Supported Area Codes - 400-499

• Area 403 - Alberta
• Area 480 - Arizona
• Area 479 - Arkansas
• Area 424 - California
• Area 408 - California
• Area 415 - California
• Area 475 - Connecticut
• Area 407 - Florida
• Area 470 - Georgia
• Area 478 - Georgia
• Area 404 - Georgia
• Area 443 - Maryland
• Area 410 - Maryland
• Area 413 - Massachusetts
• Area 417 - Missouri
• Area 406 - Montana
• Area 402 - Nebraska
• Area 419 - Ohio
• Area 440 - Ohio
• Area 405 - Oklahoma
• Area 416 - Ontario
• Area 484 - Pennsylvania
• Area 412 - Pennsylvania
• Area 418 - Quebec
• Area 438 - Quebec
• Area 450 - Quebec
• Area 401 - Rhode Island
• Area 423 - Tennessee
• Area 430 - Texas
• Area 432 - Texas
• Area 469 - Texas
• Area 409 - Texas
• Area 435 - Utah
• Area 434 - Virginia
• Area 425 - Washington