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: 52.34.95.160
Name:	greenhouse.io
Address: 50.112.216.216
Name:	greenhouse.io
Address: 44.238.253.222