diff --git a/tools/fill_domain_ltd_by_dns.py b/tools/fill_domain_ltd_by_dns.py
index bdf24e4..bc3103d 100644
--- a/tools/fill_domain_ltd_by_dns.py
+++ b/tools/fill_domain_ltd_by_dns.py
@@ -10,6 +10,7 @@ Usage:
 """
 import os
 import socket
+import threading
 import argparse
 from sqlalchemy import create_engine, text
 
@@ -26,13 +27,21 @@ SUFFIXES = [
 
 
 def resolve(hostname, suffix, timeout):
-    """Retourne True si hostname.suffix resout en DNS."""
-    socket.setdefaulttimeout(timeout)
-    try:
-        socket.gethostbyname(f"{hostname}.{suffix}")
-        return True
-    except (socket.gaierror, socket.timeout, OSError):
-        return False
+    """Retourne True si hostname.suffix resout en DNS, timeout via thread."""
+    fqdn = f"{hostname}.{suffix}"
+    result = [False]
+
+    def _do():
+        try:
+            socket.gethostbyname(fqdn)
+            result[0] = True
+        except Exception:
+            result[0] = False
+
+    t = threading.Thread(target=_do, daemon=True)
+    t.start()
+    t.join(timeout)
+    return result[0]
 
 
 def main():
@@ -53,11 +62,12 @@ def main():
     print(f"[INFO] {len(rows)} serveurs sans domain_ltd")
 
     updated = skipped = 0
-    for r in rows:
+    for i, r in enumerate(rows, 1):
         h = (r.hostname or "").strip()
         if not h:
             skipped += 1
             continue
+        print(f"  [{i}/{len(rows)}] Resolve {h}...", flush=True)
         found = None
         for suffix in SUFFIXES:
             if resolve(h, suffix, args.timeout):
diff --git a/tools/tag_obsolete_os.py b/tools/tag_obsolete_os.py
index aea9b73..58f29f7 100644
--- a/tools/tag_obsolete_os.py
+++ b/tools/tag_obsolete_os.py
@@ -23,9 +23,10 @@ from sqlalchemy import create_engine, text
 DATABASE_URL = os.getenv("DATABASE_URL_DEMO") or os.getenv("DATABASE_URL") \
     or "postgresql://patchcenter:PatchCenter2026!@localhost:5432/patchcenter_demo"
 
-# Patterns regex (case-insensitive) sur os_version indiquant un OS EOL
+# OS deja en EOL complet (licence_support='obsolete')
 EOL_PATTERNS = [
-    (r"red\s*hat.*(?:release\s+)?[567]\b", "RHEL 5/6/7"),
+    (r"red\s*hat.*(?:release\s+)?[56]\b", "RHEL 5/6"),
+    (r"red\s*hat.*(?:release\s+)?7\b", "RHEL 7 (EOL 2024-06)"),
     (r"centos.*(?:release\s+)?[5678]\b", "CentOS 5/6/7/8"),
     (r"oracle.*linux.*(?:release\s+)?[567]\b", "Oracle Linux 5/6/7"),
     (r"windows.*2003", "Windows 2003"),
@@ -37,15 +38,24 @@ EOL_PATTERNS = [
     (r"suse.*(?:enterprise.*)?(?:server.*)?(?:sp\d\s*)?1[01]\b", "SUSE 10/11"),
 ]
 
+# OS avec support etendu (ELS) - licence_support='els'
+ELS_PATTERNS = [
+    # RHEL 7 est en ELS jusqu'en 2028 pour les clients payants
+    # On peut basculer certains vers ELS au lieu de obsolete au cas par cas
+]
+
 
 def classify(os_version):
     if not os_version:
-        return None
+        return (None, None)
     v = os_version.lower()
+    for pattern, label in ELS_PATTERNS:
+        if re.search(pattern, v):
+            return ("els", label)
     for pattern, label in EOL_PATTERNS:
         if re.search(pattern, v):
-            return label
-    return None
+            return ("obsolete", label)
+    return (None, None)
 
 
 def main():
@@ -70,28 +80,28 @@ def main():
     by_label = {}
 
     for r in rows:
-        label = classify(r.os_version)
-        if not label:
+        target, label = classify(r.os_version)
+        if not target:
             stats["not_eol"] += 1
             continue
-        if r.licence_support == "obsolete":
+        if r.licence_support == target:
             stats["already_obsolete"] += 1
             continue
-        # Si deja 'active' ou 'els', on ne touche pas sauf --overwrite
-        if r.licence_support in ("active", "els") and not args.overwrite:
+        # Si deja 'active' et qu'on veut passer en obsolete/els, skip sauf --overwrite
+        if r.licence_support == "active" and not args.overwrite:
             stats["skipped_active"] += 1
             if args.dry_run:
                 print(f"  SKIP (--overwrite pour forcer): {r.hostname:25s} "
-                      f"[{r.licence_support}] {label} | {r.os_version[:60]}")
+                      f"[active] -> {target} ({label}) | {r.os_version[:60]}")
             continue
 
-        by_label[label] = by_label.get(label, 0) + 1
+        by_label[f"{target} - {label}"] = by_label.get(f"{target} - {label}", 0) + 1
         if args.dry_run:
-            print(f"  DRY: {r.hostname:25s} [{r.licence_support or 'NULL'}] -> obsolete "
+            print(f"  DRY: {r.hostname:25s} [{r.licence_support or 'NULL'}] -> {target} "
                   f"({label}) | {r.os_version[:60]}")
         else:
-            conn.execute(text("UPDATE servers SET licence_support='obsolete' WHERE id=:sid"),
-                         {"sid": r.id})
+            conn.execute(text("UPDATE servers SET licence_support=:t WHERE id=:sid"),
+                         {"t": target, "sid": r.id})
         stats["tagged"] += 1
 
     conn.close()