Created
          January 2, 2019 07:05 
        
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    IPv4_matching_regex
  
        
  
    
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  | ^(2[0-4][0-9]|25[0-5]|1[0-9][0-9]|[1-9][0-9]|[0-9])\.(2[0-4][0-9]|25[0-5]|1[0-9][0-9]|[1-9][0-9]|[0-9])\.(2[0-4][0-9]|25[0-5]|1[0-9][0-9]|[1-9][0-9]|[0-9])\.(2[0-4][0-9]|25[0-5]|1[0-9][0-9]|[1-9][0-9]|[0-9])$ | 
  
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