| Region | Předvolba | Krátký popis |
| MX | 52 55 | Mexico: Mexico City area |
| NJ | 201 | N New Jersey: Jersey City, Hackensack |
| DC | 202 | Washington, D.C. |
| CT | 203 | Connecticut: Fairfield County and New Haven County; Bridgeport, New Haven |
| MB | 204 | Canada: Manitoba |
| AL | 205 | Central Alabama |
| WA | 206 | W Washington state: Seattle and Bainbridge Island |
| ME | 207 | Maine |
| ID | 208 | Idaho |
| CA | 209 | Cent. California: Stockton |
| TX | 210 | S Texas: San Antonio |
| -- | 211 | Local community info / referral services |
| NY | 212 | New York City, New York |
| CA | 213 | S California: Los Angeles |
| TX | 214 | Texas: Dallas Metro |
| PA | 215 | SE Pennsylvania: Philadelphia |
| OH | 216 | Cleveland |
| IL | 217 | Cent. Illinois: Springfield |
| MN | 218 | N Minnesota: Duluth |
| IN | 219 | NW Indiana: Gary |
| IL | 224 | Northern NE Illinois: Evanston, Waukegan, Northbrook |
| LA | 225 | Louisiana: Baton Rouge, New Roads, Donaldsonville, Albany, Gonzales, Greensburg, Plaquemine, Vacherie |
| ON | 226 | Canada: SW Ontario: Windsor |
| MS | 228 | S Mississippi |
| GA | 229 | SW Georgia: Albany |
| MI | 231 | W Michigan: Northwestern portion of lower Peninsula; Traverse City, Muskegon, Cheboygan, Alanson |
| OH | 234 | NE Ohio: Canton, Akron |
| VA | 236 | Virginia |
| FL | 239 | Florida |
| MD | 240 | W Maryland: Silver Spring, Frederick, Gaithersburg |
| -- | 242 | Bahamas |
| -- | 246 | Barbados |
| MI | 248 | Michigan: Oakland County, Pontiac |
| BC | 250 | Canada: British Columbia |
| AL | 251 | S Alabama: Mobile and coastal areas, Jackson, Evergreen, Monroeville |
| NC | 252 | E North Carolina |
| WA | 253 | Washington: South Tier - Tacoma, Federal Way |
| TX | 254 | Central Texas |
| AL | 256 | E and N Alabama |
| IN | 260 | NE Indiana: Fort Wayne |
| WI | 262 | SE Wisconsin: counties of Kenosha, Ozaukee, Racine, Walworth, Washington, Waukesha |
| -- | 264 | Anguilla |
| PA | 267 | SE Pennsylvania: Philadelphia |
| -- | 268 | Antigua and Barbuda |
| MI | 269 | SW Michigan: Kalamazoo, Saugatuck, Hastings, Battle Creek, Sturgis to Lake Michigan |
| KY | 270 | W Kentucky: Bowling Green, Paducah |
| VA | 276 | S and SW Virginia: Bristol, Stuart, Martinsville |
| MI | 278 | Michigan |
| TX | 281 | Texas: Houston Metro |
| OH | 283 | SW Ohio: Cincinnati |
| -- | 284 | British Virgin Islands |
| ON | 289 | Canada: S Cent. Ontario: Greater Toronto Area -- Durham, Halton, Hamilton-Wentworth, Niagara, Peel, York, and southern Simcoe County |
| MD | 301 | W Maryland: Silver Spring, Frederick, Camp Springs, Prince George's County |
| DE | 302 | Delaware |
| CO | 303 | Central Colorado: Denver |
| WV | 304 | West Virginia |
| FL | 305 | SE Florida: Miami, the Keys |
| SK | 306 | Canada: Saskatchewan |
| WY | 307 | Wyoming |
| NE | 308 | W Nebraska: North Platte |
| IL | 309 | W Cent. Illinois: Peoria |
| CA | 310 | S California: Beverly Hills, West Hollywood, West Los Angeles |
| -- | 311 | Reserved for special applications |
| IL | 312 | Illinois: Chicago |
| MI | 313 | Michigan: Detroit and suburbs |
| MO | 314 | SE Missouri: St Louis city and parts of the metro area only |
| NY | 315 | N Cent. New York: Syracuse |
| KS | 316 | S Kansas: Wichita |
| IN | 317 | Cent. Indiana: Indianapolis |
| LA | 318 | N Louisiana: Shreveport, Ruston, Monroe, Alexandria |
