| Verizon Communications | Verizon Communications | employment discrimination | 2011 | EEOC | $20,000,000 |
| AT&T Mobility LLC | AT&T | telecommunications violation | 2014 | MULTI-AG | (*)Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting. $20,000,000 |
| T-Mobile USA, Inc. | T-Mobile US | telecommunications violation | 2021 | FCC | $19,500,000 |
| Universal Pictures | Comcast | privacy violation | 2019 | private lawsuit-federal | $19,225,515 |
| Qwest | Lumen Technologies | accounting fraud or deficiencies | 2007 | AK-AG | $19,000,000 |
| Sprint Nextel Corporation | T-Mobile US | consumer protection violation | 2012 | private lawsuit-federal | $19,000,000 |
| AT&T | AT&T | wage and hour violation | 2013 | private lawsuit-federal | $18,920,325 |
| Time Warner Cable LLC | Charter Communications | consumer protection violation | 2020 | CA-MULTI | $18,800,000 |
| AT&T | AT&T | telecommunications violation | 2013 | FCC | $18,250,000 |
| Charter Communications | Charter Communications | wage and hour violation | 2010 | private lawsuit-federal | $18,000,000 |
| T-Mobile | T-Mobile US | telecommunications violation | 2014 | MULTI-AG | (*)Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting. $18,000,000 |
| AT&T Mobility LLC | AT&T | consumer protection violation | 2010 | private lawsuit-federal | $18,000,000 |
| Verizon Communications | Verizon Communications | telecommunications violation | 2017 | FCC | $17,680,000 |
| T-Mobile | T-Mobile US | telecommunications violation | 2015 | FCC | $17,500,000 |
| Sprint Nextel Corporation | T-Mobile US | consumer protection violation | 2010 | private lawsuit-federal | $17,500,000 |
| AT&T Services | AT&T | wage and hour violation | 2010 | private lawsuit-federal | $17,000,000 |
| DirecTV | AT&T | privacy violation | 2023 | private lawsuit-federal | $17,000,000 |
| DirecTV LLC | AT&T | privacy violation | 2023 | private lawsuit-federal | $16,850,000 |
| CenturyLink | Lumen Technologies | telecommunications violation | 2015 | FCC | $16,000,000 |
| SBC Pension Benefit Plan-Nonbargained Program | AT&T | benefit plan administrator violation | 2008 | private lawsuit-federal | $16,000,000 |
| Verizon Wireless | Verizon Communications | telecommunications violation | 2015 | MULTI-AG | (*)Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting. $16,000,000 |
| Comcast Corporation | Comcast | consumer protection violation | 2010 | private lawsuit-federal | $16,000,000 |
| Sprint Communications Inc. | T-Mobile US | fraud | 2015 | USAO | $15,500,000 |
| Comcast Corporation | Comcast | price-fixing or anti-competitive practices | 2019 | private lawsuit-federal | $15,500,000 |
| Comcast Corporation | Comcast | consumer protection violation | 2019 | private lawsuit-federal | $15,500,000 |
| Frontier Communications | Frontier Communications | consumer protection violation | 2022 | WI-AG | $15,090,000 |
| Straight Path Communications Inc. | Verizon Communications | telecommunications violation | 2017 | FCC | $15,000,000 |
| Verizon | Verizon Communications | wage and hour violation | 2015 | private lawsuit-state | $15,000,000 |
| T-Mobile | T-Mobile US | consumer protection violation | 2020 | MULTI-AG | $15,000,000 |
| Frontier Communications | Frontier Communications | consumer protection violation | 2022 | IN-AG | $15,000,000 |
| Frontier Communications | Frontier Communications | consumer protection violation | 2022 | IN-AG | $15,000,000 |
| AT&T Mobility LLC | AT&T | consumer protection violation | 2022 | private lawsuit-federal | $14,000,000 |
