ns2.netforms.cz has no CNAME records.
Question and response
Question
dig ns2.netforms.cz. NS
Answer
The response has no answer records.
Authority
netforms.cz. 3374 SOA hostbase.netforms.cz. admin.netforms.cz. 2026030602 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0