shell:$ nslookup -timeout=2 -retry=1 'gateway.icloud.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
gateway.icloud.com	canonical name = gateway.fe2.apple-dns.net.
Name:	gateway.fe2.apple-dns.net
Address: 17.248.230.8
Name:	gateway.fe2.apple-dns.net
Address: 17.248.230.64
Name:	gateway.fe2.apple-dns.net
Address: 2620:149:1363::4
Name:	gateway.fe2.apple-dns.net
Address: 2620:149:a42:980::2:5
Name:	gateway.fe2.apple-dns.net
Address: 2620:149:a42:980::9
Name:	gateway.fe2.apple-dns.net
Address: 2620:149:a42:980::11
Name:	gateway.fe2.apple-dns.net
Address: 2620:149:1363::b
Name:	gateway.fe2.apple-dns.net
Address: 2620:149:a42:980::2:6