North American Numbering Plan assigns area code 442 to persons living in these towns and cities in California: 

Find the real owner of someone with a 209 and 213, 310, 323, 341, 408 and 415, 424, 442, 510, 530, 559, 562, 619 and 858, 626, 650, 661, 707, 714, 760, 805, 831 and 818, 909, 916, 925, 949, 951 California area codes