Apex domains cannot have CNAME records.
Question and response
Question
dig dpsrv.me. NS
Answer
dpsrv.me. 5 NS ns2.maxf.net.
dpsrv.me. 5 NS ns1.maxf.net.
dpsrv.me. 5 NS ns3.maxf.net.
Authority
The response has no authority records.
Additional
ns1.maxf.net. 5 A 96.239.100.73
ns2.maxf.net. 5 A 96.57.226.10
ns3.maxf.net. 5 A 5.161.20.183
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0