Telephone and broadband internet connection service provider, with web and mail hosting and internet roaming. [Korean, English]

Corporate profile and information about employment and services. [Korean, English, Chinese]

Directory publishing firm, also a subsidiary of Korea Telecom. [Korean, English]

Provides mobile communications services. [Korean, English, Chinese]

Provides telecommunications network service and consulting for corporations, broadband internet connection services and discounted phone service. Branch offices nationwide. [Korean, English]

PCS service provider. Available services, investment information, and guide for foreigners. [Korean, English]

Mobile phone service provider, also conducts research and development. [Korean, English, Chinese]