$ORIGIN minsk.stockholm.prac.os3.nl.    ; default zone domain
$TTL 60   ; default time to live

@ IN SOA minsk.studlab.os3.nl. netmaster.minsk.prac.os3.nl. (
           2019100400  ; serial number
           7200       ; Refresh
           1500        ; Retry
           1209600      ; Expire
           60       ; Min TTL
           )

           NS      minsk.studlab.os3.nl.
           NS      stockholm.studlab.os3.nl.
           MX      10 mail.minsk.prac.os3.nl.
           MX      20 minsk.studlab.os3.nl.
           MX      30 stockholm.studlab.os3.nl

localhost  IN     A    127.0.0.1
ns1        IN     A    145.100.96.11
mail       IN     A    145.100.96.11
ns2        IN     A    127.0.0.1
klaas      CNAME       boktor.blaauwgeers.net.
tulp       CNAME       tulp.blaauwgeers.net.
*          IN     A    127.0.0.1
stockholm  IN     NS   stockholm.studlab.os3.nl.