Area Code 225 : splits off 504 in southern Louisiana
(8/1998; completed)
Area Code 228 : splits off 601 in southern Mississippi
(9/1997; completed)
Area Code 229 : splits off 912 in southwestern Georgia
(8/2000; completed)
Area Code 231 : splits off 616 in western Michigan
(6/1999; completed)
Area Code 239 : splits off 941 in southwestern Florida
(3/2002; completed)
Area Code 242 : splits off 809 in the Bahamas
(10/1996; completed)
Area Code 246 : splits off 809 in Barbados
(7/1996; completed)
Area Code 248 : splits off 810 in Oakland County, Michigan
(5/1997; completed)
Area Code 250 : splits off 604 in British Columbia, Canada
(10/1996; completed)
Area Code 251 : splits off 334 in southern Alabama
(6/2001; completed)
Area Code 252 : splits off 919 in North Carolina
(03/1998; completed)
Area Code 254 : splits off 817 in central Texas
(5/1997; completed)
Area Code 253 : splits off 206 in western Washington
(4/1997; completed)
Area Code 256 : splits off 205 in Alabama
(3/1998; completed)
Area Code 260 : splits off 219 in Indiana
(1/2002; completed)
Area Code 262 : splits off 414 in southeastern Wisconsin
(9/1999; completed)
Area Code 264 : splits off 809 in Anguilla
(3/1997; completed)
Area Code 268 : splits off 809 in Antigua and Barbuda
(4/1996; completed)
Area Code 269 : splits off 616 in southwestern Michigan
(7/2002; completed)
Area Code 270 : splits off 502 in western Kentucky
(4/1999; completed)
Area Code 276 : splits off 540 in Virginia
(9/2001; completed)
Area Code 281 : splits off 713 in Houston, TX suburbs
(11/1996; completed)
Area Code 284 : splits off 809 in British Virgin Islands
(10/1997; completed)
Area Code 320 : splits off 612 in central Minnesota
(3/1996; completed)
Area Code 321 : splits off AND overlays 407 in eastern central Florida
(11/1999; completed)
Area Code 323 : splits off 213 in Los Angeles, CA
(6/1998; completed)
Area Code 325 : splits off 915 in southern Texas
(4/2003; completed)
Area Code 330 : splits off 216 in northeastern Ohio
(3/1996; completed)
Area Code 334 : splits off 205 in southern Alabama
(1/1995; completed)
Area Code 336 : splits off 910 in North Carolina
(12/1997; completed)
Area Code 337 : splits off 318 in western Louisiana
(10/1999; completed)
Area Code 340 : splits off 809 in U.S. Virgin Islands
(6/1997; completed)
Area Code 345 : splits off 809 in Cayman Islands
(9/1996; completed)
Area Code 352 : splits off 904 in northern Florida
(12/1995; completed)
Area Code 360 : splits off 206 in western Washington state
(1/1995; completed)
Area Code 361 : splits off 512 in southeastern TX
(2/1999; completed)
Area Code 386 : splits off 904 in northern Florida
(2/2001; completed)
Area Code 423 : splits off 615 in eastern Tennessee
(9/1995; completed)
Area Code 425 : splits off 206 in western Washington
(4/1997; completed)
Area Code 432 : splits off 915 in southern Texas
(4/2003; completed)
Area Code 434 : splits off 804 in southern Virginia
(6/2001; completed)
Area Code 435 : splits off 801 in Utah
(9/1997; completed)
Area Code 440 : splits off 216 in northeastern Ohio
(8/1997; completed)
Area Code 441 : splits off 809 in Bermuda
(10/1995; completed)
Area Code 450 : splits off 514 in suburban Montreal, Quebec
(6/1998; completed)
Area Code 469 : overlaid on 214 and 972 in Dallas, TX area
(7/1999; completed)
Area Code 473 : splits off 809 in Grenada and Carriacou
(10/1997; completed)
Area Code 478 : splits off 912 in central Georgia
