srv3dcc2cprd.oi.com.br has no NS records.
NS records for this zone are defined at oi.com.br.
NS records for this zone are defined at oi.com.br.
Question and response
Question
dig dial.directcall.com.br. NS
Answer
The response has no answer records.
Authority
directcall.com.br. 1800 SOA malcolm.ns.cloudflare.com. dns.cloudflare.com. 2397932723 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0