diff --git a/core/models/BaseConnection.py b/core/models/BaseConnection.py
index b99e4e2..c394b52 100644
--- a/core/models/BaseConnection.py
+++ b/core/models/BaseConnection.py
@@ -9,3 +9,9 @@ class BaseConnection:
 
     def needs_wireguard_configuration(self):
         return self.code == 'wireguard'
+
+    def is_session_connection(self):
+        return type(self).__name__ == 'SessionConnection'
+
+    def is_system_connection(self):
+        return type(self).__name__ == 'SystemConnection'
diff --git a/core/models/Location.py b/core/models/Location.py
index 7627e2a..f80a855 100644
--- a/core/models/Location.py
+++ b/core/models/Location.py
@@ -37,6 +37,9 @@ class Location(Model):
 
         self.available = self.exists(self.code)
 
+    def is_available(self):
+        return self.exists(self.code)
+
     @staticmethod
     def find_by_id(id: int):
         Model._create_table_if_not_exists(table_name=_table_name, table_definition=_table_definition)
diff --git a/core/models/Subscription.py b/core/models/Subscription.py
index 983b84a..a7247f2 100644
--- a/core/models/Subscription.py
+++ b/core/models/Subscription.py
@@ -1,6 +1,6 @@
 from dataclasses import dataclass, field
 from dataclasses_json import config, dataclass_json
-from datetime import datetime
+from datetime import datetime, timezone
 from marshmallow import fields
 from typing import Optional
 import dataclasses_json
@@ -21,11 +21,14 @@ class Subscription:
         )
     )
 
-    @staticmethod
-    def _iso_format(datetime_instance: datetime):
-        return datetime.isoformat(datetime_instance).replace('+00:00', 'Z')
+    def is_active(self):
+        return self.expires_at is not None and self.expires_at > datetime.now(tz=timezone.utc)
 
     @staticmethod
     def from_iso_format(datetime_string: str):
         date_string = datetime_string.replace('Z', '+00:00')
         return datetime.fromisoformat(date_string)
+
+    @staticmethod
+    def _iso_format(datetime_instance: datetime):
+        return datetime.isoformat(datetime_instance).replace('+00:00', 'Z')