Mobile Telecommunications Services
- CSL Limited (Formerly known as Hong Kong CSL Limited)
- Hutchison Telephone Company Limited
- Hong Kong Telecommunications (HKT) Limited
- SmarTone Mobile Communications Limited
- CSL Limited (Formerly known as New World PCS Limited)
- China Mobile Hong Kong Company Limited
Fixed Telecommunications Services
- ComNet Telecom (HK) Limited
- HGC Global Communications Limited (formerly known as "Hutchison Global Communications Limited")
- HKBN Enterprise Solutions Limited (formerly known as "New World Telecommunications Limited")
- Hong Kong Broadband Network Limited
- PCCW-HKT Telephone Limited and Hong Kong Telecommunications (HKT) Limited
- SmarTone Communications Limited
- Xenith IG Hong Kong Limited (formerly known as "Superloop (Hong Kong) Limited")
- Tata Communications (Hong Kong) Limited
- HKBN Enterprise Solutions HK Limited (formerly known as "WTT HK Limited")
