ASIC

ASIC - Australian Securities and Investments Commission

Ultimate Holding Company

https://asic.gov.au/online-services/company-officeholders/company-officeholders-help/how-to-change-company-details-ultimate-holding-company/

Company name availability

https://asic.gov.au/for-business/registering-a-company/steps-to-register-a-company/company-name-availability/

https://asic.gov.au/online-services/business-names/business-names-help/

Register a company

https://asic.gov.au/for-business/registering-a-company/steps-to-register-a-company/