Company lists · Data refreshed November 2026

Top 25 Systems administration services worldwide

RevenueBase identified 8,373 company matches for systems administration services worldwide as of November 2026 and tracks 62,663 professional contacts across them, including 15,737 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for systems administration services worldwide, 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 November 6, 2026. Country and city lists for systems administration services follow the table.

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 Nov 6, 2026 How this list was built
8,373Companies
62,663Contacts tracked
15,737Verified emails
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The 25 largest systems administration services worldwide

Ranked by team size
Top 25 of 8,373 company matches for systems administration services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchHebron, KY, PalestineHQ recorded Nov 6, 20261,001-5,0002,671 contacts →

Exact match

“Technology is mission-critical to your business so it must work, continuously.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchSingapore, GermanyHQ recorded Nov 6, 2026n/a2,153 contacts →

Exact match

“TRT is a Global Provider of IT Server, Storage and Networking Services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchPorto Alegre, BrazilHQ recorded Nov 6, 20261,001-5,0001,024 contacts →

Exact match

“Há 31 anos, a InterOp entrega serviços em tecnologia da informação, para empresas de todos os tamanhos e setores.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchMclean, VA, United StatesHQ recorded Nov 6, 2026501-1,000534 contacts →

Exact match

“At Ntiva, growing people (our employees, partners, and clients) is our mission.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchAustin, OR, United StatesHQ recorded Nov 6, 2026501-1,000458 contacts →

Exact match

“CMIT Solutions is a premier IT solution company dedicated to delivering enterprise-class IT support to businesses across North America.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchSeville, SpainHQ recorded Nov 6, 2026201-500457 contacts →

Exact match

“Consulta ofertas de trabajo en nuestro portal de empleo: http://empleo.soltel.es Soltel Group es una empresa especializada en la prestación de servicios de administración y…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchBangalore, IndiaHQ recorded Nov 6, 2026201-500301 contacts →

Exact match

“Sureworks Infotech Private Limited (SIPL), a leading IT Solutions provider in India & Dubai was founded in 2009.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchArundel, AustraliaHQ recorded Nov 6, 2026n/a252 contacts →

Exact match

“ONGC Systems provides businesses with comprehensive IT services, that automate and streamline operations, reduce risk and increase stability while lowering the cost of system…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchIndiaHQ recorded Nov 6, 2026201-500211 contacts →

Exact match

“Poornam Info Vision was founded in with the vision of making internet technology accessible to the average business owner.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchBerlin, GermanyHQ recorded Nov 6, 2026201-500196 contacts →

Exact match

“Since Mahr EDV has been synonymous with reliable IT support, excellent service, and the highest customer satisfaction.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchKuala Lumpur, MalaysiaHQ recorded Nov 6, 202651-200194 contacts →

Exact match

“Established in 2003, Bridgenet specializes as a top-notch Information and Technology Solutions Provider for businesses.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchDublin 8, United KingdomHQ recorded Nov 6, 202651-200184 contacts →

Exact match

“Qualcom provides ultra secure managed IT services using a security first ethos which maximises IT uptime and ensures that data is protected and accessible 24/7.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchSao Paulo, BrazilHQ recorded Nov 6, 2026201-500166 contacts →

Exact match

“A BELLCOMSYS é uma empresa especializada em Tecnologia de Informação e suporte corporativo com 15 anos de experiência.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchEdegem, BelgiumHQ recorded Nov 6, 202651-200161 contacts →

Exact match

“As an IT service provider, NTX believes that you should be able to work with IT without worry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchSan Antonio, TX, United StatesHQ recorded Nov 6, 2026n/a159 contacts →

Exact match

“For over twenty five years, SD Tech has been providing IT Support for small and medium-sized businesses.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchReykjavík, IcelandHQ recorded Nov 6, 202651-200149 contacts →

Exact match

“OK er öflugt tölvufyrirtæki sem sérhæfir sig í þjónustu og rekstri tölvukerfa.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchReeuwijk, NetherlandsHQ recorded Nov 6, 202651-200140 contacts →

Exact match

“We are the experts in proactive management of complex IT environments.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-200137 contacts →

Exact match

“Deepscale Technologies provide data center, enterprise & managed IT solutions across the globe that enhance how businesses operate.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchNoida, IndiaHQ recorded Nov 6, 202651-200134 contacts →

Exact match

“TPMGuru is a leading provider of IT Support, managed services, repair and maintenance.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchMonterrey, MexicoHQ recorded Nov 6, 202611-50133 contacts →

Exact match

“Infraestructura y servicios profesionales: Servidores x86, x64, IA64 Almacenamiento, SAN, NAS, FC, iSCSI Redes, LAN, VLANs, VPNs Virtualización de Servidores, escritorios…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchSan Antonio, TX, United StatesHQ recorded Nov 6, 202651-200130 contacts →

Exact match

“Rx Technology is San Antonio’s premier family-owned technology partner, specializing in end-to-end IT lifecycle management.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchSão Paulo, BrazilHQ recorded Nov 6, 202651-200124 contacts →

Exact match

“Vivendo tecnologia: criando soluções!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchRuston, LA, United StatesHQ recorded Nov 6, 202651-200119 contacts →

Exact match

“HiTech Computers was founded in 1997 to provide the North Louisiana area with quality IT services.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchChattanooga, TN, United StatesHQ recorded Nov 6, 202651-200115 contacts →

Exact match

“MCA was founded in 1987 by Mike & Karen Collins.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchVista, CA, United StatesHQ recorded Nov 6, 202651-200115 contacts →

Exact match

“Abtech Technologies is a leading IT solutions, support and managed services provider based in Carlsbad California.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 8,373 systems administration services worldwide

See the full list, filter by size, metro and specialty, and access 15,737 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Systems administration services worldwide at a glance

As of Nov 6, 2026
25.1%Verified-email coverage
7.5Average contacts per company
1-10Median size (employees)
1.6%Largest-city concentration · Sao Paulo
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
5,880
11-50
2,044
51-200
245
201-500
52
501-1,000
12
1,001-5,000
9
10001+
1

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for systems administration services are linked below.
What qualifies
Company records worldwide whose business descriptions match “systems administration services” 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. 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 15,737 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 November 6, 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.

Systems administration services by location

35 lists · largest first

Every Systems administration services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 “systems administration services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many systems administration services are there worldwide?

RevenueBase identified 8,373 company matches for systems administration services worldwide as of November 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?

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

Which country has the most systems administration services?

The United States leads with 2,143 companies, followed by Brazil (536) and the United Kingdom (499). Every systems administration services list by country and city is linked on this page.

Which city has the most systems administration services?

Sao Paulo leads with 133 company records, followed by London (102) and New York (56).

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 15,737 professional contacts with verified work emails tracked across these 8,373 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 November 6, 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 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.