ns11.conectasul.com has no CNAME records.
Question and response
Question
dig ns11.conectasul.com. NS
Answer
The response has no answer records.
Authority
conectasul.com. 135 SOA john.ns.cloudflare.com. dns.cloudflare.com. 2397301488 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0