List of United States telephone companies

Regional Bell Operating Companies

The Regional Bell Operating Companies (RBOCs) are the result of the break-up of the Bell System in 1984.

  • AT&T Inc.: Alabama, Arkansas, California, Florida, Georgia, Illinois, Indiana, Kansas, Kentucky, Louisiana, Michigan, Mississippi, Missouri, Nevada, North Carolina, Ohio, Oklahoma, South Carolina, Tennessee, Texas, Wisconsin
  • Verizon: Delaware, District of Columbia, Maryland, Massachusetts, New Jersey, New York, Pennsylvania, Rhode Island, Virginia
  • CenturyLink: Arizona, Colorado, Idaho, Iowa, Minnesota, Missouri, Montana, Nebraska, Nevada, New Mexico, North Dakota, Oregon, South Dakota, Texas, Utah, Washington, Wyoming
  • Frontier Communications: Alabama, Arizona, California, Connecticut, Florida, Georgia, Illinois, Indiana, Iowa, Michigan, Minnesota, Mississippi, Nebraska, Nevada, New Mexico, New York, North Carolina, Ohio, Pennsylvania, South Carolina, Tennessee, Texas, Utah, West Virginia, Wisconsin, (GTE areas in California, Texas, Florida, purchased from Verizon in 2016)
Remaining RBOC map as of 2005. Note that Qwest is now CenturyLink, BellSouth is now AT&T, and AT&T in Connecticut (formerly SNET) is now Frontier.

Other major incumbent local exchange carriers

In the following states and regions, the primary local carrier is not an RBOC:

  • CenturyLink, in addition to its role as the RBOC in the areas gained from its acquisition of Qwest, CenturyLink serves mainly rural and smaller city local exchanges in 33 states.
  • Frontier Communications, in addition to its role as the RBOC for West Virginia, now serves mainly rural and some suburban and smaller city areas in 27 other states (many formerly part of the GTE ILEC system purchased from Verizon). It also purchased AT&T's landline business in Connecticut in 2013, though these are not considered an RBOC, as the Southern New England Telephone Company, from which they descend, was a franchisee of the Bell System, and not subject to the same regulations after the Bell System breakup.
  • Windstream, founded in 2006 with the spinoff of Alltel's wireline division and simultaneous merger with Valor Telecom, serves mainly rural areas in 29 states.
  • Consolidated Communications, in addition to access lines in Maine, New Hampshire, and Vermont, in Northern New England which it gained from its acquisition of FairPoint, also serves rural areas in 21 other states.[1]
  • Telephone and Data Systems, (through its subsidiary TDS) serves mainly rural areas in parts of 36 states.[2]
  • Cincinnati Bell, which serves the greater Cincinnati area, and Hawaii due to its acquisition of Hawaiian Telcom[3] was not included in the Bell System breakup of 1984 because the former AT&T held only a minority stake in that company.
  • Verizon, in addition to its role as a RBOC in its areas retained in the East, serves former GTE areas in Pennsylvania and Virginia. Verizon formerly served California, Florida and Texas before selling to Frontier Communications in 2016.
  • Claro Puerto Rico, which serves every exchange in Puerto Rico, has been owned by the international telecommunications giant América Móvil since in 2007.[4]

Many other individual communities or smaller regions are also served by non-RBOC companies.

