Company lists · Data refreshed November 2026
Top 25 Fiber optic testing companies worldwide
RevenueBase identified 1,111 company matches for fiber optic testing companies worldwide as of November 2026 and tracks 13,356 professional contacts across them, including 1,497 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 companies 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 companies 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.
The 25 largest fiber optic testing companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 4,904 contacts → | ||||
Exact match “GAO Tek is a member of GAO Group of Companies, headquartered in New York City, USA & Toronto, Canada with a strong global presence.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 275 contacts → | ||||
Exact match “When we first built our reputation as pioneers in fiber optic cable industry, OCC made a commitment to quality, performance, and service.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 204 contacts → | ||||
Exact match “OZ Optics Limited is a leading worldwide supplier of fiber optic products for existing and next-generation optical networks.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 153 contacts → | ||||
Exact match “Fiber Instrument Sales, Inc.(FIS) was founded in 1985 to fulfill the growing need in the communications industry for fiber optic cables and connectivity equipment.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 149 contacts → | ||||
Exact match “West Coast Optilinks (A division of West Coast Paper Mills Ltd.), belongs to a USD 700 Million fast growing Industrial business house “S.K.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 119 contacts → | ||||
Exact match “GL Communications Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 113 contacts → | ||||
Exact match “Amphenol Fiber Systems International (AFSI) is a full service fiber optic company specializing in the fabrication and manufacture of fiber optic connectivity products and systems.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 107 contacts → | ||||
Exact match “FNS performs all aspects of aerial and underground construction, OSP maintenance, fiber splicing and testing, business fiber installation, fiber relocates, damaged fiber…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 96 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 | |||||
| 10 | 89 contacts → | ||||
Exact match “Fiber Optic Center, Inc,(FOC), is an international distributor of fiber optic components, equipment and supplies and the industry connection to the most innovative optical…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 63 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 | |||||
| 12 | 62 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 | |||||
| 13 | 59 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 | |||||
| 14 | 54 contacts → | ||||
Exact match “INNO INSTRUMENT is one of the reputed global suppliers of various equipment to telecommunications industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 52 contacts → | ||||
Exact match “ETK Kablo, whichs main principle is quality, is founded in 1979 in Istanbul, Türkiye to manufacture telephone cables.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 46 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 | |||||
| 17 | 43 contacts → | ||||
Exact match “Sumix designs, develops and manufactures high-end test equipment for fiber optic industry, interferometers and inspection probes, industrial USB 3.0 cameras, USB 2.0 cameras and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 42 contacts → | ||||
Exact match “SEDI-ATI by Fiber Optics Group has been a subsidiary of Fiber Optics Group (FOG) since 2023.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 39 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 38 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 | |||||
| 21 | 37 contacts → | ||||
Exact match “IFOTEC, c’est l’alliance entre la maîtrise des fibres optiques et des technologies électroniques de communication.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 36 contacts → | ||||
Exact match “Taihan Fiberoptics co, Ltd.[KOSDAQ: 010170], which is specialized in manufacturing optical fiber, fiber optic cables and accessories.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 35 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 | |||||
| 24 | 34 contacts → | ||||
Exact match “Glasfaserausbau, Wartung und Reparaturen, Bau.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 33 contacts → | ||||
Exact match “VH Fibre Optics is a specialist passive fibre optic solutions provider.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “fiber optic testing companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 1,111 fiber optic testing companies worldwide
See the full list, filter by size, metro and specialty, and access 1,497 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Fiber optic testing companies worldwide at a glance
As of Nov 6, 2026Companies by employee count
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 companies are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “fiber optic testing 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. 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 1,497 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 companies by location
5 lists · largest firstEvery Fiber optic testing companies 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 companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many fiber optic testing companies are there worldwide?
RevenueBase identified 1,111 company matches for fiber optic testing companies 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?
Gaotek INC 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 companies?
The United States leads with 208 companies, followed by the United Kingdom (79) and France (60). Every fiber optic testing companies list by country and city is linked on this page.
