diff --git a/readthedocs/core/utils/__init__.py b/readthedocs/core/utils/__init__.py
index c4e33769690..50f33957a66 100644
--- a/readthedocs/core/utils/__init__.py
+++ b/readthedocs/core/utils/__init__.py
@@ -61,14 +61,8 @@ def broadcast(type, task, args, kwargs=None, callback=None):  # pylint: disable=
     return task_promise
 
 
-def clean_url(url):
-    parsed = urlparse(url)
-    if parsed.scheme or parsed.netloc:
-        return parsed.netloc
-    return parsed.path
-
-
 def cname_to_slug(host):
+    # TODO: remove
     from dns import resolver
     answer = [ans for ans in resolver.query(host, 'CNAME')][0]
     domain = answer.target.to_unicode()
diff --git a/readthedocs/restapi/urls.py b/readthedocs/restapi/urls.py
index 4d6e34e992d..02f7c5315f9 100644
--- a/readthedocs/restapi/urls.py
+++ b/readthedocs/restapi/urls.py
@@ -65,7 +65,6 @@
 function_urls = [
     url(r'embed/', core_views.embed, name='embed'),
     url(r'docurl/', core_views.docurl, name='docurl'),
-    url(r'cname/', core_views.cname, name='cname'),
     url(r'footer_html/', footer_views.footer_html, name='footer_html'),
 ]
 
diff --git a/readthedocs/restapi/views/core_views.py b/readthedocs/restapi/views/core_views.py
index d98d2667ec0..ce56389327d 100644
--- a/readthedocs/restapi/views/core_views.py
+++ b/readthedocs/restapi/views/core_views.py
@@ -13,40 +13,12 @@
 from django.core.cache import cache
 from django.shortcuts import get_object_or_404
 
-from readthedocs.core.utils import clean_url, cname_to_slug
 from readthedocs.builds.constants import LATEST
 from readthedocs.builds.models import Version
 from readthedocs.projects.models import Project
 from readthedocs.core.templatetags.core_tags import make_document_url
 
 
-@decorators.api_view(['GET'])
-@decorators.permission_classes((permissions.AllowAny,))
-@decorators.renderer_classes((JSONRenderer,))
-def cname(request):
-    """
-    Get the slug that a particular hostname resolves to.
-
-    This is useful for debugging your DNS settings,
-    or for getting the backing project name on Read the Docs for a URL.
-
-    Example::
-
-        GET https://readthedocs.org/api/v2/cname/?host=docs.python-requests.org
-
-    This will return information about ``docs.python-requests.org``
-    """
-    host = request.GET.get('host')
-    if not host:
-        return Response({'error': 'host GET arg required'}, status=status.HTTP_400_BAD_REQUEST)
-    host = clean_url(host)
-    slug = cname_to_slug(host)
-    return Response({
-        'host': host,
-        'slug': slug,
-    })
-
-
 @decorators.api_view(['GET'])
 @decorators.permission_classes((permissions.AllowAny,))
 @decorators.renderer_classes((JSONRenderer,))