adns.integraonline.com has no CNAME records.
Question and response
Question
dig adns.integraonline.com. NS
Answer
The response has no answer records.
Authority
integraonline.com. 257 SOA nsx.integraonline.com. itops.zayo.com. 2025022001 300 7200 604800 172800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0