diff --git a/payload/user/remote_access/pager-webui/server.py b/payload/user/remote_access/pager-webui/server.py
index c4d1d32..70cadb7 100644
--- a/payload/user/remote_access/pager-webui/server.py
+++ b/payload/user/remote_access/pager-webui/server.py
@@ -1158,6 +1158,12 @@ OUI_VENDORS = {
     'FC633E': 'Google', 'FCF080': 'Apple',
 }
 
+OUI_DATA_PATHS = [
+    '/usr/share/nmap/nmap-mac-prefixes',
+    '/usr/share/macchanger/OUI.list',
+]
+_oui_identity_cache = None
+
 
 def _oui_prefix(mac):
     """'C8:9E:43:64:80:80' / 'C89E43648080' -> 'C89E43' (uppercase, no colons)."""
@@ -1179,6 +1185,41 @@ def oui_vendor(mac):
     return OUI_VENDORS.get(prefix, 'Unknown')
 
 
+def oui_identity(mac):
+    """Resolve a MAC to a JSON-safe manufacturer identity."""
+    global _oui_identity_cache
+    prefix = _oui_prefix(mac)
+    if prefix is None:
+        return {'manufacturer': 'Unknown', 'model': None, 'oui': None,
+                'source': 'unknown'}
+    if int(prefix[1], 16) & 2:
+        return {'manufacturer': 'Local/Randomized', 'model': None, 'oui': prefix,
+                'source': 'local'}
+
+    if _oui_identity_cache is None:
+        _oui_identity_cache = {}
+        for path, source in zip(OUI_DATA_PATHS, ('nmap', 'macchanger')):
+            try:
+                with open(path, 'r') as data_file:
+                    for line in data_file:
+                        match = re.match(r'^\s*([0-9A-Fa-f:.-]+)\s+(.+)$', line)
+                        if not match:
+                            continue
+                        line_prefix = _oui_prefix(match.group(1))
+                        if line_prefix and line_prefix not in _oui_identity_cache:
+                            name = match.group(2).strip()
+                            if name:
+                                _oui_identity_cache[line_prefix] = (name, source)
+            except (OSError, IOError):
+                continue
+
+    manufacturer, source = _oui_identity_cache.get(
+        prefix, (OUI_VENDORS.get(prefix, 'Unknown'),
+                 'builtin' if prefix in OUI_VENDORS else 'unknown'))
+    return {'manufacturer': manufacturer, 'model': None, 'oui': prefix,
+            'source': source}
+
+
 def band_of(freq):
     """Channel frequency (MHz) -> '2.4' | '5' | '6' | '--'."""
     if freq is None:
diff --git a/tests/test_recon.py b/tests/test_recon.py
index 420d814..5cb3320 100644
--- a/tests/test_recon.py
+++ b/tests/test_recon.py
@@ -896,6 +896,58 @@ class OuiVendorTest(unittest.TestCase):
         self.assertEqual(server.oui_vendor(None), 'Unknown')
         self.assertEqual(server.oui_vendor('--'), 'Unknown')
 
+    def test_oui_identity_prefers_nmap_then_macchanger(self):
+        server._oui_identity_cache = None
+        files = {
+            '/nmap': 'C89E43 Apple Corporation\n',
+            '/mac': 'C89E43 fallback\n',
+        }
+        with mock.patch.object(server, 'OUI_DATA_PATHS', ['/nmap', '/mac']), \
+                mock.patch('builtins.open', side_effect=lambda p, *a, **k:
+                            mock.mock_open(read_data=files[p]).return_value):
+            value = server.oui_identity('C89E43648080')
+        self.assertEqual(value['manufacturer'], 'Apple Corporation')
+        self.assertEqual(value['source'], 'nmap')
+        self.assertIsNone(value['model'])
+
+    def test_oui_identity_uses_macchanger_when_nmap_is_missing(self):
+        server._oui_identity_cache = None
+        files = {'/mac': 'C8-9E-43 fallback\n'}
+
+        def open_file(path, *args, **kwargs):
+            if path not in files:
+                raise OSError('missing')
+            return mock.mock_open(read_data=files[path]).return_value
+
+        with mock.patch.object(server, 'OUI_DATA_PATHS', ['/nmap', '/mac']), \
+                mock.patch('builtins.open', side_effect=open_file):
+            value = server.oui_identity('C89E43648080')
+        self.assertEqual(value['manufacturer'], 'fallback')
+        self.assertEqual(value['source'], 'macchanger')
+
+    def test_oui_identity_handles_missing_files_unknown_and_local(self):
+        server._oui_identity_cache = None
+        with mock.patch.object(server, 'OUI_DATA_PATHS', ['/missing']), \
+                mock.patch('builtins.open', side_effect=OSError('missing')):
+            unknown = server.oui_identity('AC:BB:CC:00:00:01')
+        self.assertEqual(unknown['manufacturer'], 'Unknown')
+        self.assertEqual(unknown['source'], 'unknown')
+        self.assertEqual(unknown['oui'], 'ACBBCC')
+        self.assertIsNone(unknown['model'])
+
+        local = server.oui_identity('02:11:22:33:44:55')
+        self.assertEqual(local['manufacturer'], 'Local/Randomized')
+        self.assertEqual(local['source'], 'local')
+        self.assertEqual(local['oui'], '021122')
+
+    def test_oui_identity_falls_back_to_builtin_vendors(self):
+        server._oui_identity_cache = None
+        with mock.patch.object(server, 'OUI_DATA_PATHS', []):
+            value = server.oui_identity('B8:27:EB:00:00:00')
+        self.assertEqual(value['manufacturer'], 'Raspberry Pi')
+        self.assertEqual(value['source'], 'builtin')
+        self.assertIsNone(value['model'])
+
     def test_band_of_frequencies(self):
         self.assertEqual(server.band_of(2412), '2.4')
         self.assertEqual(server.band_of(5200), '5')