(8/2000; completed)
Area Code 479 : splits off 501 in northwestern Arkansas
(1/2002; completed)
Area Code 480 : splits off 602 in Phoenix, AZ metro area
(4/1999; completed)
Area Code 504 : reverse-splits off 985 in southeastern Louisiana
(7/2007)
Area Code 520 : splits off 602 in Arizona
(3/1995; completed)
Area Code 530 : splits off 916 in northeastern California
(11/1997; completed)
Area Code 540 : splits off 703 in central Virginia area
(7/1995; completed)
Area Code 541 : splits off 503 in Oregon
(11/1995; completed)
Area Code 559 : splits off 209 in California
(11/1998; completed)
Area Code 561 : splits off 407 in southeast Florida
(5/1996; completed)
Area Code 562 : splits off 310 in Los Angeles metro area
(1/1997; completed)
Area Code 563 : splits off 319 in Iowa
(3/2001; completed)
Area Code 570 : splits off 717 in central Pennsylvania
(12/1998; completed)
Area Code 573 : splits off 314 in Missouri
(1/1996; completed)
Area Code 574 : splits off 219 in Indiana
(1/2002; completed)
Area Code 575 : splits off 505 in New Mexico
(10/2007)
Area Code 580 : splits off 405 in western Oklahoma
(11/1997; completed)
Area Code 585 : splits off 716 in New York
(11/2001; completed)
Area Code 586 : splits off 810 in Michigan
(9/2001; completed)
Area Code 623 : splits off 602 in Phoenix, AZ metro area
(4/1999; completed)
Area Code 620 : splits off 316 in southern Kansas
(2/2001; completed)
Area Code 626 : splits off 818 in suburban Los Angeles
(6/1997; completed)
Area Code 630 : splits off 708 in Chicago metro area
(8/1996; completed)
Area Code 631 : splits off 516 in Suffolk County, L.I., NY
(11/1999; completed)
Area Code 636 : splits off 314 in Missouri
(5/1999; completed)
Area Code 641 : splits off 515 in Iowa
(7/2000; completed)
Area Code 649 : splits off 809 in Turks and Caicos Islands
(5/1997; completed)
Area Code 650 : splits off 415 in San Francisco area, CA
(8/1997; completed)
Area Code 651 : splits off 612 in Minnesota
(7/1998; completed)
Area Code 660 : splits off 816 in northwestern Missouri
(10/1997; completed)
Area Code 661 : splits off 805 in northern LA County, CA
(2/1999; completed)
Area Code 662 : splits off 601 in northern Mississippi
(4/1999; completed)
Area Code 664 : splits off 809 in Montserrat
(7/1996; completed)
Area Code 678 : overlaid on 404 and 770 in Metro Atlanta area, GA
(1/1998; completed)
Area Code 724 : splits off 412 in southwestern Pennsylvania
(2/1998; completed)
Area Code 727 : splits off 813 in Tampa area, Florida
(7/1998; completed)
Area Code 731 : splits off 901 in western Tennessee
(2/2001; completed)
Area Code 732 : splits off 908 in central New Jersey
(6/1997; completed)
Area Code 734 : splits off 313 in southeastern Michigan
(12/1997; completed)
Area Code 740 : splits off 614 in southeastern Ohio
(11/1997; completed)
Area Code 757 : splits off 804 in eastern Virginia
(7/1996; completed)
Area Code 758 : splits off 809 in St. Lucia
(7/1996; completed)
Area Code 760 : splits off 619 in southern California
(3/1997; completed)
Area Code 763 : splits off 612 in Minneapolis area, MN
(2/2000; completed)
Area Code 765 : splits off 317 in central Indiana
(2/1997; completed)
Area Code 767 : splits off 809 in Dominica
(10/1997; completed)
Area Code 770 : splits off 404 in Georgia
(8/1995; completed)
Area Code 772 : splits off 561 in Florida
(2/2002; completed)
Area Code 773 : splits off 312 in Chicago metro area
(10/1996; completed)
Area Code 775 : splits off 702 in Nevada
