vador.o2sdns.fr has no NS records.
NS records for this zone are defined at o2sdns.fr.
NS records for this zone are defined at o2sdns.fr.
Question and response
Question
dig vador.o2sdns.fr. NS
Answer
The response has no answer records.
Authority
o2sdns.fr. 3600 SOA nsa.bookmyname.com. 263626bcbfdf120f\.t943555.whois.bookmyname.com. 1773671719 43200 3600 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0