# 31 leading Telecommunications companies in Australia

Tamtam tracks 31 Telecommunications companies headquartered in Australia. This list ranks all of them by number of employees on LinkedIn, led by Telstra, Optus and nbn® Australia. Their median headcount is 448. Half of them were founded in 2007 or later. The most common headquarters are Melbourne (7), Sydney (5) and North Sydney (4).

These Australian telecommunications companies include major national carriers and specialized service providers. Among them, Telstra offers technology and content solutions with Australia's largest mobile network, while Optus provides mobile, internet, and business services to over 10 million customers. nbn® Australia operates the national broadband network, and TPG Telecom delivers mobile, internet, and fixed network solutions. Vocus is known for its extensive fiber network and subsea cables, and Aussie Broadband focuses on high-quality internet services and customer satisfaction.

The data shows a concentration of headquarters in Sydney and its surrounding areas, including Macquarie Park, North Sydney, Barangaroo, and Chatswood. Many of these firms were founded in the 21st century, indicating a period of significant growth and development in the Australian telecommunications sector.

🇦🇺 Australia · 31 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Telstra](https://www.tamtam.ai/c/telstra) (telstra.com.au)<br>Providing technology and content solutions for a connected future, with a focus on customer experience and Australia's largest mobile network | Telecommunications | 🇦🇺 Sydney | 35,493 | 1901 |
| 2 | [Optus](https://www.tamtam.ai/c/optus) (optus.com.au)<br>A leading Australian telecom company offering mobile, internet, entertainment, and business services to over 10 million customers with advanced technology and network coverage | Telecommunications | 🇦🇺 Macquarie Park | 11,040 | 1992 |
| 3 | [nbn® Australia](https://www.tamtam.ai/c/nbn-australia) (nbn.com.au)<br>Operates national broadband network enabling providers to deliver fast, reliable, secure internet services across Australia with community engagement. | Telecommunications | 🇦🇺 North Sydney | 5,287 | 2009 |
| 4 | [TPG Telecom](https://www.tamtam.ai/c/tpg-telecom) (tpgtelecom.com.au)<br>A leading telecommunications company in Australia offering mobile, internet, business, and fixed network solutions to consumers, businesses, and wholesale customers | Telecommunications | 🇦🇺 Barangaroo | 5,275 |  |
| 5 | [Vocus](https://www.tamtam.ai/c/vocus) (vocus.com.au)<br>Provides extensive fibre network and diverse connectivity solutions including subsea cables, private networks, and satellite services across Australia. | Telecommunications | 🇦🇺 Melbourne | 1,801 |  |
| 6 | [TPG](https://www.tamtam.ai/c/tpg-north-sydney) (tpg.com.au)<br>Leading provider of fixed broadband and communication services in Australia, offering NBN, ADSL2+, Fibre Optic, mobile plans, and networking solutions with own infrastructure and submarine cable connectivity | Telecommunications | 🇦🇺 North Sydney | 1,747 |  |
| 7 | [Vocus Group Limited](https://www.tamtam.ai/c/vocus-group-limited) (vocusgroup.com.au)<br>Provider of telecommunications infrastructure in Australia and New Zealand with a focus on simplicity, reliability, and automation to meet customer connectivity needs | Telecommunications | 🇦🇺 Melbourne | 1,714 |  |
| 8 | [Dodo Services](https://www.tamtam.ai/c/dodo-services) (dodo.com)<br>Provider of telecommunications, energy, and insurance services focused on competitive pricing, customer choice, and delivering great value in Australia. | Telecommunications | 🇦🇺 Melbourne | 1,526 | 2001 |
| 9 | [Sitel](https://www.tamtam.ai/c/sitel)<br>Specializing in site visits, designing and drafting telecommunication projects, conducting site inspections, issuing certificates, and preparing feasibility reports for various stages of work | Telecommunications | 🇦🇺 Sydney | 1,137 | 2017 |
| 10 | [Aussie Broadband](https://www.tamtam.ai/c/aussie-broadband) (aussiebroadband.com.au)<br>A growing internet service provider in Australia, offering high-quality internet services with a focus on customer satisfaction, local support, and community impact | Telecommunications | 🇦🇺 Morwell | 1,015 | 2003 |
| 11 | [iiNet](https://www.tamtam.ai/c/iinet) (iinet.net.au)<br>An Australian ISP offering ADSL2+ and nbn™ services with a focus on customer service and passion for connecting Australians better | Telecommunications | 🇦🇺 Perth | 829 |  |
| 12 | [AirTrunk](https://www.tamtam.ai/c/airtrunk) (airtrunk.com)<br>Rapidly expanding technology provider delivering hyperscale data centers across APJ to meet the needs of influential tech companies | Telecommunications | 🇦🇺 North Sydney | 776 | 2015 |
| 13 | [Superloop](https://www.tamtam.ai/c/superloop) (superloop.com)<br>Superloop unleashes the possibilities of the internet with carrier-grade networks, providing high-performance connectivity services for residential customers, businesses, and corporations in Australia | Telecommunications | 🇦🇺 Sydney | 771 | 2014 |
| 14 | [BSA Limited.](https://www.tamtam.ai/c/bsa-limited) (bsa.com.au)<br>Leading technical services company in Australia, offering flexible and tailored solutions based on extensive industry experience | Telecommunications | 🇦🇺 Chatswood | 503 | 2003 |
