Telecommunications companies headquartered in Massachusetts (2026 list)

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.

#	Company	Industry	Headquarters	Employees	Founded
1	Netcracker Technology netcracker.com It is a software company providing critical solutions for service providers, focusing on digital transformation and cloud opportunities worldwide.	Telecommunications	🇺🇸 Waltham	8,935	1993
2	American Tower americantower.com Global provider of digital infrastructure supporting mobile and broadband networks, enabling connectivity, innovation, and bridging digital divides worldwide.	Telecommunications	🇺🇸 Boston	6,111	1995
3	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	🇺🇸 Quincy	2,254	2002
4	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	🇺🇸 West Bridgewater	959	2006
5	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	🇺🇸 Burlington	667	n/a
6	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	🇺🇸 Concord	612	2002
7	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	🇺🇸 Marlborough	544	1990
8	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	🇺🇸 Lexington	526	1996
9	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	🇺🇸 Maynard	403	2009
10	Atlantic Broadband breezeline.com A dedicated team of professionals ensures customers stay connected through Internet, TV, and Voice, prioritizing excellent service and reliability	Telecommunications	🇺🇸 Quincy	399	2003
11	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	🇺🇸 Boston	375	1993
12	BATM Networks telco.com A leading company providing flexible and future-proof edge compute and virtualization solutions for the evolving digital infrastructure transformation	Telecommunications	🇺🇸 Mansfield	367	1972
13	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	🇺🇸 Beverly	361	1987
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14	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	🇺🇸 Hudson	336	1997
15	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	🇺🇸 Boston	329	2010
16	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	🇺🇸 Andover	264	2003
17	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	🇺🇸 Tewksbury	251	1999
18	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	🇺🇸 Marlborough	207	1997
19	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	🇺🇸 Peabody	154	1974
20	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	🇺🇸 New Bedford	153	1992
21	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	🇺🇸 North Andover	151	n/a
22	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	🇺🇸 Waltham	151	2000
23	Owl Labs owllabs.com Innovating work processes with award-winning Meeting Owl Inc, creating a better workplace environment	Telecommunications	🇺🇸 Boston	144	2014
24	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	🇺🇸 Bedford	140	2000
25	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	🇺🇸 Wakefield	125	2016
26	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	🇺🇸 Woburn	39	2001

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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.

Telecommunications companies headquartered in Massachusetts

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