DK-zone. Second level domains In general most companies and people register their desired domain name at the second level, e.g. company.dk and lastname.dk. Third level domains Third level domains are allocated by second level domain owners. The registry does not run, recommend nor endorse any general second level domains, such as .com.dk, for third parties, and they are generally not seen. Oldest .dk domains The oldest .dk domains still registered in DK Hostmaster's database, are the domains dkuug.dk, diku.dk, bk.dk, ibt.dk, ifad.dk, lego.dk, mainz.dk and nordita.dk which were all registered in 1987 when .dk was registered. With the registration of .dk a dual naming with both .uucp and .dk names was introduced. Of these, diku.dk and ibt.dk can be said to be the oldest names, as these were the initial names on the Danish UUCP network started 2 January 1983. External links IANA .dk whois information DK Hostmaster A/S List of .dk approved registrars History of DENet References Council of European National Top Level Domain Registries members Internet in Denmark Country code top-level domains Mass media in Denmark Computer-related introductions in 1987 1987 establishments in Denmark Internet properties established in 1987 sv:Toppdomän#D