Company lists · Data refreshed November 2026

Top 25 Fiber optic testing services worldwide

RevenueBase identified 856 company matches for fiber optic testing services worldwide as of November 2026 and tracks 6,161 professional contacts across them, including 1,220 with verified work emails. The United States is the largest market and Shenzhen the largest hub.

This list covers company matches for fiber optic testing services worldwide, 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. Country and city lists for fiber optic testing services follow the table.

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
856Companies
6,161Contacts tracked
1,220Verified emails
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The 25 largest fiber optic testing services worldwide

Ranked by team size
Top 25 of 856 company matches for fiber optic testing services worldwide, 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 matchStuttgart, GermanyHQ recorded Nov 6, 202610001+562 contacts →

Exact match

“Innovating safety and security by creating the intelligent testing solutions that contribute to making the digitalized and connected world a safer place.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchIndiaHQ recorded Nov 6, 202651-200119 contacts →

Exact match

“GL Communications Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact 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
4Exact matchMostoles, SpainHQ recorded Nov 6, 202651-20084 contacts →

Exact match

“CEISLAB, is a Spanish Company with a great deal of experience an technical knowledge in the conformity assessment field, as well as in developing and conducting tests and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchHigh Wycombe, United KingdomHQ recorded Nov 6, 202651-20063 contacts →

Exact match

“With decades of experience, the close-knit team at TREND Networks (Formerly IDEAL Networks) understands the challenges that data cable installers, network technicians and systems…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchMilton Keynes, United KingdomHQ recorded Nov 6, 202651-20062 contacts →

Exact match

“BASEC Group Limited, a part of Kiwa, is a global leader in product testing and certification services for power, energy, data/signal cables and ancillary products, in addition to…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchTaboão Da Serra, BrazilHQ recorded Nov 6, 2026201-50062 contacts →

Exact match

“Integradores por natureza, oferecemos soluções de implantação, manutenção e fiscalização de redes de fibra óptica.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchUnited StatesHQ recorded Nov 6, 202651-20059 contacts →

Exact match

“Founded in 1979, Photon Kinetics is the leading supplier of measurement solutions for the optical fiber, cable and component manufacturing industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchSt Petersburg, FL, RussiaHQ recorded Nov 6, 202651-20048 contacts →

Exact match

“Digital Lightwave® is a registered trademark of VeEX Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchMumbai, IndiaHQ recorded Nov 6, 202611-5046 contacts →

Exact match

“Fastech Telecommunications is a leading provider of telecommunications test and measurement solutions in India.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchCampinas, BrazilHQ recorded Nov 6, 202611-5038 contacts →

Exact match

“FiberWork is a company specialized in Optical Fiber Communication Technology.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchGuatemalaHQ recorded Nov 6, 202651-20037 contacts →

Exact match

“Gomobile es una empresa de Certificación de Calidad de Productos, que nació con la necesidad de apoyar a los agregadores y operadores en la logística de promociones y prueba de…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchParsippany, NJ, United StatesHQ recorded Nov 6, 202611-5035 contacts →

Exact match

“Since 1983 Alliance has provided cable/network installation services to over 2,500 businesses and government agencies throughout the United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchAlcobendas, SpainHQ recorded Nov 6, 202651-20035 contacts →

Exact match

“OPTRAL is a Spanish leader company, founded in 1988, engaged in fibre optic cable design, manufacture and worldwide known companies in the Telecom, Oil & Gas, Industry and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchLodz, PolandHQ recorded Nov 6, 202651-20032 contacts →

Exact match

“OPTOMER company has been operating in the industry since 1992.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchWest Jordan, UT, United StatesHQ recorded Nov 6, 202651-20032 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchLindenhurst, NY, United StatesHQ recorded Nov 6, 202651-20030 contacts →

Exact match

“Transformative, resilient solutions for secure, scalable, and future-proof networks.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchMidrand, South AfricaHQ recorded Nov 6, 202611-5028 contacts →

Exact match

“Our client base is as diverse as the products and services we offer, including 24/7 maintenance cover with a guaranteed time to site for business-critical installations and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchZaragoza, SpainHQ recorded Nov 6, 202611-5027 contacts →

Exact match

“Fibercom ofrece productos y servicios de Fibra óptica en el ámbito de las Telecomunicaciones, cubriendo la totalidad de actividades involucradas en el proceso: ingeniería de redes…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchCarol Stream, IL, United StatesHQ recorded Nov 6, 202651-20027 contacts →

Exact match

“About Fiber Node Services: Our OEM authorized service includes free pick up and drop off of your repair needs, along with the repair, refurbishing, maintenance and calibrations of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchKent, WA, United StatesHQ recorded Nov 6, 202611-5026 contacts →

Exact match

“Fiber optic training courses and hands-on skills training for industry professionals.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBevaix, SwitzerlandHQ recorded Nov 6, 202611-5025 contacts →

Exact match

“Our MISSION: Enhance quality management & production performance in the CABLE industry Our JOB: Check and understand cable performance through ACCURATE TESTING Our OFFERING…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchCounty Dublin, IrelandHQ recorded Nov 6, 202611-5025 contacts →

Exact match

“Established in 2002, Network has been providing dedicated and specialised telecommunications infrastructure services to the commercial, industrial & public sectors.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchOriskany, NY, United StatesHQ recorded Nov 6, 2026201-50025 contacts →

Exact match

“TLC is a registered ISO 9001:2015 fiber optic cable and tubing manufacturing facility.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchRandburg, South AfricaHQ recorded Nov 6, 20261-1025 contacts →

Exact match

“Suppliers of Fibre and Copper Telecom Test Gear and accessories.”

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

Showing 25 of 856 fiber optic testing services worldwide

See the full list, filter by size, metro and specialty, and access 1,220 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Fiber optic testing services worldwide at a glance

As of Nov 6, 2026
19.8%Verified-email coverage
7.2Average contacts per company
11-50Median size (employees)
2.1%Largest-city concentration · Shenzhen
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
409
11-50
273
51-200
111
201-500
38
501-1,000
3
1,001-5,000
4
10001+
3

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for fiber optic testing services are linked below.
What qualifies
Company records worldwide whose business descriptions match “fiber optic testing services” 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. 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 1,220 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.

Fiber optic testing services by location

3 lists · largest first

Every Fiber optic testing services 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 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 “fiber optic testing services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many fiber optic testing services are there worldwide?

RevenueBase identified 856 company matches for fiber optic testing services worldwide 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?

Dekra Digital & Product Solutions tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most fiber optic testing services?

The United States leads with 167 companies, followed by the United Kingdom (80) and Germany (39). Every fiber optic testing services list by country and city is linked on this page.

Which city has the most fiber optic testing services?

Shenzhen leads with 18 company records, followed by New Delhi (8) and Sao Paulo (7).

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 1,220 professional contacts with verified work emails tracked across these 856 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.