Company lists · Data refreshed September 2026

Top 25 Telecommunications companies with research centers based in the United States

RevenueBase identified 721 telecommunications companies with research centers headquartered in the United States as of September 2026 and tracks 272,078 professional contacts across them, including 58,096 with verified work emails. New York is the largest hub.

This list covers telecommunications companies with research centers headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review
721Companies
272,078Contacts tracked
58,096Verified emails
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The 25 largest telecommunications companies with research centers based in the United States

Ranked by team size
Top 25 of 721 telecommunications companies with research centers based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to telecommunications companies with research centers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceDallas, TX, United StatesHQ checked Sep 19, 202610001+149,412 contacts →

Indirect evidence

“We understand that our customers want an easier, less complicated life.”

Source: RevenueBase Database · checked Sep 19, 2026
2Indirect evidenceBasking Ridge, NJ, United StatesHQ checked Sep 19, 202610001+90,060 contacts →

Indirect evidence

“We get you.”

Source: RevenueBase Database · checked Sep 19, 2026
3Indirect evidenceLittle Rock, AR, United StatesHQ checked Sep 19, 202610001+7,275 contacts →

Indirect evidence

“Windstream and Uniti have merged - Please follow us at Uniti Group, Inc.”

Source: RevenueBase Database · checked Sep 19, 2026
4Partial evidenceQuincy, MA, United StatesHQ checked Sep 19, 20261,001-5,0002,270 contacts →

Partial evidence

“Granite is a dynamic and rapidly growing company serving the exciting and demanding Telecommunications market.”

Source: RevenueBase Database · checked Sep 19, 2026
5Indirect evidenceHuntsville, AL, United StatesHQ checked Sep 19, 20261,001-5,0002,106 contacts →

Indirect evidence

“Adtran, Inc.”

Source: RevenueBase Database · checked Sep 19, 2026
6Indirect evidenceSan Jose, CA, United StatesHQ checked Sep 19, 20261,001-5,0001,959 contacts →

Indirect evidence

“Infinera is now part of Nokia.”

Source: RevenueBase Database · checked Sep 19, 2026
7Indirect evidenceNewark, NJ, United StatesHQ checked Sep 19, 20261,001-5,0001,905 contacts →

Indirect evidence

“We know that you’ll have looked at quite a few company pages but IDT is different.”

Source: RevenueBase Database · checked Sep 19, 2026
8Indirect evidenceHonolulu, HI, United StatesHQ checked Sep 19, 20261,001-5,0001,131 contacts →

Indirect evidence

“Over the last two decades our mission has evolved dramatically.”

Source: RevenueBase Database · checked Sep 19, 2026
9Indirect evidenceMadison, WI, United StatesHQ checked Sep 19, 2026201-500870 contacts →

Indirect evidence

“Telephone and Data Systems, Inc.(NYSE: TDS) provides broadband, video and voice through its TDS Telecom business.”

Source: RevenueBase Database · checked Sep 19, 2026
10Indirect evidenceLos Angeles, CA, United StatesHQ checked Sep 19, 20261,001-5,000542 contacts →

Indirect evidence

“TelePacific company is now TPx Communications.”

Source: RevenueBase Database · checked Sep 19, 2026
11Indirect evidenceStaten Island, United StatesHQ checked Sep 19, 2026201-500529 contacts →

Indirect evidence

“KDDI America is the US subsidiary of KDDI Corporation, a Fortune Global 500 company and is growing communications carrier with a proven track record in Japan and a longstanding…”

Source: RevenueBase Database · checked Sep 19, 2026
12Indirect evidenceSomerset, NJ, United StatesHQ checked Sep 19, 2026201-500432 contacts →

Indirect evidence

“VCTI is a world class leader in network technology.”

Source: RevenueBase Database · checked Sep 19, 2026
13Indirect evidenceQuincy, MA, United StatesHQ checked Sep 19, 20261,001-5,000417 contacts →

Indirect evidence

“At the heart of our company are employees who truly care about customers and ensuring they are connected through Internet, TV, and Voice.”

Source: RevenueBase Database · checked Sep 19, 2026
14Indirect evidenceJonesboro, AR, United StatesHQ checked Sep 19, 2026201-500398 contacts →

Indirect evidence

“At Ritter Communications, we have over a century-long tradition of providing quality residential and business communication services all across Arkansas.”

