nomail.ee-docs.com has no CNAME records.
Question and response
Question
dig nomail.ee-docs.com. NS
Answer
The response has no answer records.
Authority
ee-docs.com. 3324 SOA dns1.amx.com.pe. hostmaster.ee-docs.com. 2017033753 5400 600 90000 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0