Company lists · Data refreshed September 2026

Top 25 Unified communications services for IT consulting firms based in the Netherlands

RevenueBase identified 82 unified communications services for IT consulting firms headquartered in the Netherlands as of September 2026 and tracks 1,421 professional contacts across them, including 396 with verified work emails. Harderwijk is the largest hub.

This list covers unified communications services for IT consulting firms headquartered in the Netherlands, 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 21, 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 21, 2026 86% judged on-target in blind review
82Companies
1,421Contacts tracked
396Verified emails
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The 25 largest unified communications services for IT consulting firms based in the Netherlands

Ranked by team size
Top 25 of 82 unified communications services for IT consulting firms based in the Netherlands, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to unified communications services for IT consulting firms: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceVeghel, NetherlandsHQ checked Sep 21, 202651-200394 contacts →

Partial evidence

IT & UC.”

Source: RevenueBase Database · checked Sep 21, 2026
2Strong evidenceAlmere, NetherlandsHQ checked Sep 21, 20261,001-5,000178 contacts →

Strong evidence

“A unified communications company, helping customers work wonders, for their workplaces, their teams and their business.”

Source: RevenueBase Database · checked Sep 21, 2026
3Partial evidenceAmstelveen, NetherlandsHQ checked Sep 21, 202651-20090 contacts →

Partial evidence

“Gamma Communications is een toonaangevende aanbieder van communicatie oplossingen voor zakelijke gebruikers.”

Source: RevenueBase Database · checked Sep 21, 2026
4Indirect evidenceNieuwegein, NetherlandsHQ checked Sep 21, 202651-20077 contacts →

Indirect evidence

“De maatschappij vraagt om verbinding.”

Source: RevenueBase Database · checked Sep 21, 2026
5Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 21, 202611-5037 contacts →

Indirect evidence

“TSV is al meer dan 20 jaar actief op het gebied van bedrijfscommunicatie en uitgegroeid tot een toonaangevend adviseur en uitvoerder van geïntegreerde ICT-systemen (bijvoorbeeld…”

Source: RevenueBase Database · checked Sep 21, 2026
6Indirect evidenceOldenzaal, NetherlandsHQ checked Sep 21, 202611-5033 contacts →

Indirect evidence

“Contict biedt een totaalpakket aan oplossingen, zowel op zichzelf staand als geïntegreerd.”

Source: RevenueBase Database · checked Sep 21, 2026
7Strong evidenceWoerden, NetherlandsHQ checked Sep 21, 202611-5027 contacts →

Strong evidence

“Avesqo is een onafhankelijke B2B audiovisuele en unified communications specialist voor alle zakelijke organisaties.”

Source: RevenueBase Database · checked Sep 21, 2026
8Indirect evidenceVlijmen, NetherlandsHQ checked Sep 21, 202611-5016 contacts →

Indirect evidence

“Do you want to work wherever you are, communicate efficiently and have flexible ways to collaborate with customers and colleagues?”

Source: RevenueBase Database · checked Sep 21, 2026
9Partial evidenceHilversum, NetherlandsHQ checked Sep 21, 202611-5012 contacts →

Partial evidence

“Dia Telecom is active in cloud-based communication solutions for over 16 years.”

Source: RevenueBase Database · checked Sep 21, 2026
10Indirect evidenceOude Meer, NetherlandsHQ checked Sep 21, 20261-109 contacts →

Indirect evidence

“VoiceByte adviseert, implementeert en ondersteunt totaaloplossingen voor telefonie, netwerk infrastructuur (UTP, glasvezel en WiFi; LAN en WAN), cloud- & werkplekbeheer en alle…”

Source: RevenueBase Database · checked Sep 21, 2026
11Partial evidenceMoordrecht, NetherlandsHQ checked Sep 21, 202611-508 contacts →

Partial evidence

“View on IT helpt bedrijven met slimme, betrouwbare en veilige IT-oplossingen.”

Source: RevenueBase Database · checked Sep 21, 2026
12Partial evidence's-gravenzande, NetherlandsHQ checked Sep 21, 20261-107 contacts →

Partial evidence

“Innovatie op IT gebied is alleen al een dagtaak.”

Source: RevenueBase Database · checked Sep 21, 2026
13Indirect evidenceNijkerk, NetherlandsHQ checked Sep 21, 202611-507 contacts →

Indirect evidence

“Large enough to serve you, small enough to know you.”

Source: RevenueBase Database · checked Sep 21, 2026
14Indirect evidenceEnschede, NetherlandsHQ checked Sep 21, 20261-106 contacts →

Indirect evidence

“24Connect - Sterk in bedrijfscommunicatie, connectivity, systeembeheer, security en cloud gerelateerd werken.”

