diff --git a/core/scanner.py b/core/scanner.py
index f6e7a84..f033629 100644
--- a/core/scanner.py
+++ b/core/scanner.py
@@ -550,7 +550,22 @@ class Scanner:
 
             self._collect_node_attributes(source, provider_name, rel_type, rel_target, raw_data, node_attributes[source])
 
-            if _is_valid_ip(rel_target):
+            if isinstance(rel_target, list):
+                # If the target is a list, iterate and process each item
+                for single_target in rel_target:
+                    if _is_valid_ip(single_target):
+                        self.graph.add_node(single_target, NodeType.IP)
+                        if self.graph.add_edge(source, single_target, rel_type, confidence, provider_name, raw_data):
+                            print(f"Added IP relationship: {source} -> {single_target} ({rel_type})")
+                        discovered_targets.add(single_target)
+                    elif _is_valid_domain(single_target):
+                        self.graph.add_node(single_target, NodeType.DOMAIN)
+                        if self.graph.add_edge(source, single_target, rel_type, confidence, provider_name, raw_data):
+                            print(f"Added domain relationship: {source} -> {single_target} ({rel_type})")
+                        discovered_targets.add(single_target)
+                        self._collect_node_attributes(single_target, provider_name, rel_type, source, raw_data, node_attributes[single_target])
+
+            elif _is_valid_ip(rel_target):
                 self.graph.add_node(rel_target, NodeType.IP)
                 if self.graph.add_edge(source, rel_target, rel_type, confidence, provider_name, raw_data):
                     print(f"Added IP relationship: {source} -> {rel_target} ({rel_type})")
@@ -573,6 +588,7 @@ class Scanner:
 
         return discovered_targets, False
 
+
     def _create_large_entity(self, source: str, provider_name: str, results: List, current_depth: int) -> Set[str]:
         """Create a large entity node and returns the members for DNS processing."""
         entity_id = f"large_entity_{provider_name}_{hash(source) & 0x7FFFFFFF}"
diff --git a/dump.rdb b/dump.rdb
index 2fd4d59..b85d9b8 100644
Binary files a/dump.rdb and b/dump.rdb differ
diff --git a/providers/crtsh_provider.py b/providers/crtsh_provider.py
index 58425f0..e24edce 100644
--- a/providers/crtsh_provider.py
+++ b/providers/crtsh_provider.py
@@ -213,17 +213,11 @@ class CrtShProvider(BaseProvider):
                 cert_domains = self._extract_domains_from_certificate(cert_data)
                 
                 # Add all domains from this certificate to our tracking
+                all_discovered_domains.update(cert_domains)
                 for cert_domain in cert_domains:
-                    # Additional stop check during domain processing
-                    if i % 20 == 0 and self._stop_event and self._stop_event.is_set():
-                        print(f"CrtSh domain processing cancelled for domain: {domain}")
-                        break
-                        
                     if not _is_valid_domain(cert_domain):
                         continue
                     
-                    all_discovered_domains.add(cert_domain)
-                    
                     # Initialize domain certificate list if needed
                     if cert_domain not in domain_certificates:
                         domain_certificates[cert_domain] = []
diff --git a/providers/dns_provider.py b/providers/dns_provider.py
index 93240a5..d73ef6c 100644
--- a/providers/dns_provider.py
+++ b/providers/dns_provider.py
@@ -121,6 +121,9 @@ class DNSProvider(BaseProvider):
                         discovery_method="reverse_dns_lookup"
                     )
 
+        except resolver.NXDOMAIN:
+            self.failed_requests += 1
+            self.logger.logger.debug(f"Reverse DNS lookup failed for {ip}: NXDOMAIN")
         except Exception as e:
             self.failed_requests += 1
             self.logger.logger.debug(f"Reverse DNS lookup failed for {ip}: {e}")