diff --git a/api/endpoints/netscan.php b/api/endpoints/netscan.php
index 5eae700..fa47cbd 100644
--- a/api/endpoints/netscan.php
+++ b/api/endpoints/netscan.php
@@ -48,6 +48,23 @@ foreach ($devices as $d) {
             [$vendor, $ip]
         );
     }
+    // Store SIP registration status in kb_facts if provided (VoIP probe)
+    $sipStatus = trim($d['sip_status'] ?? '');
+    $extension = trim($d['extension']  ?? '');
+    if ($sipStatus && $extension && $extension !== 'none') {
+        JarvisDB::execute(
+            "INSERT INTO kb_facts (category, fact_key, fact_value, host)
+             VALUES ('voip', ?, ?, ?)
+             ON DUPLICATE KEY UPDATE fact_value=VALUES(fact_value), updated_at=NOW()",
+            ["ext_{$extension}_sip", $sipStatus, $ip]
+        );
+        JarvisDB::execute(
+            "INSERT INTO kb_facts (category, fact_key, fact_value, host)
+             VALUES ('voip', ?, ?, ?)
+             ON DUPLICATE KEY UPDATE fact_value=VALUES(fact_value), updated_at=NOW()",
+            ["ext_{$extension}_ip", $ip, $ip]
+        );
+    }
     $upserted++;
 }