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

Non-authoritative answer:
pbs.twimg.com	canonical name = pbs.twimg.com.cdn.cloudflare.net.
Name:	pbs.twimg.com.cdn.cloudflare.net
Address: 172.64.150.129
Name:	pbs.twimg.com.cdn.cloudflare.net
Address: 104.18.37.127