diff --git a/octodns/manager.py b/octodns/manager.py
index 1fe8378..3b4ab8f 100644
--- a/octodns/manager.py
+++ b/octodns/manager.py
@@ -528,8 +528,7 @@ class Manager(object):
             for source in sources:
                 if not hasattr(source, 'list_zones'):
                     raise ManagerException(
-                        f'dynamic zone=%s includes a source that does not support `list_zones`',
-                        name,
+                        f'dynamic zone={name} includes a source that does not support `list_zones`',
                     )
                 for zone_name in source.list_zones():
                     if zone_name in zones:
diff --git a/octodns/provider/yaml.py b/octodns/provider/yaml.py
index 88d9023..1d495a9 100644
--- a/octodns/provider/yaml.py
+++ b/octodns/provider/yaml.py
@@ -192,7 +192,7 @@ class YamlProvider(BaseProvider):
 
     def list_zones(self):
         for filename in listdir(self.directory):
-            if not filename.endswith('.yaml'):
+            if not filename.endswith('.yaml') or filename.count('.') < 2:
                 continue
             yield filename[:-4]
 
@@ -330,6 +330,13 @@ class SplitYamlProvider(YamlProvider):
         filename = f'{zone.name[:-1]}{self.extension}'
         return join(self.directory, filename)
 
+    def list_zones(self):
+        n = len(self.extension) - 1
+        for filename in listdir(self.directory):
+            if not filename.endswith(self.extension):
+                continue
+            yield filename[:-n]
+
     def populate(self, zone, target=False, lenient=False):
         self.log.debug(
             'populate: name=%s, target=%s, lenient=%s',
diff --git a/tests/config/split/other.thing/.gitkeep b/tests/config/split/other.thing/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/tests/test_octodns_provider_yaml.py b/tests/test_octodns_provider_yaml.py
index 1796bb4..b2a4433 100644
--- a/tests/test_octodns_provider_yaml.py
+++ b/tests/test_octodns_provider_yaml.py
@@ -296,6 +296,18 @@ xn--dj-kia8a:
         self.assertTrue(source.supports(DummyType(source)))
         self.assertTrue(source.supports(DummyType(self)))
 
+    def test_list_zones(self):
+        provider = YamlProvider('test', 'tests/config')
+        self.assertEqual(
+            [
+                'dynamic.tests.',
+                'sub.txt.unit.tests.',
+                'subzone.unit.tests.',
+                'unit.tests.',
+            ],
+            sorted(provider.list_zones()),
+        )
+
 
 class TestSplitYamlProvider(TestCase):
     def test_list_all_yaml_files(self):
@@ -570,6 +582,21 @@ class TestSplitYamlProvider(TestCase):
         )
         self.assertEqual(source.supports_root_ns, copy.supports_root_ns)
 
+    def test_list_zones(self):
+        provider = SplitYamlProvider(
+            'test', 'tests/config/split', extension='.tst'
+        )
+        self.assertEqual(
+            [
+                'dynamic.tests.',
+                'empty.',
+                'subzone.unit.tests.',
+                'unit.tests.',
+                'unordered.',
+            ],
+            sorted(provider.list_zones()),
+        )
+
 
 class TestOverridingYamlProvider(TestCase):
     def test_provider(self):