Apex domains cannot have CNAME records.
Question and response
Question
dig qos.net.il. NS
Answer
qos.net.il. 5 NS pdns.qos.net.il.
qos.net.il. 5 NS sdns.qos.net.il.
qos.net.il. 5 NS tdns.qos.net.il.
Authority
The response has no authority records.
Additional
pdns.qos.net.il. 5 A 80.74.96.3
sdns.qos.net.il. 5 A 80.74.96.4
tdns.qos.net.il. 5 A 91.143.233.139
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0