Question and response
Question
dig mail.cds-global.com. NS
Answer
mail.cds-global.com. 5 CNAME u21890913.wl164.sendgrid.net.
Authority
wl164.sendgrid.net. 1800 SOA aisha.ns.cloudflare.com. dns.cloudflare.com. 2397559205 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0