Company lists · Data refreshed September 2026

Top 25 System administration services based in Australia

Name: System administration services based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 256 companies tracked

RevenueBase identified 256 system administration services headquartered in Australia as of September 2026 and tracks 1,322 professional contacts across them, including 477 with verified work emails. Sydney is the largest hub.

This list covers system administration services headquartered in Australia, 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 22, 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 22, 2026 86% judged on-target in blind review

256Companies

1,322Contacts tracked

477Verified emails

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The 25 largest system administration services based in Australia

Ranked by team size

Top 25 of 256 system administration services based in Australia, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to system administration services: 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	Ongc Systems	Partial evidence	Arundel, AustraliaHQ checked Sep 22, 2026	n/a	166 contacts →
	Partial evidence “ONGC Systems provides businesses with comprehensive IT services, that automate and streamline operations, reduce risk and increase stability while lowering the cost of system…” Source: RevenueBase Database · checked Sep 22, 2026
2	Platinum Technology	Indirect evidence	Norwest, AustraliaHQ checked Sep 22, 2026	11-50	96 contacts →
	Indirect evidence “Welcome to Platinum Technology.” Source: RevenueBase Database · checked Sep 22, 2026
3	Active IT	Indirect evidence	Parramatta, AustraliaHQ checked Sep 22, 2026	n/a	72 contacts →
	Indirect evidence “Active IT is a team of qualified and experienced computer professionals dedicated to providing fast and reliable IT services and solutions for small-to-medium size businesses in…” Source: RevenueBase Database · checked Sep 22, 2026
4	Techpath	Indirect evidence	Slacks Creek, AustraliaHQ checked Sep 22, 2026	51-200	46 contacts →
	Indirect evidence “What we do TechPath empowers businesses and the people they employ through innovative IT strategies.” Source: RevenueBase Database · checked Sep 22, 2026
5	ONE IT Services	Indirect evidence	Darwin City, AustraliaHQ checked Sep 22, 2026	11-50	23 contacts →
	Indirect evidence “Architecting and developing innovative solutions for your technology environment is what has earned us our reputation.” Source: RevenueBase Database · checked Sep 22, 2026
6	Managed Solutions PTY LTD	Partial evidence	West Ipswich, AustraliaHQ checked Sep 22, 2026	11-50	23 contacts →
	Partial evidence “Managed Technology Services - IT systems and support, Networking, Voice, Internet Managed Solutions has a proven track record in providing technically appropriate, cost-effective…” Source: RevenueBase Database · checked Sep 22, 2026
7	Hotline IT PTY LTD	Indirect evidence	Belrose, AustraliaHQ checked Sep 22, 2026	11-50	21 contacts →
	Indirect evidence “When other network support companies put you on hold, Hotline IT puts you first.” Source: RevenueBase Database · checked Sep 22, 2026
8	Priority Networking	Indirect evidence	Balwyn North, AustraliaHQ checked Sep 22, 2026	11-50	21 contacts →
	Indirect evidence “More than just IT support – we help you operate and grow more efficiently and securely.” Source: RevenueBase Database · checked Sep 22, 2026
9	Iteam Consulting PTY LTD	Indirect evidence	Newport, AustraliaHQ checked Sep 22, 2026	11-50	20 contacts →
	Indirect evidence “Our services are designed to give business owners and managers peace of mind, you can ‘sleep easy’ knowing that your IT department is working around the clock, keeping the…” Source: RevenueBase Database · checked Sep 22, 2026
10	HD IT	Indirect evidence	Parramatta, AustraliaHQ checked Sep 22, 2026	11-50	19 contacts →
	Indirect evidence “Your focus is to run your business.” Source: RevenueBase Database · checked Sep 22, 2026
11	Bluepackets	Indirect evidence	Fyshwick, AustraliaHQ checked Sep 22, 2026	11-50	16 contacts →
	Indirect evidence “BluePackets is a service and solutions provider.” Source: RevenueBase Database · checked Sep 22, 2026
12	T4 Group	Indirect evidence	Box Hill South, AustraliaHQ checked Sep 22, 2026	11-50	16 contacts →
	Indirect evidence “T4 Group provides reliable, process-driven IT support for companies aiming to maximize their technology.” Source: RevenueBase Database · checked Sep 22, 2026
13	Excellence IT	Indirect evidence	Scoresby, AustraliaHQ checked Sep 22, 2026	11-50	15 contacts →
	Indirect evidence “We are professional level service providers for the day to day running of your IT setup, and Project Managing your long term IT infrastructure.” Source: RevenueBase Database · checked Sep 22, 2026
14	Virtual Graffiti Australia	Indirect evidence	Bondi Junction, AustraliaHQ checked Sep 22, 2026	1-10	14 contacts →
	Indirect evidence “Virtual Graffiti Australia Pty Limited is part of the Virtual Graffiti Group, which was first established in the USA in and now operates in three countries (USA, Australia and the…” Source: RevenueBase Database · checked Sep 22, 2026
15	Tech Away	Indirect evidence	Melbourne, AustraliaHQ checked Sep 22, 2026	1-10	13 contacts →
	Indirect evidence “Tech Away is a professional outsourced IT services company serving small businesses in Melbourne, Sydney and Brisbane, Australia.” Source: RevenueBase Database · checked Sep 22, 2026
