Company lists · Data refreshed September 2026

Top 25 Telecommunications testing equipment makers worldwide

Name: Telecommunications testing equipment makers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 427 companies tracked

RevenueBase identified 427 telecommunications testing equipment makers worldwide as of September 2026 and tracks 37,477 professional contacts across them, including 11,697 with verified work emails and 0 with mobile numbers. The United States is the largest market and Sao Paulo the largest hub.

This list covers telecommunications testing equipment makers worldwide, 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. Country and city lists for telecommunications testing equipment makers follow the table.

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

427Companies

37,477Contacts tracked

11,697Verified emails

0Mobile numbers

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The 25 largest telecommunications testing equipment makers worldwide

Ranked by team size

Top 25 of 427 telecommunications testing equipment makers worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to telecommunications testing equipment makers: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Keysight Technologies	Indirect evidence	Santa Rosa, CA, United StatesHQ checked Sep 19, 2026	10001+	11,668 contacts →
	Indirect evidence “Keysight empowers innovators to explore, design, and bring world-changing technologies to life.” Source: RevenueBase Database · checked Sep 19, 2026
2	NI National Instruments	Indirect evidence	Austin, TX, United StatesHQ checked Sep 19, 2026	5,001-10,000	7,081 contacts →
	Indirect evidence “In 2023, Emerson acquired NI and introduced its new Test & Measurement business group.” Source: RevenueBase Database · checked Sep 19, 2026
3	Gaotek INC	Indirect evidence	New York, NY, United StatesHQ checked Sep 19, 2026	n/a	4,999 contacts →
	Indirect evidence “GAO Tek is a member of GAO Group of Companies, headquartered in New York City, USA & Toronto, Canada with a strong global presence.” Source: RevenueBase Database · checked Sep 19, 2026
4	Tektronix	Indirect evidence	Beaverton, OR, United StatesHQ checked Sep 19, 2026	1,001-5,000	3,355 contacts →
	Indirect evidence “We design and manufacture test and measurement solutions to break through the walls of complexity and accelerate global innovation.” Source: RevenueBase Database · checked Sep 19, 2026
5	Fluke Corporation	Indirect evidence	Everett, WA, United StatesHQ checked Sep 19, 2026	1,001-5,000	2,931 contacts →
	Indirect evidence “Fluke Corporation, a wholly owned subsidiary of Fortive Corporation (NYSE: FTV), is the world leader in the manufacture, distribution and service of electronic test tools and…” Source: RevenueBase Database · checked Sep 19, 2026
6	Teledyne Lecroy	Indirect evidence	Chestnut Ridge, NY, United StatesHQ checked Sep 19, 2026	201-500	473 contacts →
	Indirect evidence “Teledyne LeCroy is a leading manufacturer of advanced oscilloscopes, protocol analyzers, and other test instruments that verify performance, validate compliance, and debug complex…” Source: RevenueBase Database · checked Sep 19, 2026
7	Spherea Group	Indirect evidence	Toulouse, FranceHQ checked Sep 19, 2026	1,001-5,000	432 contacts →
	Indirect evidence “Spherea Group: A 60-Year Legacy Since 1965, the Spherea Group has built a strong legacy in test and quality solutions, rooted in the electronics activities of Aerospatiale, where…” Source: RevenueBase Database · checked Sep 19, 2026
8	Meritech	Indirect evidence	Mohali, IndiaHQ checked Sep 19, 2026	201-500	204 contacts →
	Indirect evidence “A leading manufacturer of Mobile Network T&M, Network Optimization, LPWA IoT and IT Solutions.” Source: RevenueBase Database · checked Sep 19, 2026
9	Pico Technology	Partial evidence	Eaton Socon, United KingdomHQ checked Sep 19, 2026	51-200	154 contacts →
	Partial evidence “Pico Technology is a leading global provider of high-performance oscilloscopes, diagnostic equipment, data loggers, and signal generators.” Source: RevenueBase Database · checked Sep 19, 2026
10	Cascade Microtech	Indirect evidence	Beaverton, OR, United StatesHQ checked Sep 19, 2026	1,001-5,000	151 contacts →
	Indirect evidence “Cascade Microtech, Inc, was acquired by FormFactor in 2016.” Source: RevenueBase Database · checked Sep 19, 2026
11	Calnex Solutions	Indirect evidence	Linlithgow, United StatesHQ checked Sep 19, 2026	51-200	142 contacts →
	Indirect evidence “Calnex Solutions designs, produces and markets test instrumentation and solutions for network synchronization and network emulation, enabling our customers to validate the…” Source: RevenueBase Database · checked Sep 19, 2026
12	Candela Technologies, INC	Strong evidence	Ferndale, WA, United StatesHQ checked Sep 19, 2026	51-200	115 contacts →
	Strong evidence “Candela Technologies provides test equipment to aid in the testing of network equipment and applications.” Source: RevenueBase Database · checked Sep 19, 2026
13	Arsitec	Indirect evidence	Sao Paulo, BrazilHQ checked Sep 19, 2026	11-50	105 contacts →
	Indirect evidence “A ARSITEC É uma empresa 100% brasileira, com atuação voltada para o segmento de telecomunicações.” Source: RevenueBase Database · checked Sep 19, 2026
14	Telekonnectors Limited	Indirect evidence	Chennai, IndiaHQ checked Sep 19, 2026	51-200	105 contacts →
	Indirect evidence “Telekonnectors Limited (TLK), a pioneer in communication headsets, analog phones and copper cable testers, started in 1986 responding to a request from Government of India to…” Source: RevenueBase Database · checked Sep 19, 2026
15	NET Research	Indirect evidence	Linthicum Heights, MD, United StatesHQ checked Sep 19, 2026	51-200	101 contacts →
	Indirect evidence “About Us Net Research (Net) is a global leader in providing service verification tools and telecom management and analysis products.” Source: RevenueBase Database · checked Sep 19, 2026
16	Maxeye Technologies	Indirect evidence	Bengaluru, IndiaHQ checked Sep 19, 2026	51-200	100 contacts →
	Indirect evidence “MaxEye Technologies is a technology-driven Test & Measurement company, founded in 2011, with operations in Bengaluru, Chennai and Pune in India.” Source: RevenueBase Database · checked Sep 19, 2026
17	Netally	Indirect evidence	Colorado Springs, CO, United StatesHQ checked Sep 19, 2026	51-200	92 contacts →
	Indirect evidence “Since 1993, we have been the #1 ally of network professionals worldwide.” Source: RevenueBase Database · checked Sep 19, 2026
18	Sunrise Telecom	Indirect evidence	Fremont, CA, United StatesHQ checked Sep 19, 2026	n/a	89 contacts →
	Indirect evidence “Sunrise Telecom® is a registered trademark of VeEX Inc.” Source: RevenueBase Database · checked Sep 19, 2026
19	GL Communications INC	Indirect evidence	Gaithersburg, MD, United StatesHQ checked Sep 19, 2026	201-500	84 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
20	Taurus Powertronics PVT LTD	Indirect evidence	Bangalore, IndiaHQ checked Sep 19, 2026	51-200	79 contacts →
	Indirect evidence “Taurus Powertronics Pvt Ltd was established in 1985 as a part of the Taurus group of companies, whose head office is in Bangalore, India.Taurus has established itself, over the…” Source: RevenueBase Database · checked Sep 19, 2026
21	Clover Telecom	Indirect evidence	Coppell, TX, United StatesHQ checked Sep 19, 2026	51-200	76 contacts →
	Indirect evidence “Clover Telecom is a leading global supplier of telecom hardware and engineering services for data, wireless, cable, and wireline networks.” Source: RevenueBase Database · checked Sep 19, 2026
22	Directique	Partial evidence	Paris, FranceHQ checked Sep 19, 2026	51-200	74 contacts →
	Partial evidence “Directique is the reference in telecommunication quality control, and digital services QoS : Quality of Service, Quality of Experience, Performance, Process Validation, Service…” Source: RevenueBase Database · checked Sep 19, 2026
23	Atlantis Intelligence Limited	Indirect evidence	Gautam Buddha Nagar, IndiaHQ checked Sep 19, 2026	501-1,000	72 contacts →
	Indirect evidence “Atlantis Intelligence is a pioneering technology solutions provider transforming the global telecom ecosystem through innovation, automation, and transparency.” Source: RevenueBase Database · checked Sep 19, 2026
24	Tempo Communications, INC	Indirect evidence	Vista, CA, United StatesHQ checked Sep 19, 2026	51-200	69 contacts →
	Indirect evidence “Tempo® Communications is a trusted name in the utility, communications, and irrigation industries, delivering a full suite of innovative, industry-leading test and measurement…” Source: RevenueBase Database · checked Sep 19, 2026
25	Audio Precision	Indirect evidence	Beaverton, OR, United StatesHQ checked Sep 19, 2026	51-200	66 contacts →
	Indirect evidence “For over forty years, AP has offered high-performance audio analyzers, accessories and applications to help engineers worldwide design, validate, characterize and manufacture…” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: telecommunications testing equipment makers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names telecommunications testing equipment makers.
Partial evidence: Its own public description names part of telecommunications testing equipment makers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name telecommunications testing equipment makers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 427 telecommunications testing equipment makers worldwide

