mw01.easyserver.at has no CNAME records.
Question and response
Question
dig mw01.easyserver.at. NS
Answer
The response has no answer records.
Authority
easyserver.at. 10307 SOA ns1.easyserver.at. domainadmin.easyserver.at. 2026021108 10800 3600 2419200 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0