking new phone numbers and will be placed in service starting February 23.

The new dialing protocol is necessary to accommodate an additional area code for the area now served by 909.Starting Saturday, anyone calling a 909 phone number will need to dial "1" plus the area code plus the telephone number.
