Company lists · Data refreshed September 2026

Top 25 Telecommunications infrastructure providers based in Ireland

Name: Telecommunications infrastructure providers based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 68 companies tracked

RevenueBase identified 68 telecommunications infrastructure providers headquartered in Ireland as of September 2026 and tracks 4,550 professional contacts across them, including 1,442 with verified work emails. Dublin is the largest hub.

This list covers telecommunications infrastructure providers headquartered in Ireland, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.

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

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

68Companies

4,550Contacts tracked

1,442Verified emails

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The 25 largest telecommunications infrastructure providers based in Ireland

Ranked by team size

Top 25 of 68 telecommunications infrastructure providers based in Ireland, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to telecommunications infrastructure providers: 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	Entegro	Partial evidence	Kilkenny, IrelandHQ checked Sep 19, 2026	201-500	210 contacts →
	Partial evidence “Entegro is at the forefront of Telecommunications technology, designing and deploying gigabit networks for future generations.” Source: RevenueBase Database · checked Sep 19, 2026
2	BSO	Partial evidence	Dublin, IrelandHQ checked Sep 19, 2026	51-200	201 contacts →
	Partial evidence “Founded in and with a heritage serving the world’s largest financial institutions, BSO is a global pioneering infrastructure and connectivity provider, serving more than 400…” Source: RevenueBase Database · checked Sep 19, 2026
3	Enet Open Access Networks	Indirect evidence	Castletroy, IrelandHQ checked Sep 19, 2026	51-200	196 contacts →
	Indirect evidence “Unlocking Ireland's Digital Potential: Enet, Your Gateway to Global Connectivity!” Source: RevenueBase Database · checked Sep 19, 2026
4	EIR Business	Indirect evidence	Dublin 8, IrelandHQ checked Sep 19, 2026	501-1,000	188 contacts →
	Indirect evidence “eir business is Ireland’s trusted provider of secure, managed connectivity, cloud, cybersecurity, workplace, mobile and technology talent solutions.” Source: RevenueBase Database · checked Sep 19, 2026
5	SIRO	Partial evidence	Dublin, IrelandHQ checked Sep 19, 2026	51-200	149 contacts →
	Partial evidence “SIRO have always been fibre first with a 100% fibre-to-the-building network built on the ESB infrastructure.” Source: RevenueBase Database · checked Sep 19, 2026
6	Open EIR	Indirect evidence	Dublin 8, IrelandHQ checked Sep 19, 2026	1,001-5,000	138 contacts →
	Indirect evidence “open eir builds and manages the largest wholesale telecoms network in Ireland.” Source: RevenueBase Database · checked Sep 19, 2026
7	Secto Services Limited	Partial evidence	Maynooth, IrelandHQ checked Sep 19, 2026	201-500	136 contacts →
	Partial evidence “Delivering Successful Engineering and Technical Services Secto Services is a fast growing Infrastructure build and engineering solutions company where customer service and the…” Source: RevenueBase Database · checked Sep 19, 2026
8	Delmec	Partial evidence	Graiguecullen, IrelandHQ checked Sep 19, 2026	51-200	135 contacts →
	Partial evidence “Delmec Engineering is an international telecom infrastructure engineering company helping Mobile Network Operators (MNOs), Tower Companies (TowerCos), infrastructure investors and…” Source: RevenueBase Database · checked Sep 19, 2026
9	Magnet	Indirect evidence	Dublin 17, IrelandHQ checked Sep 19, 2026	51-200	87 contacts →
	Indirect evidence “Magnet Plus is Ireland’s leading provider of enterprise level connectivity, cloud-based voice solutions and tailored managed services and a core part of Speed Fibre Group…” Source: RevenueBase Database · checked Sep 19, 2026
10	Dexgreen LTD	Indirect evidence	Cork, IrelandHQ checked Sep 19, 2026	11-50	83 contacts →
	Indirect evidence “DexGreen Ltd has operated for over 27 years, engineering novel solutions by collaborating directly with our clients.” Source: RevenueBase Database · checked Sep 19, 2026
11	CET Connect	Partial evidence	Clonmel, IrelandHQ checked Sep 19, 2026	51-200	80 contacts →
	Partial evidence “CET Connect is a leading installer of IT Network Infrastructure & Structured Cabling Installations.” Source: RevenueBase Database · checked Sep 19, 2026
12	Vodafone	Indirect evidence	Donegal Town, IrelandHQ checked Sep 19, 2026	51-200	60 contacts →
	Indirect evidence “At Kelco Communications, we’re proud to keep Ireland connected through our network of 18 Vodafone Partner stores and our team of field agents on the ground across the West and…” Source: RevenueBase Database · checked Sep 19, 2026
13	Telcom	Indirect evidence	Dublin, IrelandHQ checked Sep 19, 2026	11-50	60 contacts →
	Indirect evidence “Established in by its current managing director, Liam Tully Snr, Telcom is a privately-owned ISP, unified communications and managed services specialist.” Source: RevenueBase Database · checked Sep 19, 2026
14	Digiweb	Partial evidence	Dundalk, IrelandHQ checked Sep 19, 2026	51-200	46 contacts →
	Partial evidence “Digiweb is Ireland’s leading independent Telecommunications company.” Source: RevenueBase Database · checked Sep 19, 2026
15	Pure Telecom Ireland	Indirect evidence	Dublin, IrelandHQ checked Sep 19, 2026	51-200	43 contacts →
	Indirect evidence “Pure Telecom, an Irish owned company, has been providing fixed line, broadband and Cloud Telecoms services since 2002.” Source: RevenueBase Database · checked Sep 19, 2026
16	Glenline Telecoms	Partial evidence	Clane, IrelandHQ checked Sep 19, 2026	51-200	37 contacts →
	Partial evidence “The purpose of our business is to provide design and build engineering service to mobile phone operators, equipment vendors and tower infrastructure providers throughout Ireland.” Source: RevenueBase Database · checked Sep 19, 2026
17	Fastcom	Partial evidence	Co. Sligo, IrelandHQ checked Sep 19, 2026	11-50	36 contacts →
	Partial evidence “Fastcom is Ireland's fastest-growing telecommunications provider, offering the best #fibre and #wireless broadband and phone services available to homes and businesses across…” Source: RevenueBase Database · checked Sep 19, 2026
18	Spectrum Telecom Installations LTD	Partial evidence	Clane, IrelandHQ checked Sep 19, 2026	51-200	33 contacts →
	Partial evidence “Spectrum is a leading supplier of network deployment and build solutions together with the provision of high quality maintenance services for the telecommunications industry in…” Source: RevenueBase Database · checked Sep 19, 2026
19	Towercom	Partial evidence	Dublin, IrelandHQ checked Sep 19, 2026	11-50	28 contacts →
	Partial evidence “We are one of Ireland’s longest-established independent wireless infrastructure providers.” Source: RevenueBase Database · checked Sep 19, 2026
20	Circet Data Centre Services	Indirect evidence	Dublin 15, IrelandHQ checked Sep 19, 2026	11-50	26 contacts →
	Indirect evidence “Supply and install of Fibre and Copper cable systems for both the Telecom and Data Industry, Data centre Specialists.” Source: RevenueBase Database · checked Sep 19, 2026
21	2rn	Strong evidence	Dublin 24, IrelandHQ checked Sep 19, 2026	51-200	22 contacts →
	Strong evidence “2rn is an infrastructure and service provider to the broadcast transmission and wireless telecommunication markets in Ireland.” Source: RevenueBase Database · checked Sep 19, 2026
22	Network 2000	Strong evidence	County Dublin, IrelandHQ checked Sep 19, 2026	11-50	21 contacts →
	Strong evidence “Established in 2002, Network has been providing dedicated and specialised telecommunications infrastructure services to the commercial, industrial & public sectors.” Source: RevenueBase Database · checked Sep 19, 2026
23	Access Data Installations Ireland LTD	Indirect evidence	Co. Cork, IrelandHQ checked Sep 19, 2026	11-50	21 contacts →
	Indirect evidence “ADI(Ireland) Ltd.” Source: RevenueBase Database · checked Sep 19, 2026
24	Cellnet	Partial evidence	Ennis, IrelandHQ checked Sep 19, 2026	1-10	21 contacts →
	Partial evidence “Cellnet is an exciting independent telecommunications business providing Home & Business owners with Broadband, WiFi, Networking solutions and Cellular coverage solutions.” Source: RevenueBase Database · checked Sep 19, 2026
25	Synchro	Partial evidence	Dún Laoghaire–rathdown, IrelandHQ checked Sep 19, 2026	201-500	20 contacts →
	Partial evidence “Synchro is a young and dynamic Irish company established in 2010 to provide managed services to the eir Group; the principal provider of fixed-line and mobile telecommunications…” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

