mx2.active24.com has no NS records.
NS records for this zone are defined at active24.com.
NS records for this zone are defined at active24.com.
Question and response
Question
dig mx2.active24.com. NS
Answer
The response has no answer records.
Authority
active24.com. 3600 SOA alfa.ns.active24.cz. hostmaster.active24.cz. 2025110406 10800 1800 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0