Question and response
Question
dig email.oi.com.br. NS
Answer
email.oi.com.br. 5 CNAME u6262028.wl029.sendgrid.net.
Authority
wl029.sendgrid.net. 1800 SOA aisha.ns.cloudflare.com. dns.cloudflare.com. 2398695317 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0