List of North American Numbering Plan area codes - Wikipedia
https://en.wikipedia.org/wiki/List_of_North_American_Numbering_Plan_area_codes
Web568 reserved as a fifth area code for the region. 369: California (Vallejo, Crescent City, Eureka, Redwoods National Park, Santa Rosa, Ukiah, and most of northwestern California) February 1, 2023: overlaid on 707; 370–379: not in use; reserved in case a block of consecutive numbers is ever needed 377 is an easily recognizable code (ERC) 380
DA: 12 PA: 22 MOZ Rank: 65 Up or Down: Up