diff --git a/homeassistant/components/fritz/common.py b/homeassistant/components/fritz/common.py
index fa4096cb4ff..2cd6616f134 100644
--- a/homeassistant/components/fritz/common.py
+++ b/homeassistant/components/fritz/common.py
@@ -574,6 +574,13 @@ class AvmWrapper(FritzBoxTools):
             partial(self.get_wan_dsl_interface_config)
         )
 
+    async def async_get_wan_link_properties(self) -> dict[str, Any]:
+        """Call WANCommonInterfaceConfig service."""
+
+        return await self.hass.async_add_executor_job(
+            partial(self.get_wan_link_properties)
+        )
+
     async def async_get_port_mapping(self, con_type: str, index: int) -> dict[str, Any]:
         """Call GetGenericPortMappingEntry action."""
 
@@ -676,6 +683,13 @@ class AvmWrapper(FritzBoxTools):
 
         return self._service_call_action("WANDSLInterfaceConfig", "1", "GetInfo")
 
+    def get_wan_link_properties(self) -> dict[str, Any]:
+        """Call WANCommonInterfaceConfig service."""
+
+        return self._service_call_action(
+            "WANCommonInterfaceConfig", "1", "GetCommonLinkProperties"
+        )
+
     def set_wlan_configuration(self, index: int, turn_on: bool) -> dict[str, Any]:
         """Call SetEnable action from WLANConfiguration service."""
 
diff --git a/homeassistant/components/fritz/diagnostics.py b/homeassistant/components/fritz/diagnostics.py
index 4305ee4d7cb..f35eca6b914 100644
--- a/homeassistant/components/fritz/diagnostics.py
+++ b/homeassistant/components/fritz/diagnostics.py
@@ -29,6 +29,19 @@ async def async_get_config_entry_diagnostics(
             "mesh_role": avm_wrapper.mesh_role,
             "last_update success": avm_wrapper.last_update_success,
             "last_exception": avm_wrapper.last_exception,
+            "discovered_services": list(avm_wrapper.connection.services),
+            "client_devices": [
+                {
+                    "connected_to": device.connected_to,
+                    "connection_type": device.connection_type,
+                    "hostname": device.hostname,
+                    "is_connected": device.is_connected,
+                    "last_activity": device.last_activity,
+                    "wan_access": device.wan_access,
+                }
+                for _, device in avm_wrapper.devices.items()
+            ],
+            "wan_link_properties": await avm_wrapper.async_get_wan_link_properties(),
         },
     }