This is strange. I was able to resolve the IP using the host command. But curl and ping won't work.

    $ host dk
    dk has address 193.163.102.24
    dk has IPv6 address 2a01:630:0:40:b1a:b1a:2011:1
    $ curl dk
    curl: (6) Couldn't resolve host 'dk'
    $ ping dk
    ping: unknown host dk
    $

EDIT: Putting a . behind dk solves the problem.

http://www.dk redirects to http://www.telenor.dk