Company lists · Data refreshed September 2026

Top 25 Fiber optic network builders based in Italy

Name: Fiber optic network builders based in Italy
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 183 companies tracked

RevenueBase identified 183 fiber optic network builders headquartered in Italy as of September 2026 and tracks 3,533 professional contacts across them, including 1,618 with verified work emails. Roma is the largest hub.

This list covers fiber optic network builders headquartered in Italy, 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 20, 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 20, 2026 86% judged on-target in blind review

183Companies

3,533Contacts tracked

1,618Verified emails

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The 25 largest fiber optic network builders based in Italy

Ranked by team size

Top 25 of 183 fiber optic network builders based in Italy, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to fiber optic network builders: 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	Open Fiber	Partial evidence	Rome, ItalyHQ checked Sep 20, 2026	1,001-5,000	1,818 contacts →
	Partial evidence “Open Fiber nasce a dicembre 2016 con l’obiettivo di realizzare un’infrastruttura di rete a banda ultra larga (BUL) in fibra ottica FTTH (Fiber To The Home) in tutte le regioni…” Source: RevenueBase Database · checked Sep 20, 2026
2	Siat Installazioni S.P.A	Indirect evidence	Ariccia, ItalyHQ checked Sep 20, 2026	501-1,000	235 contacts →
	Indirect evidence “Siamo presenti sul mercato nazionale fin dal 1979.” Source: RevenueBase Database · checked Sep 20, 2026
3	Sertori S.P.A	Indirect evidence	Milano, ItalyHQ checked Sep 20, 2026	201-500	107 contacts →
	Indirect evidence “L'AZIENDA Da molti decenni Sertori S.p.A.” Source: RevenueBase Database · checked Sep 20, 2026
4	Sm-Optics	Strong evidence	Cologno Monzese, ItalyHQ checked Sep 20, 2026	201-500	102 contacts →
	Strong evidence “SM-OPTICS is company driving innovation in fiber based communication, counting on a proven management and R&D team with 20+ years of experience in the optical domain as well as…” Source: RevenueBase Database · checked Sep 20, 2026
5	Fibermind S.R.L	Indirect evidence	ItalyHQ checked Sep 20, 2026	51-200	89 contacts →
	Indirect evidence “Fibermind is an Italian company of excellence in civil engineering and telecommunications, specialized in consulting and engineering design in the field of construction and…” Source: RevenueBase Database · checked Sep 20, 2026
6	Todos.It S.R.L. Telecomunicazioni	Indirect evidence	Pisogne, ItalyHQ checked Sep 20, 2026	51-200	54 contacts →
	Indirect evidence “Todos.it S.r.l.” Source: RevenueBase Database · checked Sep 20, 2026
7	MDS Impianti	Indirect evidence	Colico, ItalyHQ checked Sep 20, 2026	51-200	54 contacts →
	Indirect evidence “MDS Impianti vanta un’esperienza decennale nei settori dell’impiantistica e delle telecomunicazioni.” Source: RevenueBase Database · checked Sep 20, 2026
8	Fibreconnect	Indirect evidence	Rome, ItalyHQ checked Sep 20, 2026	51-200	49 contacts →
	Indirect evidence “FibreConnect è un operatore indipendente che fornisce servizi di connettività attraverso una rete in fibra ottica ad alte prestazioni e affidabile.” Source: RevenueBase Database · checked Sep 20, 2026
9	Inpowergroup Scpa	Indirect evidence	Naples, ItalyHQ checked Sep 20, 2026	51-200	42 contacts →
	Indirect evidence “InPowerGroup è un consorzio italiano nato nel 2009 che opera con una altissima specializzazione nel settore delle Infrastrutture e Impianti ad Alta Tecnologia.” Source: RevenueBase Database · checked Sep 20, 2026
10	Itcore S.P.A	Indirect evidence	Brescia, ItalyHQ checked Sep 20, 2026	11-50	25 contacts →
	Indirect evidence “Nata nel 2009 dalla fusione di Intertelefonica e Tecnotel, ITCore S.p.a.” Source: RevenueBase Database · checked Sep 20, 2026
11	Multiwire S.R.L	Indirect evidence	Cuneo, ItalyHQ checked Sep 20, 2026	11-50	19 contacts →
	Indirect evidence “Internet Service And Application Provider dal 1995, MULTIWIRE è cresciuta insieme alle rete Internet.” Source: RevenueBase Database · checked Sep 20, 2026
12	Fibraweb S.P.A	Indirect evidence	Perugia, ItalyHQ checked Sep 20, 2026	11-50	18 contacts →
	Indirect evidence “Fibraweb, che lavora esclusivamente con clienti Business, mira a coprire con la propria fibra proprietaria la maggior parte delle aree industriali in Umbria, Marche, Toscana e…” Source: RevenueBase Database · checked Sep 20, 2026
13	Riel SRL	Strong evidence	Tavagnacco, ItalyHQ checked Sep 20, 2026	51-200	18 contacts →
	Strong evidence “Riel Srl specializes in telecommunication infrastructure construction, with particular focus in fiber optic networks.” Source: RevenueBase Database · checked Sep 20, 2026
14	Ingenial Group SRL	Indirect evidence	Chiaravalle, ItalyHQ checked Sep 20, 2026	11-50	18 contacts →
	Indirect evidence “Operiamo su tutto il territorio nazionale.” Source: RevenueBase Database · checked Sep 20, 2026
15	Comeser S.R.L	Indirect evidence	Fidenza, ItalyHQ checked Sep 20, 2026	51-200	17 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