| IA | 319 | E Iowa: Cedar Rapids |
| MN | 320 | Cent. Minnesota: Saint Cloud |
| FL | 321 | Florida: Brevard County, Cape Canaveral area; Metro Orlando |
| CA | 323 | S California: Los Angeles |
| TX | 325 | Central Texas: Abilene, Sweetwater, Snyder, San Angelo |
| OH | 330 | NE Ohio: Akron, Canton, Youngstown; Mahoning County, parts of Trumbull/Warren counties |
| IL | 331 | W NE Illinois, western suburbs of Chicago |
| AL | 334 | S Alabama: Auburn/Opelika, Montgomery and coastal areas |
| NC | 336 | Cent. North Carolina: Greensboro, Winston-Salem, High Point |
| LA | 337 | SW Louisiana: Lake Charles, Lafayette |
| MA | 339 | Massachusetts: Boston suburbs, to the south and west |
| VI | 340 | US Virgin Islands |
| CA | 341 | |
| -- | 345 | Cayman Islands |
| NY | 347 | New York |
| MA | 351 | Massachusetts: north of Boston to NH, 508, and 781 |
| FL | 352 | Florida: Gainesville area, Ocala, Crystal River |
| WA | 360 | W Washington State: Olympia, Bellingham |
| TX | 361 | S Texas: Corpus Christi |
| CA | 369 | Solano County |
| OH | 380 | Ohio: Columbus |
| UT | 385 | Utah: Salt Lake City Metro |
| FL | 386 | N central Florida: Lake City |
| RI | 401 | Rhode Island |
| NE | 402 | E Nebraska: Omaha, Lincoln |
| AB | 403 | Canada: Southern Alberta |
| GA | 404 | N Georgia: Atlanta and suburbs |
| OK | 405 | W Oklahoma: Oklahoma City |
| MT | 406 | Montana |
| FL | 407 | Central Florida: Metro Orlando |
| CA | 408 | Cent. Coastal California: San Jose |
| TX | 409 | SE Texas: Galveston, Port Arthur, Beaumont |
| MD | 410 | E Maryland: Baltimore, Annapolis, Chesapeake Bay area, Ocean City |
| -- | 411 | Reserved for special applications |
| PA | 412 | W Pennsylvania: Pittsburgh |
| MA | 413 | W Massachusetts: Springfield |
| WI | 414 | SE Wisconsin: Milwaukee County |
| CA | 415 | California: San Francisco County and Marin County on the north side of the Golden Gate Bridge, extending north to Sonoma County |
| ON | 416 | Canada: S Cent. Ontario: Toronto |
| MO | 417 | SW Missouri: Springfield |
| QC | 418 | Canada: NE Quebec: Quebec |
| OH | 419 | NW Ohio: Toledo |
| TN | 423 | E Tennessee, except Knoxville metro area: Chattanooga, Bristol, Johnson City, Kingsport, Greeneville |
| CA | 424 | S California: Los Angeles |
| WA | 425 | Washington: North Tier - Everett, Bellevue |
| TX | 430 | NE Texas: Tyler |
| TX | 432 | W Texas: Big Spring, Midland, Odessa |
| VA | 434 | E Virginia: Charlottesville, Lynchburg, Danville, South Boston, and Emporia |
| UT | 435 | Rural Utah outside Salt Lake City metro |
| QC | 438 | Canada: SW Quebec: Montreal city |
| OH | 440 | Ohio: Cleveland metro area, excluding Cleveland |
| -- | 441 | Bermuda |
| CA | 442 | Far north suburbs of San Diego |
| MD | 443 | E Maryland: Baltimore, Annapolis, Chesapeake Bay area, Ocean City |
| QC | 450 | Canada: Southeastern Quebec; suburbs outside metro Montreal |
| -- | 456 | Inbound International |
| IL | 464 | Illinois: south suburbs of Chicago |
| TX | 469 | Texas: Dallas Metro |
| GA | 470 | Georgia: Greater Atlanta Metropolitan Area |
| -- | 473 | Grenada |
| CT | 475 | Connecticut: New Haven, Greenwich, southwestern |
| GA | 478 | Central Georgia: Macon |
| AR | 479 | NW Arkansas: Fort Smith, Fayetteville, Springdale, Bentonville |
| AZ | 480 | Arizona: East Phoenix |
| PA | 484 | SE Pennsylvania: Allentown, Bethlehem, Reading, West Chester, Norristown |