Regional telephone companies and VOIP providers by state

StateRegional Bell operating company (RBOC)[5]Other telephone companies
AlabamaAT&T, CenturyLink[6]C Spire, Birch, Windstream, Fairpoint, Frontier Communications, Comcast, Charter Communications, TDS Telecom, Matrix, Cytranet, Comtech21
AlaskaAlaska CommunicationsAlaskaTel, Alaska Power and Telephone Company, Alaska Communications, GCI, Cordova Telephone Cooperative, Matanuska Telephone Association, Tel Alaska, Copper Valley Telephone Cooperative
ArizonaAT&T, CenturyLinkCox, Crexendo Inc., Frontier Communications, Matrix, Nextiva, Windstream, TDS Telecom, Comtech21, Charter Communications, Smith Bagley Inc dba Cellular One of NE AZ
ArkansasAT&T, CenturyLinkBirch, Sage Telecom, Windstream, Comcast, Ritter Communications, TDS Telecom, Matrix, Comtech21
CaliforniaAT&T, CenturyLink, Frontier CommunicationsBirch, Carolina Digital Phone,[7] Comcast, Sage Telecom, Sonic.net, Blue Casa, Windstream, Frontier Communications, Charter Communications, Pacific Telephone Company, Cox Communications, TDS Telecom, Matrix, TelePacific Communications, TCAST Communications, Wiline Internet And Voice, Consolidated Communications, ZTelco, Comtech21
ColoradoCenturyLinkComcast, Charter Communications, FairPoint, Windstream, TDS Telecom, Matrix, Comtech21, Teliax
ConnecticutCenturyLink, Frontier (formerly AT&T)[8]Broadview Networks, Sage Telecom, Comcast Xfinity, Windstream, Charter Communications, Cox, Altice, Matrix, LinkUP Broadband, Comtech21
DelawareCenturyLink, VerizonBirch, Broadview Networks CloseCall America, Atlantic Broadband, Cavalier Telephone, Comcast, Matrix, Comtech21
District of ColumbiaAT&T, CenturyLink, VerizonBroadview Networks, Comcast Cavalier, RCN, Windstream, Matrix, Comtech21
FloridaAT&T, CenturyLink, Frontier CommunicationsON DRIVE TECHS, Birch, VoiceOnyx Business Phone Service, Nettalk Inc. USA, Cavalier, Northlake Telecom, CloseCall America, Access Integrated Networks, Comcast, Deltacom, Engage Communications, Fairpoint, FracTEL LLC, Windstream, Frontier Communications, Cox Communications, Charter Communications, Atlantic Broadband, TDS Telecom, Matrix, Sling Broadband, Star2Star Communications, LIghtspeed Voice, Xpedeus, Comtech21, C Spire
GeorgiaAT&T, CenturyLinkBirch, Cavalier, Cox, Comcast, Deltacom, Windstream, Frontier Communications, Charter Communications, Cox Communications, Hargray, TDS Telecom, Matrix, Comtech21, Ellijay Telephone Company, Hart Telephone Company
HawaiiHawaiian Telcom owned by Cincinnati BellServpac, Sandwich Isles Communications, CenturyLink, Charter Communications (Statewide), Comtech21
IdahoAT&T, CenturyLinkFrontier Communications, Cable One (Boise Area), Charter Communications, TDS Telecom, Matrix, Comtech21
IllinoisAT&T, CenturyLink, Frontier CommunicationsBirch, Cavalier, Sage Telecom, CloseCall America, Consolidated Communications, Comcast, Fairpoint, Mediacom, RCN (Chicago Area), Windstream, Frontier Communications, Charter Communications, TDS Telecom, NewCore Wireless, Matrix, RangaTel, Comtech21, Madison Communications, Leaf River Telephone Company, Hamilton County Communications, Wabash Communications Co-Op, New Windsor Telephone Company, Shawnee Communications, Montrose Mutual Telephone Company, A-G Communications, HomeTel, Egyptian Telephone Cooperative, Flat Rock Telephone Co-Op, Frontier Communications
IndianaAT&T, CenturyLink, Frontier CommunicationsBirch, Zentality Communications, Smithville Fiber, Sage Telecom, Comcast, Cincinnati Bell, CloseCall America, Frontier Communications, Windstream, TDS Telecom, Matrix, Charter Communications, Comtech21, Mulberry Communications, Perry-Spencer Communications, Clay County Rural Telephone d/b/a Endeavor Communications, Enhanced Telecommunications d/b/a ETC, Craigville Communications, Ligonier Telephone Company, New Paris Telephone Company, Indigital, Rochester Telephone Company, Sweetser Telephone Company, Geetingsville Telephone Company, Swayzee Communications, Yeoman Telephone Company, Daviess-Martin Telephone Company, Washington County Rural Telephone d/b/a Telemedia, Ninestar Communications, New Lisbon Telephone Company, NITCO, Metronet, Lightstream Communications.