Source: RevenueBase Database · checked Sep 21, 2026
15Partial evidenceEnschede, NetherlandsHQ checked Sep 21, 20261-106 contacts →

Partial evidence

“Microsoft UC focused IT consultancy.”

Source: RevenueBase Database · checked Sep 21, 2026
16Partial evidenceBarendrecht, NetherlandsHQ checked Sep 21, 20261-105 contacts →

Partial evidence

“Digizone levert advies en ondersteuning op het gebied van IT en Telecom aan de MKB-markt.”

Source: RevenueBase Database · checked Sep 21, 2026
17Indirect evidenceHouten, NetherlandsHQ checked Sep 21, 20261-105 contacts →

Indirect evidence

“123AUTOMATISERING biedt u een breed scala aan flexibele ICT mogelijkheden op vlak van: Cloud, VoIP, Connectivity en nog veel meer diensten binnen het MKB segment.”

Source: RevenueBase Database · checked Sep 21, 2026
18Strong evidenceUithoorn, NetherlandsHQ checked Sep 21, 20261-105 contacts →

Strong evidence

“Converged communications: Connectivity, VoIP, Fixed Mobile Convergence (FMC), Unified Comunications (UCAAS), Contact Center (CCAAS)”

Source: RevenueBase Database · checked Sep 21, 2026
19Indirect evidenceDelft, NetherlandsHQ checked Sep 21, 202651-2005 contacts →

Indirect evidence

“Bent u op zoek naar de beste oplossing om uw medewerkers onderling en ook optimaal met klanten te laten communiceren?”

Source: RevenueBase Database · checked Sep 21, 2026
20Indirect evidenceVenlo, NetherlandsHQ checked Sep 21, 20261-104 contacts →

Indirect evidence

“Het aanbod van providers van telefonie en leveranciers van (internet)verbindingen wordt steeds groter en complexer.”

Source: RevenueBase Database · checked Sep 21, 2026
21Indirect evidenceLexmond, NetherlandsHQ checked Sep 21, 20261-104 contacts →

Indirect evidence

“Foxnet is a consultancy firm that guarantees complete solutions for network issues.”

Source: RevenueBase Database · checked Sep 21, 2026
22Indirect evidenceLeusden, NetherlandsHQ checked Sep 21, 202611-504 contacts →

Indirect evidence

“STERK IN SAMENWERKEN EN MODERN COMMUNICEREN” Welkom bij The VOIP Company.”

Source: RevenueBase Database · checked Sep 21, 2026
23Partial evidenceAlmelo, NetherlandsHQ checked Sep 21, 20261-104 contacts →

Partial evidence

“UCaaS is a Dutch information technology company that wants to improve through meaningful innovations in the field of communication and collaboration solutions.”

Source: RevenueBase Database · checked Sep 21, 2026
24Indirect evidenceLx, NetherlandsHQ checked Sep 21, 2026201-5003 contacts →

Indirect evidence

“Maak kennis met Nuvias UC.”

Source: RevenueBase Database · checked Sep 21, 2026
25Indirect evidenceZeddam, NetherlandsHQ checked Sep 21, 202611-503 contacts →

Indirect evidence

“UC-Telecom biedt u een oplossing op maat met de nieuwste ICT-diensten en de beste service.”

Source: RevenueBase Database · checked Sep 21, 2026

Showing 25 of 82 unified communications services for IT consulting firms based in the Netherlands

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Unified communications services for IT consulting firms based in the Netherlands at a glance

As of Sep 21, 2026
27.9%Verified-email coverage
17.3Average contacts per company
1-10Median size (employees)
3.7%Largest-city concentration · Harderwijk
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
55
11-50
18
51-200
5
201-500
1
1,001-5,000
2
5,001-10,000
1

Email recency for this list is measured worldwide rather than for Netherlands, so it is reported there. Company counts and contact totals on this page are exact for Netherlands, over 82 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 unified communications services for IT consulting firms, 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 the Netherlands whose own description of what they do matches “unified communications services for IT consulting firms”. 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 unified communications services for IT consulting firms), 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 unified communications services for IT consulting firms, and records with no verified work email. Companies headquartered outside Netherlands 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, 396 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 21, 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 unified communications services for IT consulting firms, 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 unified communications services for IT consulting firms are there based in the Netherlands?

RevenueBase identified 82 unified communications services for IT consulting firms headquartered in the Netherlands 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?

BSU, headquartered in Ax, tops this list with the largest team on record.

Which city has the most unified communications services for IT consulting firms?

Harderwijk leads with 3 headquartered companies, followed by Amsterdam (2) and Diemen (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 396 verified decision-maker contacts tracked across these 82 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 21, 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.