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

Non-authoritative answer:
investor.fb.com	canonical name = webfarm-31.q4web.com.
webfarm-31.q4web.com	canonical name = webfarm-30911.q4web.com.
webfarm-30911.q4web.com	canonical name = webfarm-300.q4web.com.
webfarm-300.q4web.com	canonical name = cloudflare.cdn.web.prd.q4inc.com.
cloudflare.cdn.web.prd.q4inc.com	canonical name = cloudflare.cdn.web.prd.q4inc.com.cdn.cloudflare.net.
Name:	cloudflare.cdn.web.prd.q4inc.com.cdn.cloudflare.net
Address: 162.159.129.11
Name:	cloudflare.cdn.web.prd.q4inc.com.cdn.cloudflare.net
Address: 162.159.130.11
Name:	cloudflare.cdn.web.prd.q4inc.com.cdn.cloudflare.net
Address: 2606:4700:7::a29f:810b
Name:	cloudflare.cdn.web.prd.q4inc.com.cdn.cloudflare.net
Address: 2606:4700:7::a29f:820b