mx.videotron.ca has no NS records.
NS records for this zone are defined at videotron.ca.
NS records for this zone are defined at videotron.ca.
Question and response
Question
dig mx.videotron.ca. NS
Answer
The response has no answer records.
Authority
videotron.ca. 86400 SOA vl-mo-dn010-fae1.mo.videotron.ca. dnsmaster.videotron.ca. 2026021002 3600 900 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0