| -- | 500 | Personal Communication Service |
| AR | 501 | Central Arkansas: Little Rock, Hot Springs, Conway |
| KY | 502 | N Central Kentucky: Louisville |
| OR | 503 | Oregon |
| LA | 504 | E Louisiana: New Orleans metro area |
| NM | 505 | North central and northwestern New Mexico |
| NB | 506 | Canada: New Brunswick |
| MN | 507 | S Minnesota: Rochester, Mankato, Worthington |
| MA | 508 | Cent. Massachusetts: Framingham; Cape Cod |
| WA | 509 | E and Central Washington state: Spokane, Yakima, Walla Walla, Ellensburg |
| CA | 510 | California: Oakland, East Bay |
| -- | 511 | Nationwide travel information |
| TX | 512 | S Texas: Austin |
| OH | 513 | SW Ohio: Cincinnati |
| QC | 514 | Canada: SW Quebec: Montreal city |
| IA | 515 | Cent. Iowa: Des Moines |
| NY | 516 | New York: Nassau County, Long Island; Hempstead |
| MI | 517 | Cent. Michigan: Lansing |
| NY | 518 | NE New York: Albany |
| ON | 519 | Canada: SW Ontario: Windsor |
| AZ | 520 | SE Arizona: Tucson area |
| CA | 530 | NE California: Eldorado County area, excluding Eldorado Hills itself: incl cities of Auburn, Chico, Redding, So. Lake Tahoe, Marysville, Nevada City/Grass Valley |
| VA | 540 | Western and Southwest Virginia: Shenandoah and Roanoke valleys: Fredericksburg, Harrisonburg, Roanoke, Salem, Lexington and nearby areas |
| OR | 541 | Oregon: Eugene, Medford |
| NJ | 551 | N New Jersey: Jersey City, Hackensack |
| -- | 555 | Reserved for directory assistance applications |
| MO | 557 | SE Missouri: St Louis metro area only |
| CA | 559 | Central California: Fresno |
| FL | 561 | S. Central Florida: Palm Beach County |
| CA | 562 | California: Long Beach |
| IA | 563 | E Iowa: Davenport, Dubuque |
| WA | 564 | W Washington State: Olympia, Bellingham |
| OH | 567 | NW Ohio: Toledo |
| PA | 570 | NE and N Central Pennsylvania: Wilkes-Barre, Scranton |
| VA | 571 | Northern Virginia: Arlington, McLean, Tysons Corner |
| MO | 573 | SE Missouri: excluding St Louis metro area, includes Central/East Missouri, area between St. Louis and Kansas City |
| IN | 574 | N Indiana: Elkhart, South Bend |
| NM | 575 | New Mexico |
| OK | 580 | W Oklahoma |
| NY | 585 | NW New York: Rochester |
| MI | 586 | Michigan: Macomb County |
| -- | 600 | Canadian Services |
| MS | 601 | Mississippi: Meridian, Jackson area |
| AZ | 602 | Arizona: Phoenix |
| NH | 603 | New Hampshire |
| BC | 604 | Canada: British Columbia: Greater Vancouver |
| SD | 605 | South Dakota |
| KY | 606 | E Kentucky: area east of Frankfort: Ashland |
| NY | 607 | S Cent. New York: Ithaca, Binghamton; Catskills |
| WI | 608 | SW Wisconsin: Madison |
| NJ | 609 | S New Jersey: Trenton |
| PA | 610 | SE Pennsylvania: Allentown, Bethlehem, Reading, West Chester, Norristown |
| -- | 611 | Reserved for special applications |
| MN | 612 | Cent. Minnesota: Minneapolis |
| ON | 613 | Canada: SE Ontario: Ottawa |
| OH | 614 | SE Ohio: Columbus |
| TN | 615 | Northern Middle Tennessee: Nashville metro area |
| MI | 616 | W Michigan: Holland, Grand Haven, Greenville, Grand Rapids, Ionia |
| MA | 617 | Massachusetts: greater Boston |
| IL | 618 | S Illinois: Centralia |
| CA | 619 | S California: San Diego |
| KS | 620 | S Kansas: Wichita |
| AZ | 623 | Arizona: West Phoenix |
| CA | 626 | E S California: Pasadena |
| CA | 627 | No longer in use [was Napa, Sonoma counties |
