Realtime Blackhole List (RBL)
                        
                            GPTKB entity
                        
                    
                Statements (22)
| Predicate | Object | 
|---|---|
| gptkbp:instanceOf | 
                                    
                                        
                                            gptkb:DNS-based_Blackhole_List
                                        
                                         | 
                            
| gptkbp:alsoKnownAs | 
                                    
                                        
                                            gptkb:RBL
                                        
                                         gptkb:MAPS_RBL  | 
                            
| gptkbp:category | 
                                    
                                        
                                            gptkb:anti-spam_technology
                                        
                                         email security  | 
                            
| gptkbp:developedBy | 
                                    
                                        
                                            gptkb:Paul_Vixie
                                        
                                         | 
                            
| gptkbp:influenced | 
                                    
                                        
                                            gptkb:SORBS
                                        
                                         gptkb:SpamCop gptkb:Spamhaus_SBL  | 
                            
| gptkbp:introducedIn | 
                                    
                                        
                                            
                                            1997
                                        
                                        
                                         | 
                            
| gptkbp:listedOn | 
                                    
                                        
                                            
                                            IP addresses
                                        
                                        
                                         | 
                            
| gptkbp:location | 
                                    
                                        
                                            gptkb:United_States
                                        
                                         | 
                            
| gptkbp:operatedBy | 
                                    
                                        
                                            gptkb:Mail_Abuse_Prevention_System_(MAPS)
                                        
                                         | 
                            
| gptkbp:operates | 
                                    
                                        
                                            
                                            DNS queries
                                        
                                        
                                         | 
                            
| gptkbp:purpose | 
                                    
                                        
                                            
                                            block email from known spam sources
                                        
                                        
                                         | 
                            
| gptkbp:replacedBy | 
                                    
                                        
                                            
                                            modern DNSBLs
                                        
                                        
                                         | 
                            
| gptkbp:status | 
                                    
                                        
                                            
                                            defunct
                                        
                                        
                                         | 
                            
| gptkbp:usedFor | 
                                    
                                        
                                            
                                            email filtering
                                        
                                        
                                         spam prevention  | 
                            
| gptkbp:bfsParent | 
                                    
                                        
                                            gptkb:MAPS_(Mail_Abuse_Prevention_System)
                                        
                                         | 
                            
| gptkbp:bfsLayer | 
                                    
                                        
                                            
                                            7
                                        
                                        
                                         | 
                            
| https://www.w3.org/2000/01/rdf-schema#label | 
                                    
                                        
                                            
                                            Realtime Blackhole List (RBL)
                                        
                                        
                                         |