diff --git a/share/config_domain.toml b/share/config_domain.toml
index 0a3ba96cc..88714525d 100644
--- a/share/config_domain.toml
+++ b/share/config_domain.toml
@@ -50,9 +50,7 @@ name = "Features"
 name = "DNS"
 
     [dns.registrar]
-    optional = true
-
-        # This part is automatically generated in DomainConfigPanel
+    # This part is automatically generated in DomainConfigPanel
 
 #   [dns.advanced]
 #
diff --git a/src/dns.py b/src/dns.py
index 1d0b4486f..318a5fcde 100644
--- a/src/dns.py
+++ b/src/dns.py
@@ -41,6 +41,7 @@ from yunohost.domain import (
     _get_domain_settings,
     _set_domain_settings,
     _list_subdomains_of,
+    _get_parent_domain_of,
 )
 from yunohost.utils.dns import dig, is_yunohost_dyndns_domain, is_special_use_tld
 from yunohost.utils.error import YunohostValidationError, YunohostError
@@ -446,8 +447,8 @@ def _get_dns_zone_for_domain(domain):
     # This is another strick to try to prevent this function from being
     # a bottleneck on system with 1 main domain + 10ish subdomains
     # when building the dns conf for the main domain (which will call domain_config_get, etc...)
-    parent_domain = domain.split(".", 1)[1]
-    if parent_domain in domain_list()["domains"]:
+    parent_domain = _get_parent_domain_of(domain)
+    if parent_domain:
         parent_cache_file = f"{cache_folder}/{parent_domain}"
         if (
             os.path.exists(parent_cache_file)
@@ -512,17 +513,19 @@ def _get_registrar_config_section(domain):
 
     from lexicon.providers.auto import _relevant_provider_for_domain
 
-    registrar_infos = {}
+    registrar_infos = {
+        "name": m18n.n('registrar_infos'),   # This is meant to name the config panel section, for proper display in the webadmin
+    }
 
     dns_zone = _get_dns_zone_for_domain(domain)
 
     # If parent domain exists in yunohost
-    parent_domain = domain.split(".", 1)[1]
-    if parent_domain in domain_list()["domains"]:
+    parent_domain = _get_parent_domain_of(domain, topest=True)
+    if parent_domain:
 
         # Dirty hack to have a link on the webadmin
         if Moulinette.interface.type == "api":
-            parent_domain_link = f"[{parent_domain}](#/domains/{parent_domain}/config)"
+            parent_domain_link = f"[{parent_domain}](#/domains/{parent_domain}/dns)"
         else:
             parent_domain_link = parent_domain
 
@@ -532,7 +535,7 @@ def _get_registrar_config_section(domain):
                 "style": "info",
                 "ask": m18n.n(
                     "domain_dns_registrar_managed_in_parent_domain",
-                    parent_domain=domain,
+                    parent_domain=parent_domain,
                     parent_domain_link=parent_domain_link,
                 ),
                 "value": "parent_domain",
@@ -647,7 +650,7 @@ def domain_dns_push(operation_logger, domain, dry_run=False, force=False, purge=
         return {}
 
     if registrar == "parent_domain":
-        parent_domain = domain.split(".", 1)[1]
+        parent_domain = _get_parent_domain_of(domain, topest=True)
         registar, registrar_credentials = _get_registar_settings(parent_domain)
         if any(registrar_credentials.values()):
             raise YunohostValidationError(
diff --git a/src/domain.py b/src/domain.py
index 97832a065..85720d022 100644
--- a/src/domain.py
+++ b/src/domain.py
@@ -95,7 +95,7 @@ def _get_domains(exclude_subdomains=False):
         return [
             domain
             for domain in domain_list_cache
-            if not _get_parent_domain_of(domain, return_self=False)
+            if not _get_parent_domain_of(domain)
         ]
 
     return domain_list_cache
@@ -167,7 +167,7 @@ def domain_info(domain):
         "registrar": registrar,
         "apps": apps,
         "main": _get_maindomain() == domain,
-        "topest_parent": _get_parent_domain_of(domain, return_self=True, topest=True),
+        "topest_parent": _get_parent_domain_of(domain, topest=True),
         # TODO : add parent / child domains ?
     }
 
@@ -189,7 +189,7 @@ def _list_subdomains_of(parent_domain):
     return out
 
 
-def _get_parent_domain_of(domain, return_self=True, topest=False):
+def _get_parent_domain_of(domain, return_self=False, topest=False):
 
     _assert_domain_exists(domain)