| 700 | Long Distance carrier use for pre-subscribing phone numbers, 1-700-555-4141 most often gives a recorded message indicating the default carrier on a line.More information at: Area Code 700 Phone Number Blocks |
| 701 | North Dakota (all)More information at: Area Code 701 Phone Number Blocks |
| 702 | Nevada (almost all of Clark County, including all of the Las Vegas Valley, including Henderson and Boulder City)More information at: Area Code 702 Phone Number Blocks |
| 703 | Virginia (Northern Virginia: Alexandria, Arlington, Fairfax, Prince William and eastern Loudoun counties, overlaid by 571)More information at: Area Code 703 Phone Number Blocks |
| 704 | North Carolina (Charlotte, Gastonia, Concord, Salisbury, and south central North Carolina, overlaid by 980)More information at: Area Code 704 Phone Number Blocks |
| 705 | Ontario (northeastern and central-North Bay, Sudbury, Sault Ste. Marie, Timmins, Barrie)More information at: Area Code 705 Phone Number Blocks |
| 706 | Georgia (Augusta, Columbus, Lagrange, Rome, Dalton, Thomaston and northern and west central Georgia), to be overlayed in 2006 despite having two completely separate disconnected partsMore information at: Area Code 706 Phone Number Blocks |
| 707 | California (North Bay, Vallejo, Santa Rosa, Fort Bragg, Crescent City, Eureka, Ukiah and northwestern California)More information at: Area Code 707 Phone Number Blocks |
| 708 | Illinois (Chicago Heights, Tinley Park, Cicero, Oak Forest, Oak Park, Berwyn, and southern and inner western Chicago suburbs)More information at: Area Code 708 Phone Number Blocks |
| 709 | Newfoundland and LabradorMore information at: Area Code 709 Phone Number Blocks |
| 710 | U.S. Government Special ServicesMore information at: Area Code 710 Phone Number Blocks |
| 711 | Telephone devices for the deaf/Relay Service for TTY to Voice and Voice to TTYMore information at: Area Code 711 Phone Number Blocks |
| 712 | Iowa (Estherville, Council Bluffs, Sioux City, Sheldon, Denison and western Iowa)More information at: Area Code 712 Phone Number Blocks |
| 713 | Texas (Houston area, overlays with 281 and 832)More information at: Area Code 713 Phone Number Blocks |
| 714 | California (Santa Ana, Huntington Beach, Orange, Garden Grove, Tustin, Anaheim, and northern Orange County)More information at: Area Code 714 Phone Number Blocks |
| 715 | Wisconsin (Rhinelander, Wausau, Eau Claire, Rice Lake, Ashland and northern Wisconsin)More information at: Area Code 715 Phone Number Blocks |
| 716 | New York (Buffalo, Jamestown, Niagara Falls, Tonawanda, Olean, and western New York)More information at: Area Code 716 Phone Number Blocks |
| 717 | Pennsylvania (Harrisburg, Gettysburg, Lancaster, York and south-central Pennsylvania)More information at: Area Code 717 Phone Number Blocks |
| 718 | New York (New York City: Brooklyn, Queens, Bronx, and Staten Island only; overlays with 347 and 917)More information at: Area Code 718 Phone Number Blocks |
| 719 | Colorado (Leadville, Pueblo, Colorado Springs, Trinidad, Rocky Ford, La Junta and southeastern Colorado)More information at: Area Code 719 Phone Number Blocks |
| 720 | Colorado (Boulder, Longmont, Aurora, Denver and central Colorado, overlays with 303)More information at: Area Code 720 Phone Number Blocks |
| 724 | Pennsylvania (New Castle, Washington, Uniontown and south western Pennsylvania, overlays with 878)More information at: Area Code 724 Phone Number Blocks |
| 727 | Florida (all of Pinellas County including Clearwater, St Petersburg, Dunedin; coastal-only parts of Pasco County)More information at: Area Code 727 Phone Number Blocks |
| 730 | Illinois Overlay of Area code 618More information at: Area Code 730 Phone Number Blocks |
| 731 | Tennessee (West Tennessee excluding greater Memphis: Union City, Jackson, Dyersburg, Martin, Brownsville, Paris, Bolivar), split from 901More information at: Area Code 731 Phone Number Blocks |
| 732 | New Jersey (New Brunswick, Neptune, Lakewood, and east central New Jersey, overlays with 848)More information at: Area Code 732 Phone Number Blocks |
| 734 | Michigan (Ann Arbor, Canton, Plymouth, Monroe, Wayne, Ypsilanti, Romulus and southwestern Detroit suburbs)More information at: Area Code 734 Phone Number Blocks |
