.ck is the Internet country code top-level domain (ccTLD) for the Cook Islands. Registrations are within these second-level categories: * .co.ck: business organizations * .org.ck: not-for-profit organizations * .edu.ck: educational institutions * .gov.ck: government agencies * .net.ck: Internet Service Providers * .gen.ck: * .biz.ck: Business related pages for the Cook Islands * .info.ck: Information pages relating to the Cook Islands