diff --git a/librespot/core.py b/librespot/core.py
index 4fd8afc..c9014d6 100644
--- a/librespot/core.py
+++ b/librespot/core.py
@@ -1097,10 +1097,13 @@ class Session(Closeable, MessageListener, SubListener):
         def blob(self, username: str, blob: bytes) -> Session.Builder:
             if self.device_id is None:
                 raise TypeError("You must specify the device ID first.")
-            self.login_credentials = self.decrypt_blob(self.device_id, username, blob)
+            self.login_credentials = self.decrypt_blob(self.device_id,
+                                                       username, blob)
             return self
 
-        def decrypt_blob(self, device_id: str, username: str, encrypted_blob: bytes) -> Authentication.LoginCredentials:
+        def decrypt_blob(
+                self, device_id: str, username: str,
+                encrypted_blob: bytes) -> Authentication.LoginCredentials:
             encrypted_blob = base64.b64decode(encrypted_blob)
             sha1 = SHA1.new()
             sha1.update(device_id.encode())
@@ -1119,7 +1122,9 @@ class Session(Closeable, MessageListener, SubListener):
             type_int = self.read_blob_int(blob)
             type_ = Authentication.AuthenticationType.Name(type_int)
             if type_ is None:
-                raise IOError(TypeError("Unknown AuthenticationType: {}".format(type_int)))
+                raise IOError(
+                    TypeError(
+                        "Unknown AuthenticationType: {}".format(type_int)))
             le = self.read_blob_int(blob)
             auth_data = blob.read(le)
             return Authentication.LoginCredentials(
diff --git a/librespot/zeroconf.py b/librespot/zeroconf.py
index d7fa5f9..87042e4 100644
--- a/librespot/zeroconf.py
+++ b/librespot/zeroconf.py
@@ -71,8 +71,8 @@ class ZeroconfServer(Closeable):
                 "CPath": "/",
                 "VERSION": "1.0",
                 "STACK": "SP",
-            }, self.get_useful_hostname() + ".",
-            addresses=[socket.inet_aton(socket.gethostbyname(self.get_useful_hostname()))]
+            },
+            inner.device_name,
         )
         self.__zeroconf.register_service(self.__service_info)
         threading.Thread(target=self.__zeroconf.start, name="zeroconf-multicast-dns-server").start()
@@ -81,13 +81,6 @@ class ZeroconfServer(Closeable):
         self.__zeroconf.close()
         self.__runner.close()
 
-    def get_useful_hostname(self) -> str:
-        host = socket.gethostname()
-        if host == "localhost":
-            pass
-        else:
-            return host
-
     def handle_add_user(self, __socket: socket.socket, params: dict[str, str], http_version: str) -> None:
         username = params.get("userName")
         if not username: