Company lists · Data refreshed October 2026

Top 21 Internet service infrastructure builders based in Ireland

Name: Internet service infrastructure builders based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 17, 2026 40 companies tracked

RevenueBase identified 40 company matches for internet service infrastructure builders associated with Ireland as of October 2026 and tracks 1,278 professional contacts across them, including 519 with verified work emails. Dublin is the largest hub.

This list covers company matches for internet service infrastructure builders associated with Ireland, 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 October 17, 2026.

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

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 17, 2026 How this list was built

40Companies

1,278Contacts tracked

519Verified emails

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

The 21 largest internet service infrastructure builders based in Ireland

Ranked by team size

Top 21 of 40 company matches for internet service infrastructure builders based in Ireland, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 17, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Entegro	Exact match	Kilkenny, IrelandHQ recorded Oct 17, 2026	201-500	220 contacts →
	Exact match “Entegro is at the forefront of Telecommunications technology, designing and deploying gigabit networks for future generations.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
2	SIRO	Exact match	Dublin, IrelandHQ recorded Oct 17, 2026	51-200	145 contacts →
	Exact match “SIRO have always been fibre first with a 100% fibre-to-the-building network built on the ESB infrastructure.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
3	Open EIR	Exact match	Dublin 8, IrelandHQ recorded Oct 17, 2026	1,001-5,000	143 contacts →
	Exact match “open eir builds and manages the largest wholesale telecoms network in Ireland.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
4	Delmec	Exact match	Graiguecullen, IrelandHQ recorded Oct 17, 2026	51-200	137 contacts →
	Exact match “Delmec Engineering is an international telecom infrastructure engineering company helping Mobile Network Operators (MNOs), Tower Companies (TowerCos), infrastructure investors and…” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
5	CET Connect	Exact match	Clonmel, IrelandHQ recorded Oct 17, 2026	51-200	79 contacts →
	Exact match “CET Connect is a leading installer of IT Network Infrastructure & Structured Cabling Installations.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
6	Telcom	Exact match	Dublin, IrelandHQ recorded Oct 17, 2026	11-50	65 contacts →
	Exact match “Established in by its current managing director, Liam Tully Snr, Telcom is a privately-owned ISP, unified communications and managed services specialist.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
7	Network 2000	Exact match	County Dublin, IrelandHQ recorded Oct 17, 2026	11-50	25 contacts →
	Exact match “Established in 2002, Network has been providing dedicated and specialised telecommunications infrastructure services to the commercial, industrial & public sectors.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
8	Elio Networks	Exact match	Dublin, IrelandHQ recorded Oct 17, 2026	11-50	22 contacts →
	Exact match “Say hello to a connectivity provider that aims higher, connects faster, and performs smarter.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
9	Thomond Communications LTD	Exact match	Limerick, IrelandHQ recorded Oct 17, 2026	11-50	18 contacts →
	Exact match “Thomond Communications Ltd was established in 2005 to provide a turnkey solution in the Telecomms/Datacomms market.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
10	Crescent Infrastructure LTD	Exact match	Dublin, IrelandHQ recorded Oct 17, 2026	51-200	17 contacts →
	Exact match “Crescent Infrastructure is a trusted partner within the most highly secured Data Centres and highly respected prominent businesses and industries in Ireland.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
11	Regional Broadband	Exact match	Dublin, IrelandHQ recorded Oct 17, 2026	11-50	16 contacts →
	Exact match “We provide broadband options in rural areas where nobody else can.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
12	Lightnet	Exact match	Loughrea, IrelandHQ recorded Oct 17, 2026	11-50	15 contacts →
	Exact match “Lightnet are an Irish company providing broadband, VoIP and connectivity solutions to homes and businesses.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
13	Aptus Broadband	Exact match	Bagenalstown, IrelandHQ recorded Oct 17, 2026	11-50	14 contacts →
	Exact match “Aptus an Award-Winning broadband company based in Bagenalstown, Co.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
14	Turnua	Exact match	Naas, IrelandHQ recorded Oct 17, 2026	11-50	12 contacts →
	Exact match “Ireland’s leading partner for delivering end-to-end solutions across construction, civil works, IT infrastructure, fibre and telecoms.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
15	Cbec Installation Services	Exact match	Dublin, IrelandHQ recorded Oct 17, 2026	11-50	4 contacts →
	Exact match “Cbec has over 33 years’ experience delivering Electrical services and 16 years delivering high-quality telecom services across Ireland.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
16	Whizzy Internet	Exact match	Gorey, IrelandHQ recorded Oct 17, 2026	1-10	3 contacts →
	Exact match “Whizzy Internet provides high speed broadband to businesses and homes in the Gorey area.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
17	Netcomm Ireland	Exact match	Dublin, IrelandHQ recorded Oct 17, 2026	11-50	3 contacts →
	Exact match “Netcomm is one of Irelands leading providers of Communications and Network Solutions.” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
18	Model Telecom	Exact match	Dublin, IrelandHQ recorded Oct 17, 2026	1-10	2 contacts →
	Exact match “Established in 1998 we are a wholly Irish owned company fully licensed by the Commission for Communications Regulation (Comreg).” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
19	Lynch Networks	Exact match	Dublin, IrelandHQ recorded Oct 17, 2026	11-50	1 contacts →
	Exact match “Lynch Networks are a Ltd, VAT registered company, registered in Ireland and Based in Dublin that specialize in the installation and after support of network infrastructure…” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
20	Agile Networks LTD	Exact match	Saggart, IrelandHQ recorded Oct 17, 2026	11-50	1 contacts →
	Exact match “Who Are Agile Networks?” Recorded in the RevenueBase company graph · Oct 17, 2026 · View company records in RevenueBase
21	Celtic Broadband Limited	Exact match	Kilross, IrelandHQ recorded Oct 17, 2026	1-10	1 contacts →
	Exact match “Celtic Broadband supplies fixed wireless broadband services to counties Limerick, Tipperary, Cork and Shannon.~ Wireless Broadband ~ No telephone line is required ~ Coverage in…” Recorded in the RevenueBase company graph · Oct 17, 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 “internet service infrastructure builders”. 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 21 of 40 internet service infrastructure builders based in Ireland

See the full list, filter by size, metro and specialty, and access 519 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Internet service infrastructure builders based in Ireland at a glance

As of Oct 17, 2026

40.6%Verified-email coverage

31.9Average contacts per company

11-50Median size (employees)

12.5%Largest-city concentration · Dublin

Oct 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 40 companies.

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.
What qualifies: Company records associated with Ireland whose business descriptions match “internet service infrastructure builders” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 519 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 October 17, 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.

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 “internet service infrastructure builders”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many internet service infrastructure builders are there based in Ireland?

RevenueBase identified 40 company matches for internet service infrastructure builders associated with Ireland as of October 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?

Entegro tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most internet service infrastructure builders?

Dublin leads with 5 company records, followed by Saggart (2) and Blackrock (1).

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 519 professional contacts with verified work emails tracked across these 40 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 October 17, 2026.

Ready to reach these companies? Verified emails and direct dials for all 40 internet service infrastructure builders based in Ireland. Start with a free account, no credit card.

Download this list →

Related lists

Internet service infrastructure builders 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 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.