$TTL        1800
@       IN      SOA     nsd.klape.eu. domeny.klape.eu. (
                        2019041501       ; serial, todays date + todays serial #
                        1800              ; refresh, seconds
                        1800              ; retry, seconds
                        1800              ; expire, seconds
                        1800 )            ; minimum, seconds
;

mail 1800 A        109.105.49.240
smart-grid.cz. 1800 A        109.105.49.240
www 1800 A        109.105.49.240
smart-grid.cz. 1800      MX    10   mail.smart-grid.cz.
smart-grid.cz. 1800      NS        nsd.klape.eu.
smart-grid.cz. 1800      NS        nsd2.klape.eu.