| 15 | [BAI Communications](https://www.tamtam.ai/c/bai-communications) (baicommunications.com)<br>Extensive broadcast network delivering TV and radio services, enabling 5G coverage, smart precincts, and mission-critical communications for various sectors. | Telecommunications | 🇦🇺 North Sydney | 483 |  |
| 16 | [VASP Group](https://www.tamtam.ai/c/vasp-group)<br>Specialists in designing, deploying, and integrating high performance telecommunications networks for various industries in Australasia, PNG, and the South Pacific | Telecommunications | 🇦🇺 Bella Vista | 448 |  |
| 17 | [NSW Telco Authority](https://www.tamtam.ai/c/nsw-telco-authority) (nsw.gov.au)<br>Operates and manages Public Safety Network for frontline responders, working on key NSW Government projects and coordinating connectivity strategy | Telecommunications | 🇦🇺 Sydney | 321 | 1992 |
| 18 | [amaysim](https://www.tamtam.ai/c/amaysim) (amaysim.com.au)<br>The company offers affordable big data mobile plans for free spirits, providing great value without hefty telco bills Feel the thrill with amaysim | Telecommunications | 🇦🇺 Sydney | 288 | 2010 |
| 19 | [Silcar](https://www.tamtam.ai/c/silcar) (thiess.com.au)<br>Provider of outsourcing maintenance services for various industries including power, manufacturing, mining, and automotive, with a focus on mechanical and electrical maintenance | Telecommunications | 🇦🇺 Burwood | 263 | 1993 |
| 20 | [Radlink Communications](https://www.tamtam.ai/c/radlink-communications) (radlink.com.au)<br>A leading Australian provider of wireless communication solutions, specializing in digital radio technologies for government, mining, oil & gas, and agriculture industries | Telecommunications | 🇦🇺 Perth | 262 | 2007 |
| 21 | [YY Digital](https://www.tamtam.ai/c/yy-digital) (yydigital.com)<br>YY Digital specializes in building enterprise mobile, tablet, and web applications with a focus on UI design and quality technical solutions | Telecommunications | 🇦🇺 Melbourne | 198 | 2011 |
| 22 | [More](https://www.tamtam.ai/c/more-melbourne) (more.com.au)<br>Premium provider of nbn®, phone, and mobile services in Australia, offering unlimited data plans, business-grade solutions, exclusive offers, and Telstra Wholesale Mobile Network coverage | Telecommunications | 🇦🇺 Melbourne | 195 |  |
| 23 | [5G Networks Ltd](https://www.tamtam.ai/c/5g-networks-ltd) (5gnetworks.au)<br>A licensed telecommunications carrier in Australia, offering data networks, cloud hosting, and managed services to mid market, enterprise, and government sectors | Telecommunications | 🇦🇺 Melbourne | 186 | 2016 |
| 24 | [Freshtel](https://www.tamtam.ai/c/freshtel) (freshtelholdings.com)<br>An Australian company specializing in developing and marketing VoIP products and services, allowing voice calls to be made over the Internet | Telecommunications | 🇦🇺 South Melbourne | 184 |  |
| 25 | [CPS Technology & Infrastructure Pty Ltd](https://www.tamtam.ai/c/cps-technology-and-infrastructure-pty-ltd) (cpstech.com.au)<br>A leading Australian telecommunications infrastructure deployment organization, providing reliable and cost-effective services to major carriers nationally and internationally since 1992 | Telecommunications | 🇦🇺 Bondi Junction | 172 | 1992 |
| 26 | [Sinch MessageMedia](https://www.tamtam.ai/c/sinch-messagemedia) (messagemedia.com)<br>Sinch MessageMedia provides mobile messaging solutions for businesses to connect with customers, offering integrations, bulk SMS, automated campaigns, alerts, and more | Telecommunications | 🇦🇺 Melbourne | 169 | 2000 |
| 27 | [Vodafone Business Australia](https://www.tamtam.ai/c/vodafone-business-australia) (vodafone.com.au)<br>Providing reliable connectivity solutions and support to businesses across industries for effective team communication and customer engagement. | Telecommunications | 🇦🇺 Barangaroo | 151 |  |
| 28 | [BAI Communications Australia (formerly Broadcast Australia)](https://www.tamtam.ai/c/bai-communications-australia-formerly-broadcast-australia) (broadcastaustralia.com.au)<br>Operates and develops a vital infrastructure network for broadcasting, telecommunications and government customers in Australia, providing transmission services for TV and radio | Telecommunications | 🇦🇺 Chatswood | 149 |  |
| 29 | [CITCC NIGERIA LIMITED](https://www.tamtam.ai/c/citcc-nigeria-limited) (citcc.ng)<br>We provide telecommunications infrastructure services, business process outsourcing, and application content in Africa, with a focus on developing communication networks globally | Telecommunications | 🇦🇺 Wuse I | 146 |  |
| 30 | [Symbios](https://www.tamtam.ai/c/symbios) (symbios.com.au)<br>An Australian outsourcing business specializing in Lead Generation and Outbound Sales, with offshore centers in the Middle East providing skilled agents | Telecommunications | 🇦🇺 Docklands | 65 | 2018 |
| 31 | [SiteSee](https://www.tamtam.ai/c/sitesee) (sitesee.io)<br>SiteSee provides the Telco industry with a Next Generation Digital Twin system for enhanced design and customer interaction | Telecommunications | 🇦🇺 Brisbane | 17 | 2016 |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.

