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ISP & Telecom Directory · Hong Kong

Hong Kong Telecom & ISP Providers Starting With C

Registered contact details for the 67 OFCA-licensed operators whose name begins with the letter C, from the OFCA register as of 10 September 2026. Address requests to the registered address on the licence. No law-enforcement desk is published in this data, so confirm the right legal or compliance contact with the operator before sending. Verify against the live register before serving legal process.

Showing 1–60 of 67 entries

Cenbong Int'l Holdings Limited

SBO Class 3 (ETS)
Address
ROOM S032, 2/F, THE CAPITAL, 61-65 CHATHAM ROAD SOUTH, TSIM SHA TSUI, KOWLOON
Regulator reference
SBO-1546

Centrex Telecom Company Limited

SBO Class 3 (ETS)
Address
Unit 1603, 16th Floor, The L. Plaza, 367-375 Queen's Road Central, Sheung Wan, Hong Kong
Regulator reference
SBO-1169

Cherry Nova Limited

SBO Class 3 (ISP)
Address
Room 1804, 18/F, K11 Atelier, 18-24 Salisbury Road, Tsim Sha Tsui, Kowloon
Regulator reference
SBO-2012

China CTTIC HK Co., Limited

SBO Class 3 (IVANS)
Address
Unit 6A, 22nd Floor, West Tower, Shun Tak Centre, 168-200 Connaught Road Central, Hong Kong
Regulator reference
SBO-1671

CHINA IPX Communication Limited

SBO Class 3 (ISP)
Address
Room 1104A, 11/F, Kai Tak Commercial Building, 317-319 Des Voeux Road Central, Sheung Wan, Hong Kong
Regulator reference
SBO-1866

China Mobile Hong Kong Company Limited

Unified Carrier Licence
Also registered as
SBO Class 3 (ETS); SBO Class 3 (ISP)
Phone
12580
Address
Level 20, Tower 1, Kowloon Commerce Centre, No. 51 Kwai Cheong Road, Kwai Chung, New Territories
Regulator reference
UCL-002; SBO-0473; SBO-0648; SBO-1175

China Mobile International Limited

Unified Carrier Licence
Also registered as
SBO Class 2 (local voice telephony); SBO Class 3 (ISP; MVNO)
Address
29/F & 30/F, Tower 1, Kowloon Commerce Centre, 51 Kwai Cheong Road, Kwai Chung, New Territories, Hong Kong
Regulator reference
UCL-035; SBO-0022

China Telecom Global Limited

Unified Carrier Licence
Also registered as
SBO Class 3 (ISP; MVNO; ETS)
Address
19/F, 21/F, 28/F, 29/F, 30/F, Everbright Centre, 108 Gloucester Road, Wan Chai, Hong Kong
Regulator reference
UCL-017; SBO-1114

China Unicom (Hong Kong) Operations Limited

Unified Carrier Licence
Also registered as
SBO Class 2 (local voice telephony); SBO Class 3 (IVANS); SBO Class 3 (ISP; MVNO; ETS)
Address
28/F, Tower 1, The Gateway, 25 Canton Road, Tsim Sha Tsui, Kowloon
Regulator reference
UCL-052; SBO-0023; SBO-0922

CHINA-HONGKONG TELECOM LIMITED

SBO Class 3 (MVNO; ETS)
Address
Rm. 01, 02, 14, 15, 37/F, Hong Kong Plaza, 188 Connaught Road West, Western District, Hong Kong
Regulator reference
SBO-0951

Chubb Hong Kong Limited

SBO Class 3 (alarm)
Address
Room 708, 7/F., Guardforce Centre, 3 Hok Yuen Street East, Hung Hom, Kowloon
Regulator reference
SBO-0686

CITIC Telecom International (Data) Limited

SBO Class 3 (ISP)

Also known as: CITIC Telecom International Limited

Also registered as
SBO Class 3 (ISP; MVNO; ETS)
Address
25/F., CITIC Telecom Tower, 93 Kwai Fuk Road, Kwai Chung, N.T
Regulator reference
SBO-0712; SBO-1015

CITIC Telecom International CPC Limited

Unified Carrier Licence
Also registered as
SBO Class 3 (ISP; ETS)
Address
20/F, Lincoln House, Taikoo Place, 979 King’s Road, Quarry Bay, Hong Kong
Regulator reference
UCL-063; SBO-0436

Cloud Intelligence Limited

SBO Class 3 (ISP)
Address
31/F., Tower One, Times Square, 1 Matheson Street, Causeway Bay, Hong Kong
Regulator reference
SBO-1774

CLOUD NET OPERATIONS LIMITED

SBO Class 3 (ISP)
Address
Unit 05, 13/F, Laws Commercial Plaza, 788 Cheung Sha Wan Road, Kowloon
Regulator reference
SBO-1982

Cloud Net Technologies Limited

SBO Class 3 (ISP)
Address
Flat 05, 13/F, Laws Commercial Plaza, 788 Cheung Sha Wan Road, Kowloon
Regulator reference
SBO-1764

CloudRadium (HK) Limited

SBO Class 3 (ISP)
Address
Flat D, 23/F, Mai On Industrial Building, 17-21 Kung Yip Street, Kwai Chung, N.T
Regulator reference
SBO-1984

CLUSTERTECH LIMITED

SBO Class 3 (IVANS)
Address
Room 211–213, 2/F, Lakeside 1, No. 8 Science Park West Avenue, Hong Kong Science Park, Shatin, N.T
Regulator reference
SBO-1642

