Local access and transport area
It represents a geographical area of the United States under the terms of the Modification of Final Judgment (MFJ) entered by the United States District Court for the District of Columbia in Civil Action number 82-0192 or any other geographic area designated as a LATA in the National Exchange Carrier Association, Inc.LATA boundaries tend to be drawn around markets, and not necessarily along existing state or area code borders.Since the breakup of the Bell System in 1984, however, some amount of deregulation, as well as a number of phone company mergers, have blurred the significance of these regions.Inter-carrier agreements, change proposals to the Federal Communications Commission (FCC), and new wiring developments into rural areas can and do often alter the effective borders between LATAs.[4] A Canadian LIR is geographically smaller than a US LATA, typically comparable in size to a small city's flat-rate local calling area or to an entire large regional municipality.While the LIRs resemble local calling areas in geographic size, there are some key differences: One example: The tiny unincorporated village of Beebe Plain, divided by the Quebec-Vermont border, is served by +1-819-876 Rock Island, Quebec, Canada (a remote station controlled from Magog) and +1-802-873 Derby Line, Vermont, USA (a remote station controlled from St. Johnsbury).
Modification of Final JudgmentNational Exchange Carrier AssociationBaby BellswirelinedivestedRegional Bell Operating Companyexchangearea codeNew York metropolitan areaGreenwich, ConnecticutChicago, IllinoisPortland, OregonMarylandVirginiaWest VirginiacarriersNew YorkNew EnglandVerizonConsolidated CommunicationsMid-AtlanticBell AtlanticFrontierGreat LakesAmeritechAT&T Inc.SoutheastBellSouthSouth-centralSouthwestern BellPacific NorthwestMidwestRocky MountainsUS WestCenturyLinkCaliforniaNevadaPacific BellCincinnati BellCincinnatiConnecticutbreakup of the Bell Systemderegulationmergerslong-distanceTelcordiaCanadaNorth American Numbering PlanMexicoCanadian Radio-television and Telecommunications CommissionLas VegasenclavesFederal Communications CommissionBirminghamHuntsvilleMontgomeryGeorgetownMobileMississippiPascagoulaEscambia CountyCenturyWalnut HillPhoenixWinterhavenSpirit MountainGlen Canyon, UtahTucsonVirdenNavajo NationSan Juan County, UtahFort SmithOklahomaPocolaMoffettColcordBarry CountyMissouriMaysville, ArkansasUniontown, ArkansasLittle RockWatson, OklahomaPine BluffJunction CityLouisianaSan FranciscoSacramentoFresnoLos AngelesLa Paz CountySan DiegoBakersfieldMontereyStocktonSan Luis ObispoPalm SpringsDenverColorado SpringsDamascusPrince George'sCharlesSt. Mary'sSterlingFredericksburgNorthern VirginiaPensacolaClear SpringsFloralaPanama CityGeorgiaTallahasseeJacksonvilleGainesvilleDaytona BeachOrlandoFort MyersAtlantaAlabamaOaklandHuguleyPhenix CityRanburneSavannahSouth CarolinaHardeevilleHilton Head Island