| CA | 628 | |
| IL | 630 | W NE Illinois, western suburbs of Chicago |
| NY | 631 | New York: Suffolk County, Long Island; Huntington, Riverhead |
| MO | 636 | Missouri: W St. Louis metro area of St. Louis county, St. Charles County, Jefferson County area south |
| IA | 641 | Iowa: Mason City, Marshalltown, Creston, Ottumwa |
| NY | 646 | New York |
| ON | 647 | Canada: S Cent. Ontario: Toronto |
| -- | 649 | Turks & Caicos Islands |
| CA | 650 | California: Peninsula south of San Francisco -- San Mateo County, parts of Santa Clara County |
| MN | 651 | Cent. Minnesota: St. Paul |
| MO | 660 | N Missouri |
| CA | 661 | California: N Los Angeles, Mckittrick, Mojave, Newhall, Oildale, Palmdale, Taft, Tehachapi, Bakersfield, Earlimart, Lancaster |
| MS | 662 | N Mississippi: Tupelo, Grenada |
| -- | 664 | Montserrat |
| CA | 669 | Cent. Coastal California: San Jose |
| MP | 670 | Commonwealth of the Northern Mariana Islands |
| GU | 671 | Guam |
| GA | 678 | N Georgia: metropolitan Atlanta |
| MI | 679 | Michigan: Dearborn area |
| TX | 682 | Texas: Fort Worth areas |
| -- | 684 | American Samoa |
| FL | 689 | Central Florida: Metro Orlando |
| -- | 700 | Interexchange Carrier Services |
| ND | 701 | North Dakota |
| NV | 702 | S. Nevada: Clark County, incl Las Vegas |
| VA | 703 | Northern Virginia: Arlington, McLean, Tysons Corner |
| NC | 704 | W North Carolina: Charlotte |
| ON | 705 | Canada: NE Ontario: Sault Ste. Marie/N Ontario: N Bay, Sudbury |
| GA | 706 | N Georgia: Columbus, Augusta |
| CA | 707 | NW California: Santa Rosa, Napa, Vallejo, American Canyon, Fairfield |
| IL | 708 | Illinois: southern and western suburbs of Chicago |
| NL | 709 | Canada: Newfoundland and Labrador |
| -- | 710 | US Government |
| -- | 711 | Telecommunications Relay Services |
| IA | 712 | W Iowa: Council Bluffs |
| TX | 713 | Mid SE Texas: central Houston |
| CA | 714 | North and Central Orange County |
| WI | 715 | N Wisconsin: Eau Claire, Wausau, Superior |
| NY | 716 | NW New York: Buffalo |
| PA | 717 | E Pennsylvania: Harrisburg |
| NY | 718 | New York City, New York |
| CO | 719 | SE Colorado: Pueblo, Colorado Springs |
| CO | 720 | Central Colorado: Denver |
| PA | 724 | SW Pennsylvania |
| FL | 727 | Florida Tampa Metro: Saint Petersburg, Clearwater |
| TN | 731 | W Tennessee: outside Memphis metro area |
| NJ | 732 | Cent. New Jersey: Toms River, New Brunswick, Bound Brook |
| MI | 734 | SE Michigan: west and south of Detroit -- Ann Arbor, Monroe |
| TX | 737 | S Texas: Austin |
| OH | 740 | SE Ohio |
| CA | 747 | S California: Los Angeles, Agoura Hills, Calabasas, Hidden Hills, and Westlake Village |
| FL | 754 | Florida: Broward County area, incl Ft. Lauderdale |
| VA | 757 | E Virginia: Tidewater / Hampton Roads area -- Norfolk, Virginia Beach, Chesapeake, Portsmouth, Hampton, Newport News, Suffolk |
| -- | 758 | St. Lucia |
| CA | 760 | California: San Diego North County to Sierra Nevada |
| GA | 762 | N Georgia: Columbus, Augusta |
| MN | 763 | Minnesota: Minneapolis NW |
| CA | 764 | |
| IN | 765 | Indiana: outside Indianapolis |
| -- | 767 | Dominica |
| MS | 769 | Mississippi: Meridian, Jackson area |
| GA | 770 | Georgia: Atlanta suburbs: outside of I-285 ring road |
| FL | 772 | S. Central Florida: St. Lucie, Martin, and Indian River counties |
