msg.o2switch.fr has no NS records.
NS records for this zone are defined at o2switch.fr.
NS records for this zone are defined at o2switch.fr.
Question and response
Question
dig msg.o2switch.fr. NS
Answer
The response has no answer records.
Authority
o2switch.fr. 86400 SOA dark.o2sdns.fr. support.o2switch.fr. 2010032908 86400 7200 1728000 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0