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In 1947, the American Telephone and Telegraph Company (AT&T) devised the first nationwide telephone numbering plan and assigned the original North American area codes. The state of California was divided into three numbering plan areas (NPAs) with distinct area codes : 213 , 415 , and 916 , for the southern, central, and northern parts of the ...
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 code 510 was established on ...
The Oakland Hills neighborhoods comprise the highest elevations within the city's land area, following the alignment of the hills and the central section of the Hayward Fault Zone. The area includes all of Oakland lying east of State Route 13 and east of I-580 south of its junction with Route 13.
2023: returned to the pool of area codes available for future area code relief; 457: Louisiana (Shreveport–Bossier City, Monroe, Alexandria, Fisher, Tallulah, and most of northern Louisiana) September 25, 2025 [3] to be overlaid on 318; previously a fictitious area code assigned to identify Naked DSL/Dry Loop and dedicated data lines in ...
Area code 415 has been split three times due to the Bay Area's rapid economic growth and demand for telecommunication services: On March 1, 1959, area code 707 was created from the northern part, and area code 408 was created for San Jose, the South Bay, the Monterey Bay, and the Salinas Valley.
Quick Take: List of Scam Area Codes. More than 300 area codes exist in the United States alone which is a target-rich environment for phone scammers.
Aerial view of Downtown Satellite picture of the Oakland area in 2019. Oakland is in the eastern region of the San Francisco Bay. The United States Census Bureau says the city's total area is 78.0 square miles (202 km 2), including 55.8 square miles (145 km 2) of land and 22.2 square miles (57 km 2) (28.48 percent) of water.
Area code 209 was created in an area code split of area code 415 on October 26, 1957. On November 14, 1998, the southern half of this numbering plan area received the assignment of area code 559 . On October 24, 2021, 209 was transitioned to 1+10-digit dialing despite not being part of an overlay complex at that time.