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Telecommunications testing equipment makers worldwide at a glance

As of Sep 19, 2026

31.2%Verified-email coverage

87.8Average contacts per company

11-50Median size (employees)

2.6%Largest-city concentration · Sao Paulo

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

135

11-50

176

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 testing equipment makers, 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.
Coverage: 6 countries, largest first: the United States, India, the United Kingdom, Germany, Brazil, France. Country and city lists for telecommunications testing equipment makers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “telecommunications testing equipment makers”. 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 testing equipment makers), 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 testing equipment makers, and records with no verified work email.
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, 11,697 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.

Telecommunications testing equipment makers by location

6 lists · largest first

Every Telecommunications testing equipment makers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 testing equipment makers, 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 testing equipment makers are there worldwide?

RevenueBase identified 427 telecommunications testing equipment makers worldwide 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?

Keysight Technologies, headquartered in Santa Rosa, tops this list with the largest team on record.

Which country has the most telecommunications testing equipment makers?

The United States leads with 179 companies, followed by India (90) and the United Kingdom (50). Every telecommunications testing equipment makers list by country and city is linked on this page.

Which city has the most telecommunications testing equipment makers?

Sao Paulo leads with 11 headquartered companies, followed by Bangalore (10) and New Delhi (9).

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 11,697 verified decision-maker contacts tracked across these 427 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.