shell:$ nslookup -timeout=2 -retry=1 'sendgrid.net'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
Name:	sendgrid.net
Address: 3.20.87.51
Name:	sendgrid.net
Address: 18.224.219.179
Name:	sendgrid.net
Address: 3.220.122.174
Name:	sendgrid.net
Address: 54.158.174.185
Name:	sendgrid.net
Address: 3.20.194.73
Name:	sendgrid.net
Address: 3.231.179.208