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

Non-authoritative answer:
support.opensignal.com	canonical name = tutela.zendesk.com.
Name:	tutela.zendesk.com
Address: 216.198.54.6
Name:	tutela.zendesk.com
Address: 216.198.53.6