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

Non-authoritative answer:
support.sendgrid.com	canonical name = twiliosendgrid.zendesk.com.
Name:	twiliosendgrid.zendesk.com
Address: 216.198.53.11
Name:	twiliosendgrid.zendesk.com
Address: 216.198.54.11