Area code 201 splits to 973 in northern New Jersey (6/1997; completed)
Area code 203 splits to 860 in upstate Connecticut (8/1995; completed)
Area code 205 splits to 334 in southern Alabama (1/1995; completed)
Area code 205 splits to 256 in Alabama (3/1998; completed)
Area code 206 splits to 360 in western Washington state (1/1995; completed)
Area code 206 splits to 253 and 425 in western Washington (4/1997; completed)
Area code 209 splits to 559 in California (11/1998; completed)
Area code 210 splits to 830 and 956 in San Antonio area, TX (7/1997; completed)
Area code 213 splits to 323 in Los Angeles, CA (6/1998; completed)
Area code 214 splits to 972 in Dallas, TX suburbs (9/1996; completed)
Area code 216 splits to 330 in northeastern Ohio (3/1996; completed)
Area code 216 splits to 440 in northeastern Ohio (8/1997; completed)
Area code 219 splits to 260 in Indiana (1/2002; completed)
Area code 219 splits to 574 in Indiana (1/2002; completed)
Area code 303 splits to 970 in northern / western Colorado (4/1995; completed)
Area code 305 splits to 954 in southern Florida (9/1995; completed)
Area code 310 splits to 562 in Los Angeles metro area (1/1997; completed)
Area code 312 splits to 773 in Chicago metro area (10/1996; completed)
Area code 313 splits to 734 in southeastern Michigan (12/1997; completed)
Area code 314 splits to 573 in Missouri (1/1996; completed)
Area code 314 splits to 636 in Missouri (5/1999; completed)
Area code 316 splits to 620 in southern Kansas (2/2001; completed)
Area code 317 splits to 765 in central Indiana (2/1997; completed)
Area code 318 splits to 337 in western Louisiana (10/1999; completed)
Area code 319 splits to 563 in Iowa (03/2001; completed)
Area code 334 splits to 251 in southern Alabama (06/2001; completed)
Area code 403 splits to 867 in Yukon / NWT, Canada (10/1997; completed)
Area code 403 splits to 780 in northern Alberta, Canada (1/1999; completed)
Area code 404 splits to 770 in Georgia (8/1995; completed)
Area code 405 splits to 580 in western Oklahoma (11/1997; completed)
Area code 407 splits to 561 in southeast Florida (5/1996; completed)
Area code 407 splits to 321 in east coastal Florida (11/1999; completed)
Area code 408 splits to 831 in central coastal CA (7/1998; completed)
Area code 409 splits to 936 and 979 in southeast Texas (2/2000; completed)
Area code 412 splits to 724 in southwestern Pennsylvania (2/1998; completed)
Area code 414 splits to 920 in southeastern Wisconsin (7/1997; completed)
Area code 414 splits to 262 in southeastern Wisconsin (9/1999; completed)
Area code 415 splits to 650 in San Francisco area, CA (8/1997; completed)
Area code 423 splits to 865 in eastern Tennessee (11/1999; completed)
Area code 501 splits to 870 in Arkansas (4/1997; completed)
Area code 501 splits to 479 in northwestern Arkansas (1/2002; completed)
Area code 502 splits to 270 in western Kentucky (4/1999; completed)
Area code 503 splits to 541 in Oregon (11/1995; completed)
Area code 504 splits to 225 in southern Louisiana (8/1998; completed)
Area code 504 splits to 985 in southeastern Louisiana (2/2001; completed)
Area code 505 splits to 575 in New Mexico (10/2007)
Area code 508 splits to 978 in northern Massachusetts (9/1997; completed)
Area code 510 splits to 925 in Walnut Creek area, CA (2/1998; completed)
Area code 512 splits to 361 in southeastern TX (2/1999; completed)
Area code 513 splits to 937 in Cincinnati area (9/1996; completed)
Area code 513 realigns to 937 in Franklin, OH (5/2001; completed)
Area code 514 splits to 450 in suburban Montreal, Quebec (6/1998; completed)
Area code 515 splits to 641 in Iowa (7/2000; completed)
Area code 516 splits to 631 in Suffolk County, L.I., NY (11/1999; completed)
Area code 517 splits to 989 in lower peninsula, Michigan (04/2001; completed)
Area code 520 splits to 928 in Arizona (06/2001; completed)
Area code 540 splits to 276 in Virginia (09/2001; completed)
Area code 561 splits to 772 in Florida (02/2002; completed)
Area code 601 splits to 228 in southern Mississippi (9/1997; completed)
Area code 601 splits to 662 in northern Mississippi (4/1999; completed)
Area code 602 splits to 520 in Arizona (3/1995; completed)
Area code 602 splits to 480 and 623 in Phoenix, AZ metro area (4/1999; completed)
Area code 604 splits to 250 in British Columbia, Canada (10/1996; completed)
Area code 606 splits to 859 in central Kentucky (4/2000; completed)
Area code 609 splits to 856 in southern New Jersey (6/1999; completed)
Area code 612 splits to 651 in Minnesota (7/1998; completed)
Area code 612 splits to 320 in central Minnesota (3/1996; completed)
Area code 612 splits to 763 and 952 in Minneapolis area, MN (2/2000; completed)
