serv.tarman.pl has no CNAME records.
Question and response
Question
dig serv.tarman.pl. NS
Answer
The response has no answer records.
Authority
tarman.pl. 10800 SOA info.tarman.pl. admin.tarman.pl. 2009042045 28800 7200 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0