mail.sielsystems.nl has no NS records.
NS records for this zone are defined at sielsystems.nl.
NS records for this zone are defined at sielsystems.nl.
Question and response
Question
dig mail.sielsystems.nl. NS
Answer
The response has no answer records.
Authority
sielsystems.nl. 3600 SOA ns1.sielsystems.nl. beheer.sielsystems.nl. 2026030908 3600 600 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0