soubce.cz.		30 IN SOA names.dialtelecom.cz. hostmaster.dialtelecom.cz. (
				2024050501 ; serial
				21600      ; refresh (6 hours)
				900        ; retry (15 minutes)
				1209600    ; expire (2 weeks)
				3600       ; minimum (1 hour)
				)

Name servers:
soubce.cz.		30 IN NS sns.dialtelecom.cz.
soubce.cz.		30 IN NS names.dialtelecom.cz.