server15.hostwhitelabel.com has no CNAME records.
Question and response
Question
dig server15.hostwhitelabel.com. NS
Answer
The response has no answer records.
Authority
hostwhitelabel.com. 269 SOA ns1.hostwhitelabel.com. admin.crocweb.com. 2026021001 3600 1800 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0