.hk is the country code top-level domain for the Hong Kong Special Administrative Region. Introduced on 3 January 1990, it is administered by the Hong Kong Internet Registration Corporation.
Wikipedia
Introduced:3 January 1990
TLD type:Country code top-level domain
Status:Active
Registry:Hong Kong Internet Registration Corporation Ltd.
Intended use:Entities connected with, British Hong Kong:(1990–1997), Hong Kong SAR:(1997–present)
Actual use:Popular in Hong Kong
Registration restrictions:Second-level registrations open to all Generic '.hk' domain categories, Specific third-level registrations require identity documents depending on varying rules for each sector, DNSSEC is not available on most local registries.