s1.nickhost.com has no CNAME records.
Question and response
Question
dig s1.nickhost.com. NS
Answer
The response has no answer records.
Authority
nickhost.com. 6844 SOA ns1.91-203-4-59.cprapid.com. tech.nickhost.com. 2026030306 3600 1800 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0