| TUNG BO TELECOM (HOLDINGS) LIMITED | Private company limited by shares | Live |
| CHINA UNITED TELECOM (HOLDINGS) LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL TELECOM HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| WHOLESWITCH TELECOM HOLDINGS LIMITED | Private company limited by shares | Live |
| YUHUA TELECOM HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| HONA Telecom Limited | Private company limited by shares | Live |
| Honcen Telecom International Limited | Private company limited by shares | Dissolved |
| DRAGON HONEST ASIA TELECOM LIMITED | Private company limited by shares | Dissolved |
| HONG YI TELECOM LIMITED | Private company limited by shares | Dissolved |
| AECT (HONG KONG) TELECOM LIMITED | Private company limited by shares | Dissolved |
| ALPHANET TELECOM (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Apps Telecom Hong Kong Limited | Private company limited by shares | Live |
| HONG KONG ASIA TELECOM LIMITED | Private company limited by shares | Live |
| Bester Telecom Hong Kong Limited | Private company limited by shares | Live |
| HONG KONG CHENGJI TELECOM LIMITED | Private company limited by shares | Live |
| CHINA AND HONG KONG TELECOM ENGINEERING COMPANY LIMITED | Private company limited by shares | Live Commenced dormancy on 20-Nov-2015 |
| NEW CHINA HONG KONG TELECOM LIMITED -THE- | Private company limited by shares | Dissolved |
| HONG KONG CHINA TELECOM COMPANY LIMITED | Private company limited by shares | Dissolved |
| CHINA TELECOM (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| CHINA VIRTUAL TELECOM (HONG KONG) LIMITED | Private company limited by shares | Live |
| CHUNGHWA TELECOM (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| HONG KONG HOPE TELECOM CO., LIMITED | Private company limited by shares | Live |
| DSI TELECOM HONG KONG CO., LIMITED | Private company limited by shares | Live |
| XIN WEI (HONG KONG) TELECOM CO., LIMITED | Private company limited by shares | Live |
| BD Telecom (Hong Kong) Co., Limited | | Live |
| HONG KONG SUNRISE TELECOM CO., LIMITED | Private company limited by shares | Live |
| CROWN TELECOM HONG KONG LIMITED | Private company limited by shares | Live |
| Dlee Telecom Hong Kong Limited | Private company limited by shares | Live |
| HONG KONG DONGCHAO TELECOM LIMITED | Private company limited by shares | Live |
| Telecom Easy Hong Kong Limited | Private company limited by shares | Live |
| HONG KONG ESIM TELECOM LIMITED | Private company limited by shares | Live |
| ETROSS TELECOM (HONG KONG) LIMITED | Private company limited by shares | Live |
| HONG KONG TELECOM EXCHANGE LIMITED | Private company limited by shares | Live |
| EXPRESS TELECOM (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Fala Telecom Limited | Private company limited by shares | Live |
| FAXTECH TELECOM HONG KONG LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Feiqingda Telecom Limited | Private company limited by shares | Live |
| HONG KONG FIRST TELECOM LIMITED | Private company limited by shares | Dissolved |
| FUYE TELECOM HOLDING (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| GALAXY TELECOM (HONG KONG) LIMITED | Private company limited by shares | Live |
| GLOBSTAR TELECOM (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| HONG KONG TELECOM GROUP LIMITED | Private company limited by shares | Dissolved |
| TELECOM HONG KONG GROUP LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Guangdong Telecom Co., Limited | | Live |
| HONG KONG HAIKUO TELECOM CO., LIMITED | Private company limited by shares | Live |
| Haowei Telecom Hong Kong Limited | Private company limited by shares | Live |
| Headway Telecom (Hong Kong) Co. Limited | Private company limited by shares | Live |
| Resources Hong Kong Henderson Telecom Limited | Private company limited by shares | Live |
| HONG KONG HITECH TELECOM COMPANY LIMITED | Private company limited by shares | Dissolved |
| HONG KONG HUICHEN TELECOM COMPANY LIMITED | Private company limited by shares | Live |
