List of United States telephone companies

Regional Bell operating companies in the United States

• 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: Connecticut, 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, Utah, Washington, Wyoming
• Fairpoint: Maine, New Hampshire, and Vermont. (purchased from Verizon)
• Frontier Communications: West Virginia
  • Became a RBOC in 2010 when it purchased landlines in West Virginia from Verizon
  • In 2013 purchased landlines in Connecticut from AT&T

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 local exchanges in 33 states.
• Frontier Communications, in addition to its role as the RBOC for West Virginia, now serves mainly rural 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.
• FairPoint, in addition to access lines in Maine, New Hampshire, and Vermont, in Northern New England, also serves rural areas in 15 other states.
• Claro Puerto Rico, which serves every exchange in Puerto Rico, has been owned by the international telecommunications giant América Móvil since in 2007.
• Cincinnati Bell, which serves the greater Cincinnati area, was not included in the Bell System breakup of 1984 because the former AT&T held only a minority stake in that company.
• Hawaiian Telcom, originally part of GTE before its merger with Verizon; Verizon sold their Hawaiian assets to The Carlyle Group in 2005
• 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.

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

Regional telephone companies and VOIP providers by state

This is a list of telephone companies of the United States.

State	Regional Bell operating company (RBOC)[1]	Other telephone companies
Alabama	AT&T, CenturyLink[2]	Birch Communications, Deltacom, Windstream, Fairpoint, Frontier Communications, Time Warner Cable, Charter, Bright House Networks, TDS Telecom, Matrix
Alaska	AT&T, CenturyLink[3]	Alascom, Alaska Power and Telephone Company, Anchorage Telephone Utility (ATU), General Communication, Matrix, Cordova Telephone Cooperative
Arizona	AT&T, CenturyLink	Cox, Frontier Communications, Matrix, Nextiva, Windstream, TDS Telecom
Arkansas	AT&T, CenturyLink	Birch, Sage Telecom, Windstream, Charter, Cox, Ritter Communications, TDS Telecom, Matrix, Level 3 communications
California	AT&T, CenturyLink, Frontier Communications	Birch, Carolina Digital Phone,[4] Comcast, Sage Telecom, Sonic.net, Blue Casa, Windstream, Frontier Communications, Time Warner Cable, Charter, Pacific Telephone Company, Cox, Bright House Networks, TDS Telecom, Matrix, TelePacific Communications, TCAST Communications, Wiline Internet And Voice
Colorado	CenturyLink	Bresnan Communications, Comcast, FairPoint, Windstream, TDS Telecom, Matrix
Connecticut	CenturyLink, Frontier (formerly AT&T)[5]	Broadview Networks, Sage Telecom, Comcast, Windstream, Charter, Cox, Cablevision, Matrix, LinkUP Broadband
Delaware	CenturyLink, Verizon	Birch, Broadview Networks, Carolina Digital Phone,[4] CloseCall America, Atlantic Broadband, Cavalier Telephone, Comcast, Matrix
District of Columbia	AT&T, CenturyLink, Verizon	Broadview Networks, Carolina Digital Phone,[4] Cavalier, RCN, Windstream, Matrix
Florida	AT&T, CenturyLink, Frontier Communications	FracTEL LLC, Birch, Carolina Digital Phone, VoiceOnyx Business Phone Service, Nettalk Inc. USA, Cavalier, Northlake Telecom, CloseCall America, Access Integrated Networks, Comcast, Deltacom, Engage Communications, Fairpoint, Windstream, Frontier Communications, Time Warner Cable, Cox, Bright House Networks, Atlantic Broadband, TDS Telecom, Matrix, Sling Broadband, Telovations, Star2Star Communications, LIghtspeed Voice
Georgia	AT&T, CenturyLink	Birch, Carolina Digital Phone,[4] Cavalier, Cox, Comcast, Deltacom, Windstream, Frontier Communications, Charter, Cox, Hargray, TDS Telecom, Matrix
Hawaii	Hawaiian Telcom	Servpac, Sandwich Isles Communications, tw telecom, Time Warner Cable
Idaho	AT&T, CenturyLink	Level 3, Frontier Communications, Cox, TDS Telecom, Matrix
