diff --git a/machines/models.py b/machines/models.py
index 3017fbac..31f61223 100644
--- a/machines/models.py
+++ b/machines/models.py
@@ -285,10 +285,10 @@ class SOA(models.Model):
             '    {expire};expire\n'
             '    {ttl};TTL'
         ).format(
-            refresh=self.refresh,
-            retry=self.retry,
-            expire=self.expire,
-            ttl=self.expire
+            refresh=str(self.refresh).ljust(12),
+            retry=str(self.retry).ljust(12),
+            expire=str(self.expire).ljust(12),
+            ttl=str(self.ttl).ljust(12)
         )
 
     @cached_property
diff --git a/machines/serializers.py b/machines/serializers.py
index 7d222ef0..7d78ebc3 100644
--- a/machines/serializers.py
+++ b/machines/serializers.py
@@ -158,10 +158,11 @@ class ExtensionSerializer(serializers.ModelSerializer):
     des foreign_key donc evalués en get_..."""
     origin = serializers.SerializerMethodField('get_origin_ip')
     zone_entry = serializers.SerializerMethodField('get_zone_name')
+    soa = serializers.SerializerMethodField('get_soa_data')
 
     class Meta:
         model = Extension
-        fields = ('name', 'origin', 'origin_v6', 'zone_entry')
+        fields = ('name', 'origin', 'origin_v6', 'zone_entry', 'soa')
 
     def get_origin_ip(self, obj):
         return obj.origin.ipv4
@@ -169,6 +170,9 @@ class ExtensionSerializer(serializers.ModelSerializer):
     def get_zone_name(self, obj):
         return str(obj.dns_entry)
 
+    def get_soa_data(self, obj):
+        return { 'mail': obj.soa.dns_soa_mail, 'param': obj.soa.dns_soa_param }
+
 
 class MxSerializer(serializers.ModelSerializer):
     """Serialisation d'un MX, evaluation du nom, de la zone