# The 50 largest Telecommunications companies in Texas

Tamtam tracks 81 Telecommunications companies headquartered in Texas. This list ranks the 50 largest by number of employees on LinkedIn, led by AT&T, Frontier Internet and Metro by T-Mobile. Their median headcount is 493. Half of them were founded in 2001 or later. The most common headquarters are Plano (13), Houston (7) and Dallas (6).

These Texas-based telecommunications companies include large, established firms and mid-sized businesses. They are involved in various aspects of connectivity and network infrastructure. Notable companies include AT&T, a major player connecting people with technology, and Frontier Internet, a large fiber provider. Crown Castle builds and maintains wireless infrastructure, while Ribbon Communications offers communications software and networking solutions. Ceragon Networks specializes in 5G wireless transport solutions, and Fujitsu Network Communications provides digital transformation solutions for network operators.

A significant concentration of these telecommunications companies is found in Dallas, with other headquarters in cities like Houston, Plano, and Richardson. This indicates a strong regional hub for the telecommunications industry in Texas, encompassing a range of services from consumer-focused wireless to enterprise-level network solutions.

🇺🇸 Texas · 50 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [AT&T](https://www.tamtam.ai/c/at-and-t) (att.com)<br>Innovative company connecting people with technology to create a seamless, better life through network, products, services, and passionate employees | Telecommunications | 🇺🇸 Dallas | 193,793 |  |
| 2 | [Frontier Internet](https://www.tamtam.ai/c/frontier-internet) (frontier.com)<br>Largest pure-play fiber provider in the U.S., delivering blazing-fast broadband connectivity to millions of consumers and businesses nationwide. | Telecommunications | 🇺🇸 Dallas | 12,461 | 1935 |
| 3 | [Metro by T-Mobile](https://www.tamtam.ai/c/metro-by-t-mobile) (metrobyt-mobile.com)<br>The company provides simple and affordable connected solutions for prepaid consumers, prioritizing customer needs with flexible, affordable, and transparent wireless services | Telecommunications | 🇺🇸 Dallas | 6,055 | 1994 |
| 4 | [Ribbon Communications](https://www.tamtam.ai/c/ribbon-communications) (ribboncommunications.com)<br>Provides communications software, IP and optical networking solutions for service providers, enterprises, and critical infrastructure with modern, scalable, and secure technologies. | Telecommunications | 🇺🇸 Plano | 4,092 |  |
| 5 | [Crown Castle](https://www.tamtam.ai/c/crown-castle) (crowncastle.com)<br>Build and maintain wireless infrastructure including towers, small cells, and fiber to support data, technology, and wireless services nationwide. | Telecommunications | 🇺🇸 Houston | 4,086 | 1994 |
| 6 | [Vistance Networks](https://www.tamtam.ai/c/vistance-networks) (vistancenetworks.com)<br>Provides reliable communication technology solutions focused on performance, innovation, and customer-driven value for a dynamic global market. | Telecommunications | 🇺🇸 Richardson | 2,068 |  |
| 7 | [Ceragon Networks](https://www.tamtam.ai/c/ceragon-networks) (ceragon.com)<br>Global leader in 5G wireless transport solutions, providing innovative backhaul and fronthaul services for operators worldwide, increasing efficiency and enhancing customer experience | Telecommunications | 🇺🇸 Richardson | 1,990 | 1996 |
| 8 | [DSI](https://www.tamtam.ai/c/dsi-dallas) (dsisystemsinc.com)<br>Sales enablement partner specializing in consumer and commercial indirect dealer sales, offering sales management, training, marketing, software solutions, engineering, and logistics support | Telecommunications | 🇺🇸 Dallas | 1,903 | 1984 |
| 9 | [ECI Telecom](https://www.tamtam.ai/c/eci-telecom) (rbbn.com)<br>Global communications software and network solutions provider for service providers, enterprises, and critical infrastructure sectors, offering innovative end-to-end solutions for modernizing networks | Telecommunications | 🇺🇸 Plano | 1,513 | 1961 |