IowaCenturyLinkBirch, Windstream, Frontier Communications, Mediacom, Matrix, TDS Telecom, NewCore Wireless, Comtech21
KansasAT&T, CenturyLinkBirch, Sage Telecom, Rural Telephone, CloseCall America, Cox, Fairpoint, Matrix, Charter Communications, Consolidated Communications, Comtech21, Encounter Wireless Communications
KentuckyAT&T, CenturyLink, VerizonBirch, Brandenburg Telephone Company, Cincinnati Bell, Windstream, TDS Telecom, Matrix, Charter Communications, Comtech21
LouisianaAT&T, CenturyLinkBirch, Cavalier, Access Integrated Networks, Deltacom, Windstream, Charter Communications, Cox, Matrix, Comtech21
MaineConsolidated Communications (formerly FairPoint)Broadview Networks, Comcast, CloseCall America, FairPoint, Lincolnville Telephone Company, Windstream, Charter Communications, TDS Telecom, Matrix, Comtech21
MarylandCenturyLink, VerizonBirch, Broadview Networks, Comcast, Cavalier, CloseCall America, Easton Velocity, Armstrong, Windstream, Atlantic Broadband, PanTerra Networks, RCN (Montgomery County), Matrix, Comtech21
MassachusettsConsolidated Communications, VerizonBirch, Broadview Networks, DSCI Corp., Comcast, CloseCall America, RCN (Boston Area), Charter Communications, Matrix, Comtech21
MichiganCenturyLink, AT&TBirch, 123Net, Sage Telecom, Cavalier, CloseCall America, TDS Metrocom, Westphalia Telephone Company, Lennon Telephone Company, MichTel, Frontier Communications, Charter Communications, Comcast, Windstream, Matrix, TelNet Worldwide, BullsEye Telecom, Comtech21.
MinnesotaCenturyLinkArvig, Arrowhead Electric Cooperative, Birch, Comcast, Sage Telecom, Frontier Communications, Charter Communications, Midcontinent Communications, Minnetonka Telecom, Windstream, TDS Telecom, Matrix, NewCore Wireless, PanTerra Networks, Integra Telecom, Mediacom, Consolidated Communications, Jaguar Communications, US Internet.
MississippiAT&T, CenturyLinkC Spire, Birch, Cavalier, Comcast, Deltacom, Windstream, Frontier Communications, MegaGate Broadband, Charter Communications, TDS Telecom, Matrix, Comtech21
MissouriAT&T, CenturyLinkBig River Telephone Company, Birch, Windstream, Sage Telecom, KLM Telephone Company, Charter Communications, FairPoint, TDS Telecom, Matrix, Consolidated Communications, Comtech21
MontanaCenturyLinkBirch, Charter Communications, Frontier Communications, Matrix, Comtech21
NebraskaAT&T, CenturyLinkBirch, Windstream, Frontier Communications, Charter Communications, Cox, Midcontinent Communications, Matrix, Comtech21
NevadaAT&T, CenturyLink, VerizonFrontier Communications, CC Communications, Charter Communications, Cox, Matrix, Telecom North America, TelePacific Communications, Comtech21
New HampshireCenturyLink, Consolidated Communications (formerly FairPoint)Broadview Networks, CloseCall America, Bretton Woods Telephone, Dixville Telephone Company, Dunbarton Telephone Company, Granite State Communications, TDS Telecom, Windstream, Matrix, Union Telephone Co, Northland Telephone Co,[9] Comtech21, Comcast
New JerseyCenturyLink, VerizonBirch, Broadview Networks, Cavalier, CloseCall America, Covista Communications, Windstream, Charter Communications, Cablevision, Comcast, Service Electric, Matrix, Comtech21
New MexicoCenturyLinkBirch, Comcast, Cable One, Windstream, Frontier Communications, Matrix, Comtech21, Smith Bagley Inc dba Cellular One of NE AZ
New YorkCenturyLink, VerizonBirch, Broadview Networks, Cavalier, CloseCall America, Pure Minutes Mobile, Frontier Communications, Armstrong, Fairpoint, Windstream, Regional Telephone Corporation, Frontier Communications, Charter Communications, Cablevision, OVETEL Atlantic Broadband, TDS Telecom, Finger Lakes Technologies Group, RCN (Manhattan and Queens), Matrix, The Flat Planet Phone Company, Comtech21
North CarolinaAT&T, CenturyLinkBirch, Cavalier, Deltacom, Frontier Communications, Windstream, Charter Communications, ATMC, TDS Telecom, Matrix, North State Communications, Comtech21
North DakotaCenturyLinkSRT Communications, Birch, Dickey Rural Communications, Bek Telephone, Consolidated Telephone, Midcontinent Communications, TDS Telecom, Matrix, Comtech21
OhioAT&T,

