ns1.decknet.com has no CNAME records.
Question and response
Question
dig ns1.decknet.com. NS
Answer
The response has no answer records.
Authority
decknet.com. 1589 SOA ns1.decknet.com. postmaster.decknet.com. 2025012701 10800 3600 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0