213

From Wikipedia:

North American area code 213 is a California telephone area code which was one of California's original three area codes created in October 1947. It has historically been associated with Southern California and Los Angeles.

For all intensive purposes, it could be better associated with three of the Best of the West Coast Rappers, Snoop Dogg, Nate Dogg (they are related, I'm not kidding) and Warren G.

Song #213: 213 - Groupie Luv