LATA would move to a proposed 234 area code while the Daytona Beach LATA would change to the 386 area code. The Panhandle would have retained the 904 area code. Outcry from the public and business community in the Jacksonville region was significant since Jacksonville is the largest urban area in northern Florida, and would thus face a greater expense and burden to change phone numbers, reprogram cell phones and update printed materials than other parts of the area code. When an area code is split, normal practice calls for the old area code to be retained by the largest city in the former area code territory in order to minimize disruption. There was also opposition from NANPA and the Federal Communications Commission. These two agencies objected because the split would have been unbalanced by creating a new code just for Daytona Beach. The Florida PSC changed course and adopted the plan that was ultimately implemented with the Panhandle, including Tallahassee, moving to 850 and Jacksonville and Daytona Beach retaining 904. The 234 area code has since been put into service in Ohio as an overlay to area code 330. Relief planning for an overlay Area code 850 exhausted its available supply of central office codes in May 2021. Based on previous exhaust forecasts, NANPA began relief planning to provide additional numbering capacity in the 850 region. An initial planning meeting was held on May 16, 2019, where industry members recommended an all-services overlay as the preferred relief method. NANPA subsequently filed a request with the Florida Public Service Commission to approve a new area code overlaying 850. The Florida Public Service Commission approved the industry's all-services overlay recommendation on November 5, 2019. The new area code, 448, was officially assigned to overlay 850. Ten-digit dialing became mandatory on May 22, 2021. The in-service date, when first central office code assignment can become effective, is June 22, 2021. The first central office code assignment within the 448 area code occurred on May 14, 2021. Service area The 850/448 overlay numbering plan area comprises the following cities. Apalachicola Bonifay Blountstown Bristol Campbellton Cantonment Century Chipley Cottondale Crawfordville Crestview DeFuniak Springs Destin Fort Walton Beach Graceville Greenville Gulf Breeze Jay Lynn Haven Marianna Madison Milton Miramar Beach Monticello Mossy Head Navarre Niceville Pace Panama City Pensacola Perry Port Saint Joe Quincy Sopchoppy Tallahassee (State Capital) Valparaiso Wewahitchka See also List of Florida