shell:$ nslookup -timeout=2 -retry=1 'ct.sendgrid.net'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
Name:	ct.sendgrid.net
Address: 3.20.193.86
Name:	ct.sendgrid.net
Address: 18.116.152.91
Name:	ct.sendgrid.net
Address: 44.199.17.152
Name:	ct.sendgrid.net
Address: 3.148.148.237
Name:	ct.sendgrid.net
Address: 3.225.139.230
Name:	ct.sendgrid.net
Address: 100.29.61.130