Which city has the most fiber optic testing companies?
Shenzhen leads with 47 company records, followed by New Delhi (8) and Shanghai (8).
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 1,497 professional contacts with verified work emails tracked across these 1,111 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.
Ready to reach these companies? Verified emails and direct dials for all 1,111 fiber optic testing companies worldwide. Start with a free account, no credit card.
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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.
More company lists
Company intelligence · public preview
Top 25 fiber optic testing companies worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 1,111 matching company records for fiber optic testing companies worldwide, with 13,356 tracked contacts and 1,497 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 fiber optic testing companies worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Gaotek INCgaotek.comHQ: New York, NY, United StatesReported employees: Not recorded | New York, NY, United States | Not recorded | Exact match | 4,904 contacts → |
“GAO Tek is a member of GAO Group of Companies, headquartered in New York City, USA & Toronto, Canada with a strong global presence.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Optical Cable Corporationoccfiber.comHQ: Roanoke, NC, United StatesReported employees: 201-500 | Roanoke, NC, United States | 201-500 | Exact match | 275 contacts → |
“When we first built our reputation as pioneers in fiber optic cable industry, OCC made a commitment to quality, performance, and service.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  OZ Optics LTDozoptics.comHQ: Ottawa, CanadaReported employees: 201-500 | Ottawa, Canada | 201-500 | Exact match | 204 contacts → |
“OZ Optics Limited is a leading worldwide supplier of fiber optic products for existing and next-generation optical networks.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Fiber Instrument Sales, INCfiberinstrumentsales.comHQ: Oriskany, NY, United StatesReported employees: 201-500 | Oriskany, NY, United States | 201-500 | Exact match | 153 contacts → |
“Fiber Instrument Sales, Inc.(FIS) was founded in 1985 to fulfill the growing need in the communications industry for fiber optic cables and connectivity equipment.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  West Coast Optilinks WCOwestcoastoptilinks.comHQ: New Delhi, IndiaReported employees: 501-1,000 | New Delhi, India | 501-1,000 | Exact match | 149 contacts → |
“West Coast Optilinks (A division of West Coast Paper Mills Ltd.), belongs to a USD 700 Million fast growing Industrial business house “S.K.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  GL Communicationsgl.comHQ: IndiaReported employees: 51-200 | India | 51-200 | Exact match | 119 contacts → |
“GL Communications Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Amphenol Fiber Systems Internationalfibersystems.comHQ: Allen, TX, United StatesReported employees: 201-500 | Allen, TX, United States | 201-500 | Exact match | 113 contacts → |
“Amphenol Fiber Systems International (AFSI) is a full service fiber optic company specializing in the fabrication and manufacture of fiber optic connectivity products and systems.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Fiber Network Services INCfibernetworkservices.comHQ: Manassas, VA, United StatesReported employees: 51-200 | Manassas, VA, United States | 51-200 | Exact match | 107 contacts → |
“FNS performs all aspects of aerial and underground construction, OSP maintenance, fiber splicing and testing, business fiber installation, fiber relocates, damaged fiber…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Sunrise Telecomveexinc.comHQ: Fremont, CA, United StatesReported employees: Not recorded | Fremont, CA, United States | Not recorded | Exact match | 96 contacts → |
“Sunrise Telecom® is a registered trademark of VeEX Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Fiber Optic Centerfocenter.comHQ: New Bedford, MA, United StatesReported employees: 11-50 | New Bedford, MA, United States | 11-50 | Exact match | 89 contacts → |
“Fiber Optic Center, Inc,(FOC), is an international distributor of fiber optic components, equipment and supplies and the industry connection to the most innovative optical…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Trend Networkstrend-networks.comHQ: High Wycombe, United KingdomReported employees: 51-200 | High Wycombe, United Kingdom | 51-200 | Exact match | 63 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Spfiberspfiber.com.brHQ: Taboão Da Serra, BrazilReported employees: 201-500 | Taboão Da Serra, Brazil | 201-500 | Exact match | 62 contacts → |
