.  DNS-         
DNS-.  DNS-  ,    -
    .         -
   .

 DNS  ,    DNS   ,
  ,       DNS.

.  DNS,     ,   :

  .    

  .  

  .  ,   

  .    ,   


  .      NS
       .
$ dig fedora.redhat.com

;; QUESTION SECTION:     ( )
;fedora.redhat.com.                 IN         A

;; ANSWER SECTION:       ( )

fedora.redhat.com.       600        IN         CNAME   www.redhat.com.

www.redhat.com.          330        IN         A       209.132.177.50

;; AUTHORITY SECTION:    ( )
redhat.corn.              409        IN         NS      nsl.redhat.com.
redhat.com.              409        IN         NS      ns2.redhat.com.
redhat.corn.              409        IN         NS      ns3.redhat.com.

;; ADDITIONAL SECTION:   ( )
nsl.redhat.com.          300        IN         A       66.187.233.210
ns2.redhat.com.          600        IN         A       66.187.224.210
ns3.redhat.com.          600        IN         A       66.187.229.10

  

       , DNS  -
   ,    ,
      IP-.    
   DNS     , DNS
      IP-    .

DNS        
in-addr.arpa.         Name IP-,  
    IP-.   Data  FQDN,
 IP-.

      ,  - -
    ,    ,       , 
   .       -
       ,   -

728  V.     