Company lists · Data refreshed November 2026

Top 25 Telecom testing and diagnostics companies based in the United States

RevenueBase identified 265 company matches for telecom testing and diagnostics companies associated with the United States as of November 2026 and tracks 21,660 professional contacts across them, including 5,152 with verified work emails. Austin is the largest hub.

This list covers company matches for telecom testing and diagnostics companies associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
265Companies
21,660Contacts tracked
5,152Verified emails
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The 25 largest telecom testing and diagnostics companies based in the United States

Ranked by team size
Top 25 of 265 company matches for telecom testing and diagnostics companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchAustin, TX, United StatesHQ recorded Nov 6, 20265,001-10,0007,474 contacts →

Exact match

“In 2023, Emerson acquired NI and introduced its new Test & Measurement business group.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchLivermore, CA, United StatesHQ recorded Nov 6, 20261,001-5,0001,639 contacts →

Exact match

“FormFactor is a leading provider of essential test and measurement technologies along the full IC life cycle – from characterization, modeling, reliability, and design debug, to…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchAkron, VA, United StatesHQ recorded Nov 6, 2026201-500238 contacts →

Exact match

“MGA is recognized worldwide as one of the leading independent providers of testing services and equipment.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchBaltimore, TX, United StatesHQ recorded Nov 6, 2026201-500195 contacts →

Exact match

“Eurofins Electrical & Electronics North America is a leading testing and certification laboratory, providing a unique array of testing services and accreditations for regulatory…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchIrvine, CA, United StatesHQ recorded Nov 6, 202651-200172 contacts →

Exact match

“THE AUTOMOTIVE AFTERMARKET INDUSTRY LEADER Innova Electronics Corporation is a leading supplier of test equipment and diagnostic reporting for the automotive aftermarket, offering…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchMaple Grove, CA, United StatesHQ recorded Nov 6, 2026201-500143 contacts →

Exact match

“Circuit Check is a leading provider of automated test systems and test fixtures for complex electronic products for the automotive, military/aerospace, medical, industrial, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchFerndale, WA, United StatesHQ recorded Nov 6, 202651-200114 contacts →

Exact match

“Candela Technologies provides test equipment to aid in the testing of network equipment and applications.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchLinthicum Heights, MD, United StatesHQ recorded Nov 6, 202651-200101 contacts →

Exact match

“About Us Net Research (Net) is a global leader in providing service verification tools and telecom management and analysis products.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchFremont, CA, United StatesHQ recorded Nov 6, 2026n/a96 contacts →

Exact match

“Sunrise Telecom® is a registered trademark of VeEX Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchGaithersburg, MD, United StatesHQ recorded Nov 6, 2026201-50081 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchVista, CA, United StatesHQ recorded Nov 6, 202651-20073 contacts →

Exact match

“Tempo® Communications is a trusted name in the utility, communications, and irrigation industries, delivering a full suite of innovative, industry-leading test and measurement…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchCoppell, TX, United StatesHQ recorded Nov 6, 202651-20069 contacts →

Exact match

“Clover Telecom is a leading global supplier of telecom hardware and engineering services for data, wireless, cable, and wireline networks.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchRichardson, TX, United StatesHQ recorded Nov 6, 2026201-50067 contacts →

Exact match

“Delivering world-class electronic test and testability solutions around the globe in semiconductor, systems and functional testing.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchSandy Hook, CT, United StatesHQ recorded Nov 6, 202651-20056 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchPlano, TX, United StatesHQ recorded Nov 6, 202651-20056 contacts →

Exact match

“Axcent Networks is an independently owned and operated telecommunications database engineering firm specializing in traditional TDM, 2G, 3G and 4G/LTE technologies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchWashington, DC, United StatesHQ recorded Nov 6, 202611-5056 contacts →

Exact match

“TeleGeography is a telecommunications data provider delivering trusted, independent analysis for telecom service providers, large enterprises, government agencies, and other…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchFarmington Hills, MI, United StatesHQ recorded Nov 6, 202611-5056 contacts →

Exact match

“DG Technologies (formerly Dearborn Group) is a value leader in vehicle network solutions for in-vehicle and controller area networks providing diagnostic, reprogramming…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchConyers, FL, United StatesHQ recorded Nov 6, 202651-20054 contacts →

Exact match

“Welcome to ProComm Telecommunications, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchChicago, IL, United StatesHQ recorded Nov 6, 202651-20050 contacts →

Exact match

“Polaris Networks is a global solution provider for wireless technologies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchDover, NH, United StatesHQ recorded Nov 6, 202611-5040 contacts →

Exact match

“QA Cafe is a software company located in Dover, NH.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchIndianapolis, IN, United StatesHQ recorded Nov 6, 202651-20039 contacts →

Exact match

“The talented Field engineers at HIVOLT Advanced provide electrical testing and commissioning services in a safe and reliable manner.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchMorgan Hill, CA, United StatesHQ recorded Nov 6, 202651-20035 contacts →

Exact match

“ORBIS Compliance LLC is a strong Strategic and Operational Partner for Manufacturers around the world.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchSimi Valley, CA, United StatesHQ recorded Nov 6, 202651-20034 contacts →

Exact match

“Committed to the mission success of our Military, Aerospace, Commercial, and Medical industry customers for over 30 years, DPACI is your one source qualified to provide a Turn-Key…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchEagleville, TN, United StatesHQ recorded Nov 6, 202611-5030 contacts →

Exact match

“JAG is a telecommunications service company that specializes in TIA Inspections, tower lighting system repairs, and tower and compound maintenance.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchReston, VA, United StatesHQ recorded Nov 6, 202651-20029 contacts →

Exact match

“Founded in 1992, TeleworX is a leading provider of engineering consulting services and innovative software to the entire telecom community.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 265 telecom testing and diagnostics companies based in the United States

See the full list, filter by size, metro and specialty, and access 5,152 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Telecom testing and diagnostics companies based in the United States at a glance

As of Nov 6, 2026
23.8%Verified-email coverage
81.7Average contacts per company
11-50Median size (employees)
3.0%Largest-city concentration · Austin
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
99
11-50
98
51-200
39
201-500
11
501-1,000
8
1,001-5,000
6
5,001-10,000
1
10001+
1

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 265 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “telecom testing and diagnostics companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 5,152 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “telecom testing and diagnostics companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many telecom testing and diagnostics companies are there based in the United States?

RevenueBase identified 265 company matches for telecom testing and diagnostics companies associated with the United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

NI National Instruments tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most telecom testing and diagnostics companies?

Austin leads with 8 company records, followed by Santa Clara (6) and Fremont (5).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 5,152 professional contacts with verified work emails tracked across these 265 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 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 SmartSearch, 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.