@ IN SOA eidberg.ch. root.eidberg.ch. ( 27 ; Serial Number 10800 ; refresh (the following lines are seconds) 3600 ; retry 604800 ; expiry 86400 ) ; minimum TTL ; ; Name server ; NS gotzenwil.eidberg.ch. NS winterthur2.eunet.ch. ; ; Mailserver ; MX 10 gotzenwil.eidberg.ch. 1 PTR localhost.