The original design of the DNS (Domain Name System) contained no security. The emphasis was on creating a scalable and distributed system. DNSSEC (Domain Name System Security Extensions) tries to add security while maintaining compatibility with the existing standard.
Institutions on forskningsnettet, the Danish national research and education network, may choose to use DeiC name services.
DeiC operates an authoritative name server and a secondary name server. It is also possible to use the forskningsnet name servers as secondary to a local name server - with or without DNSSEC.
DeiC also operates a number of DNS caches that users may query directly. They can also be used as backup for a local name server. Caches are situated at: