Yoong Keong Lew

Asiacom Philippines, Inc. is an investment holding company, which specializes in providing telecommunications services. The company is headquartered in Makati, Philippines.

Unwired Australia Pty Ltd. provides wireless broadband services. The company is headquartered in Sydney, Australia.

Alphawest Services Pty Ltd. provides integrated information and communication technology solutions to private businesses, public companies, and government organizations. It offers security services, managed services, and information and process management. The company was founded in 1986 and is headquartered in Sydney, Australia.

Alphawest Pty Ltd. is a private group based in Perth, Australia, led by the management of Alphawest Pty Ltd.

Inform Systems Australia Pty Ltd. provides IT services. The company is headquartered in Sydney, Australia.

Part of Singapore Telecommunications Ltd., Reef Networks Pty Ltd. is an Australian company that specializes in fiber optic networks for the telecommunications industry. The private company is based in Macquarie Park, Australia. Reef Networks was acquired by Optus Communications Pty Ltd. on March 31, 2005 for $71.88 million.

Virgin Mobile (Australia) Pty Ltd. provides mobile telecommunications services. Its services include mobile games, screensavers, and voicemail. The firm also provides comprehensive phone insurance. The company was founded on October 31, 2000 and is headquartered in Sydney, Australia.

Part of Singapore Telecommunications Ltd., Optus C1 Satellite Pty Ltd. is an Australian company that specializes in satellites.

Part of Singapore Telecommunications Ltd., Optus Administration Pty Ltd. is an Australian telecommunications company that provides solutions. The private company is based in Macquarie Park, Australia.

Part of Singapore Telecommunications Ltd., Optus Billing Services Pty Ltd. provides telecommunication services.

Optus Mobile Pty Ltd. engages in the provision of telecommunication services for mobile phones. The company is headquartered in Sydney, Australia.

Part of Singapore Telecommunications Ltd., Optus Systems Pty Ltd. provides management services. The private company is based in Macquarie Park, Australia.

Founded in 1994, Optus Vision Pty Ltd. is a subsidiary of Singapore Telecommunications Ltd. that provides television and cable broadcasting services. The private company is based in Macquarie Park, Australia.

Optus Finance Pty Ltd. manages the Singtel Optus Group’s treasury activities, including borrowing on behalf of the Singtel Optus Group and advancing such borrowings to companies within the Singtel Optus Group. The company was founded on March 11, 1999 and is headquartered in Sydney, Australia.

Amobee, Inc. operates as a marketing technology company. It provides data driven cross channel digital advertising solutions for agencies, brands, and publishers. The company was founded in June 2005 and is headquartered in Foster City, CA.

GRID Communications Pte Ltd. operates as a public telecommunications walkie talkie network operator. It offers push-to-talk, walkie-talkie, mobile phone, business, rental and data services. The company is headquartered in Singapore.

vividwireless has transformed the way Australians access the Internet, by providing a seriously fast, consistent and reliable wireless broadband service at home, at work or out and about within their coverage area. They are wholly owned by Seven Group Holdings Limited, one of Australia's leading media companies. As well as owning Australia's largest commercial television network and two of the nation's largest magazine publishers, Seven has a significant presence in online and new communication technology companies.

Part of Singapore Telecommunications Ltd., BKAL Pty Ltd. provides wireless broadband services. The private company is based in Eveleigh, Australia.

Founded in 2000, Optus Satellite Pty Ltd. is a subsidiary of Singapore Telecommunications Ltd. that provides satellite communication services. The private company is based in Macquarie Park, Australia.

Part of Singapore Telecommunications Ltd., Singapore Telecom Australia Investments Pty Ltd. provides telephone voice and data communications services. The private company is based in Sydney, Australia and was founded in 2001.

Part of Singapore Telecommunications Ltd., Uecomm Operations Pty Ltd. is an Australian company that provides communication maintenance services. The private company is based in Macquarie Park, Australia and was founded in 2000.

Virgin Mobile Pty Ltd. provides mobile network telecommunication services. The private company is based in Macquarie Park, Australia.

DSpark Pty Ltd., a subsidiary of Singapore Telecommunications Ltd., is a company headquartered in Macquarie Park, Australia, that offers mobility data and telco from applications, reports & APIs to consulting solutions.

Sentosa Development Corp. is a private company based in Singapore, Singapore that manages Sentosa Island, a popular tourist destination. The island is home to various attractions, including themed attractions, spas, rainforests, beaches, and hotels. Sentosa Development is ultimately controlled by the Government of Singapore. Kwee Eng Thien has been the CEO of the Singaporean company since 2020.