mxmta.bellnet.ca has no NS records.
NS records for this zone are defined at bellnet.ca.
NS records for this zone are defined at bellnet.ca.
Question and response
Question
dig mxmta.bellnet.ca. NS
Answer
The response has no answer records.
Authority
bellnet.ca. 900 SOA mtl02vnszs08.srvr.bell.ca. dns-admin.bellglobal.com. 7994 10800 3600 2419200 900
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0