webserver01.ext.compax.at has no CNAME records.
Question and response
Question
dig webserver01.ext.compax.at. NS
Answer
The response has no answer records.
Authority
ext.compax.at. 10272 SOA ns1.compax.at. hostmaster.compax.at. 2025110600 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0