| 10 | [Fujitsu Network Communications](https://www.tamtam.ai/c/fujitsu-network-communications) (1finity.com)<br>Provider of digital transformation solutions for network operators worldwide, offering hardware, software, services for cost savings, faster delivery, and improved network performance | Telecommunications | 🇺🇸 Richardson | 1,268 | 1980 |
| 11 | [Flō Networks](https://www.tamtam.ai/c/flo-networks) (flo.net)<br>Flō Networks provides high-performance network services for organizations, offering scalable, transparent architecture for configuring and managing services across networks | Telecommunications | 🇺🇸 El Paso | 1,227 | 2001 |
| 12 | [Aviat Networks](https://www.tamtam.ai/c/aviat-networks) (aviatnetworks.com)<br>A global provider of wireless transport products, services, and support for LTE and 5G broadband networks, serving customers in 170 countries | Telecommunications | 🇺🇸 Austin | 926 | 2007 |
| 13 | [Mobilelink](https://www.tamtam.ai/c/mobilelink) (mobilelinkusa.com)<br>A rapidly growing wireless retailer based in Texas, focused on providing unparalleled customer satisfaction and value to customers nationwide | Telecommunications | 🇺🇸 Sugar Land | 866 | 2005 |
| 14 | [Purple Communications, Inc](https://www.tamtam.ai/c/purple-communications-inc) (zpbettertogether.com)<br>A leading provider of video relay, remote interpreting, and on-site services for Deaf and hard of hearing individuals and organizations | Telecommunications | 🇺🇸 Austin | 835 | 2002 |
| 15 | [Speedcast](https://www.tamtam.ai/c/speedcast) (speedcast.com)<br>Leading communications and IT services provider delivering critical services to various sectors worldwide, offering fully connected systems and innovative technology solutions | Telecommunications | 🇺🇸 Houston | 831 | 1989 |
| 16 | [Office Assistant](https://www.tamtam.ai/c/office-assistant) (officeassistant.com)<br>Office Assistant provides on-demand front office support for small businesses, offering tools and personnel to ensure responsiveness and success | Telecommunications | 🇺🇸 Dallas | 818 |  |
| 17 | [Airspan Networks](https://www.tamtam.ai/c/airspan-networks) (airspan.com)<br>Provider of innovative software and hardware for 5G networks, pioneering in Open RAN solutions for seamless connectivity globally | Telecommunications | 🇺🇸 Plano | 770 | 1992 |
| 18 | [MobileComm Professionals, Inc](https://www.tamtam.ai/c/mobilecomm-professionals-inc) (ust.com)<br>A company partnering with global enterprises for over 20 years, focusing on transformation and providing insights for complex business issues | Telecommunications | 🇺🇸 Richardson | 736 | 2002 |
| 19 | [AppLogic Networks](https://www.tamtam.ai/c/applogic-networks) (applogicnetworks.com)<br>Analyzes application and network data to optimize performance and monetize user experiences, enhancing overall application efficiency and value. | Telecommunications | 🇺🇸 Plano | 631 |  |
| 20 | [AOI](https://www.tamtam.ai/c/aoi) (ao-inc.com)<br>A leading designer and manufacturer of fiber optic networking products, serving cable TV broadband, fiber-to-the-home, and internet data centers markets | Telecommunications | 🇺🇸 Sugar Land | 624 | 1997 |
| 21 | [GENBAND](https://www.tamtam.ai/c/genband) (rbbn.com)<br>A global leader in real-time communications technology, transforming networks to secure IP and cloud-based architectures for highly productive consumer and business communication | Telecommunications | 🇺🇸 Plano | 610 | 1999 |
| 22 | [Nextlink Internet](https://www.tamtam.ai/c/nextlink-internet) (nextlinkinternet.com)<br>Provides high-speed Internet and voice services to residential, business, and government customers in central United States, using fiber optics and fixed wireless technology. | Telecommunications | 🇺🇸 Hudson Oaks | 580 | 2012 |
| 23 | [Lifesize](https://www.tamtam.ai/c/lifesize) (enghousevideo.com)<br>Enghouse Interactive provides omnichannel customer experience and video solutions, enhancing communication for diverse customers with scalable, flexible deployment options. | Telecommunications | 🇺🇸 Austin | 564 |  |
