ns.unchk.sn has no NS records.
NS records for this zone are defined at unchk.sn.
NS records for this zone are defined at unchk.sn.
Question and response
Question
dig ns.unchk.sn. NS
Answer
The response has no answer records.
Authority
unchk.sn. 7200 SOA ns.unchk.sn. nsmanager.unchk.edu.sn. 2026031701 7200 1800 2419200 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0