The 341 area code is a telephone area code serving much of the East Bay in California. To start a free reverse phone lookup, simply enter the full 10-digit number (including the 341 area code) below and access available caller information such as name, address, and more.
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Area code 341 covers the western East Bay region of California. Specifically, it includes portions of Contra Costa and Alameda Counties.
Area code 341 is an overlay to area code 510. This means that both area codes serve the same geographic region. Area code 510 was established in 1991, and area code 341 was introduced later. Ten-digit dialing is mandatory in this area.
Area code 341 is a General Purpose Code which was placed in service on January 1, 1947.
Our reverse phone lookup will analyze the three-digit prefix of any 341 area code phone number and will show which telecommunications company and rate center it was initially assigned to. This prefix code data may help to determine the U.S. carrier, California geographic region, and local calling area associated with the phone number.
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| Rate Center | Number of Prefixes |
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