ns1.gblx.net.ar has no NS records.
NS records for this zone are defined at gblx.net.ar.
NS records for this zone are defined at gblx.net.ar.
Question and response
Question
dig ns1.gblx.net.ar. NS
Answer
The response has no answer records.
Authority
gblx.net.ar. 21600 SOA ns1.gblx.net.ar. hostmaster.impsat.net.ar. 2230202012 10800 3600 604800 21600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0