  .    1-2147483647. 
  ,     .     -
   (, ,    ).  ,
    SOA     ,
  .

 .  ,      
     ;     -
.

 .     .

  .  ,      ,
     .      -
   .

 .   ,     

    (TTL   ).
    SOA :

@ IN SOA ns.zach.net. mgs@sobell.com. ( 2003111247 8 2 4W ID )

@      IN      SOA    ns.zach.net. mgs@sobell corn. (

2003111247        serial   ( )
8                refresh  ()
2                retry    ( )
4W                expire   ( )
ID )              minimum  ()

          -
.  @     SOA   (  
zach.net,        named, conf (.
 "named, conf"    ),    , -
   SOA).      
zach.net. IN SOA     ns.zach.net. mgs@sobell.com. (

 host  ,       
   :

$ host -t soa zach.net

zach.net. SOA ns.zach.net. mgs\@sobell.com. 03111 28800 7200 2419200 86400

TXT. Text ().     .  Name  
.  Data    256 ,   . -
 TXT     .   
,   , ,   
.

   DNS

.  DNS    :

1. .  , FQDN  IP-    .

2. .    (.  ).

3. .  1  IN   Internet.

 24. DNS/BIND:                           727