## More company lists in Australia

- [The largest companies in Australia](https://www.tamtam.ai/l/largest-companies-australia) (5,556)
- [Multinational companies in Australia](https://www.tamtam.ai/l/multinational-companies-australia) (1,184)
- [Retail chains in Australia](https://www.tamtam.ai/l/retail-chains-australia) (577)
- [Financial services firms in Australia](https://www.tamtam.ai/l/financial-services-firms-australia) (483)
- [Critical infrastructure operators in Australia](https://www.tamtam.ai/l/critical-infrastructure-operators-australia) (450)
- [Education providers in Australia](https://www.tamtam.ai/l/education-companies-australia) (402)
- [Healthcare providers in Australia](https://www.tamtam.ai/l/healthcare-providers-australia) (397)
- [Professional services firms in Australia](https://www.tamtam.ai/l/professional-services-firms-australia) (377)
- [Financial Services companies in Australia](https://www.tamtam.ai/l/financial-services-companies-australia) (373)
- [Government Administration companies in Australia](https://www.tamtam.ai/l/government-administration-companies-australia) (351)
- [Public sector organisations in Australia](https://www.tamtam.ai/l/public-sector-organisations-australia) (326)
- [Manufacturers in Australia](https://www.tamtam.ai/l/manufacturers-australia) (320)
- [Companies with a mobile app in Australia](https://www.tamtam.ai/l/companies-with-mobile-app-australia) (305)
- [Publicly traded companies in Australia](https://www.tamtam.ai/l/publicly-traded-companies-australia) (299)
- [Hospitals and Health Care companies in Australia](https://www.tamtam.ai/l/hospitals-and-health-care-companies-australia) (297)
- [Corporate groups and holding companies in Australia](https://www.tamtam.ai/l/holding-companies-australia) (280)
- [E-commerce companies in Australia](https://www.tamtam.ai/l/ecommerce-companies-australia) (247)
- [Retail companies in Australia](https://www.tamtam.ai/l/retail-companies-australia) (243)
- [Companies with in-house R&D in Australia](https://www.tamtam.ai/l/r-and-d-companies-australia) (235)
- [IT Services and IT Consulting companies in Australia](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-australia) (215)
- [Consulting firms in Australia](https://www.tamtam.ai/l/consulting-firms-australia) (210)
- [Non-profit Organizations companies in Australia](https://www.tamtam.ai/l/non-profit-organizations-companies-australia) (190)
- [Hotel and hospitality groups in Australia](https://www.tamtam.ai/l/hospitality-groups-australia) (188)
- [Construction companies in Australia](https://www.tamtam.ai/l/construction-companies-australia) (186)

## The same list elsewhere

- [Telecommunications companies in the world](https://www.tamtam.ai/l/telecommunications-companies-in-the-world) (3,307)

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Source: https://www.tamtam.ai/l/telecommunications-companies-australia