mx.pulsation.fr has no NS records.
NS records for this zone are defined at pulsation.fr.
NS records for this zone are defined at pulsation.fr.
Question and response
Question
dig mx.pulsation.fr. NS
Answer
The response has no answer records.
Authority
pulsation.fr. 3600 SOA ns1.celhost.eu. hostmaster.pulsation.fr. 1771862713 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0