webdav-ha.syncedtool.com has no CNAME records.
Question and response
Question
dig webdav-ha.syncedtool.com. NS
Answer
The response has no answer records.
Authority
syncedtool.com. 5060 SOA ns1.efscloud.net. root.efscloud.net. 56 86400 7200 3600000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0