| IL | 773 | Illinois: city of Chicago, outside the loop |
| MA | 774 | Cent. Massachusetts: Framingham; Cape Cod |
| NV | 775 | N. Nevada: Reno |
| BC | 778 | Canada: British Columbia: Greater Vancouver |
| IL | 779 | NW Illinois: Rockford, Kankakee |
| AB | 780 | Canada: Northern Alberta, north of Lacombe |
| MA | 781 | Massachusetts: Boston surburbs, to the north and west |
| -- | 784 | St. Vincent & Grenadines |
| KS | 785 | N & W Kansas: Topeka |
| FL | 786 | SE Florida, Monroe County |
| PR | 787 | Puerto Rico |
| -- | 800 | US/Canada toll free |
| UT | 801 | Utah: Salt Lake City Metro |
| VT | 802 | Vermont |
| SC | 803 | South Carolina: Columbia, Aiken, Sumter |
| VA | 804 | E Virginia: Richmond |
| CA | 805 | S Cent. and Cent. Coastal California: Ventura County, Santa Barbara County: San Luis Obispo, Thousand Oaks, Carpinteria, Santa Barbara, Santa Maria, Lompoc, Santa Ynez Valley / Solvang |
| TX | 806 | Panhandle Texas: Amarillo, Lubbock |
| ON | 807 | Canada: W Ontario: Thunder Bay region to Manitoba border |
| HI | 808 | Hawaii |
| -- | 809 | Dominican Republic |
| MI | 810 | E Michigan: Flint, Pontiac |
| -- | 811 | Reserved for special applications |
| IN | 812 | S Indiana: Evansville, Cincinnati outskirts in IN, Columbus, Bloomington |
| FL | 813 | SW Florida: Tampa Metro |
| PA | 814 | Cent. Pennsylvania: Erie |
| IL | 815 | NW Illinois: Rockford, Kankakee |
| MO | 816 | N Missouri: Kansas City |
| TX | 817 | N Cent. Texas: Fort Worth area |
| CA | 818 | S California: Los Angeles: San Fernando Valley |
| QC | 819 | NW Quebec: Trois Rivieres, Sherbrooke, Outaouais |
| -- | 822 | US/Canada toll free |
| NC | 828 | W North Carolina: Asheville |
| -- | 829 | Dominican Republic |
| TX | 830 | Texas: region surrounding San Antonio |
| CA | 831 | California: central coast area from Santa Cruz through Monterey County |
| TX | 832 | Texas: Houston |
| -- | 833 | US/Canada toll free |
| PA | 835 | SE Pennsylvania: Allentown, Bethlehem, Reading, West Chester, Norristown |
| SC | 843 | South Carolina, coastal area: Charleston, Beaufort, Myrtle Beach |
| -- | 844 | US/Canada toll free |
| NY | 845 | New York: Poughkeepsie; Nyack, Nanuet, Valley Cottage, New City, Putnam, Dutchess, Rockland, Orange, Ulster and parts of Sullivan counties in New York's lower Hudson Valley and Delaware County in the Catskills |
| IL | 847 | Northern NE Illinois: northwestern suburbs of chicago |
| NJ | 848 | Cent. New Jersey: Toms River, New Brunswick, Bound Brook |
| FL | 850 | Florida panhandle, from east of Tallahassee to Pensacola |
| -- | 855 | US/Canada toll free |
| NJ | 856 | SW New Jersey: greater Camden area, Mt Laurel |
| MA | 857 | Massachusetts: greater Boston |
| CA | 858 | S California: San Diego |
| KY | 859 | N and Central Kentucky: Lexington; suburban KY counties of Cincinnati OH metro area; Covington, Newport, Ft. Thomas, Ft. Wright, Florence |
| CT | 860 | Connecticut: areas outside of Fairfield and New Haven Counties |
| NJ | 862 | N New Jersey: Newark Paterson Morristown |
| FL | 863 | Florida: Lakeland, Polk County |
| SC | 864 | South Carolina, upstate area: Greenville, Spartanburg |
| TN | 865 | E Tennessee: Knoxville, Knox and adjacent counties |
| -- | 866 | US/Canada toll free |
| YT | 867 | Canada: Yukon, Northwest Territories, Nunavut |
| -- | 868 | Trinidad and Tobago |
