n01.mx.liquidweb.com has no CNAME records.
Question and response
Question
dig n01.mx.liquidweb.com. NS
Answer
The response has no answer records.
Authority
liquidweb.com. 2968 SOA ns.liquidweb.com. root.liquidweb.com. 2026022302 3600 600 172800 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0