ns4.nsgrid.net has no NS records.
NS records for this zone are defined at nsgrid.net.
NS records for this zone are defined at nsgrid.net.
Question and response
Question
dig ns4.nsgrid.net. NS
Answer
The response has no answer records.
Authority
nsgrid.net. 1800 SOA ns1.nsgrid.net. dns.nsgrid.net. 2022185335 3600 600 43200 3600
Additional
. 0 OPT ; payload 1224, xrcode 0, version 0, flags 0