16	ICCOM	Indirect evidence	Turin, ItalyHQ checked Sep 20, 2026	11-50	17 contacts →
	Indirect evidence “Iccom was founded in 2007 by a group of former Polytechnic University of Turin engineers as a company specialized in the research, installation and management of telecommunication…” Source: RevenueBase Database · checked Sep 20, 2026
17	Connectivia	Indirect evidence	Angri, ItalyHQ checked Sep 20, 2026	11-50	16 contacts →
	Indirect evidence “CONNECTIVIA è il primo operatore a livello nazionale ad avere sviluppato una rete di nuova generazione interamente in fibra ottica ed è il primo operatore dati a banda ultra larga…” Source: RevenueBase Database · checked Sep 20, 2026
18	Inovative SRL	Strong evidence	Cittadella, ItalyHQ checked Sep 20, 2026	11-50	14 contacts →
	Strong evidence “Inovative Srl is a small Italian Company, which operates in Telecommunications Field's, especially Fiber Optics Networks.” Source: RevenueBase Database · checked Sep 20, 2026
19	ER TLC	Indirect evidence	Monza, ItalyHQ checked Sep 20, 2026	11-50	13 contacts →
	Indirect evidence “ER TLC is a StartUp founded in 2019 by a group of established professionals in the telecommunications industry.” Source: RevenueBase Database · checked Sep 20, 2026
20	RCS Tecnoimpianti SRL	Partial evidence	Castegnato, ItalyHQ checked Sep 20, 2026	11-50	12 contacts →
	Partial evidence “RCS Tecnoimpianti, nasce dall'esperienza pluriennale di tre colleghi, Rosario, Cesare e Sergio, maturata nel settore della telefonia, infrastruttura di rete, networking e TVCC.” Source: RevenueBase Database · checked Sep 20, 2026
21	Semantik-Lab SRL	Indirect evidence	Medesano, ItalyHQ checked Sep 20, 2026	11-50	10 contacts →
	Indirect evidence “Progettiamo e realizziamo soluzioni di cablaggio strutturato adeguate alle specificità di ogni singolo cliente.” Source: RevenueBase Database · checked Sep 20, 2026
22	TOM	Partial evidence	Paderno Dugnano, ItalyHQ checked Sep 20, 2026	51-200	9 contacts →
	Partial evidence “TOM is Italy market leader in Fixed Access Services, IP technologies, Mobile Networks, FTTx Actvities, Facillity Mangement, Maintenance, Technological installations and Civil…” Source: RevenueBase Database · checked Sep 20, 2026
23	SP & S SRL	Indirect evidence	Treviso, ItalyHQ checked Sep 20, 2026	11-50	8 contacts →
	Indirect evidence “Studio tecnico” Source: RevenueBase Database · checked Sep 20, 2026
24	2m NET SRL	Indirect evidence	Grigno, ItalyHQ checked Sep 20, 2026	11-50	7 contacts →
	Indirect evidence “Siamo un’azienda giovane e dinamica, creata da due soci, con esperienza decennale nel settore delle telecomunicazioni, rete dati, sicurezza e impiantistica.” Source: RevenueBase Database · checked Sep 20, 2026
25	OFS SRL	Indirect evidence	Cusano Milanino, ItalyHQ checked Sep 20, 2026	1-10	7 contacts →
	Indirect evidence “Dal 1996: Più 25 anni di esperienza OFS nasce nel 1996 dall’iniziativa di un team di professionisti con esperienza ventennale provenienti da grandi realtà del settore.” Source: RevenueBase Database · checked Sep 20, 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 network builders. 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 network builders.
Partial evidence: Its own public description names part of fiber optic network builders, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name fiber optic network builders. 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 183 fiber optic network builders based in Italy

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Fiber optic network builders based in Italy at a glance

As of Sep 20, 2026

45.8%Verified-email coverage

19.3Average contacts per company

11-50Median size (employees)

4.4%Largest-city concentration · Roma

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Italy, so it is reported there. Company counts and contact totals on this page are exact for Italy, over 183 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 network builders, 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 Italy whose own description of what they do matches “fiber optic network builders”. 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 network builders), 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 network builders, and records with no verified work email. Companies headquartered outside Italy 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, 1,618 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 20, 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 network builders, 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 network builders are there based in Italy?

RevenueBase identified 183 fiber optic network builders headquartered in Italy 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?

Open Fiber, headquartered in Rome, tops this list with the largest team on record.

Which city has the most fiber optic network builders?

Roma leads with 8 headquartered companies, followed by Torino (7) and Palermo (6).

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 1,618 verified decision-maker contacts tracked across these 183 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 20, 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.