16	Abit Systems Abit Consulting	Partial evidence	Rivervale, AustraliaHQ checked Sep 22, 2026	11-50	12 contacts →
	Partial evidence “ABit Systems was incorporated in January 2003.” Source: RevenueBase Database · checked Sep 22, 2026
17	Midnight IT	Indirect evidence	Toorak, AustraliaHQ checked Sep 22, 2026	11-50	12 contacts →
	Indirect evidence “From scheduled on-site maintenance to those unpredictable IT emergencies, our expert team can provide the support you need, when you need it the most.” Source: RevenueBase Database · checked Sep 22, 2026
18	Orbitel Technologies	Indirect evidence	Adelaide, AustraliaHQ checked Sep 22, 2026	11-50	12 contacts →
	Indirect evidence “At Orbitel Technologies, we keep your technology safe and secure, so you can focus on what matters-growing your business, getting back your time, and sleeping soundly at night.” Source: RevenueBase Database · checked Sep 22, 2026
19	Friendlyware Partners PTY LTD	Indirect evidence	Waverton, AustraliaHQ checked Sep 22, 2026	1-10	11 contacts →
	Indirect evidence “Established over 30 years ago, we are a close team of talented IT professionals who take pride in delivering the best possible service to our customers.” Source: RevenueBase Database · checked Sep 22, 2026
20	Nuclear IT	Indirect evidence	West Perth, AustraliaHQ checked Sep 22, 2026	11-50	11 contacts →
	Indirect evidence “IT environments are becoming more complex and increasingly crucial to your ongoing success.” Source: RevenueBase Database · checked Sep 22, 2026
21	Icare Cyber. By Itmd	Indirect evidence	Surry Hills, AustraliaHQ checked Sep 22, 2026	1-10	11 contacts →
	Indirect evidence “ITMD provides high-quality and cost-effective IT infrastructure and support services to assist our customers in securing, protecting and optimizing the value of their investments.” Source: RevenueBase Database · checked Sep 22, 2026
22	4data IT	Indirect evidence	Queanbeyan West, AustraliaHQ checked Sep 22, 2026	11-50	11 contacts →
	Indirect evidence “Are you sick and tired of dealing with computer guys that are impossible to reach, won't follow through, can't fix things right, and penny pinch you for everything that they do?” Source: RevenueBase Database · checked Sep 22, 2026
23	Partner IT	Indirect evidence	Unanderra, AustraliaHQ checked Sep 22, 2026	11-50	10 contacts →
	Indirect evidence “With a client focused methodology and strong knowledge of the IT industry, Partner IT delivers creative solutions via innovative technologies.” Source: RevenueBase Database · checked Sep 22, 2026
24	T4b	Indirect evidence	Chelsea Heights, AustraliaHQ checked Sep 22, 2026	11-50	10 contacts →
	Indirect evidence “If your business needs assistance with IT, you've come to the right place.” Source: RevenueBase Database · checked Sep 22, 2026
25	Portable Systems	Partial evidence	Armidale, AustraliaHQ checked Sep 22, 2026	1-10	10 contacts →
	Partial evidence “Portable Systems is an information technology and services company based out of Armidale Business Centre, Cinders Lane, Armidale, Australia.” Source: RevenueBase Database · checked Sep 22, 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: system administration services. 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 system administration services.
Partial evidence: Its own public description names part of system administration services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name system administration services. 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 256 system administration services based in Australia

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System administration services based in Australia at a glance

As of Sep 22, 2026

36.1%Verified-email coverage

5.2Average contacts per company

1-10Median size (employees)

9.0%Largest-city concentration · Sydney

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

190

11-50

51-200

501-1,000

Email recency for this list is measured worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 256 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 system administration services, 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 Australia whose own description of what they do matches “system administration services”. 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 system administration services), 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 system administration services, and records with no verified work email. Companies headquartered outside Australia 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, 477 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 22, 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 system administration services, 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 system administration services are there based in Australia?

RevenueBase identified 256 system administration services headquartered in Australia 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?

Ongc Systems, headquartered in Arundel, tops this list with the largest team on record.

Which city has the most system administration services?

Sydney leads with 23 headquartered companies, followed by Melbourne (20) and Perth (15).

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 477 verified decision-maker contacts tracked across these 256 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 22, 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.