Key Stats
Headquarters: Monroe, Louisiana, United States
Founded: 1930 (as Oak Ridge Telephone Company)
Employees: 25,000 (2024)
Market Cap: $10.76 billion (November 2025)
Revenue: $13.1 billion (2024)
Lumen Technologies is an American telecommunications company that provides networking, cloud, security, and communication services to businesses and consumers. The company operates one of the largest fiber optic networks in North America, spanning over 450,000 route miles.
Headquartered in Monroe, Louisiana, Lumen serves enterprise customers, government agencies, and wholesale clients across multiple industries. The company trades on the New York Stock Exchange under the ticker symbol LUMN. Previously known as CenturyLink, the organization rebranded to Lumen Technologies in September 2020.
Lumen Technologies History
1930
William Clarke and Marie Williams purchased Oak Ridge Telephone Company in Louisiana for $500, serving 75 subscribers with a switchboard in their home.
1946
Clarke McRae Williams received the telephone company as a wedding gift from his parents after returning from World War II service.
1968
Company incorporated as Central Telephone and Electronics, with Clarke M. Williams as President and Chairman of the Board.
1971
The company renamed to Century Telephone Enterprises, Inc. and began expanding through acquisitions.
1997
Century Telephone acquired Pacific Telecom for $1.5 billion, adding 1.9 million cell lines and nearly doubling company size.
2009
CenturyTel acquired Embarq Corporation in a $6 billion deal and rebranded as CenturyLink, becoming the largest independent telecom provider in the US.
2011
CenturyLink completed the $12 billion acquisition of Qwest Communications, becoming the third largest telecom company in the United States.
2017
CenturyLink acquired Level 3 Communications in a landmark $25 billion deal, significantly expanding its enterprise fiber network capabilities.
2020
CenturyLink rebranded to Lumen Technologies, reflecting its transformation from a traditional telecom to a technology solutions provider.
2025
Lumen announced agreement to sell Quantum Fiber consumer business to AT&T for $5.75 billion, shifting focus to enterprise customers.
Lumen Technologies Co-founders
William Clarke Williams
Co-purchased Oak Ridge Telephone Company with his wife Marie in 1930 for $500, establishing the foundation that would eventually become Lumen Technologies.
Marie Williams
Co-founder who managed daily operations, writing bills by hand and helping operate the 24-hour switchboard from the family’s front parlor.
Clarke McRae Williams
Received the company as a wedding gift in 1946 and transformed it from a small rural operator into a Fortune 500 telecommunications giant over five decades.
Lumen Technologies Revenue
Lumen Technologies generated $13.1 billion in revenue during 2024, continuing a multi-year decline from peak levels. The company has faced challenges from declining legacy services while investing in growth areas like enterprise networking and cloud connectivity.
Revenue reached its peak following the Level 3 Communications merger in 2017. The company has since divested consumer-focused assets to concentrate on higher-margin enterprise services.
Lumen Technologies Market Cap
Lumen Technologies has a market capitalization of approximately $10.76 billion as of November 2025. The company ranks among the top 2000 most valuable public companies globally according to Forbes.
Market cap experienced significant volatility over the past decade, reaching lows in 2023 before recovering in 2024 and 2025 as investors responded to the company’s turnaround strategy and AI infrastructure investments.
Lumen Technologies Acquisitions
Lumen Technologies has grown through strategic acquisitions spanning nearly a century. The company’s acquisition strategy transformed it from a small rural telephone operator into one of the largest telecommunications providers in the United States.
The 1997 acquisition of Pacific Telecom marked the beginning of major expansion. This $1.5 billion deal added 1.9 million cell lines and nearly doubled the company’s size. Century Telephone grew its network to serve 21 states following this transaction.
Embarq Corporation joined the company in 2009 through a $6 billion stock-for-stock transaction. This deal created CenturyLink and established it as the largest independent telecommunications provider in the nation. The combined entity served 7.5 million access lines across 33 states.
The Qwest Communications acquisition in 2011 represented another transformational moment. The $12 billion merger made CenturyLink owner of US West, a former Regional Bell Operating Company. This deal added 17 million access lines and positioned the company as the third largest telecom provider in the US.
Savvis joined the portfolio in 2011 for $2 billion, bringing cloud infrastructure and hosted IT services capabilities. This acquisition supported expansion into managed hosting and cloud computing markets.
Level 3 Communications represented the largest acquisition in company history. The $25 billion deal closed in November 2017 and dramatically expanded enterprise fiber network capabilities. This merger brought together extensive fiber optic infrastructure and strengthened the company’s position serving large enterprise customers. The combined entity operates one of the most connected networks globally, similar to how Verizon Communications has grown through strategic telecommunications acquisitions.
Lumen Technologies Competitors
Lumen Technologies operates in the competitive telecommunications and enterprise networking market. The company faces competition from national carriers, regional providers, and cloud service companies across its business segments.
| Competitor | Headquarters | Primary Focus |
|---|---|---|
| AT&T | Dallas, Texas | Wireless, Broadband, Enterprise |
| Verizon Communications | New York, New York | Wireless, Fiber, Business Services |
| T-Mobile | Bellevue, Washington | Wireless, 5G Networks |
| Comcast | Philadelphia, Pennsylvania | Cable, Internet, Business Services |
| Frontier Communications | Dallas, Texas | Fiber Broadband, Voice |
| Charter Communications | Stamford, Connecticut | Cable, Internet, Enterprise |
| Cox Communications | Atlanta, Georgia | Cable, Internet, Business |
| Zayo Group | Boulder, Colorado | Fiber Infrastructure, Wholesale |
| Crown Castle | Houston, Texas | Towers, Small Cells, Fiber |
| WideOpenWest (WOW!) | Englewood, Colorado | Internet, Cable, Phone |
FAQs
When was Lumen Technologies founded?
Lumen Technologies traces its origins to 1930 when William Clarke and Marie Williams purchased Oak Ridge Telephone Company in Louisiana. The company incorporated in 1968 and rebranded to Lumen in 2020.
What does Lumen Technologies do?
Lumen Technologies provides networking, cloud, security, and communication services to businesses, government agencies, and wholesale customers. The company operates one of the largest fiber optic networks in North America.
Where is Lumen Technologies headquartered?
Lumen Technologies is headquartered in Monroe, Louisiana, United States. The company has maintained its headquarters in this location since its founding as Oak Ridge Telephone Company in 1930.
Who founded Lumen Technologies?
William Clarke and Marie Williams founded the company in 1930. Their son, Clarke McRae Williams, received the company as a wedding gift in 1946 and expanded it into a Fortune 500 corporation.
What was Lumen Technologies previously called?
Lumen Technologies was previously known as CenturyLink from 2009 to 2020. Before that, the company operated as CenturyTel from 1999 to 2009 and Century Telephone Enterprises from 1971 to 1999.