(12/1998; completed
Area Code 780 : splits off 403 in northern Alberta, Canada
(1/1999; completed)
Area Code 781 : splits off 617 in suburban Boston, MA
(9/1997; completed)
Area Code 785 : splits off 913 in northern Kansas
(6/1997; completed)
Area Code 787 : splits off 809 in Puerto Rico
(3/1996; completed)
Area Code 828 : splits off 704 in North Carolina
(3/1998; completed)
Area Code 830 : splits off 210 in San Antonio area, TX
(7/1997; completed)
Area Code 831 : splits off 408 in central coastal CA
(7/1998; completed)
Area Code 832 : overlaid on 713 and 281 in Houston, TX area
(1/1999; completed)
Area Code 843 : splits off 803 in coastal South Carolina
(3/1998; completed)
Area Code 845 : splits off 914 in southeastern NY
(6/2000; completed)
Area Code 847 : splits off 708 in Chicago metro area
(1/1996; completed)
Area Code 850 : splits off 904 in Florida panhandle
(6/1997; completed)
Area Code 856 : splits off 609 in southern New Jersey
(6/1999; completed)
Area Code 858 : splits off 619 in southern California
(6/1999; completed)
Area Code 859 : splits off 606 in central Kentucky
(4/2000; completed)
Area Code 860 : splits off 203 in upstate Connecticut
(8/1995; completed)
Area Code 863 : splits off 941 in south central Florida
(9/1999; completed)
Area Code 864 : splits off 803 in South Carolina
(12/1995; completed)
Area Code 865 : splits off 423 in eastern Tennessee
(11/1999; completed)
Area Code 867 : splits off 403 and 819 in Yukon / NWT, Canada
(10/1997; completed)
Area Code 868 : splits off 809 in Trinidad & Tobago
(6/1997; completed)
Area Code 869 : splits off 809 in St. Kitts & Nevis Islands
(10/1996; completed)
Area Code 870 : splits off 501 in Arkansas
(4/1997; completed)
Area Code 876 : splits off 809 in Jamaica
(5/1997; completed)
Area Code 910 : takes Davidson County, NC, from NPA 704
(8/1996; completed)
Area Code 920 : splits off 414 in southeastern Wisconsin
(7/1997; completed)
Area Code 925 : splits off 510 in Walnut Creek area, CA
(2/1998; completed)
Area Code 928 : splits off 520 in Arizona
(6/2001; completed)
Area Code 931 : splits off 615 in central Tennessee
(9/1997; completed)
Area Code 936 : splits off 409 in southeast Texas
(2/2000; completed)
Area Code 937 : splits off 513 in Cincinnati area
(9/1996; completed)
Area Code 937 : takes 5 more exchanges from 513 in Franklin, OH
(5/2001; completed)
Area Code 940 : splits off 817 in central Texas
(5/1997; completed)
Area Code 941 : splits off 813 in southwestern Florida
(5/1995; completed)
Area Code 949 : splits off 714 in southern Orange County, CA
(4/1998; completed)
Area Code 951 : splits off 909 in southern CA
(7/2004; completed)
Area Code 952 : splits off 612 in Minneapolis area, MN
(2/2000; completed)
Area Code 954 : splits off 305 in southern Florida
(9/1995; completed)
Area Code 956 : splits off 210 in San Antonio area, TX
(7/1997; completed)
Area Code 970 : splits off 303 in northern / western Colorado
(4/1995; completed)
Area Code 972 : splits off 214 in Dallas, TX suburbs
(9/1996; completed)
Area Code 973 : splits off 201 in northern New Jersey
(6/1997; completed)
Area Code 978 : splits off 508 in northern Massachusetts
(9/1997; completed)
Area Code 985 : splits off 504 in southeastern Louisiana
(2/2001; completed)
Area Code 979 : splits off 409 in southeast Texas
(2/2000; completed)
Area Code 989 : splits off 517 in lower peninsula, Michigan
(4/2001; completed)
Last update: June 27, 2007