Use the Tool NSlookup

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  NSlookup can resolve names locally.computer network image by Sergey Drozdov from Fotolia.com
  
  This tool is installed by default on most operating systems. Open a CMD.exe on Windows or a shell prompt on Linux or Mac OS X. On Windows, from the "Start" menu, choose "All Programs," then "Accessories," then the "Command Prompt." Different Linux systems may have different methods for starting a shell. Using Ubuntu, under the "Applications" menu, choose "Accessories," then "Terminal."
  
  
• 2). Start the NSlookup program. Type "nslookup" at the command prompt. You may see output that shows what name server is currently in use.
  
  
• 3). Type in the IP address that you want to resolve. For example, typing 199.246.24.129 will return "Name:thehostingservice.com." This is the name associated with the IP address.
  
  

Use an Online Service

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  Many web servers will offer name lookup as a service.WWW World..... image by David B??ttner from Fotolia.com
  
  Choose an online service from the list of servers in "Resources."
  
  
• 2). Choose the option to do a reverse lookup or to find a PTR record. For example, on Zone Edit, enter the IP address in the field for "Reverse Lookup." On Kloth, enter the IP address in the field called "Domain" and then choose "PRT (domain pointer)" in the query drop-down menu.
  
  
• 3). Read the domain name from the output. The output of these sites will show the domain name associated with the IP address. A non-authoritative answer means that the answer was received from a caching server, which means that the answer might be a few days old.