| -- | 869 | St. Kitts & Nevis |
| AR | 870 | Arkansas: areas outside of west/central AR: Jonesboro, etc |
| IL | 872 | Illinois: Chicago |
| -- | 876 | Jamaica |
| -- | 877 | US/Canada toll free |
| PA | 878 | Pittsburgh, New Castle |
| -- | 880 | Paid Toll-Free Service |
| -- | 881 | Paid Toll-Free Service |
| -- | 882 | Paid Toll-Free Service |
| -- | 888 | US/Canada toll free |
| -- | 898 | VoIP service |
| -- | 900 | US toll calls -- prices vary with the number called |
| TN | 901 | W Tennessee: Memphis metro area |
| NS | 902 | Canada: Nova Scotia, Prince Edward Island |
| TX | 903 | NE Texas: Tyler |
| FL | 904 | N Florida: Jacksonville |
| ON | 905 | Canada: S Cent. Ontario: Greater Toronto Area -- Durham, Halton, Hamilton-Wentworth, Niagara, Peel, York, and southern Simcoe County |
| MI | 906 | Upper Peninsula Michigan: Sault Ste. Marie, Escanaba, Marquette |
| AK | 907 | Alaska |
| NJ | 908 | Cent. New Jersey: Elizabeth, Basking Ridge, Somerville, Bridgewater, Bound Brook |
| CA | 909 | California: Inland empire: San Bernardino |
| NC | 910 | S Cent. North Carolina: Fayetteville, Wilmington |
| -- | 911 | Emergency |
| GA | 912 | SE Georgia: Savannah |
| KS | 913 | Kansas: Kansas City area |
| NY | 914 | S New York: Westchester County |
| TX | 915 | W Texas: El Paso |
| CA | 916 | NE California: Sacramento, Walnut Grove, Lincoln, Newcastle and El Dorado Hills |
| NY | 917 | New York: New York City |
| OK | 918 | E Oklahoma: Tulsa |
| NC | 919 | E North Carolina: Raleigh |
| WI | 920 | NE Wisconsin: Appleton, Green Bay, Sheboygan, Fond du Lac |
| CA | 925 | California: Contra Costa area: Antioch, Concord, Pleasanton, Walnut Creek |
| FL | 927 | Florida: Cellular coverage in Orlando area |
| AZ | 928 | Central and Northern Arizona: Prescott, Flagstaff, Yuma |
| TN | 931 | Middle Tennessee: semi-circular ring around Nashville |
| CA | 935 | S California: San Diego |
| TX | 936 | SE Texas: Conroe, Lufkin, Nacogdoches, Crockett |
| OH | 937 | SW Ohio: Dayton |
| PR | 939 | Puerto Rico |
| TX | 940 | N Cent. Texas: Denton, Wichita Falls |
| FL | 941 | SW Florida: Sarasota and Manatee counties |
| MI | 947 | Michigan: Oakland County |
| CA | 949 | California: S Coastal Orange County |
| CA | 951 | California: W Riverside County |
| MN | 952 | Minnesota: Minneapolis SW, Bloomington |
| FL | 954 | Florida: Broward County area, incl Ft. Lauderdale |
| TX | 956 | Texas: Valley of Texas area; Harlingen, Laredo |
| NM | 957 | New Mexico |
| CT | 959 | Connecticut: Hartford, New London |
| CO | 970 | N and W Colorado |
| OR | 971 | Oregon: Metropolitan Portland, Salem/Keizer area, incl Cricket Wireless |
| TX | 972 | Texas: Dallas Metro |
| NJ | 973 | N New Jersey: Newark, Paterson, Morristown |
| MO | 975 | N Missouri: Kansas City |
| -- | 976 | Unassigned |
| MA | 978 | Massachusetts: north of Boston to NH |
| TX | 979 | SE Texas: Bryan, College Station, Bay City |
| NC | 980 | North Carolina: |
| NC | 984 | E North Carolina: Raleigh |
| LA | 985 | E Louisiana: SE/N shore of Lake Pontchartrain: Hammond, Slidell, Covington, Amite, Kentwood, area SW of New Orleans, Houma, Thibodaux, Morgan City |
| MI | 989 | Upper central Michigan: Mt Pleasant, Saginaw |
| -- | 999 | Often used by carriers to indicate that the area code information is unavailable for CNID, even though the rest of the number is present |