“Integradores por natureza, oferecemos soluções de implantação, manutenção e fiscalização de redes de fibra óptica.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Photon Kineticspkinetics.comHQ: United StatesReported employees: 51-200 | United States | 51-200 | Exact match | 59 contacts → |
“Founded in 1979, Photon Kinetics is the leading supplier of measurement solutions for the optical fiber, cable and component manufacturing industry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Inno Instrument INCinnoinstrument.comHQ: Incheon, South KoreaReported employees: 201-500 | Incheon, South Korea | 201-500 | Exact match | 54 contacts → |
“INNO INSTRUMENT is one of the reputed global suppliers of various equipment to telecommunications industry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  ETK Kablo Sanayi VE Ticaret A. Şetkkablo.comHQ: Istanbul, TürkiyeReported employees: 201-500 | Istanbul, Türkiye | 201-500 | Exact match | 52 contacts → |
“ETK Kablo, whichs main principle is quality, is founded in 1979 in Istanbul, Türkiye to manufacture telephone cables.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Fastech Telecommunicationsfastech-india.comHQ: Mumbai, IndiaReported employees: 11-50 | Mumbai, India | 11-50 | Exact match | 46 contacts → |
“Fastech Telecommunications is a leading provider of telecommunications test and measurement solutions in India.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  SUMIXsumix.comHQ: Oceanside, CA, United StatesReported employees: 51-200 | Oceanside, CA, United States | 51-200 | Exact match | 43 contacts → |
“Sumix designs, develops and manufactures high-end test equipment for fiber optic industry, interferometers and inspection probes, industrial USB 3.0 cameras, USB 2.0 cameras and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Sedi-Ati By Fiber Optics Groupsedi-ati.comHQ: Evry-courcouronnes, FranceReported employees: 51-200 | Evry-courcouronnes, France | 51-200 | Exact match | 42 contacts → |
“SEDI-ATI by Fiber Optics Group has been a subsidiary of Fiber Optics Group (FOG) since 2023.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Fiber Connections INCfiberc.comHQ: Tottenham, ON, United KingdomReported employees: 51-200 | Tottenham, ON, United Kingdom | 51-200 | Exact match | 39 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 20 |  Fiberwork Optical Communicationsfiberwork.netHQ: Campinas, BrazilReported employees: 11-50 | Campinas, Brazil | 11-50 | Exact match | 38 contacts → |
“FiberWork is a company specialized in Optical Fiber Communication Technology.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Ifotecifotec.comHQ: Voiron, FranceReported employees: 11-50 | Voiron, France | 11-50 | Exact match | 37 contacts → |
“IFOTEC, c’est l’alliance entre la maîtrise des fibres optiques et des technologies électroniques de communication.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Taihan Fiberopticstaihanfiber.comHQ: 경기도 안산시, South KoreaReported employees: 201-500 | 경기도 안산시, South Korea | 201-500 | Exact match | 36 contacts → |
“Taihan Fiberoptics co, Ltd.[KOSDAQ: 010170], which is specialized in manufacturing optical fiber, fiber optic cables and accessories.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Optral S.Aoptral.com HQ: Alcobendas, SpainReported employees: 51-200 | Alcobendas, Spain | 51-200 | Exact match | 35 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Dene Deutsche Netzbau Gmbhde-ne.deHQ: Goldbach, GermanyReported employees: 51-200 | Goldbach, Germany | 51-200 | Exact match | 34 contacts → |
“Glasfaserausbau, Wartung und Reparaturen, Bau.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  VH Fibre Optics PTY LTDvhfibre.co.zaHQ: Midrand, South AfricaReported employees: 11-50 | Midrand, South Africa | 11-50 | Exact match | 33 contacts → |
“VH Fibre Optics is a specialist passive fibre optic solutions provider.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 1,111 company matches
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Fiber optic testing companies: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
1,095 records in the displayed employee bands.
16 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 1,111 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Fiber optic testing companies by location
5 lists · largest firstEvery Fiber optic testing companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for fiber optic testing companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many fiber optic testing companies did RevenueBase find worldwide?
