$ORIGIN sXX-zone.cis.k7dxs.net.
@       300 IN SOA  sXX.cis.k7dxs.net. admin.k7dxs.net. (
            2    ; serial
            300  ; refresh
            300  ; retry
            300  ; expire
            300  ; minimum
)

; Nameservers
@       300     IN      NS      sXX.cis.k7dxs.net.

; Test record
@       300     IN      TXT     "sXX-zone test record: 1"