.hk is the Internet country code top-level domain (ccTLD) for Hong Kong. It was created in 1990.
Until 2004 there were very few second-level domains under .hk, as it was normally only possible to register third-level domains. The following are the main third-level domains:
.com.hk - commercial entity
.edu.hk - educational institutions
.gov.hk - government
.idv.hk - individuals
.net.hk - network service providers
.org.hk - non-profit organizations
Since .HK enables you to protect your business online, a domain with .HK makes your web address unique and easy to memorize. A .HK extension is doing much more, helping you reach and communicate with the audience in Hong Kong.