isy-php7-02.stampinet.net has no CNAME records.
Question and response
Question
dig isy-php7-02.stampinet.net. NS
Answer
The response has no answer records.
Authority
stampinet.net. 3371 SOA ns.forpsi.net. admin.forpsi.com. 2026030201 14400 3600 2592000 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0