     IP- :    
  ,     IP-.
   CNAME,    DNS    DNS
  ,  CNAME.    -
    CNAME.    -
  ftp   www.sam.net.:

ftp   IN        CNAME    www.sam.net.

MX. Mail Exchange (  ).    ,
 .  Name   ,    .
 Data    ,      .  
  ,  NX    , 
          
 .       ,
     .   -
    , DNS     -
 .     ,   
speedy,  ,  mail,        mail. sam. net.. 
speedy   Name    .

speedy            MX        10 mail

MX        20 mail.sam.net.

NS. NameServer ( ).   ,  
 ( DNS)  .  Name   ;  Data -
  DNS-.        
 NS. DNS-      ,   
  ,       .    
    ns,         
,   .    , 
ns. max. net        peach:

peach          NS     ns.max.net.

PTR. Pointer ().  IP-       -
  .  Name  IP-,   Data   -
.      .    -
  3     (, 0.168.192.in-addr.arpa),
  grape.      "-
  "    .
3      IN      PTR    grape

SOA. Start of Authority ( ).   .    -
      SOA.    
SOA  ,    .

        SOA,   
    .  Name      .
 Data   ,     ,   ,
  ,    ,   . -
        ,    SOA.

726                            V.     