shell:$ nslookup -timeout=2 -retry=1 'fb-s-a-a.akamaihd.net'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
fb-s-a-a.akamaihd.net	canonical name = a2047.dscg.akamai.net.
Name:	a2047.dscg.akamai.net
Address: 23.199.54.10
Name:	a2047.dscg.akamai.net
Address: 23.199.54.27
Name:	a2047.dscg.akamai.net
Address: 23.199.54.17
Name:	a2047.dscg.akamai.net
Address: 23.199.54.9
Name:	a2047.dscg.akamai.net
Address: 23.199.54.15
Name:	a2047.dscg.akamai.net
Address: 23.199.54.11
Name:	a2047.dscg.akamai.net
Address: 23.199.54.18
Name:	a2047.dscg.akamai.net
Address: 23.199.54.5
Name:	a2047.dscg.akamai.net
Address: 23.199.54.20
Name:	a2047.dscg.akamai.net
Address: 2600:1407:e800:44::215:90d
Name:	a2047.dscg.akamai.net
Address: 2600:1407:e800:44::215:913
Name:	a2047.dscg.akamai.net
Address: 2600:1407:e800:44::215:916
Name:	a2047.dscg.akamai.net
Address: 2600:1407:e800:44::215:909
Name:	a2047.dscg.akamai.net
Address: 2600:1407:e800:44::215:910