The saved snapshot records 1,111 matching company records, 13,356 tracked contacts and 1,497 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 fiber optic testing companies worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/fiber-optic-testing-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 fiber optic testing companies worldwide
RevenueBase records 1,111 matching company records for fiber optic testing companies worldwide, with 13,356 tracked contacts and 1,497 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 fiber optic testing companies worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Gaotek INCgaotek.com HQ: New York, NY, United StatesReported employees: Not recorded | New York, NY, United States | Not recorded | Exact match | 4,904 contacts → |
“GAO Tek is a member of GAO Group of Companies, headquartered in New York City, USA & Toronto, Canada with a strong global presence.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Optical Cable Corporationoccfiber.com HQ: Roanoke, NC, United StatesReported employees: 201-500 | Roanoke, NC, United States | 201-500 | Exact match | 275 contacts → |
“When we first built our reputation as pioneers in fiber optic cable industry, OCC made a commitment to quality, performance, and service.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | OZ Optics LTDozoptics.com HQ: Ottawa, CanadaReported employees: 201-500 | Ottawa, Canada | 201-500 | Exact match | 204 contacts → |
“OZ Optics Limited is a leading worldwide supplier of fiber optic products for existing and next-generation optical networks.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Fiber Instrument Sales, INCfiberinstrumentsales.com HQ: Oriskany, NY, United StatesReported employees: 201-500 | Oriskany, NY, United States | 201-500 | Exact match | 153 contacts → |
“Fiber Instrument Sales, Inc.(FIS) was founded in 1985 to fulfill the growing need in the communications industry for fiber optic cables and connectivity equipment.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | West Coast Optilinks WCOwestcoastoptilinks.com HQ: New Delhi, IndiaReported employees: 501-1,000 | New Delhi, India | 501-1,000 | Exact match | 149 contacts → |
“West Coast Optilinks (A division of West Coast Paper Mills Ltd.), belongs to a USD 700 Million fast growing Industrial business house “S.K.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | GL Communicationsgl.com HQ: IndiaReported employees: 51-200 | India | 51-200 | Exact match | 119 contacts → |
“GL Communications Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Amphenol Fiber Systems Internationalfibersystems.com HQ: Allen, TX, United StatesReported employees: 201-500 | Allen, TX, United States | 201-500 | Exact match | 113 contacts → |
“Amphenol Fiber Systems International (AFSI) is a full service fiber optic company specializing in the fabrication and manufacture of fiber optic connectivity products and systems.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Fiber Network Services INCfibernetworkservices.com HQ: Manassas, VA, United StatesReported employees: 51-200 | Manassas, VA, United States | 51-200 | Exact match | 107 contacts → |
“FNS performs all aspects of aerial and underground construction, OSP maintenance, fiber splicing and testing, business fiber installation, fiber relocates, damaged fiber…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Sunrise Telecomveexinc.com HQ: Fremont, CA, United StatesReported employees: Not recorded | Fremont, CA, United States | Not recorded | Exact match | 96 contacts → |
“Sunrise Telecom® is a registered trademark of VeEX Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Fiber Optic Centerfocenter.com HQ: New Bedford, MA, United StatesReported employees: 11-50 | New Bedford, MA, United States | 11-50 | Exact match | 89 contacts → |
“Fiber Optic Center, Inc,(FOC), is an international distributor of fiber optic components, equipment and supplies and the industry connection to the most innovative optical…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Trend Networkstrend-networks.com HQ: High Wycombe, United KingdomReported employees: 51-200 | High Wycombe, United Kingdom | 51-200 | Exact match | 63 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Spfiberspfiber.com.br HQ: Taboão Da Serra, BrazilReported employees: 201-500 | Taboão Da Serra, Brazil | 201-500 | Exact match | 62 contacts → |
“Integradores por natureza, oferecemos soluções de implantação, manutenção e fiscalização de redes de fibra óptica.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Photon Kineticspkinetics.com HQ: United StatesReported employees: 51-200 | United States | 51-200 | Exact match | 59 contacts → |