| HYBRID TELECOM (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| TELECOM INDUSTRIAL COMPANY (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| HONG KONG TELECOM INFRASTRUCTURE LIMITED | Private company limited by shares | Dissolved |
| INNOCOM TELECOM HONG KONG LIMITED | Private company limited by shares | Dissolved |
| Hong Kong Innovative Technology Telecom Company Limited | Private company limited by shares | Live |
| TELECOM HONG KONG INVESTMENT LIMITED | Private company limited by shares | Live |
| AVR TELECOM (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| HONG KONG J & D TELECOM COMPANY LIMITED | Private company limited by shares | Dissolved |
| DBA TELECOM HONG KONG LIMITED | Private company limited by shares | Dissolved |
| SGI TELECOM (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| HONG KONG TELECOM CSL LIMITED | Private company limited by shares | Live Commenced dormancy on 17-Mar-2000 |
| HONG KONG TELECOM IMS LIMITED | Private company limited by shares | Live Commenced dormancy on 17-Mar-2000 |
| HONG KONG TELECOM CAS LIMITED | Private company limited by shares | Live Commenced dormancy on 17-Mar-2000 |
| HONG KONG TELECOM VOD LIMITED | Private company limited by shares | Live Commenced dormancy on 17-Mar-2000 |
| NAM TAI TELECOM (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live Commenced dormancy on 18-Aug-2005 |
| SUN TELECOM (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| ATL TELECOM HONG KONG LIMITED | Private company limited by shares | Live |
| GSM TELECOM (HONG KONG) COMPANY LIMITED | Private company limited by shares | Dissolved |
| AIP TELECOM (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| ASC TELECOM HONG KONG LIMITED | Private company limited by shares | Dissolved |
| Sun Telecom (Hong Kong) Limited | Private company limited by shares | Dissolved |
| MT TELECOM HONG KONG LIMITED | Private company limited by shares | Live |
| HONG KONG BAI LUN TELECOM LIMITED | Private company limited by shares | Live |
| JXT TELECOM (HONG KONG) LIMITED | Private company limited by shares | Live |
| IM Telecom (Hong Kong) Company Limited | Private company limited by shares | Live |
| HONG KONG ONE TELECOM LIMITED | Private company limited by shares | Live |
| CK TELECOM (HONG KONG) LIMITED | Private company limited by shares | Live |
| Hong Kong San Ai Telecom Limited | Private company limited by shares | Live |
| MSG Telecom Hong Kong Limited | Private company limited by shares | Live |
| CM Telecom Hong Kong Limited | Private company limited by shares | Live |
| Telecom Hong Kong ITL Limited | Private company limited by shares | Live |
| HZ TELECOM HONG KONG LIMITED | Private company limited by shares | Live |
| COA Telecom (Hong Kong) Limited | | Live |
| B & W (Hong Kong) Telecom Limited | | Live |
| AMBITION (HONG KONG) TELECOM LIMITED | Private company limited by shares | Dissolved |
| AVENIR TELECOM HONG KONG LIMITED | Private company limited by shares | Dissolved |
| Cubic Telecom Hong Kong Limited | Private company limited by shares | Live |
| DRAGON (HONG KONG) TELECOM LIMITED | Private company limited by shares | Dissolved |
| FIRST TELECOM (HONG KONG) LIMITED | Private company limited by shares | Live |
| ICON TELECOM (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| Ming Zhi (Hong Kong) Telecom Limited | Private company limited by shares | Live |
| MORE TELECOM (HONG KONG) LIMITED | Private company limited by shares | Live |
| OBSERVA TELECOM HONG KONG LIMITED | Private company limited by shares | Live |
| SIMONS TELECOM SCITECH (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| SINGAPORE TELECOM HONG KONG LIMITED | Private company limited by shares | Live |
| NEW SMOOTHLY TELECOM (HONG KONG) LIMITED | | Live |
| SPLENDID WISDOM TELECOM HONG KONG LIMITED | Private company limited by shares | Live |
| Netfield Telecom Technology (Hong Kong) Limited | Private company limited by shares | Dissolved |
| Zoomlion Telecom Technology (Hong Kong) Limited | Private company limited by shares | Live |
| TECH-TRANS TELECOM (HONG KONG) LIMITED | Private company limited by shares | Live Commenced dormancy on 13-Mar-2007 |