Illinois	AT&T, CenturyLink, Verizon	Birch, Carolina Digital Phone,[4] Cavalier, Sage Telecom, CloseCall America, Consolidated Communications, Comcast, Fairpoint, Mediacom, RCN (Chicago Area), Windstream, Frontier Communications, Charter, TDS Telecom, NewCore Wireless, Matrix, RangaTel
Indiana	AT&T, CenturyLink, Verizon	Birch, Carolina Digital Phone,[4] Zentality Communications, Sage Telecom, Comcast, Cincinnati Bell, CloseCall America, Frontier Communications, Charter, Bright House Networks, Windstream, TDS Telecom, Matrix, Time Warner Cable
Iowa	CenturyLink	Birch, Iowa Telecom, Windstream, Frontier Communications, Mediacom, Matrix, NewCore Wireless
Kansas	CenturyLink	Birch, Carolina Digital Phone,[4] Sage Telecom, Rural Telephone, CloseCall America, Cox, Fairpoint, Matrix
Kentucky	AT&T, CenturyLink, Verizon	Birch, Brandenburg Telephone Company, Cincinnati Bell, Carolina Digital Phone,[4] Windstream, TDS Telecom, Matrix, Time Warner Cable
Louisiana	AT&T, CenturyLink	Birch, Cavalier, Access Integrated Networks, Deltacom, Windstream, Time Warner Cable, Charter, Cox, Matrix
Maine	FairPoint (formerly Verizon)	Broadview Networks, Comcast, CloseCall America, FairPoint, Lincolnville Telephone Company, Windstream, Time Warner Cable, TDS Telecom, Matrix
Maryland	CenturyLink, Verizon	Birch, Broadview Networks, Comcast, Cavalier, CloseCall America, Armstrong, Windstream, Atlantic Broadband, PanTerra Networks, RCN (Montgomery County), Matrix
Massachusetts	CenturyLink, Verizon	Birch, Broadview Networks, DSCI Corp., Comcast, CloseCall America, RCN (Boston Area), Windstream, Time Warner Cable, Charter, Matrix
Michigan	CenturyLink, AT&T	Birch, 123Net, Sage Telecom, Carolina Digital Phone,[4] Cavalier, CloseCall America, TDS Metrocom, Westphalia Telephone Company, Lennon Telephone Company, MichTel, Frontier Communications, Charter, Bright House Networks, Windstream, Matrix, TelNet Worldwide
Minnesota	CenturyLink	Birch, Comcast, Sage Telecom, Frontier Communications, Charter, Midcontinent Communications, Windstream, TDS Telecom, Matrix, NewCore Wireless, PanTerra Networks, Integra Telecom, Mediacom
Mississippi	AT&T, CenturyLink	Birch, Cavalier, Comcast, Deltacom, Windstream, Frontier Communications, MegaGate Broadband, Time Warner Cable, TDS Telecom, Matrix
Missouri	AT&T, CenturyLink	Big River Telephone Company, Birch, Carolina Digital Phone,[4] Windstream, Sage Telecom, KLM Telephone Company, Charter, FairPoint, TDS Telecom, Matrix
Montana	CenturyLink	Birch, Optimum Voice, Frontier Communications, Matrix
Nebraska	AT&T, CenturyLink	Birch, Windstream, Frontier Communications, Charter, Cox, Midcontinent Communications, Matrix
Nevada	AT&T, CenturyLink, Verizon	Frontier Communications, CC Communications, Charter, Cox, Matrix, Telecom North America, TelePacific Communications
New Hampshire	CenturyLink, FairPoint (formerly Verizon)	Broadview Networks, CloseCall America, Fairpoint, Bretton Woods Telephone, Dixville Telephone Company, Dunbarton Telephone Company, Granite State Communications, TDS Telecom, Windstream, Time Warner Cable, Matrix, Union Telephone Co, Northland Telephone Co[6]
New Jersey	CenturyLink, Verizon	Birch, Broadview Networks, Cavalier, CloseCall America, Covista Communications, Windstream, Time Warner Cable, Cablevision, Comcast, Service Electric, Matrix
New Mexico	CenturyLink	Birch, Windstream, Frontier Communications, Matrix
New York	CenturyLink, Verizon	Birch, Broadview Networks, Carolina Digital Phone,[4] Cavalier, CloseCall America, Pure Minutes Mobile, Frontier Communications, Armstrong, Fairpoint, Windstream, Frontier Communications, Time Warner Cable, Cablevision, OVETEL Charter, Atlantic Broadband, TDS Telecom, Finger Lakes Technologies Group, RCN (Manhattan and Queens), Matrix, The Flat Planet Phone Company
North Carolina	AT&T, CenturyLink	Birch, Carolina Digital Phone,[4] Cavalier, Deltacom, Frontier Communications, Windstream, Time Warner Cable, Charter, ATMC, TDS Telecom, Matrix, North State Communications
