custmx.netvision.net.il has no CNAME records.
Question and response
Question
dig custmx.netvision.net.il. NS
Answer
The response has no answer records.
Authority
netvision.net.il. 600 SOA dns.netvision.net.il. hostmaster.netvision.net.il. 2026022401 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0