ns1.orange.fr has no NS records.
NS records for this zone are defined at orange.fr.
NS records for this zone are defined at orange.fr.
Question and response
Question
dig ns1.orange.fr. NS
Answer
The response has no answer records.
Authority
orange.fr. 900 SOA ns1.orange.fr. hostmaster.orange.fr. 6033 10800 3600 2419200 900
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0