mail.topchoice.com.mt has no NS records.
NS records for this zone are defined at topchoice.com.mt.
NS records for this zone are defined at topchoice.com.mt.
Question and response
Question
dig mail.topchoice.com.mt. NS
Answer
The response has no answer records.
Authority
topchoice.com.mt. 1800 SOA aliza.ns.cloudflare.com. dns.cloudflare.com. 2396609969 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0