# Telecommunications companies headquartered in Massachusetts
Tamtam tracks 26 Telecommunications companies headquartered in Massachusetts. This list ranks all of them by number of employees on LinkedIn, led by Netcracker Technology, American Tower and Granite Telecommunications. Their median headcount is 361. Half of them were founded in 2000 or later. The most common headquarters are Boston (4), Marlborough (2) and Quincy (2).
These Massachusetts-based telecommunications companies are primarily mid-sized to large firms, with a focus on network infrastructure, connectivity solutions, and digital transformation for service providers and businesses. They include Netcracker Technology, which provides software solutions for digital transformation, and American Tower, a global provider of digital infrastructure. Granite Telecommunications offers high-quality, cost-effective solutions, while Centerline designs and maintains wireless and wireline networks.
A notable pattern is the concentration of these companies in the greater Boston area and its surrounding towns. Many of these firms, such as Netcracker Technology (founded 1993) and American Tower (founded 1995), were established in the 1990s and early 2000s, indicating a significant period of growth and development for the telecommunications sector in the region.
๐บ๐ธ Massachusetts ยท 26 companies ยท Updated Nov 12, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Netcracker Technology](https://www.tamtam.ai/c/netcracker-technology) (netcracker.com)
It is a software company providing critical solutions for service providers, focusing on digital transformation and cloud opportunities worldwide. | Telecommunications | ๐บ๐ธ Waltham | 8,935 | 1993 |
| 2 | [American Tower](https://www.tamtam.ai/c/american-tower) (americantower.com)
Global provider of digital infrastructure supporting mobile and broadband networks, enabling connectivity, innovation, and bridging digital divides worldwide. | Telecommunications | ๐บ๐ธ Boston | 6,111 | 1995 |
| 3 | [Granite Telecommunications](https://www.tamtam.ai/c/granite-telecommunications) (granitenet.com)
A dynamic and rapidly growing company in the telecommunications market, providing high quality, cost-effective solutions to exceed customer expectations | Telecommunications | ๐บ๐ธ Quincy | 2,254 | 2002 |
| 4 | [Centerline](https://www.tamtam.ai/c/centerline) (centerlinecommunications.com)
Designs, builds, and maintains wireless, wireline networks, and infrastructure facilities for Fortune 500 clients across the US Owned by Audax Private Equity | Telecommunications | ๐บ๐ธ West Bridgewater | 959 | 2006 |
| 5 | [One Communications](https://www.tamtam.ai/c/one-communications) (onecommunications.com)
One Communications is a regional provider of telecommunications services focused on delivering solutions for small and mid-sized businesses to help them communicate, save, and grow | Telecommunications | ๐บ๐ธ Burlington | 667 | |
| 6 | [New Horizon Communications](https://www.tamtam.ai/c/new-horizon-communications) (nhcgrp.com)
Provider of integrated communication services, offering network access, management, and overlay technologies to businesses in the USA with a focus on customer support and efficiency | Telecommunications | ๐บ๐ธ Concord | 612 | 2002 |
| 7 | [Communication Technology Services (CTS)](https://www.tamtam.ai/c/communication-technology-services-cts) (cts1.com)
CTS provides custom, carrier-grade in-building and campus connectivity solutions for enterprises and mobile network operators, offering unmatched customer service and vendor-agnostic designs | Telecommunications | ๐บ๐ธ Marlborough | 544 | 1990 |
| 8 | [iBASIS](https://www.tamtam.ai/c/ibasis) (ibasis.com)
A leading communications solutions provider enabling global operators with access, connectivity, and value-added solutions for voice, mobile data, and IoT requirements | Telecommunications | ๐บ๐ธ Lexington | 526 | 1996 |
| 9 | [Acacia](https://www.tamtam.ai/c/acacia) (acacia-inc.com)
A company specializing in optical networking technologies, enabling cloud and service providers to enhance data consumption capabilities through advanced high-speed interconnect products | Telecommunications | ๐บ๐ธ Maynard | 403 | 2009 |
| 10 | [Atlantic Broadband](https://www.tamtam.ai/c/atlantic-broadband) (breezeline.com)
A dedicated team of professionals ensures customers stay connected through Internet, TV, and Voice, prioritizing excellent service and reliability | Telecommunications | ๐บ๐ธ Quincy | 399 | 2003 |
| 11 | [SeaChange International](https://www.tamtam.ai/c/seachange-international) (seachange.com)
A leading provider of Video Delivery Software Solutions, powering cloud and on-premise platforms for over 50 million subscribers worldwide | Telecommunications | ๐บ๐ธ Boston | 375 | 1993 |
| 12 | [BATM Networks](https://www.tamtam.ai/c/batm-networks) (telco.com)
