Save. Lightheadedness can be caused by a variety of conditions. It is a fainting or dizzy sensation primarily caused by a decrease in blood flow to the brain. High blood pressure, heart attack, pregnancy, anxiety and depression are common reasons why an individual may experience feeling lightheaded.
California is currently using thirty two area codes, six of which were created as area code overlays. Area Code 628 is the most recent area code introduced. It was implemented as an overlay of area code 415 on March 21, 2015. California originally had three area codes, 213, 415, and 916 when the numbering system was established in 1947. By 1951, just four years later, California experienced sufficient growth in population and telephone use to need an additional area code.
Thus NANPA was left with the higher dial pull numbers for very high growth areas in Southern California and 626, 747, 818, 909, 949, 951 were brought in to service. NANPA has a number of policies when selecting a new split or overlay area code.