zayogroup.wpengine.com has no CNAME records.
Question and response
Question
dig zayogroup.wpengine.com. NS
Answer
The response has no answer records.
Authority
wpengine.com. 1800 SOA jim.ns.cloudflare.com. dns.cloudflare.com. 2397686679 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0