A leading company providing flexible and future-proof edge compute and virtualization solutions for the evolving digital infrastructure transformation | Telecommunications | ๐บ๐ธ Mansfield | 367 | 1972 |
| 13 | [ATN International](https://www.tamtam.ai/c/atn-international) (atni.com)
Provider of digital infrastructure and communication services in rural and remote markets globally, offering advanced wireless, wireline connectivity, and carrier/enterprise communication solutions | Telecommunications | ๐บ๐ธ Beverly | 361 | 1987 |
| 14 | [SENKO Advanced Components, Inc.](https://www.tamtam.ai/c/senko-advanced-components-inc) (senko.com)
design and manufacture precise fiber optic connectors optimized for high-performance, reliable, and easy-to-manage network connectivity in demanding environments | Telecommunications | ๐บ๐ธ Hudson | 336 | 1997 |
| 15 | [Opensignal](https://www.tamtam.ai/c/opensignal) (opensignal.com)
A global provider of independent insights on connectivity experiences, helping operators compete with executive scorecards, engineering analytics, and consumer decision dynamics | Telecommunications | ๐บ๐ธ Boston | 329 | 2010 |
| 16 | [Casa Systems, Inc.](https://www.tamtam.ai/c/casa-systems-inc) (commscope.com)
Develops cloud native 5G core and access solutions for cable and mobile service providers, utilizing software platforms for high performance network scale. | Telecommunications | ๐บ๐ธ Andover | 264 | 2003 |
| 17 | [TriWire Engineering Solutions, Inc.](https://www.tamtam.ai/c/triwire-engineering-solutions-inc) (exportservices.in.net)
A company offering highly skilled customer service professionals, with a focus on providing growth, benefits, and development opportunities for long-term careers | Telecommunications | ๐บ๐ธ Tewksbury | 251 | 1999 |
| 18 | [Maxton](https://www.tamtam.ai/c/maxton) (maxtontech.com)
A leading designer and provider of specialized structures and facilities for top wireless carriers and various industries, offering comprehensive services from design to installation | Telecommunications | ๐บ๐ธ Marlborough | 207 | 1997 |
| 19 | [AES Corporation](https://www.tamtam.ai/c/aes-corporation) (aes-corp.com)
AES Corporation provides patented operator-owned wireless mesh networks for reliable alarm monitoring and rugged security equipment for high-threat environments worldwide | Telecommunications | ๐บ๐ธ Peabody | 154 | 1974 |
| 20 | [Fiber Optic Center](https://www.tamtam.ai/c/fiber-optic-center) (focenter.com)
An international distributor of fiber optic components, equipment, and supplies specializing in helping customers with cable assemblies and fiber optic needs | Telecommunications | ๐บ๐ธ New Bedford | 153 | 1992 |
| 21 | [Maicom](https://www.tamtam.ai/c/maicom) (maicomllc.com)
A fast-growing service provider specialized in serving telecommunications firms, offering installation and maintenance for network sites, data centers, and critical facility environments nationwide | Telecommunications | ๐บ๐ธ North Andover | 151 | |
| 22 | [DSCI, a TelePacific company (now TPx Communications)](https://www.tamtam.ai/c/dsci-a-telepacific-company-now-tpx-communications) (dscicorp.com)
Provider of enterprise-grade unified communications, managed IT, and connectivity services with a focus on customer care, network uptime guarantee, and live-answer technical support | Telecommunications | ๐บ๐ธ Waltham | 151 | 2000 |
| 23 | [Owl Labs](https://www.tamtam.ai/c/owl-labs) (owllabs.com)
Innovating work processes with award-winning Meeting Owl Inc, creating a better workplace environment | Telecommunications | ๐บ๐ธ Boston | 144 | 2014 |
| 24 | [Acme Packet](https://www.tamtam.ai/c/acme-packet) (oracle.com)
Leader in session delivery network solutions, providing secure and reliable delivery of voice, video, data, and unified communications services worldwide | Telecommunications | ๐บ๐ธ Bedford | 140 | 2000 |
| 25 | [Telecom Infra Project](https://www.tamtam.ai/c/telecom-infra-project) (telecominfraproject.com)
A global community driving open, disaggregated, and standards-based technology solutions for high-quality connectivity worldwide, now and in the future | Telecommunications | ๐บ๐ธ Wakefield | 125 | 2016 |
| 26 | [Agiltron, Inc.](https://www.tamtam.ai/c/agiltron-inc) (agiltron.com)
Agiltron is a developer and manufacturer of premium optical and photonic components and systems for communications, sensing, and instrumentation, serving global Fortune 500 companies | Telecommunications | ๐บ๐ธ Woburn | 39 | 2001 |
## 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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- [Telecommunications companies in Florida](https://www.tamtam.ai/l/telecommunications-companies-florida) (55)
- [Telecommunications companies in Virginia](https://www.tamtam.ai/l/telecommunications-companies-virginia) (40)
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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-massachusetts