linux.ke.euroweb.sk has no CNAME records.
Question and response
Question
dig linux.ke.euroweb.sk. NS
Answer
The response has no answer records.
Authority
ke.euroweb.sk. 10800 SOA auth1.ns.swan.sk. hostmaster.swan.sk. 2010072803 28800 7200 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0