Apex domains cannot have CNAME records.
Question and response
Question
dig 1host.co.il. NS
Answer
1host.co.il. 4 NS ns3.1host.co.il.
1host.co.il. 4 NS ns2.1host.co.il.
1host.co.il. 4 NS ns1.1host.co.il.
Authority
The response has no authority records.
Additional
ns1.1host.co.il. 4 A 192.115.76.3
ns2.1host.co.il. 4 A 213.8.196.24
ns3.1host.co.il. 4 A 192.114.71.150
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0