h4F62961D.cli.nitronet.pl has no CNAME records.
Question and response
Question
dig h4F62961D.cli.nitronet.pl. NS
Answer
The response has no answer records.
Authority
cli.nitronet.pl. 3362 SOA dns.nitronet.pl. hostmaster.nitronet.pl. 2013031263 86400 7200 720000 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0