shell:$ nslookup -timeout=2 -retry=1 'stage.sendgrid.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
stage.sendgrid.com	canonical name = d329vrjbd7qc7j.cloudfront.net.
Name:	d329vrjbd7qc7j.cloudfront.net
Address: 3.167.163.16
Name:	d329vrjbd7qc7j.cloudfront.net
Address: 3.167.163.75
Name:	d329vrjbd7qc7j.cloudfront.net
Address: 3.167.163.12
Name:	d329vrjbd7qc7j.cloudfront.net
Address: 3.167.163.11