diff --git a/EDPlayerJournal/Instances.cs b/EDPlayerJournal/Instances.cs
new file mode 100644
index 0000000..55f88c9
--- /dev/null
+++ b/EDPlayerJournal/Instances.cs
@@ -0,0 +1,52 @@
+namespace EDPlayerJournal;
+
+/// <summary>
+/// Contains information regarding instances you can supercruise into,
+/// such as combat zones, installations and megaship scenarios.
+/// </summary>
+public class Instances {
+    /// <summary>
+    /// Low ship combat zone
+    /// </summary>
+    public static readonly string WarzoneLow = "$Warzone_PointRace_Low";
+    /// <summary>
+    /// Medium ship combat zone
+    /// </summary>
+    public static readonly string WarzoneMedium = "$Warzone_PointRace_Med";
+    /// <summary>
+    /// High ship combat zone.
+    /// </summary>
+    public static readonly string WarzoneHigh = "$Warzone_PointRace_High";
+
+    /// <summary>
+    /// Low Thargoid combat zone
+    /// </summary>
+    public static readonly string WarzoneThargoidLow = "$Warzone_TG_Low";
+    /// <summary>
+    /// Medium Thargoid combat zone
+    /// </summary>
+    public static readonly string WarzoneThargoidMed = "$Warzone_TG_Med";
+    /// <summary>
+    /// High Thargoid combat zone
+    /// </summary>
+    public static readonly string WarzoneThargoidHigh = "$Warzone_TG_High";
+    /// <summary>
+    /// Very High Thargoid combat zone
+    /// </summary>
+    public static readonly string WarzoneThargoidVeryHigh = "$Warzone_TG_VeryHigh";
+
+    public static bool IsInstance(string type, string instance) {
+        if (string.IsNullOrEmpty(type) || string.IsNullOrEmpty(instance)) {
+            return false;
+        }
+
+        // Instance names are split by a semi colon, with the remainder being
+        // additional info to such as index.
+        string[] parts = type.Split(":");
+        if (!parts[0].StartsWith("$")) {
+            return false;
+        }
+
+        return string.Compare(parts[0], instance, true) == 0;
+    }
+}