mailr1.mtgsy.net has no NS records.
NS records for this zone are defined at mtgsy.net.
NS records for this zone are defined at mtgsy.net.
Question and response
Question
dig mailr1.mtgsy.net. NS
Answer
The response has no answer records.
Authority
mtgsy.net. 3600 SOA ns1.g12.cfdns.net. hostmaster.mtgsy.net. 2011073055 14400 3600 1209600 3600
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0