Whois and DAS (Domain Availability Service)

Whois

The Whois service provides a way for the public to lookup information about registered data.

To protect the data from possible abuse, the Whois service enforces a rate limitation mechanism, which will limit the possibility for a client to do a large number of requests within a short period of time.

Registrar Whois

The Registrar Whois is a closed access service reserved for Norid’s registrars. The service gives the registrar full access to the necessary customer data, also after the public whois gets scaled down to satisfy new privacy rules.

DAS (Domain Availabilty Service)

The DAS provides a way for the public to check whether a domain can be registered. There may be three answers to an input query:

  • If a domain can be registered, the answer is that the domain is available.
  • If a domain is already registered, the answer is that the domain is already delegated, which means that it is already registered.
  • If the domain cannot be registered of some particular reason, the answer is that the domain can not be registered.

The DAS service enforces a lower rate limitation than the Whois.

Last updated 27 February 2018