upcbroadband.cz.	30 IN SOA ns1.upc.biz. newman.mbox.dkm.cz. (
				2023040602 ; serial
				28800      ; refresh (8 hours)
				7200       ; retry (2 hours)
				3600000    ; expire (5 weeks 6 days 16 hours)
				86400      ; minimum (1 day)
				)

Name servers:
upcbroadband.cz.	30 IN NS ns2.upc.biz.
upcbroadband.cz.	30 IN NS ns3.upc.biz.
upcbroadband.cz.	30 IN NS ns1.upc.biz.