| TracFone Wireless Inc. | Verizon Communications | False Claims Act and related | 2022 | DOJ_CIVIL | $13,400,000 |
| DirecTV | AT&T | consumer protection violation | 2010 | MULTI-AG | $13,250,000 |
| Charter Communications | Charter Communications | utility service violation | 2017 | NY-PSC | $13,000,000 |
| Level 3 Communications, LLC | Lumen Technologies | kickbacks and bribery | 2021 | USAO | $12,772,843 |
| AT&T Operations | AT&T | wage and hour violation | 2012 | private lawsuit-federal | $12,500,000 |
| Sprint Corporation | T-Mobile US | telecommunications violation | 2020 | FCC | $12,240,000 |
| TrellisWare Technologies, Inc. | ViaSat Inc. | False Claims Act and related | 2018 | USAO | $12,177,631 |
| Cingular Wireless | AT&T | consumer protection violation | 2004 | CA-PUC | $12,140,000 |
| Sprint Corp. | T-Mobile US | telecommunications violation | 2015 | MULTI-AG | (*)Penalty amounts marked by an asterisk are ones announced by more than one agency. Parent penalty totals are adjusted to avoid double-counting. $12,000,000 |
| AT&T Mobility LLC | AT&T | consumer protection violation | 2021 | private lawsuit-federal | $12,000,000 |
| Purple Communications | ZVRS | telecommunications violation | 2015 | FCC | $11,900,000 |
| Verizon Business | Verizon Communications | accounting fraud or deficiencies | 2007 | OK-AG | $11,700,000 |
| AT&T Services | AT&T | wage and hour violation | 2008 | private lawsuit-federal | $11,200,000 |
| CenturyLink | Lumen Technologies | consumer protection violation | 2020 | AZ-AG | $10,900,000 |
| Sprint | T-Mobile US | telecommunications violation | 2018 | FCC | $10,000,000 |
| SBC Communications | AT&T | benefit plan administrator violation | 2002 | private lawsuit-federal | $10,000,000 |
| TracFone Wireless, Inc. | Verizon Communications | consumer protection violation | 2015 | CA-PUC | $10,000,000 |
| Ameritech | AT&T | utility service violation | 2000 | WI-PSC | $10,000,000 |
| Verizon Wireless | Verizon Communications | consumer protection violation | 2012 | private lawsuit-federal | $10,000,000 |
| DirecTV | AT&T | environmental violation | 2017 | CA-AG | $9,500,000 |
| DirecTV | AT&T | consumer protection violation | 2023 | private lawsuit-federal | $9,400,000 |
| Purple Communications and CSDVRS | ZVRS | telecommunications violation | 2017 | FCC | $9,116,527 |
| Qwest Corporation | Lumen Technologies | telecommunications violation | 2004 | FCC | $9,000,000 |
| U.S. West Communications Inc. | Lumen Technologies | utility service violation | 2004 | AZ-CC | $9,000,000 |
| Sprint | T-Mobile US | wage and hour violation | 2009 | private lawsuit-federal | $8,771,000 |
| MCI WorldCom Communications, Inc. | Verizon Communications | telecommunications violation | 2002 | CA-AG | $8,500,000 |
| AT&T Technical Services Corp. | AT&T | False Claims Act and related | 2009 | DOJ_CIVIL | $8,266,414 |
| Level 3 Communications, LLC | Lumen Technologies | False Claims Act and related | 2016 | MA-AG | $8,200,000 |
| SBC Ameritech Ohio | AT&T | utility service violation | 2002 | OH-PUC | $8,200,000 |
| BellSouth Telecommunications | AT&T | wage and hour violation | 2013 | private lawsuit-federal | $8,129,675 |
| EchoStar Communications Corp. | DISH Network | employment discrimination | 2005 | EEOC | $8,000,000 |
| AT&T Mobility | AT&T | wage and hour violation | 2016 | private lawsuit-federal | $8,000,000 |
| T-Mobile USA, Inc. | T-Mobile US | wage and hour violation | 2020 | private lawsuit-federal | $8,000,000 |
| Qwest Corporation | Lumen Technologies | utility administrative violation | 2006 | WA-UTC | $7,800,000 |
