isp2.netcon.at has no NS records.
NS records for this zone are defined at netcon.at.
NS records for this zone are defined at netcon.at.
Question and response
Question
dig isp2.netcon.at. NS
Answer
The response has no answer records.
Authority
netcon.at. 86400 SOA isp1.netcon.at. postmaster.netcon.at. 2026020602 28800 7200 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0