ns1.lstn.net has no NS records.
NS records for this zone are defined at lstn.net.
NS records for this zone are defined at lstn.net.
Question and response
Question
dig ns1.lstn.net. NS
Answer
The response has no answer records.
Authority
lstn.net. 2560 SOA ns1.limestonenetworks.com. noc.limestonenetworks.com. 1773630454 16384 2048 1048576 2560
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0