nat-l2gpns3.dsi.cnrs.fr has no NS records.
NS records for this zone are defined at dsi.cnrs.fr.
NS records for this zone are defined at dsi.cnrs.fr.
Question and response
Question
dig nat-l2gpns3.dsi.cnrs.fr. NS
Answer
The response has no answer records.
Authority
dsi.cnrs.fr. 300 SOA ns0.cnrs.fr. dnsmaster.dsi.cnrs.fr. 2019034846 21600 3600 3600000 300
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0