Area codes 402 and 531 - Alchetron, The Free Social Encyclopedia

Bay Area: Say hello to a new telephone area code

Area codes 310 and 424 - Alchetron, The Free Social Encyclopedia

Area code 604 - Alchetron, The Free Social Encyclopedia

Roll out the red carpet for “826”; Area code “540” phone numbers run out in Virginia

The '540' will soon have a new area code alongside it

East Bay residents: There's more dialing to do in the 510 area code

The 411 on area codes: How new tech and population growth fuels the need for more digits

The 411 on area codes: How new tech and population growth fuels the need for more digits