“Founded in 1979, Photon Kinetics is the leading supplier of measurement solutions for the optical fiber, cable and component manufacturing industry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Inno Instrument INCinnoinstrument.com HQ: Incheon, South KoreaReported employees: 201-500 | Incheon, South Korea | 201-500 | Exact match | 54 contacts → |
“INNO INSTRUMENT is one of the reputed global suppliers of various equipment to telecommunications industry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | ETK Kablo Sanayi VE Ticaret A. Şetkkablo.com HQ: Istanbul, TürkiyeReported employees: 201-500 | Istanbul, Türkiye | 201-500 | Exact match | 52 contacts → |
“ETK Kablo, whichs main principle is quality, is founded in 1979 in Istanbul, Türkiye to manufacture telephone cables.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Fastech Telecommunicationsfastech-india.com HQ: Mumbai, IndiaReported employees: 11-50 | Mumbai, India | 11-50 | Exact match | 46 contacts → |
“Fastech Telecommunications is a leading provider of telecommunications test and measurement solutions in India.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | SUMIXsumix.com HQ: Oceanside, CA, United StatesReported employees: 51-200 | Oceanside, CA, United States | 51-200 | Exact match | 43 contacts → |
“Sumix designs, develops and manufactures high-end test equipment for fiber optic industry, interferometers and inspection probes, industrial USB 3.0 cameras, USB 2.0 cameras and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Sedi-Ati By Fiber Optics Groupsedi-ati.com HQ: Evry-courcouronnes, FranceReported employees: 51-200 | Evry-courcouronnes, France | 51-200 | Exact match | 42 contacts → |
“SEDI-ATI by Fiber Optics Group has been a subsidiary of Fiber Optics Group (FOG) since 2023.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Fiber Connections INCfiberc.com HQ: Tottenham, ON, United KingdomReported employees: 51-200 | Tottenham, ON, United Kingdom | 51-200 | Exact match | 39 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 20 | Fiberwork Optical Communicationsfiberwork.net HQ: Campinas, BrazilReported employees: 11-50 | Campinas, Brazil | 11-50 | Exact match | 38 contacts → |
“FiberWork is a company specialized in Optical Fiber Communication Technology.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Ifotecifotec.com HQ: Voiron, FranceReported employees: 11-50 | Voiron, France | 11-50 | Exact match | 37 contacts → |
“IFOTEC, c’est l’alliance entre la maîtrise des fibres optiques et des technologies électroniques de communication.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Taihan Fiberopticstaihanfiber.com HQ: 경기도 안산시, South KoreaReported employees: 201-500 | 경기도 안산시, South Korea | 201-500 | Exact match | 36 contacts → |
“Taihan Fiberoptics co, Ltd.[KOSDAQ: 010170], which is specialized in manufacturing optical fiber, fiber optic cables and accessories.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Optral S.Aoptral.com HQ: Alcobendas, SpainReported employees: 51-200 | Alcobendas, Spain | 51-200 | Exact match | 35 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Dene Deutsche Netzbau Gmbhde-ne.de HQ: Goldbach, GermanyReported employees: 51-200 | Goldbach, Germany | 51-200 | Exact match | 34 contacts → |
“Glasfaserausbau, Wartung und Reparaturen, Bau.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | VH Fibre Optics PTY LTDvhfibre.co.za HQ: Midrand, South AfricaReported employees: 11-50 | Midrand, South Africa | 11-50 | Exact match | 33 contacts → |
“VH Fibre Optics is a specialist passive fibre optic solutions provider.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 1,111 company matches
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Fiber optic testing companies: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
1,095 records in the displayed employee bands.
16 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 1,111 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Fiber optic testing companies by location
5 lists · largest firstEvery Fiber optic testing companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for fiber optic testing companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many fiber optic testing companies did RevenueBase find worldwide?
The saved snapshot records 1,111 matching company records, 13,356 tracked contacts and 1,497 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 fiber optic testing companies worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/fiber-optic-testing-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