CenturyLink,

Frontier Comm.,

Verizon

Birch, BuckeyeTel, Buckye Broadband, Cavalier, Charter Communications, Cincinnati Bell, Comtech21, Cox, Earthlink, Fairpoint, Horizon Telcom Inc., MCTV, Matrix, Ohio Digital Business VoIP, Sage Telecom, Spectrum, TDS Telecom, Wide Open West (WOW!), Windstream,
OklahomaAT&T, CenturyLinkBirch, Windstream, Sage Telecom, Cox, Fairpoint, TDS Telecom, Matrix, LOGIX Communications, Comtech21, Encounter Wireless Communications
OregonCenturyLink, VerizonBirch, Charter Communications, Comcast, Frontier Communications, TDS Telecom, Matrix, TRUSTID, Comtech21
PennsylvaniaCenturyLink, VerizonArmstrong, Atlantic Broadband, Blue Ridge Communications, Cablevision, Cavalier, Citizens Telephone Company of Kecksburg, CloseCall America, Comcast, Consolidated Communications, Frontier Communications, Full Service Network, Ironton Telephone Company, Matrix, North-Eastern Pennsylvania Telephone Company, Palmerton Telephone Company, RCN (Eastern PA Area), Service Electric, South Canaan Telephone, TDS Telecom, Charter Communications, Windstream, Birch, Comtech21
Rhode IslandCenturyLink, VerizonBroadview Networks, CloseCall America, Windstream, Cox, Matrix, Comtech21
South CarolinaAT&T, CenturyLink, Frontier CommunicationsBirch, Atlantic Broadband, Deltacom, Comporium, Frontier Communications, Genesis Telecommunications, Windstream, Charter Communications, Comcast, Hargray, TDS Telecom, Matrix, Waccamaw Telecommunications Systems, Inc.[Farmers Telephone Cooperative], Comtech21
South DakotaCenturyLinkBirch, Santel Communications, Midcontinent Communications, Matrix, Comtech21, Vast Broadband
TennesseeAT&T, CenturyLinkBirch, Deltacom, Windstream, Frontier Communications, EPB Fiber Optics, Charter Communications, TDS Telecom, Ritter Communications, Comcast, Matrix, Comtech21
TexasAT&T, CenturyLink, Frontier CommunicationsBirch, Sage Telecom, Comcast, CloseCall America, Grande Communications, Frontier Communications, ICBS, Charter Communications, Consolidated Communications, Matrix, Windstream, LOGIX Communications, Comtech21
UtahCenturyLinkBresnan Communications, Comcast, Frontier Communications, Windstream, Matrix, UBTA-UBET, Comtech21
VermontCenturyLink, Consolidated Communications (formerly FairPoint)Broadview Networks, Charter Communications, TDS Telecom, Matrix, Comtech21
VirginiaCenturyLink, VerizonBirch, CloseCall America, CenturyLink, Charter, Cox, Fairpoint, Lumos Networks, Shenandoah Telecommunications (Shentel), Windstream, TDS Telecom, Comcast, RCN (Falls Church), Matrix, Bristol Virginia Utilities, Comtech21
WashingtonCenturyLink,

Frontier Communications (formerly Verizon, GTE)

Birch, Comcast, Charter Communications, Fairpoint, Frontier Communications,[10] Hood Canal Communications, Whidbey Telecom, TDS Telecom, Matrix, Comtech21
West VirginiaAT&T, CenturyLink, Frontier CommunicationsArmstrong, Atlantic Broadband, Frontier Communications, Comcast, Matrix, West Virginia Digital Phone, Comtech21
WisconsinAT&T, CenturyLink, TDS TelecomFitTech Hosting, Birch, Sage Telecom, CloseCall America, West Wisconsin Telcom, 24-7 Telcom, Tri-County Communications, Richland-Grant Telephone, Baldwin Telcom, Frontier Communications (Formerly Verizon/L-GTE areas), TDS Telecom, Charter Communications (Statewide), Comcast (Manitowoc), Mediacom, Windstream, NewCore Wireless, Matrix, Comtech21
WyomingCenturyLinkBirch, Charter Communications, Cellular One, Matrix, Silver Star Communications, UBTA-UBET, Union Telephone Company, Comtech21

See also

Notes

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