ns3.sqr.cloud has no CNAME records.
Question and response
Question
dig ns3.sqr.cloud. NS
Answer
The response has no answer records.
Authority
sqr.cloud. 300 SOA ns1.cyso.nl. dnsadmin.cysonet.com. 1772064000 16384 2048 1048576 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0