lrn1.piratel.com has no CNAME records.
Question and response
Question
dig lrn1.piratel.com. NS
Answer
The response has no answer records.
Authority
piratel.com. 1199 SOA martin.ns.cloudflare.com. dns.cloudflare.com. 2397615306 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0