| 24 | [CHR Solutions](https://www.tamtam.ai/c/chr-solutions) (chrsolutions.com)<br>Specializing in enhancing broadband capabilities, offering engineering deployment services, business & billing software solutions, and managed IT services to improve operations and revenue | Telecommunications | 🇺🇸 Houston | 512 | 1937 |
| 25 | [Spectrum Business / Charter](https://www.tamtam.ai/c/spectrum-business-charter) (spectrum.com)<br>Spectrum Business provides tailored Internet, Telephone, and Cable TV solutions to maximize office productivity, offering reliable service with no contracts or hidden fees | Telecommunications | 🇺🇸 Coppell | 493 | 1993 |
| 26 | [Boingo Wireless](https://www.tamtam.ai/c/boingo-wireless) (boingo.com)<br>Leading global provider of cellular and Wi-Fi networks in high-traffic public spaces, pioneering solutions in 5G, CBRS, Wi-Fi 7, private 5G, and Passpoint. | Telecommunications | 🇺🇸 Frisco | 472 | 2001 |
| 27 | [Ezee Fiber](https://www.tamtam.ai/c/ezee-fiber) (ezeefiber.com)<br>Ezee Fiber offers high-speed, reliable internet with local support, symmetrical speeds up to 8 Gig, lifetime pricing, and no contracts | Telecommunications | 🇺🇸 Houston | 469 |  |
| 28 | [Grande Communications Networks LLC](https://www.tamtam.ai/c/grande-communications-networks-llc) (astound.com)<br>A Texas-based broadband communications company providing Internet, TV, and phone services through a high-capacity fiber-optic network with outstanding local support | Telecommunications | 🇺🇸 San Marcos | 445 | 1999 |
| 29 | [EF Johnson Technologies, Inc.](https://www.tamtam.ai/c/ef-johnson-technologies-inc) (efjohnson.com)<br>A Texas-based company specializes in secure communications solutions for first responders, federal government, and industrial organizations to protect and save lives | Telecommunications | 🇺🇸 Irving | 425 | 1923 |
| 30 | [SpectrumVoIP](https://www.tamtam.ai/c/spectrumvoip) (spectrumvoip.com)<br>This company offers advanced cloud telephone solutions, providing convenience, cost-effectiveness, and ease of management for businesses through Cloud VoIP (UCaaS) | Telecommunications | 🇺🇸 Plano | 411 | 2007 |
| 31 | [Rise Internet](https://www.tamtam.ai/c/rise-internet) (risebroadband.com)<br>A leading fixed wireless broadband provider offering high-speed internet and digital voice services to residential and commercial customers in 16 states | Telecommunications | 🇺🇸 Westlake | 395 | 2005 |
| 32 | [LOGIX FIBER NETWORKS](https://www.tamtam.ai/c/logix-fiber-networks) (logix.com)<br>A Texas-based provider of secure fiber-based data and voice services for enterprise and carrier customers, known for outstanding customer service and quick service delivery | Telecommunications | 🇺🇸 Houston | 380 | 1983 |
| 33 | [AT&T Labs, Inc.](https://www.tamtam.ai/c/at-and-t-labs-inc) (att.com)<br>Innovation-driven company focusing on Labs and Research teams to explore and develop groundbreaking ideas Exciting opportunities for career growth | Telecommunications | 🇺🇸 Dallas | 369 | 1885 |
| 34 | [StarTech Networks Inc.](https://www.tamtam.ai/c/startech-networks-inc) (startechnetworks.com)<br>A global engineering and telecom investment company offering network services like planning, deployment, optimization, maintenance, and staffing to telecom operators and OEMs | Telecommunications | 🇺🇸 Plano | 365 | 2008 |
| 35 | [Integer Telecom Services Inc](https://www.tamtam.ai/c/integer-telecom-services-inc) (integertel.com)<br>Integer Telecom Services Inc aims to revolutionize the telecom industry with disruptive technologies, innovative solutions, and a focus on client ROI and growth | Telecommunications | 🇺🇸 Plano | 356 | 2017 |
| 36 | [ZVRS](https://www.tamtam.ai/c/zvrs) (zpbettertogether.com)<br>This company offers top-of-the-line videophone technology with certified interpreters and exclusive features, setting the industry standard for VRS providers | Telecommunications | 🇺🇸 Austin | 353 | 2006 |
| 37 | [SpeedCast (formerly Harris CapRock Communications)](https://www.tamtam.ai/c/speedcast-formerly-harris-caprock-communications) (speedcast.com)<br>A global provider of managed communication solutions for remote environments, specializing in energy, government, and maritime markets Offers reliable, comprehensive IT solutions | Telecommunications | 🇺🇸 Houston | 338 | 1981 |
