Company lists · Data refreshed November 2026

Top 25 System administrators worldwide

RevenueBase identified 4,567 company matches for system administrators worldwide as of November 2026 and tracks 28,262 professional contacts across them, including 7,348 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for system administrators 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 system administrators 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
4,567Companies
28,262Contacts tracked
7,348Verified emails
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The 25 largest system administrators worldwide

Ranked by team size
Top 25 of 4,567 company matches for system administrators 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 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
3Exact 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
4Exact 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
5Exact 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
6Exact 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
7Exact 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
8Exact 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
9Exact 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
10Exact 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
11Exact 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
12Exact matchSundbyberg, SwedenHQ recorded Nov 6, 202651-200111 contacts →

Exact match

“Vi är den lagom stora drift och helhetsleverantören och vårt uppdrag är att erbjuda komplett IT-avdelning som tjänst och andra driftlösningar inom IT.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchBrooklyn, NJ, United StatesHQ recorded Nov 6, 2026201-500107 contacts →

Exact match

“HOCS CONSULTING has been in the business of helping small, medium and large sized business with their IT IT Support needs in New York since 1991.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchMakati City, PhilippinesHQ recorded Nov 6, 202651-200106 contacts →

Exact match

“Automated Technologies, Inc.(ATI) is part of the Zenutna Holdings Corporation (ZHC), a 100% wholly Filipino-owned Information Technology (IT) company with nationwide operations…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchZagreb, CroatiaHQ recorded Nov 6, 202611-5095 contacts →

Exact match

“Integra Group was founded in 1990 as a service oriented company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchLommel, BelgiumHQ recorded Nov 6, 202611-5084 contacts →

Exact match

“LNS heeft als doel een "single point of contact" te vormen voor de kleine tot middel-grote KMO.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchUnited StatesHQ recorded Nov 6, 202651-20078 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchWooburn Green, United KingdomHQ recorded Nov 6, 202651-20076 contacts →

Exact match

“CST is an I.T.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchBuenos Aires, ArgentinaHQ recorded Nov 6, 202651-20074 contacts →

Exact match

“The technology industry is undergoing an undisputable transformation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchAustin, TX, United StatesHQ recorded Nov 6, 202611-5072 contacts →

Exact match

“SMARTECH is the premier provider of complimentary maintenance services to world-class service organizations.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchFlorham Park, NJ, United StatesHQ recorded Nov 6, 202651-20070 contacts →

Exact match

“Online Computers began with a mission to help businesses get a real return on their technology investments.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchBelfast, United KingdomHQ recorded Nov 6, 202651-20070 contacts →

Exact match

“We create, design, deliver and support informed & intelligent strategies to navigate shifting technology, keeping organisations like yours effective & secure.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchSparks Glencoe, MD, United StatesHQ recorded Nov 6, 202611-5064 contacts →

Exact match

“In a world where technology moves fast, DTC keeps the human connection at the heart of every solution.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchFairlawn, OH, United StatesHQ recorded Nov 6, 2026n/a64 contacts →

Exact match

“Think of us as your dedicated outsourced IT department, always ready to address issues promptly, often before you are even aware of them.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchPerth, AustraliaHQ recorded Nov 6, 202651-20057 contacts →

Exact match

“We care about two things: our clients and our people.”

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

Showing 25 of 4,567 system administrators worldwide

See the full list, filter by size, metro and specialty, and access 7,348 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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System administrators worldwide at a glance

As of Nov 6, 2026
26.0%Verified-email coverage
6.2Average contacts per company
1-10Median size (employees)
1.5%Largest-city concentration · Sao Paulo
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
3,255
11-50
1,057
51-200
132
201-500
32
501-1,000
5
1,001-5,000
6
5,001-10,000
1
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 system administrators are linked below.
What qualifies
Company records worldwide whose business descriptions match “system administrators” 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 7,348 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.

System administrators by location

22 lists · largest first

Every System administrators 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 “system administrators”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many system administrators are there worldwide?

RevenueBase identified 4,567 company matches for system administrators 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 system administrators?

The United States leads with 1,059 companies, followed by the United Kingdom (324) and Brazil (303). Every system administrators list by country and city is linked on this page.

Which city has the most system administrators?

Sao Paulo leads with 67 company records, followed by London (56) and New York (21).

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 7,348 professional contacts with verified work emails tracked across these 4,567 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.