Company lists · Data refreshed September 2026

Top 25 Fiber optic telecommunications companies based in France

Name: Fiber optic telecommunications companies based in France
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 349 companies tracked

RevenueBase identified 349 fiber optic telecommunications companies headquartered in France as of September 2026 and tracks 9,877 professional contacts across them, including 1,156 with verified work emails. Paris is the largest hub.

This list covers fiber optic telecommunications companies headquartered in France, 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 30, 2026.

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

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 30, 2026 86% judged on-target in blind review

349Companies

9,877Contacts tracked

1,156Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest fiber optic telecommunications companies based in France

Ranked by team size

Top 25 of 349 fiber optic telecommunications companies based in France, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to fiber optic telecommunications companies: 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	Celeste	Strong evidence	Champs-sur-marne, FranceHQ checked Sep 30, 2026	501-1,000	378 contacts →
	Strong evidence “CELESTE is a leading French telecom operator specializing in high-performance fiber optic, cloud, and cybersecurity solutions for businesses.” Source: RevenueBase Database · checked Sep 30, 2026
2	Xpfibre	Indirect evidence	Courbevoie, FranceHQ checked Sep 30, 2026	201-500	234 contacts →
	Indirect evidence “A propos du groupe XpFibre XpFibre est un Opérateur d’Infrastructure spécialisé dans la conception, la construction et l'exploitation de réseaux de fibre optique.” Source: RevenueBase Database · checked Sep 30, 2026
3	Serfim T.I.C	Indirect evidence	Vénissieux Cedex, FranceHQ checked Sep 30, 2026	201-500	183 contacts →
	Indirect evidence “SERFIM Technologies de l’Information et de la Communication (SERFIM TIC) est spécialisée dans 5 domaines d'activités : Réseaux Fibre Optique Très Haut Débit, Territoires Connectés…” Source: RevenueBase Database · checked Sep 30, 2026
4	Completel	Partial evidence	La Defense, FranceHQ checked Sep 30, 2026	501-1,000	179 contacts →
	Partial evidence “Completel, entreprise du groupe Numericable-Completel, est le premier opérateur de télécommunications FTTO (Fiber to The Office) exclusivement dédié aux entreprises en France.” Source: RevenueBase Database · checked Sep 30, 2026
5	BLUE	Indirect evidence	Châteaubourg, FranceHQ checked Sep 30, 2026	51-200	163 contacts →
	Indirect evidence “Depuis plus de 15 ans, BLUE (Ex-Bretagne Télécom) met son savoir-faire au service des professionnels pour leur fournir réseau très haut débit (THD), hébergement de données et…” Source: RevenueBase Database · checked Sep 30, 2026
6	Groupe Alphalink	Indirect evidence	Pornic, FranceHQ checked Sep 30, 2026	51-200	123 contacts →
	Indirect evidence “Leader sur le marché indirect des télécommunications, Alphalink propose à ses partenaires d’accompagner la transition numérique des entreprises grâce à ses solutions Télécoms.” Source: RevenueBase Database · checked Sep 30, 2026
7	L'agence Télécom	Indirect evidence	Marseille, FranceHQ checked Sep 30, 2026	51-200	101 contacts →
	Indirect evidence “Offering you the best of SFR Business.” Source: RevenueBase Database · checked Sep 30, 2026
8	Idea Optical	Partial evidence	Lannion, FranceHQ checked Sep 30, 2026	51-200	78 contacts →
	Partial evidence “Since its creation 18 years ago, IDEA OPTICAL has become a major player in optical fiber telecoms components and systems.” Source: RevenueBase Database · checked Sep 30, 2026
9	Koesio Networks	Indirect evidence	Valence, FranceHQ checked Sep 30, 2026	51-200	53 contacts →
	Indirect evidence “Notre cœur de métier?” Source: RevenueBase Database · checked Sep 30, 2026
10	Numerus21	Indirect evidence	Gennevilliers, FranceHQ checked Sep 30, 2026	51-200	51 contacts →
	Indirect evidence “Spécialisée en ingénieries réseaux et télécoms, notamment dans la création et le déploiement du réseau très haut débit.” Source: RevenueBase Database · checked Sep 30, 2026
11	Ratp Connect	Indirect evidence	Paris, FranceHQ checked Sep 30, 2026	11-50	48 contacts →
	Indirect evidence “Créé en 1997 sous le nom de Telcité, RATP Connect est la filiale télécom de la RATP.” Source: RevenueBase Database · checked Sep 30, 2026
12	Nexloop France	Partial evidence	Boulogne Billancourt, FranceHQ checked Sep 30, 2026	51-200	44 contacts →
	Partial evidence “Headquartered in Paris, France, and with infrastructure spanning the entire country, Nexloop provides Dark Fiber, Dedicated Internet Access (FTTO), WDM and hosting facilities…” Source: RevenueBase Database · checked Sep 30, 2026
13	Sedi-Ati By Fiber Optics Group	Strong evidence	Evry-courcouronnes, FranceHQ checked Sep 30, 2026	51-200	44 contacts →
	Strong evidence “SEDI-ATI by Fiber Optics Group has been a subsidiary of Fiber Optics Group (FOG) since 2023.” Source: RevenueBase Database · checked Sep 30, 2026
14	Alsatis	Indirect evidence	Toulouse, FranceHQ checked Sep 30, 2026	51-200	36 contacts →
	Indirect evidence “Alsatis provides its services to individuals, businesses and smart territories since 2004.” Source: RevenueBase Database · checked Sep 30, 2026
15	Ifotec	Indirect evidence	Voiron, FranceHQ checked Sep 30, 2026	11-50	34 contacts →
	Indirect evidence “IFOTEC, c’est l’alliance entre la maîtrise des fibres optiques et des technologies électroniques de communication.” Source: RevenueBase Database · checked Sep 30, 2026
16	KYXAR	Indirect evidence	Mours-saint-eusèbe, FranceHQ checked Sep 30, 2026	11-50	34 contacts →
	Indirect evidence “Création de sites e-commerce, accès internet très haut débit fibre optique, messagerie, hébergement.” Source: RevenueBase Database · checked Sep 30, 2026
17	Terralpha	Indirect evidence	Saint-denis, FranceHQ checked Sep 30, 2026	11-50	31 contacts →
	Indirect evidence “Terralpha exploite un réseau de télécommunications sécurisé, ultra haut débit et à très faible latence, déployé le long des voies ferrées.” Source: RevenueBase Database · checked Sep 30, 2026
18	Westlink	Indirect evidence	Niort, FranceHQ checked Sep 30, 2026	51-200	28 contacts →
	Indirect evidence “Filiale du groupe DJM, Westlink est une entreprise spécialisée dans la fibre optique et les réseaux télécom.” Source: RevenueBase Database · checked Sep 30, 2026
19	Opticom	Indirect evidence	Colombes, FranceHQ checked Sep 30, 2026	11-50	27 contacts →
	Indirect evidence “OPTICOM, créé en 2011 est une entreprise de télécommunications spécialisée dans la maintenance et le déploiement de réseaux en fibre optique.” Source: RevenueBase Database · checked Sep 30, 2026
20	Free Réseau	Indirect evidence	Paris, FranceHQ checked Sep 30, 2026	1,001-5,000	26 contacts →
	Indirect evidence “Depuis 1998, nous œuvrons dans la conception, le déploiement, l’exploitation et la maintenance des réseaux avec pour principale ambition : Proposer à tous les dernières…” Source: RevenueBase Database · checked Sep 30, 2026
21	Twelve Group	Indirect evidence	Saint-denis, FranceHQ checked Sep 30, 2026	51-200	25 contacts →
	Indirect evidence “Nous sommes Twelve Group.” Source: RevenueBase Database · checked Sep 30, 2026
22	PRIZZ	Indirect evidence	Amiens, FranceHQ checked Sep 30, 2026	11-50	23 contacts →
	Indirect evidence “Prizz est né de l'alliance du groupe Infra-Corp et de Quaero Capital, investisseur spécialisé en infrastructures et en particulier en infrastructures numériques.” Source: RevenueBase Database · checked Sep 30, 2026
23	Data-Pixel	Indirect evidence	Chavanod, FranceHQ checked Sep 30, 2026	51-200	20 contacts →
	Indirect evidence “Data-Pixel is an international leader in technology for image-processing based test and measurement equipment, since 2001.” Source: RevenueBase Database · checked Sep 30, 2026
24	Jenoptec NT	Indirect evidence	Buc, FranceHQ checked Sep 30, 2026	11-50	17 contacts →
	Indirect evidence “JENOPTEC NT, société Française spécialisée dans la fibre optique et les produits optoélectroniques, œuvre depuis 1986 pour satisfaire l'ensemble des besoins optiques de ses…” Source: RevenueBase Database · checked Sep 30, 2026
25	Swat Telecom	Indirect evidence	Aubagne, FranceHQ checked Sep 30, 2026	1-10	17 contacts →
	Indirect evidence “Spécialiste des liens d’accès Internet et expert en système de téléphonies d'entreprise.” Source: RevenueBase Database · checked Sep 30, 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: fiber optic telecommunications companies. 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 fiber optic telecommunications companies.
Partial evidence: Its own public description names part of fiber optic telecommunications companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name fiber optic telecommunications companies. 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 349 fiber optic telecommunications companies based in France

