diff --git a/dyndnshelper/main.py b/dyndnshelper/main.py
index 999baed..6b298d8 100644
--- a/dyndnshelper/main.py
+++ b/dyndnshelper/main.py
@@ -25,3 +25,7 @@ def run():
     )
     server = uvicorn.Server(config)
     server.run()
+
+
+if __name__ == 'main':
+    run()
diff --git a/dyndnshelper/routers/fqdns.py b/dyndnshelper/routers/fqdns.py
index 379a6fe..0a9d423 100644
--- a/dyndnshelper/routers/fqdns.py
+++ b/dyndnshelper/routers/fqdns.py
@@ -56,8 +56,8 @@ def check_credentials_for_fqdn(
 async def dyndns(
     username: Annotated[str, Depends(check_credentials_for_fqdn)],
     fqdn_settings: Annotated[FQDNSettings, Depends(get_fqdn_settings)],
-    ip: Annotated[list[IPv4Address | IPv6Address | EmptyStr], Query()] = None,
-    ipv6lanprefix: Annotated[IPv6Network, Query()] = None,
+    ip: Annotated[list[IPv4Address | IPv6Address | EmptyStr], Query(description='IPv4 or IPv6 addresses')] = None,
+    ipv6lanprefix: Annotated[IPv6Network, Query(description='IPv6 Network with Prefix. Will be used to update AAAA records for configured IIDs')] = None,
     dualstack: Annotated[bool, Query()] = None
 ):
     if ip:
@@ -72,7 +72,7 @@ async def dyndns(
         )
 
     if ip:
-        LOGGER.debug(f'DynDNS FQDN {fqdn_settings.fqdn} with IPs {", ".join(map(str, ip))}')
+        LOGGER.debug(f'{username} -DynDNS FQDN {fqdn_settings.fqdn} with IPs {", ".join(map(str, ip))}')
         vendor = CONFIG.vendors.get_vendor(fqdn_settings.vendor)
         await vendor.ensure_fqdn(
             fqdn=fqdn_settings.fqdn,
@@ -86,7 +86,7 @@ async def dyndns(
         # and we have to bitwise OR network address with iid address
         netaddr_ipv6lanprefix_address = IPNetwork(str(ipv6lanprefix)).network
         for iid_fqdn, iid in fqdn_settings.ipv6_lan_prefix_iid_map.items():
-            LOGGER.debug(f'DynDNS IID FQDN {iid_fqdn} {iid} with IPv6 LAN Prefix {ipv6lanprefix}')
+            LOGGER.debug(f'{username} - DynDNS IID FQDN {iid_fqdn} {iid} with IPv6 LAN Prefix {ipv6lanprefix}')
             netaddr_iid_address = IPAddress(str(iid))
             combined_address = IPv6Address(str(netaddr_ipv6lanprefix_address | netaddr_iid_address))
 
diff --git a/dyndnshelper/settings.py b/dyndnshelper/settings.py
index c55968c..30ce2b5 100644
--- a/dyndnshelper/settings.py
+++ b/dyndnshelper/settings.py
@@ -116,6 +116,11 @@ class Vendors(BaseModel):
     hetzner: HetznerSettings = Field(default_factory=HetznerSettings)
 
     def get_vendor(self, name: VendorNames) -> Vendor:
+        """
+        returns initialized vendor class
+
+        raises ValueError if vendor is not defined
+        """
         vendor_settings = getattr(self, name, None)
         if not vendor_settings:
             raise ValueError(f'No vendor settings found for name `{name}`')
diff --git a/dyndnshelper/vendors/hetzner.py b/dyndnshelper/vendors/hetzner.py
index 91bffcd..d991d10 100644
--- a/dyndnshelper/vendors/hetzner.py
+++ b/dyndnshelper/vendors/hetzner.py
@@ -27,6 +27,9 @@ class HetznerZone(BaseModel):
     name: str
     ttl: int
 
+    def __str__(self):
+        return f'{self.id}/{self.name}'
+
     @property
     def update_dict(self):
         return self.model_dump(
@@ -45,6 +48,9 @@ class HetznerRecord(BaseModel):
     value: str
     ttl: int
 
+    def __str__(self):
+        return f'{self.id}/{self.name}/{self.type}'
+
     @property
     def update_dict(self):
         return self.model_dump(
@@ -139,7 +145,7 @@ class Hetzner(Vendor):
         return HetznerRecord(**record)
 
     async def update_record(self, record: HetznerRecord) -> HetznerRecord:
-        self.logger.info(f'Updating {record.id} / {record.type} record {record.name} in zone {record.zone_id}: {record.value}')
+        self.logger.info(f'Updating {record} in zone {record.zone_id}: {record.value}')
         response = await self.api_put(
             url=f'{self.settings.api_url}/records/{record.id}',
             json=record.update_dict