NPA - 510 (California)
The 510 area code is part of geographic numbering plan area that includes California.
There are a few special area codes with the last two digits 422 match, these are known as easily recognizable codes (ERCs). The 8xx set of numbers are reserved for toll-free services and communication.
This is California.
California is the most populated state in America and 3rd largest by land. It is arguably the most famous due to the movie and film industry situated there. As a result, it is home to a large portion of the world’s most well known and famous celebrities.
The state capital is Sacramento, despite the cities of Los Angeles and San Francisco being more densely populated. Sacramento is also the cultural and economic core of the Sacramento metropolitan area, which had a 2010 population of 2,414,783, making it the fifth largest in California.
The city is growing rapidly due to the increase in financial services industries locating there and as a major educational hub. Sacramento is known for its evolving contemporary culture, dubbed the most hipster city in California – although there are many in San Francisco who might disagree with this!
The Californian area of the Sierra Nevada (Spanish for "snowy range"), a range of mountains that is also part of Nevada, includes the highest summit of Mount Whitney at 14,505 feet. The range also includes the popular Yosemite Valley, known for its striking landscapes and features, and Lake Tahoe – the largest freshwater lake in the state.