; The $TTL directive at the top of the zone file (before the SOA) 
; gives a default TTL for every RR without a specific TTL set.
$TTL 86400

switzernet.com. IN    SOA   ns.switzernet.com. hostmaster (
   2008071800     ; Serial
   1D             ; Refresh
   30M            ; Retry
   1W             ; Expiry
   3H             ; Minimum
)

           IN    NS      ns.switzernet.com.

           IN    MX  10  mail.switzernet.com.

           IN    A       62.2.195.66
sip        IN    A       91.121.66.202 
mail       IN    A       62.2.195.66