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Area codes 510 and 341 are telephone area codes in the North American Numbering Plan (NANP) serving much of the East Bay in the U.S. state of California. They cover parts of Contra Costa County and western Alameda County , including the city of Oakland , but excluding Dublin , Livermore , Pleasanton , and Sunol .
- Area codes 341 and 510
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- Area codes 341 and 510
21 juin 2018 · The state Public Utilities Commission decided to add a new area code to the western sections of the East Bay to avoid number exhaustion. The 510 and 341 area codes will co-exist in western Alameda County and western Contra Costa County, affecting 10-digit dialing.
22 juil. 2019 · OAKLAND, Calif. (KTVU, BCN) - It's here: On Monday the East Bay officially implemented its new 341 area code. The new numbers serve as an overlay to the 510 region to ensure a continuing...
7 févr. 2022 · Learn the history and significance of the 510 area code, which split from 415 in 1992 and covers Oakland, Berkeley, and Richmond. Find out how the area code is celebrated by locals and reflected in culture and business.
- David Debolt
Area codes 510 and 341 are telephone area codes in the North American Numbering Plan (NANP) serving much of the East Bay in the U.S. state of California. They cover parts of Contra Costa County and western Alameda County , including the city of Oakland , but excluding Dublin , Livermore , Pleasanton , and Sunol .
On November 1, 2024, it will also be overlaid by area code 738. 341: overlay with 510: started service on July 22, 2019. 350: overlay with 209: started service on November 28, 2022. 369: overlay with 707: started service on February 1, 2023. 408: San Jose, Sunnyvale, Gilroy, Morgan Hill, and Los Gatos; most of Santa Clara County.