CM Telecom Hong Kong Limited

SBO Class 3 (ETS; IVANS)
Address
Unit 501, 5/F., Valley Centre, No. 80 - 82 Morrison Hill Road, Wan Chai, Hong Kong
Regulator reference
SBO-1947

CN Care Cyber Cloud Limited

SBO Class 3 (ISP; teleconferencing)
Address
Unit 03, 27/F, Metropolis Tower, 6-10 Metropolis Drive, Hung Hom, Kowloon
Regulator reference
SBO-1769

Coastnet Communication (HK) Limited

SBO Class 3 (ISP; ETS)
Address
Unit No. A222, 3F, Hang Fung Industrial Building Phase 2, No. 2G Hok Yuen Street, Hung Hom, Kowloon
Regulator reference
SBO-1557

Cocoa Oriental Network Limited

SBO Class 3 (ISP)
Address
Room 2703, 27/F, Skyline Tower, 39 Wang Kwong Road, Kowloon Bay, Kowloon
Regulator reference
SBO-1728

Colosite HK Limited

SBO Class 3 (IVANS)
Address
Rooms 05-15, 13A/F, South Tower, World Finance Centre, Harbour City, 17 Canton Road, Tsim Sha Tsui, Kowloon
Regulator reference
SBO-1421

Colt Technology Services Limited

SBO Class 3 (ISP)
Address
Suites 906-7, 9/F, Lincoln House, Taikoo Place, 979 King's Road, Quarry Bay, Hong Kong
Regulator reference
SBO-1673

Comba Telecom Limited

SBO Class 3 (ISP)
Address
Flat 606-7, 5W Building, Hong Kong Science Park, Pak Shek Kok, Shatin, N.T
Regulator reference
SBO-1790

Commerce One Limited

SBO Class 3 (ETS; IVANS)
Address
Flat E, 17/F, Neich Tower, 128 Gloucester Road, Wanchai, Hong Kong
Regulator reference
SBO-1624

ComNet Telecom (HK) Limited

Unified Carrier Licence
Address
25/F, CITIC Telecom Tower, 93 Kwai Fuk Road, Kwai Chung, New Territories, Hong Kong
Regulator reference
UCL-060

Company TTK Asia Limited

SBO Class 3 (ISP)
Address
Unit 503, 5/F., Silvercord Tower 2, 30 Canton Road, TST, Kowloon
Regulator reference
SBO-1614

Computerline (Hong Kong) Limited

SBO Class 3 (IVANS)
Address
Suite 1701-02, 17/F, FWD Financial Centre, 308 Des Voeux Road Central, Hong Kong
Regulator reference
SBO-1679

Connet Limited

SBO Class 3 (ISP)
Address
22/F., China Online Centre, 333 Lockhart Road, Wan Chai, Hong Kong
Regulator reference
SBO-1253

Connex Technology Limited

SBO Class 3 (ISP)
Address
West Wing 2/F, 822 Lai Chi Kok Road, Cheung Sha Wan, Kowloon
Regulator reference
SBO-1992

Console Connect (HK) Limited

Unified Carrier Licence
Address
39th Floor, PCCW Tower, Taikoo Place, 979 King’s Road, Quarry Bay, Hong Kong
Regulator reference
UCL-074

CONVERGE TELECOM LIMITED

SBO Class 3 (ETS)
Address
Room 1115, 11/F., China United Plaza, No. 1008 Tai Nan West Street, Lai Chi Kok, Kowloon
Regulator reference
SBO-1396

Core Winner Co., Limited

SBO Class 3 (ISP)
Address
Room 13, 27/F, Ho King Commercial Centre, 2-16 Fa Yuen Street, Mongkok, Kowloon
Regulator reference
SBO-1911

CSL Mobile Limited

SBO Class 3 (MVNO)
Address
39/F, PCCW Tower, Taikoo Place, 979 King’s Road, Quarry Bay, Hong Kong
Regulator reference
SBO-1981

CTCSCI TECH LIMITED

SBO Class 3 (ISP)
Address
Room 023, 9/F., Block G, Kwai Shing Industrial Building (Stage 2), 42-46 Tai Lin Pai Road, Kwai Chung, N.T., Hong Kong
Regulator reference
SBO-1906

CTG Server Limited

SBO Class 3 (ISP)
Address
Flat 202, 2/F., Block B, Shatin Industrial Centre, 5-7 Yuen Shun Circuit, Shatin, N.T
Regulator reference
SBO-1910

CTM (HK) Limited

Unified Carrier Licence
Also registered as
SBO Class 3 (ISP; ETS)
Address
31/F, Tower Two Times Square, 1 Matheson Street, Causeway Bay, Hong Kong
Regulator reference
UCL-036; SBO-0770

Cyber Channel International Limited

SBO Class 3 (ISP; ETS)
Address
Room C, 7/F, Sun Hing Steel Furniture Commercial Building, 55 Tong Mi Road. Tai Kok Tsui, Kowloon
Regulator reference
SBO-0305

Cypress Telecom Limited

SBO Class 3 (ISP)
Address
Unit 2701, 27/F, 3 Lockhart Road, Wanchai, Hong Kong
Regulator reference
SBO-1427

Independent reference compiled from OFCA (Office of the Communications Authority) - Carrier Licences Enquiry (Unified/Mobile Carrier Licensees) and Services-Based Operator (SBO) Licences Enquiry, with registered addresses taken from the licence documents; service flags from DATA.GOV.HK 'List of SBO Licensees'; hotlines/websites from OFCA's consumer 'Telecommunications Services Providers' page for study and investigative use. Ministry of Cyber Affairs is not a government body and does not represent any listed provider. See the Hong Kong directory overview and the directory hub for other countries.