pha.inecnet.cz has no CNAME records.
Question and response
Question
dig pha.inecnet.cz. NS
Answer
The response has no answer records.
Authority
inecnet.cz. 10800 SOA ns.inecnet.cz. hostmaster.cz.net. 2009102029 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0