shell:$ nslookup -timeout=2 -retry=1 'greenhouse.io'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	greenhouse.io
Address: 52.25.49.206
Name:	greenhouse.io
Address: 44.230.37.63
Name:	greenhouse.io
Address: 35.165.21.223