mx03.fischl-online.de has no NS records.
NS records for this zone are defined at fischl-online.de.
NS records for this zone are defined at fischl-online.de.
Question and response
Question
dig mx03.fischl-online.de. NS
Answer
The response has no answer records.
Authority
fischl-online.de. 60 SOA ns03.fischl.online. root.fischl-online.de. 1772505713 28800 7200 2419200 60
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0