ns4.ezhostingserver.com has no CNAME records.
Question and response
Question
dig ns4.ezhostingserver.com. NS
Answer
The response has no answer records.
Authority
ezhostingserver.com. 10800 SOA ns3.ezhostingserver.com. admin.ezhostingserver.com. 2026030203 86400 7200 3600000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0