MSP Pie currently has 7 Telstra providers listed in Australia. Telstra is a technology vendor whose products some providers specialise in deploying and managing. For context: comparing providers here usually means checking their actual partner tier or certification level with this vendor, not just that they mention it.
The most common specialisms across the list in Australia are Cyber security (3), Managed IT and helpdesk (3), Cloud and hosting (2), Network management (2), Telecommunications (1). In total, 15 distinct specialisms are represented across this group of providers in Australia. Founding years among them range from 1990 to 2009. They are based across 6 different suburbs: Sydney, Surry Hills, Milton, Perth, Jolimont, West Leederville. 1 of the 7 operate from more than one office across Australia.