diff --git a/main.py b/main.py
index f0077a9..06062e2 100755
--- a/main.py
+++ b/main.py
@@ -73,7 +73,16 @@ template_reverse = ("$TTL 2D\n"
 
 
 def write_dns_files(api_client):
-    for zone in api_client.list("dns/zones"):
+    dns_zones = api_client.list("dns/zones")
+    zone_names = {zone['name'][1:] for zone in dns_zones}
+    records_to_add = {name: {'a': [], 'aaaa': [], 'cname': []} for name in zone_names}
+
+    def add_record(zone, record, type):
+        nonlocal records_to_add
+        records_to_add[zone][type].append(record)
+        return False
+
+    for zone in sorted(dns_zones, key=lambda zone:zone['name'].count('.')):
         zone_name = zone['name'][1:]
 
         now = datetime.datetime.now(datetime.timezone.utc)
@@ -146,6 +155,7 @@ def write_dns_files(api_client):
             template_a.format(hostname=x['hostname'],
                               ipv4=x['ipv4'])
             for x in zone['a_records']
+                if (True if x['hostname'] + '.' + zone_name not in zone_names else add_record(x['hostname'] + '.' + zone_name, template_a.format(hostname='@', ipv4=ip['ipv4']), 'a'))
         )
 
         aaaa_records = "\n".join(
@@ -153,14 +163,25 @@ def write_dns_files(api_client):
                                  ipv6=ip['ipv6'])
             for x in zone['aaaa_records'] 
             for ip in x['ipv6']
-             if x['ipv6'] is not None
+                if x['ipv6'] is not None
+                and (True if x['hostname'] + '.' + zone_name not in zone_names else add_record(x['hostname'] + '.' + zone_name, template_aaaa.format(hostname='@', ipv6=ip['ipv6']), 'aaaa'))
         )
         
         cname_records = "\n".join(
             template_cname.format(hostname=x['hostname'],
                                   alias=x['alias'])
             for x in zone['cname_records']
+                if (True if x['hostname'] + '.' + zone_name not in zone_names else add_record(x['hostname'] + '.' + zone_name, template_cname.format(hostname='@', alias=x['alias']), 'cname'))
         )
+
+        if records_to_add[zone_name]['a']:
+            a_records += "\n" + "\n".join(records_to_add[zone_name]['a'])
+
+        if records_to_add[zone_name]['aaaa']:
+            aaaa_records += "\n" + "\n".join(records_to_add[zone_name]['aaaa'])
+
+        if records_to_add[zone_name]['cname']:
+            cname_records += "\n" + "\n".join(records_to_add[zone_name]['cname'])
     
         zone_file_content = template_zone.format(soa=soa,
                                                  originv4=originv4,
@@ -340,4 +361,6 @@ for service in api_client.list("services/regen/"):
         write_dns_files(api_client)
         write_dns_reverse_file(api_client)
         api_client.patch(service['api_url'], data={'need_regen': False})
-        os.system('/usr/sbin/knotc zone-reload >/dev/null 2>&1')
+        ok = os.system('/usr/sbin/knotc zone-reload >/dev/null 2>&1')
+        if not ok:
+            os.system('/usr/sbin/knotc zone-reload')