Area code 614 splits to 740 in southeastern Ohio (11/1997; completed)
Area code 615 splits to 423 in eastern Tennessee (9/1995; completed)
Area code 615 splits to 931 in central Tennessee (9/1997; completed)
Area code 616 splits to 231 in western Michigan (6/1999; completed)
Area code 616 splits to 269 in southwestern Michigan (7/2002; completed)
Area code 617 splits to 781 in suburban Boston, MA (9/1997; completed)
Area code 619 splits to 760 in southern California (3/1997; completed)
Area code 619 splits to 858 in southern California (6/1999; completed)
Area code 702 splits to 775 in Nevada (12/1998; completed
Area code 703 splits to 540 in central Virginia area (7/1995; completed)
Area code 704 splits to 910 in Davidson County, NC, realignment (8/1996; completed)
Area code 704 splits to 828 in North Carolina (3/1998; completed)
Area code 708 splits to 847 in Chicago metro area (1/1996; completed)
Area code 708 splits to 630 in Chicago metro area (8/1996; completed)
Area code 713 splits to 281 in Houston, TX suburbs (11/1996; completed)
Area code 714 splits to 949 in southern Orange County, CA (4/1998; completed)
Area code 716 splits to 585 in western NY (11/2001; completed)
Area code 717 splits to 570 in central Pennsylvania (12/1998; completed)
Area code 801 splits to 435 in Utah (9/1997; completed)
Area code 803 splits to 864 in South Carolina (12/1995; completed)
Area code 803 splits to 843 in coastal South Carolina (3/1998; completed)
Area code 804 splits to 757 in eastern Virginia (7/1996; completed)
Area code 804 splits to 434 in southern Virginia (6/2001; completed)
Area code 805 splits to 661 in northern LA County, CA (2/1999; completed)
Area code 809 splits to 441 in Bermuda (10/1995; completed)
Area code 809 splits to 787 in Puerto Rico (3/1996; completed)
Area code 809 splits to 268 in Antigua and Barbuda (4/1996; completed)
Area code 809 splits to 246 in Barbados (7/1996; completed)
Area code 809 splits to 664 in Montserrat (7/1996; completed)
Area code 809 splits to 758 in St. Lucia (7/1996; completed)
Area code 809 splits to 345 in Cayman Islands (9/1996; completed)
Area code 809 splits to 242 in the Bahamas (10/1996; completed)
Area code 809 splits to 869 in St. Kitts & Nevis Islands (10/1996; completed)
Area code 809 splits to 264 in Anguilla (3/1997; completed)
Area code 809 splits to 649 in Turks and Caicos Islands (5/1997; completed)
Area code 809 splits to 876 in Jamaica (5/1997; completed)
Area code 809 splits to 340 in U.S. Virgin Islands (6/1997; completed)
Area code 809 splits to 868 in Trinidad & Tobago (6/1997; completed)
Area code 809 splits to 284 in British Virgin Islands (10/1997; completed)
Area code 809 splits to 473 in Grenada and Carriacou (10/1997; completed)
Area code 809 splits to 767 in Dominica (10/1997; completed)
Area code 810 splits to 248 in Oakland County, Michigan (5/1997; completed)
Area code 810 splits to 586 in Macomb County, Michigan (9/2001; completed)
Area code 813 splits to 941 in southwestern Florida (5/1995; completed)
Area code 813 splits to 727 in Tampa area, Florida (7/1998; completed)
Area code 816 splits to 660 in northwestern Missouri (10/1997; completed)
Area code 817 splits to 254 and 940 in central Texas (5/1997; completed)
Area code 818 splits to 626 in suburban Los Angeles (6/1997; completed)
Area code 819 splits to 867 in Yukon / NWT, Canada (10/1997; completed)
Area code 901 splits to 731 in western Tennessee (2/2001; completed)
Area code 904 splits to 352 in northern Florida (12/1995; completed)
Area code 904 splits to 850 in Florida panhandle (6/1997; completed)
Area code 904 splits to 386 in northeastern Florida (2/2001; completed)
Area code 908 splits to 732 in central New Jersey (6/1997; completed)
Area code 909 splits to 951 in southern California (7/2004; completed)
Area code 910 splits to 336 in North Carolina (12/1997; completed)
Area code 912 splits to 229 in southwestern Georgia (8/2000; completed)
Area code 912 splits to 478 in central Georgia (8/2000; completed)
Area code 913 splits to 785 in northern Kansas (6/1997; completed)
Area code 914 splits to 845 in southeastern NY (6/2000; completed)
Area code 915 splits to 325 and 432 in southern TX (4/2003; completed)
Area code 916 splits to 530 in northeastern California (11/1997; completed)
Area code 919 splits to 252 in North Carolina (03/1998; completed)
Area code 941 splits to 863 in south central Florida (9/1999; completed)
Area code 941 splits to 239 in south central Florida (3/2002; completed)
Area code 985 returns some exchanges to 504 in southeastern Louisiana (7/2007)
Last update: June 27, 2007