shell:$ nslookup -timeout=2 -retry=1 'au.ff.avast.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
au.ff.avast.com	canonical name = vps-v4-4.u.avcdn.net.edgesuite.net.
vps-v4-4.u.avcdn.net.edgesuite.net	canonical name = a1983.dscd.akamai.net.
Name:	a1983.dscd.akamai.net
Address: 23.199.54.42
Name:	a1983.dscd.akamai.net
Address: 23.199.54.56
Name:	a1983.dscd.akamai.net
Address: 2600:1405:d400:b::17c7:36aa
Name:	a1983.dscd.akamai.net
Address: 2600:1405:d400:b::17c7:36a6