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,156 reachable decision-makers.

Free signup · no credit card

View the full list →

Fiber optic telecommunications companies based in France at a glance

As of Sep 30, 2026

11.7%Verified-email coverage

28.3Average contacts per company

1-10Median size (employees)

10.3%Largest-city concentration · Paris

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

174

11-50

125

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured worldwide rather than for France, so it is reported there. Company counts and contact totals on this page are exact for France, over 349 companies.

How this list was built

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

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in France whose own description of what they do matches “fiber optic telecommunications companies”. 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 fiber optic telecommunications companies), 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 fiber optic telecommunications companies, and records with no verified work email. Companies headquartered outside France are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 1,156 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 30, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names fiber optic telecommunications companies, 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 fiber optic telecommunications companies are there based in France?

RevenueBase identified 349 fiber optic telecommunications companies headquartered in France 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?

Celeste, headquartered in France, tops this list with the largest team on record.

Which city has the most fiber optic telecommunications companies?

Paris leads with 36 headquartered companies, followed by Toulouse (8) and Lyon (5).

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 1,156 verified decision-maker contacts tracked across these 349 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 30, 2026.

Ready to reach these companies? Verified emails and direct dials for all 349 fiber optic telecommunications companies based in France. Start with a free account, no credit card.

Download this list →

Related lists

Fiber optic telecommunications companies by geography

Browse the directory

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.