fw-front2-ext.ewerke.cc has no CNAME records.
Question and response
Question
dig fw-front2-ext.ewerke.cc. NS
Answer
The response has no answer records.
Authority
ewerke.cc. 3600 SOA dns1.ewerke.cc. hostmaster.ewerke.cc. 2016071275 900 600 86400 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0