vvbox.cz.		3600 IN	SOA jay.ns.cloudflare.com. dns.cloudflare.com. (
				2034849535 ; serial
				10000      ; refresh (2 hours 46 minutes 40 seconds)
				2400       ; retry (40 minutes)
				604800     ; expire (1 week)
				3600       ; minimum (1 hour)
				)

Name servers:
vvbox.cz.		21600 IN NS jay.ns.cloudflare.com.
vvbox.cz.		21600 IN NS lisa.ns.cloudflare.com.