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: 23.199.54.13
Name:	a2047.dscg.akamai.net
Address: 23.199.54.8
Name:	a2047.dscg.akamai.net
Address: 23.199.54.11
Name:	a2047.dscg.akamai.net
Address: 23.199.54.7
Name:	a2047.dscg.akamai.net
Address: 23.199.54.14
Name:	a2047.dscg.akamai.net
Address: 23.199.54.12
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: 23.199.54.10
Name:	a2047.dscg.akamai.net
Address: 2600:1405:d400:11::17c7:360d
Name:	a2047.dscg.akamai.net
Address: 2600:1405:d400:11::17c7:360c
Name:	a2047.dscg.akamai.net
Address: 2600:1405:d400:11::17c7:3608
Name:	a2047.dscg.akamai.net
Address: 2600:1405:d400:11::17c7:3617
Name:	a2047.dscg.akamai.net
Address: 2600:1405:d400:11::17c7:3616