diff --git a/netx_api/ume_sync_service.py b/netx_api/ume_sync_service.py
index a487bbd..347d493 100644
--- a/netx_api/ume_sync_service.py
+++ b/netx_api/ume_sync_service.py
@@ -3,6 +3,7 @@ from __future__ import annotations
 import json
 import logging
 import hashlib
+import re
 from datetime import datetime, timezone
 from typing import Any
 
@@ -81,6 +82,13 @@ def _derive_ne_id_from_alarm(alarm: dict[str, Any]) -> str:
     parts = [p for p in alarm_key.split() if p]
     if len(parts) >= 2:
         return _s(parts[0])
+
+    # Fallback: some alarms encode net_id as ME{<net_id>} in objectName.
+    object_name = _s(_pick(alarm, "objectName", "object-name"))
+    if object_name:
+        m = re.search(r"ME\{([^}]+)\}", object_name, flags=re.IGNORECASE)
+        if m:
+            return _s(m.group(1))
     return ""
 
 
diff --git a/tests/test_ume_sync.py b/tests/test_ume_sync.py
index 24ef76e..ddcf87b 100644
--- a/tests/test_ume_sync.py
+++ b/tests/test_ume_sync.py
@@ -487,6 +487,7 @@ class UmeSyncServiceTests(unittest.TestCase):
         alarm_hash = {"alarmkey": "00ceb960-1b62-478e-8303-0935ffea1d28#99010"}
         alarm_csv = {"alarmkey": "00ceb960-1b62-478e-8303-0935ffea1d28, 4237, 79"}
         alarm_space = {"alarmkey": "00ceb960-1b62-478e-8303-0935ffea1d28 4205 3588"}
+        alarm_object_name_me = {"alarmkey": "no-net-id-here", "objectName": "OLT/ME{00ceb960-1b62-478e-8303-0935ffea1d28}/PON-1"}
 
         self.assertEqual(
             _derive_ne_id_from_alarm(alarm_hash),
@@ -500,6 +501,10 @@ class UmeSyncServiceTests(unittest.TestCase):
             _derive_ne_id_from_alarm(alarm_space),
             "00ceb960-1b62-478e-8303-0935ffea1d28",
         )
+        self.assertEqual(
+            _derive_ne_id_from_alarm(alarm_object_name_me),
+            "00ceb960-1b62-478e-8303-0935ffea1d28",
+        )
 
     def test_serialize_ume_alarm_raw_row_select_fields(self):
         alarm = UmeAlarmCurrent(