u14390602.wl103.sendgrid.net has no NS records.
NS records for this zone are defined at wl103.sendgrid.net.
NS records for this zone are defined at wl103.sendgrid.net.
Question and response
Question
dig u14390602.wl103.sendgrid.net. NS
Answer
The response has no answer records.
Authority
wl103.sendgrid.net. 1800 SOA aisha.ns.cloudflare.com. dns.cloudflare.com. 2399431265 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0