ibmail.binat.net.il has no CNAME records.
Question and response
Question
dig ibmail.binat.net.il. NS
Answer
The response has no answer records.
Authority
binat.net.il. 263 SOA pdns.qos.net.il. dns.qos.net.il. 1414700508 10800 3600 604800 38400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0