Make it so the filter does not iterate over already filtered IPs.

Models/Handler/DbHandler.cs

@@ -48,7 +48,7 @@ public class DbHandler
                                             " VALUES (@threadNumber, @startRange, @endRange, @firstByte, @secondByte, @thirdByte, @fourthByte);";
     
     private const string ReadUnfilteredStatement = "SELECT * FROM Unfiltered WHERE Id = @id;";
-    private const string ReadUnfilteredIdsStatement = "SELECT Id FROM Unfiltered WHERE Id != 0 ORDER BY Id DESC LIMIT 1;";
+    private const string ReadUnfilteredIdsStatement = "SELECT Id FROM Unfiltered WHERE Filtered == 0;";
     private const string ReadFilteredStatement = "SELECT Title2, Url2 FROM Filtered WHERE (Url2 NOT NULL AND Url2 != '') AND (Title2 NOT NULL AND Title2 != '') ORDER BY Url2 DESC;";
     private const string ReadFilteredIdsStatement = "SELECT Id FROM Filtered WHERE Id != 0 ORDER BY Id DESC LIMIT 1;";
     private const string ReadFilteredIpStatement = "SELECT Ip1, Ip2, Ip3, Ip4 FROM Filtered WHERE Ip1 == @ip1 AND Ip2 == @ip1 AND Ip3 == @ip1 AND Ip4 == @ip1 ORDER BY Ip1 DESC LIMIT 1;";
@@ -372,10 +372,8 @@ public class DbHandler
         return unfiltered;
     }
     
-    public long GetUnfilteredIndexes()
+    public List<long> GetUnfilteredIndexes()
     {
-        long rowId = 0;
-        
         using SqliteConnection connection = new(_unfilteredConnectionString);
         connection.Open();
         
@@ -384,15 +382,17 @@ public class DbHandler
         
         if (!reader.HasRows)
         {
-            return 0;
+            return [];
         }
+
+        List<long> ids = [];
         
         while (reader.Read())
         {
-            rowId = reader.GetInt64(0);
+            ids.Add(reader.GetInt64(0));
         }
         
-        return rowId;
+        return ids;
     }
     
     public long GetFilteredIndexes()