diff --git a/homeassistant/helpers/network.py b/homeassistant/helpers/network.py
index 8bdfc286c1a..9cff5058a00 100644
--- a/homeassistant/helpers/network.py
+++ b/homeassistant/helpers/network.py
@@ -88,10 +88,12 @@ def get_url(
             scheme=scheme, host=request_host, port=hass.config.api.port
         )
 
-        known_hostname = None
+        known_hostnames = ["localhost"]
         if hass.components.hassio.is_hassio():
             host_info = hass.components.hassio.get_host_info()
-            known_hostname = f"{host_info['hostname']}.local"
+            known_hostnames.extend(
+                [host_info["hostname"], f"{host_info['hostname']}.local"]
+            )
 
         if (
             (
@@ -100,7 +102,7 @@ def get_url(
                     and is_ip_address(request_host)
                     and is_loopback(ip_address(request_host))
                 )
-                or request_host in ["localhost", known_hostname]
+                or request_host in known_hostnames
             )
             and (not require_ssl or current_url.scheme == "https")
             and (not require_standard_port or current_url.is_default_port())
diff --git a/tests/helpers/test_network.py b/tests/helpers/test_network.py
index ed97b3e3757..495c9d511bd 100644
--- a/tests/helpers/test_network.py
+++ b/tests/helpers/test_network.py
@@ -848,6 +848,14 @@ async def test_get_current_request_url_with_known_host(
             == "http://homeassistant.local:8123"
         )
 
+    with patch(
+        "homeassistant.helpers.network._get_request_host",
+        return_value="homeassistant",
+    ):
+        assert (
+            get_url(hass, require_current_request=True) == "http://homeassistant:8123"
+        )
+
     with patch(
         "homeassistant.helpers.network._get_request_host", return_value="unknown.local"
     ), pytest.raises(NoURLAvailableError):