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

Non-authoritative answer:
Name:	www.khanacademy.com
Address: 3.171.22.43
Name:	www.khanacademy.com
Address: 3.171.22.86
Name:	www.khanacademy.com
Address: 3.171.22.48
Name:	www.khanacademy.com
Address: 3.171.22.88