North Dakota	CenturyLink	Birch, Dickey Rural Communications, Bek Telephone, Consolidated Telephone, Midcontinent Communications, TDS Telecom, Matrix
Ohio	AT&T, CenturyLink, Verizon	Birch, BuckeyeTel, Sage Telecom, Cavalier, CloseCall America, Cincinnati Bell, Ohio Digital Business VoIP, Windstream, Fairpoint, Frontier Communications, Time Warner Cable, Cox, TDS Telecom, Matrix, Horizon Telcom, Inc., Wide Open West (WOW!)]
Oklahoma	AT&T, CenturyLink	Birch, Windstream, Sage Telecom, Time Warner Cable, Cox, Fairpoint, TDS Telecom, Matrix, LOGIX Communications
Oregon	CenturyLink, Verizon	Birch, Charter, Comcast, Frontier Communications, TDS Telecom, Matrix, TRUSTID
Pennsylvania	CenturyLink, Verizon	Birch, Cavalier, Citizens Telephone Company of Kecksburg, CloseCall America, Consolidated Communications, Comcast, Armstrong, RCN (Eastern PA Area), South Canaan Telephone, Windstream, North-Eastern Pennsylvania Telephone Company, Frontier Communications, Time Warner Cable, Atlantic Broadband, Blue Ridge Communications, Cablevision, TDS Telecom, Service Electric, Matrix, Palmerton Telephone Company, Ironton Telephone Company
Rhode Island	CenturyLink, Verizon	Broadview Networks, CloseCall America, Windstream, Cox, Matrix
South Carolina	AT&T, CenturyLink	Birch, Carolina Digital Phone,[4] Atlantic Broadband, Deltacom, Comporium, Frontier Communications, Genesis Telecommunications, Windstream, Time Warner Cable, Charter, Hargray, TDS Telecom, Matrix, Waccamaw Telecommunications Systems, Inc.[Farmers Telephone Cooperative]
South Dakota	CenturyLink	Birch, Santel Communications, Midcontinent Communications, Matrix
Tennessee	AT&T, CenturyLink	Birch, Carolina Digital Phone,[4] Deltacom, Windstream, Frontier Communications, Charter, TDS Telecom, Ritter Communications, Comcast, Matrix
Texas	AT&T, CenturyLink, Frontier Communications	Birch, Sage Telecom, Comcast, CloseCall America, Grande Communications, Windstream, ICBS, Time Warner Cable, Charter, Consolidated Communications, Matrix, LOGIX Communications
Utah	CenturyLink	Bresnan Communications, Comcast, Frontier Communications, Windstream, Matrix, UBTA-UBET
Vermont	CenturyLink, Fairpoint (formerly Verizon)	Broadview Networks, Fairpoint, Charter, TDS Telecom, Matrix
Virginia	CenturyLink, Verizon	Birch, Carolina Digital Phone,[4] CloseCall America, CenturyLink, Charter, Cox, Fairpoint, Lumos Networks, Shenandoah Telecommunications (Shentel), Windstream, TDS Telecom, Comcast, RCN (Falls Church), Matrix, Bristol Virginia Utilities
Washington	CenturyLink	Birch, Comcast, Charter, Fairpoint, Hood Canal Communications, Whidbey Telecom, TDS Telecom, Matrix
West Virginia	AT&T, CenturyLink, Verizon	Armstrong, Atlantic Broadband, Carolina Digital Phone,[4] Frontier Communications, Time Warner Cable, Comcast, Matrix, West Virginia Digital Phone
Wisconsin	AT&T, CenturyLink, Verizon	Birch, Sage Telecom, CloseCall America, West Wisconsin Telcom, 24-7 Telcom, Tri-County Communications, Richland-Grant Telephone, Baldwin Telcom, Frontier Communications, TDS Telecom, Time Warner Cable, Charter, Windstream, NewCore Wireless, Matrix
Wyoming	CenturyLink	Birch, Bresnan Communications, Cellular One, Matrix, Silver Star Communications, UBTA-UBET, Union Telephone Company

See also

• Lists of public utilities

Notes

1. "CenturyLink – Tariffs Search Documents". centurylink.com.
2. http://www.centurylink.com/Pages/AboutUs/CompanyInformation/CompanyStats/
3. Century has not been in Alaska since about 1998 when it was purchased by a company that shortly afterwards changed its name from PTI to Alaska Communications (ACS).
4. "VoIP, Cloud based Telephone, SIP Trunks and Digital Phone". Carolina Digital Phone.
5. "AT&T to sell Connecticut wireline assets to Frontier for $2 billion". Reuters.
6. "Companies Regulated by or Registered with NHPUC". New Hampshire Public Utilities Commission. Retrieved 2010-12-01.