function is_socialSecurity_Number(str)  
    {  
     regexp = /^(?!000|666)[0-8][0-9]{2}-(?!00)[0-9]{2}-(?!0000)[0-9]{4}$/;  
        
            if (regexp.test(str))  
              {  
                return true;  
              }  
            else  
              {  
                return false;  
              }  
    }  
      
    console.log(is_socialSecurity_Number("019-90-5680"));  
      
    console.log(is_socialSecurity_Number("K8V-3Y1"));