| 737 | Texas This Area code is scheduled to provide numbering relief to area code 512 but no date has been assigned for this to go into effect.More information at: Area Code 737 Phone Number Blocks |
| 740 | Ohio (Jackson, Lancaster, Marietta, Marion, Cambridge, Zanesville, New Castle, Athens, and southeastern Ohio)More information at: Area Code 740 Phone Number Blocks |
| 747 | California (San Fernando Valley) This Area code is scheduled to provide numbering relief to area code 818 but no date has been assigned for this to go into effect.More information at: Area Code 747 Phone Number Blocks |
| 754 | Florida (All of Broward County: Fort Lauderdale, Hollywood, Coral Springs, overlays with 954)More information at: Area Code 754 Phone Number Blocks |
| 757 | Virginia (Hampton Roads area and Eastern Shore; until the mid-1990s, a part of 804)More information at: Area Code 757 Phone Number Blocks |
| 758 | Saint Lucia, split from 809. (all)More information at: Area Code 758 Phone Number Blocks |
| 760 | California (Bishop, Ridgecrest, Barstow, eastern portions of San Bernardino and Riverside counties (including the Palm Springs-Indio area), Imperial County, and outer northern suburbs and eastern mountains of San Diego County)More information at: Area Code 760 Phone Number Blocks |
| 762 | Georgia (Augusta, Columbus, Lagrange, Rome, Dalton and northern and west central Georgia) Overlay code for area code 706More information at: Area Code 762 Phone Number Blocks |
| 763 | Minnesota (Maple Grove, Monticello, Elk River, Fridley, Blaine, and northwest Minneapolis area)More information at: Area Code 763 Phone Number Blocks |
| 764 | California This Area code is scheduled to provide numbering relief to Area code 650 but no date has been assigned for this to go into effect.More information at: Area Code 764 Phone Number Blocks |
| 765 | Indiana (Lafayette, Marion, Muncie, Richmond and central Indiana excluding Indianapolis)More information at: Area Code 765 Phone Number Blocks |
| 767 | Commonwealth of Dominica, split from 809. (all)More information at: Area Code 767 Phone Number Blocks |
| 769 | Mississippi (overlays with 601)More information at: Area Code 769 Phone Number Blocks |
| 770 | Georgia (Marietta, Cedartown, and central north Georgia (suburban metro Atlanta) outside Atlanta's Perimeter highway; overlaid by most of 678)More information at: Area Code 770 Phone Number Blocks |
| 772 | Florida (Vero Beach, Port Saint Lucie, Fort Pierce, Sebastian, Stuart and central eastern Florida)More information at: Area Code 772 Phone Number Blocks |
| 773 | Illinois (City of Chicago, excluding downtown; see also 312)More information at: Area Code 773 Phone Number Blocks |
| 774 | Massachusetts (Worcester, New Bedford and southeastern Massachusetts, overlays with 508)More information at: Area Code 774 Phone Number Blocks |
| 775 | Nevada (Reno, Elko, Ely and all of Nevada except Clark County and the Las Vegas Valley)More information at: Area Code 775 Phone Number Blocks |
| 778 | British Columbia (Greater Vancouver Regional District and Abbotsford only as part of the 604 concentrated overlay. Will overlay both area code 604 and area code 250 (ie. the entire province of British Columbia) in 2008.)More information at: Area Code 778 Phone Number Blocks |
| 779 | Illinois (Crystal Lake, Rockford, Joliet, and other outlying suburbs of Chicago; It overlays with 815)More information at: Area Code 779 Phone Number Blocks |
| 780 | Alberta (Edmonton, Jasper, Grande Prairie, Peace River and northern Alberta, split from 403)More information at: Area Code 780 Phone Number Blocks |
| 781 | Massachusetts (Saugus, Norwood, Waltham, Woburn, east central Massachusetts and other Boston suburbs along Route 128, overlays with 339)More information at: Area Code 781 Phone Number Blocks |
| 784 | Saint Vincent and the Grenadines, split from 809. (all)More information at: Area Code 784 Phone Number Blocks |
| 785 | Kansas (Colby, Topeka, Salina, Manhattan, Lawrence and northern Kansas)More information at: Area Code 785 Phone Number Blocks |
| 786 | Florida (exactly Miami-Dade County, not Florida Keys; overlays with most of 305)More information at: Area Code 786 Phone Number Blocks |
| 787 | Puerto Rico (overlays with 939), split from 809.More information at: Area Code 787 Phone Number Blocks |
