Apex domains cannot have CNAME records.
Question and response
Question
dig NetVision.Net.il. NS
Answer
netvision.net.il. 2 NS dns.netvision.net.il.
netvision.net.il. 2 NS nypop.netvision.net.il.
Authority
The response has no authority records.
Additional
dns.netvision.net.il. 2 A 194.90.1.5
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0