mailenable.topsaas.net has no CNAME records.
Question and response
Question
dig mailenable.topsaas.net. NS
Answer
The response has no answer records.
Authority
topsaas.net. 3448 SOA pdns.binat.net.il. dns.qos.net.il. 2026021900 10800 3600 604800 38400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0