| 38 | [FiberLight, LLC](https://www.tamtam.ai/c/fiberlight-llc) (fiberlight.com)<br>Specializing in purpose-built fiber networks, this company ignites digital transformations with carrier-grade products engineered for business continuity | Telecommunications | 🇺🇸 Plano | 332 | 2005 |
| 39 | [MD7](https://www.tamtam.ai/c/md7) (md7.com)<br>A global digital infrastructure consultancy offering comprehensive expertise to operators worldwide, emphasizing extreme partnership and personalized approach with diversity and integrity values | Telecommunications | 🇺🇸 Allen | 324 | 2003 |
| 40 | [Verveba Telecom](https://www.tamtam.ai/c/verveba-telecom) (verveba.com)<br>A global provider of telecom engineering services and solutions specializing in wireless deployments, LTE/5G, network testing, RF design, field services, and testing products/software | Telecommunications | 🇺🇸 Richardson | 315 | 2004 |
| 41 | [Lemcon Inc](https://www.tamtam.ai/c/lemcon-inc) (lemcon.net)<br>A leading telecommunications network infrastructure service provider, dedicated to delivering excellent outcomes for customers with a focus on safety, quality, and innovation | Telecommunications | 🇺🇸 Lewisville | 295 | 2000 |
| 42 | [DZS](https://www.tamtam.ai/c/dzs) (dzsi.com)<br>A global leader in broadband connectivity and cloud software, specializing in helping service providers deliver optimal subscriber experiences | Telecommunications | 🇺🇸 Plano | 287 |  |
| 43 | [Kodiak](https://www.tamtam.ai/c/kodiak-plano) (motorolasolutions.com)<br>Leading evolution in mission-critical push-to-talk technology, developing MCPTT Standard, and addressing unique needs of public safety organizations | Telecommunications | 🇺🇸 Plano | 283 | 2003 |
| 44 | [Nexius](https://www.tamtam.ai/c/nexius) (nexius.com)<br>The company provides end-to-end deployment services and smart solutions for cutting-edge technology, focusing on network implementation and satisfying data needs | Telecommunications | 🇺🇸 Frisco | 276 | 2001 |
| 45 | [US Marines Corp](https://www.tamtam.ai/c/us-marines-corp)<br>A telecommunications company located in Plainview, Texas, specialized in providing communication services, likely to a government agency like the US Marines | Telecommunications | 🇺🇸 Plainview | 216 |  |
| 46 | [Scarlet Wireless Inc.](https://www.tamtam.ai/c/scarlet-wireless-inc) (scarletwireless.com)<br>Scarlet Wireless offers services for Wireless OEMs and Operators, specializing in RF and EF&I practices, with global presence for cost-efficient solutions | Telecommunications | 🇺🇸 Addison | 185 |  |
| 47 | [Telaverge Communications](https://www.tamtam.ai/c/telaverge-communications) (telavergecommunications.com)<br>Global provider of communications and technology solutions with strong engineering force in Texas and India, specializing in telecom products and solutions for worldwide operators | Telecommunications | 🇺🇸 Plano | 176 |  |
| 48 | [S4 Communications](https://www.tamtam.ai/c/s4-communications) (s4communications.com)<br>BPO provider in Houston offering call center services to Fortune 500 companies, focusing on financial, telecom, and energy sectors for sales growth | Telecommunications | 🇺🇸 Houston | 176 |  |
| 49 | [Fortress Solutions](https://www.tamtam.ai/c/fortress-solutions) (fortsol.com)<br>Global provider of digital infrastructure deployment and support for expanding business in 5G and IoT space, specializing in telecom repairs and engineering solutions | Telecommunications | 🇺🇸 Plano | 169 | 2002 |
| 50 | [Tive](https://www.tamtam.ai/c/tive-austin) (linkin.bio)<br>The company created a mobile app for the d/Deaf, HOH, and CODA community, providing ASL interpretation and a media platform for communication and connection | Telecommunications | 🇺🇸 Austin | 169 | 2019 |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.

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## The same list elsewhere

- [Telecommunications companies in the world](https://www.tamtam.ai/l/telecommunications-companies-in-the-world) (3,307)
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Source: https://www.tamtam.ai/l/telecommunications-companies-texas