powerdns.execulink.net has no CNAME records.
Question and response
Question
dig powerdns.execulink.net. NS
Answer
The response has no answer records.
Authority
execulink.net. 6959 SOA mallet.execulink.net. sysadmin.execulink.com. 2026022001 192873 300 604800 21600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0