blackboard.sejong.ac.kr resolves to 15.165.82.39            
             Server Type                : openresty/1.15.8.3
             The certificate was issued by Amazon                .
             The certificate will expire in 88 days                .
        
     
    
    
        
        
            | Server | 
        
        
        
                    
                | Common name: | 
                *.sejong.ac.kr | 
            
                    
                | SANs: | 
                *.sejong.ac.kr, *.blackboard.com | 
            
                    
                | Valid: | 
                FromAugust 19, 2021 to September 18, 2022 | 
            
                    
                | Signature Algorithm: | 
                sha256WithRSAEncryption | 
            
                    
                | Issuer: | 
                Amazon | 
            
                
    
    
    
        
            
            
                | Chain | 
            
            
            
                            
                    | Common name: | 
                    Amazon | 
                
                            
                    | Organization: | 
                    Amazon | 
                
                            
                    | Location: | 
                     US | 
                
                            
                    | Valid: | 
                    FromOctober 22, 2015 to October 19, 2025 | 
                
                            
                    | Signature Algorithm: | 
                    sha256WithRSAEncryption | 
                
                            
                    | Issuer: | 
                    Amazon Root CA 1 | 
                
                        
        
    
        
            
            
                | Chain | 
            
            
            
                            
                    | Common name: | 
                    Amazon Root CA 1 | 
                
                            
                    | Organization: | 
                    Amazon | 
                
                            
                    | Location: | 
                     US | 
                
                            
                    | Valid: | 
                    FromMay 25, 2015 to December 31, 2037 | 
                
                            
                    | Signature Algorithm: | 
                    sha256WithRSAEncryption | 
                
                            
                    | Issuer: | 
                    Starfield Services Root Certificate Authority - G2 | 
                
                        
        
    
        
            
            
                | Chain | 
            
            
            
                            
                    | Common name: | 
                    Starfield Services Root Certificate Authority - G2 | 
                
                            
                    | Organization: | 
                    Starfield Technologies, Inc. | 
                
                            
                    | Location: | 
                    Scottsdale Arizona US | 
                
                            
                    | Valid: | 
                    FromSeptember 02, 2009 to June 28, 2034 | 
                
                            
                    | Signature Algorithm: | 
                    sha256WithRSAEncryption |