Source: RevenueBase Database · checked Sep 19, 2026
15Indirect evidenceTempe, AZ, United StatesHQ checked Sep 19, 2026201-500344 contacts →

Indirect evidence

“Innovation for the Last Mile® PCT International, Inc is at the forefront of an evolving industry with superior telecom solutions.”

Source: RevenueBase Database · checked Sep 19, 2026
16Indirect evidenceHagerstown, MD, United StatesHQ checked Sep 19, 202651-200326 contacts →

Indirect evidence

“Antietam Broadband, a privately owned corporation, was founded in 1966.”

Source: RevenueBase Database · checked Sep 19, 2026
17Indirect evidenceHays, KS, United StatesHQ checked Sep 19, 2026201-500319 contacts →

Indirect evidence

“Nex-Tech connects thousands of people and businesses through a robust broadband network with cutting-edge technology.”

Source: RevenueBase Database · checked Sep 19, 2026
18Indirect evidenceRochester, NY, United StatesHQ checked Sep 19, 202651-200260 contacts →

Indirect evidence

“ACC Business was founded on a simple idea: provide small to mid-sized businesses first-rate telecom services with dedicated customer service, all at a competitive price.”

Source: RevenueBase Database · checked Sep 19, 2026
19Indirect evidenceRoseville, CA, United StatesHQ checked Sep 19, 2026501-1,000255 contacts →

Indirect evidence

“SureWest is now Consolidated Communications!”

Source: RevenueBase Database · checked Sep 19, 2026
20Indirect evidenceLittle Rock, AR, United StatesHQ checked Sep 19, 2026201-500212 contacts →

Indirect evidence

“For 45 years, PerfectVision has connected people and businesses worldwide with voice, video, and data technologies.”

Source: RevenueBase Database · checked Sep 19, 2026
21Indirect evidenceAlpharetta, GA, United StatesHQ checked Sep 19, 2026201-500176 contacts →

Indirect evidence

“Engineering Associates provides professional OSP, FTTH, & Wireless engineering design and support services for many of the most sophisticated and demanding users of…”

Source: RevenueBase Database · checked Sep 19, 2026
22Partial evidenceElyria, OH, United StatesHQ checked Sep 19, 2026201-500154 contacts →

Partial evidence

“Multilink is one of the world's leading engineers and product developers of telecommunications network components, servicing the traditional CATV MSO's (Cable Television Multiple…”

Source: RevenueBase Database · checked Sep 19, 2026
23Indirect evidenceKingsport, TN, United StatesHQ checked Sep 19, 202651-200152 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026
24Partial evidenceCentral Point, OR, United StatesHQ checked Sep 19, 202651-200141 contacts →

Partial evidence

“Hunter Communications, a Southern Oregon based Telecommunications Company, CLEC and ISP, was founded in 1994, providing service for local area networks, wide area networks and…”

Source: RevenueBase Database · checked Sep 19, 2026
25Partial evidenceMadison, WI, United StatesHQ checked Sep 19, 202610001+123 contacts →

Partial evidence

“TDS Telecommunications Corp.”

Source: RevenueBase Database · checked Sep 19, 2026

Showing 25 of 721 telecommunications companies with research centers based in the United States

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Telecommunications companies with research centers based in the United States at a glance

As of Sep 19, 2026
21.4%Verified-email coverage
377.4Average contacts per company
11-50Median size (employees)
2.5%Largest-city concentration · New York
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
276
11-50
292
51-200
86
201-500
35
501-1,000
8
1,001-5,000
12
5,001-10,000
1
10001+
8

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 721 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among telecommunications companies with research centers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in the United States whose own description of what they do matches “telecommunications companies with research centers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names telecommunications companies with research centers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among telecommunications companies with research centers, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 58,096 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names telecommunications companies with research centers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many telecommunications companies with research centers are there based in the United States?

RevenueBase identified 721 telecommunications companies with research centers headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

At&t, headquartered in Dallas, tops this list with the largest team on record.

Which city has the most telecommunications companies with research centers?

New York leads with 18 headquartered companies, followed by Atlanta (12) and Dallas (10).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 58,096 verified decision-maker contacts tracked across these 721 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.