filter.ms.hu has no CNAME records.
Question and response
Question
dig filter.ms.hu. NS
Answer
The response has no answer records.
Authority
ms.hu. 1117 SOA ns.microsystem.hu. support.microsystem.hu. 2024042801 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0