| AT&T Services | AT&T | telecommunications violation | 2016 | FCC | $7,750,000 |
| Verizon | Verizon Communications | wage and hour violation | 2013 | private lawsuit-federal | $7,721,000 |
| Sprint Corp. | T-Mobile US | telecommunications violation | 2014 | FCC | $7,500,000 |
| Verizon Communications Inc. | Verizon Communications | consumer protection violation | 2013 | private lawsuit-federal | $7,500,000 |
| Verizon | Verizon Communications | telecommunications violation | 2014 | FCC | $7,400,000 |
| Comcast | Comcast | employment discrimination | 2016 | private lawsuit-federal | $7,210,000 |
| AT&T | AT&T | consumer protection violation | 2008 | IL-AG | $7,000,000 |
| BellSouth | AT&T | utility service violation | 2001 | GA-PSC | $7,000,000 |
| AT&T Services Inc. | AT&T | telecommunications violation | 2015 | FCC | $6,900,000 |
| Qwest Communications International | Lumen Technologies | telecommunications violation | 2003 | FCC | $6,500,000 |
| NBCUniversal Inc. | Comcast | wage and hour violation | 2015 | private lawsuit-federal | $6,400,000 |
| AT&T | AT&T | investor protection violation | 2022 | SEC | $6,250,000 |
| TracFone Wireless, Inc | Verizon Communications | telecommunications violation | 2020 | FCC | $6,013,000 |
| Verizon Communication | Verizon Communications | Family and Medical Leave Act | 2010 | CA-CRD | $6,011,190 |
| SBC Communications | AT&T | telecommunications violation | 2002 | FCC | $6,000,000 |
| Pacific Bell Telephone | AT&T | wage and hour violation | 2014 | private lawsuit-state | $6,000,000 |
| South Central Bell | AT&T | employment discrimination | 2003 | private lawsuit-federal | $6,000,000 |
| DISH Network, L.L.C. | DISH Network | consumer protection violation | 2009 | MULTI-AG | $5,900,000 |
| AT&T | AT&T | environmental violation | 2022 | CA-MULTI | $5,900,000 |
| Verizon Telephone Companies | Verizon Communications | telecommunications violation | 2003 | FCC | $5,700,000 |
| DISH Network | DISH Network | consumer protection violation | 2014 | WA-AG | $5,569,500 |
| Sprint Corporation | T-Mobile US | False Claims Act and related | 2003 | DOJ_CIVIL | $5,565,250 |
| Verizon | Verizon Communications | wage and hour violation | 2008 | private lawsuit-state | $5,550,000 |
| Sprint | T-Mobile US | employment discrimination | 2006 | private lawsuit-federal | $5,500,000 |
| DISH Network California Service Corp. | DISH Network | environmental violation | 2022 | CA-MULTI | $5,500,000 |
| AT&T Inc. | AT&T | consumer protection violation | 2013 | private lawsuit-federal | $5,500,000 |
| DIRECTV | AT&T | consumer protection violation | 2005 | FTC | $5,335,000 |
| AT&T Mobility | AT&T | telecommunications violation | 2018 | FCC | $5,250,000 |
| Southwestern Bell | AT&T | employment discrimination | 2012 | private lawsuit-state | $5,120,000 |
| The DirecTV Group and Hughes Network Systems Corporation, Inc. | AT&T | export control violation | 2005 | DDTC | $5,000,000 |
| Verizon | Verizon Communications | telecommunications violation | 2015 | FCC | $5,000,000 |
| AT&T Mobility | AT&T | wage and hour violation | 2014 | private lawsuit-federal | $5,000,000 |
| Verizon | Verizon Communications | wage and hour violation | 2010 | private lawsuit-state | $5,000,000 |
| Comcast Corporation | Comcast | benefit plan administrator violation | 2011 | private lawsuit-federal | $5,000,000 |
| Altice | Altice USA Inc. | consumer protection violation | 2018 | NY-AG | $5,000,000 |
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