shell:$ nslookup -timeout=2 -retry=1 'bleskmobil.cz'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
Name:	bleskmobil.cz
Address: 80.79.30.99
Name:	bleskmobil.cz
Address: 2a01:430:101:1000:1::2