Area Code 341 - Details, official location, official service date
https://www.areacodehelp.com/where/area_code_341.shtml
WebArea code 341 serves much of the Eastern Bay area in Alameda County and the western portion of Contra Costa County in California including the larger cities and communities of Alameda, Berkeley, Castro Valley, El Cerrito, Emeryville, Fremont, Hayward, Hercules, Newark, Oakland, Piedmont, Pinole, Richmond, San Leandro, San Lorenzo, San Pablo, …
DA: 74 PA: 21 MOZ Rank: 7 Up or Down: Up