| 225 | Louisiana (Baton Rouge, New Roads, White Castle and central eastern Louisiana) More information at: Area Code 225 Phone Number Blocks |
| 318 | Louisiana (Shreveport, Monroe, Alexandria, Fisher, Tallulah and northern Louisiana) More information at: Area Code 318 Phone Number Blocks |
| 337 | Louisiana (Leesville, Lake Charles, Lafayette, New Iberia, Opelousas, De Ridder and southwestern Louisiana), split from 318 on October 11, 1999) More information at: Area Code 337 Phone Number Blocks |
| 504 | Louisiana (New Orleans, Metairie, Kenner and surrounding areas) More information at: Area Code 504 Phone Number Blocks |
| 985 | Louisiana (Houma, Slidell and southeastern Louisiana excluding New Orleans) More information at: Area Code 985 Phone Number Blocks |
