mx.apprendrefrancaisviaskype.com has no NS records.
NS records for this zone are defined at apprendrefrancaisviaskype.com.
NS records for this zone are defined at apprendrefrancaisviaskype.com.
Question and response
Question
dig mx.apprendrefrancaisviaskype.com. NS
Answer
The response has no answer records.
Authority
apprendrefrancaisviaskype.com. 3600 SOA dns.apprendrefrancaisviaskype.com. hostmaster.apprendrefrancaisviaskype.com. 1371988854 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0