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

Non-authoritative answer:
steamuserimages-a.akamaihd.net	canonical name = steamuserimages-a.akamaihd.net.edgesuite.net.
steamuserimages-a.akamaihd.net.edgesuite.net	canonical name = a1639.dscb.akamai.net.
Name:	a1639.dscb.akamai.net
Address: 23.199.54.110
Name:	a1639.dscb.akamai.net
Address: 23.199.54.117
Name:	a1639.dscb.akamai.net
Address: 2600:1405:d400:d::17c7:368f
Name:	a1639.dscb.akamai.net
Address: 2600:1405:d400:d::17c7:3694