Company lists · Data verified August 2026

Top 25 Enterprise telecom consulting companies based in Australia

Name: Enterprise telecom consulting companies based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 358 companies tracked

There are 358 enterprise telecom consulting companies headquartered in Australia (RevenueBase, August 2026). RevenueBase tracks 3,883 professional contacts across them, including 1,256 with verified work emails and 226 with mobile numbers. Melbourne is the largest hub.

This list covers enterprise telecom consulting companies headquartered in Australia, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

358Companies

3,883Contacts tracked

1,256Verified emails

226Mobile numbers

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The 25 largest enterprise telecom consulting companies based in Australia

Ranked by team size

Top 25 of 358 enterprise telecom consulting companies based in Australia, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Efiniti Telecommunications Services PTY LTD	Macquarie Park	201-500	133	67
2	Outcomex	South Melbourne	51-200	115	81
3	Gibson Quai International GQI	Perth	51-200	111	52
4	Abishar Technologies	Melbourne	201-500	104	9
5	Koinonia Enterprises	Revesby	51-200	95	32
6	Titan ICT	North Sydney	501-1,000	68	57
7	Buroserv Australia PTY LTD	Chatswood	51-200	68	30
8	ISA Technologies	Perth	51-200	62	13
9	4tel	Newcastle	51-200	53	37
10	Iptel Solutions PTY LTD	Brisbane	51-200	53	24
11	Reliance Communications PTY LTD	Sydney	11-50	50	8
12	Dipole Group	North Sydney	51-200	49	19
13	Next Telecom	Notting Hill	51-200	46	19
14	Over The Wire	Sydney	201-500	44	21
15	Jasco Consulting	Melbourne	51-200	42	35
16	Ccna Converged Communication Network Applications	Perth	51-200	40	18
17	Iscs Technologies Private Limited	Essendon North	51-200	39	3
18	C5 Technology	Brisbane City	11-50	35	25
19	ITMA	Belmont	11-50	35	8
20	Rubicon 8	Mont Albert	51-200	34	19
21	VIS Global PTY LTD	Melbourne	11-50	34	8
22	TGS Enterprise Networks Official	Leeming	51-200	34	1
23	Connectiv	Perth	11-50	33	30
24	QBT Consulting	Frenchs Forest	11-50	31	27
25	Wizzio	Sydney	51-200	31	12

Showing 25 of 358 enterprise telecom consulting companies based in Australia

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Enterprise telecom consulting companies based in Australia at a glance

As of Aug 28, 2026

11-50Median size (employees)

MelbourneLargest hub · 54 HQs

226Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

174

11-50

134

51-200

201-500

501-1,000

1,001-5,000

Enterprise telecom consulting companies by metro

Metro	Companies
Enterprise telecom consulting companies in Melbourne	54
Enterprise telecom consulting companies in Sydney	47
Enterprise telecom consulting companies in Brisbane	18
Enterprise telecom consulting companies in Perth	10
Enterprise telecom consulting companies in Adelaide	9
Enterprise telecom consulting companies in North Sydney	8
Enterprise telecom consulting companies in Canberra	6
Enterprise telecom consulting companies in South Melbourne	5

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “enterprise telecom consulting companies”, with match quality audited by blind human judging, and headquartered in Australia.
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: Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many enterprise telecom consulting companies are there based in Australia?

There are 358 enterprise telecom consulting companies headquartered in Australia as of August 2026 (RevenueBase).

What is the largest company on this list?

Efiniti Telecommunications Services PTY LTD, headquartered in Macquarie Park, tops this list with the largest team on record.

Which city has the most enterprise telecom consulting companies?

Melbourne leads with 54 headquartered companies, followed by Sydney (47) and Brisbane (18).

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 1,256 verified decision-maker contacts tracked across these 358 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.