ns2.lap.pl has no CNAME records.
Question and response
Question
dig ns2.lap.pl. NS
Answer
The response has no answer records.
Authority
lap.pl. 2751 SOA ns1.lap.pl. hosting.agnat.pl. 2010095739 7200 1800 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0