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

Strong evidence: The company's own public description of its business names telecommunications infrastructure providers.
Partial evidence: Its own public description names part of telecommunications infrastructure providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name telecommunications infrastructure providers. 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 68 telecommunications infrastructure providers based in Ireland

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Telecommunications infrastructure providers based in Ireland at a glance

As of Sep 19, 2026

31.7%Verified-email coverage

66.9Average contacts per company

11-50Median size (employees)

16.2%Largest-city concentration · Dublin

Sep 19, 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 Ireland, so it is reported there. Company counts and contact totals on this page are exact for Ireland, over 68 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 telecommunications infrastructure providers, 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 Ireland whose own description of what they do matches “telecommunications infrastructure providers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names telecommunications infrastructure providers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among telecommunications infrastructure providers, and records with no verified work email. Companies headquartered outside Ireland 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, 1,442 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names telecommunications infrastructure providers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many telecommunications infrastructure providers are there based in Ireland?

RevenueBase identified 68 telecommunications infrastructure providers headquartered in Ireland 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?

Entegro, headquartered in Kilkenny, tops this list with the largest team on record.

Which city has the most telecommunications infrastructure providers?

Dublin leads with 11 headquartered companies, followed by Clane (2) and Galway (2).

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 1,442 verified decision-maker contacts tracked across these 68 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.