diff --git a/octodns/provider/constellix.py b/octodns/provider/constellix.py
index 5ca89e1..7829386 100644
--- a/octodns/provider/constellix.py
+++ b/octodns/provider/constellix.py
@@ -44,7 +44,7 @@ class ConstellixClientNotFound(ConstellixClientException):
 
 
 class ConstellixClient(object):
-    BASE = 'https://api.dns.constellix.com/v1/domains'
+    BASE = 'https://api.dns.constellix.com/v1'
 
     def __init__(self, api_key, secret_key, ratelimit_delay=0.0):
         self.api_key = api_key
@@ -88,7 +88,7 @@ class ConstellixClient(object):
         if self._domains is None:
             zones = []
 
-            resp = self._request('GET', '').json()
+            resp = self._request('GET', '/domains').json()
             zones += resp
 
             self._domains = {'{}.'.format(z['name']): z['id'] for z in zones}
@@ -103,7 +103,7 @@ class ConstellixClient(object):
         return self._request('GET', path).json()
 
     def domain_create(self, name):
-        resp = self._request('POST', '/', data={'names': [name]})
+        resp = self._request('POST', '/domains', data={'names': [name]})
         # Add newly created zone to domain cache
         self._domains['{}.'.format(name)] = resp.json()[0]['id']
 
@@ -119,7 +119,7 @@ class ConstellixClient(object):
         zone_id = self.domains.get(zone_name, False)
         if not zone_id:
             raise ConstellixClientNotFound()
-        path = '/{}/records'.format(zone_id)
+        path = '/domains/{}/records'.format(zone_id)
 
         resp = self._request('GET', path).json()
         for record in resp:
@@ -151,7 +151,7 @@ class ConstellixClient(object):
             record_type = 'ANAME'
 
         zone_id = self.domains.get(zone_name, False)
-        path = '/{}/records/{}'.format(zone_id, record_type)
+        path = '/domains/{}/records/{}'.format(zone_id, record_type)
 
         self._request('POST', path, data=params)
 
@@ -161,7 +161,8 @@ class ConstellixClient(object):
             record_type = 'ANAME'
 
         zone_id = self.domains.get(zone_name, False)
-        path = '/{}/records/{}/{}'.format(zone_id, record_type, record_id)
+        path = '/domains/{}/records/{}/{}'.format(zone_id, record_type,
+                                                  record_id)
         self._request('DELETE', path)
 
 
diff --git a/tests/test_octodns_provider_constellix.py b/tests/test_octodns_provider_constellix.py
index 151d0d4..52a6b4c 100644
--- a/tests/test_octodns_provider_constellix.py
+++ b/tests/test_octodns_provider_constellix.py
@@ -144,15 +144,15 @@ class TestConstellixProvider(TestCase):
 
         provider._client._request.assert_has_calls([
             # get all domains to build the cache
-            call('GET', ''),
+            call('GET', '/domains'),
             # created the domain
-            call('POST', '/', data={'names': ['unit.tests']})
+            call('POST', '/domains', data={'names': ['unit.tests']})
         ])
         # These two checks are broken up so that ordering doesn't break things.
         # Python3 doesn't make the calls in a consistent order so different
         # things follow the GET / on different runs
         provider._client._request.assert_has_calls([
-            call('POST', '/123123/records/SRV', data={
+            call('POST', '/domains/123123/records/SRV', data={
                 'roundRobin': [{
                     'priority': 10,
                     'weight': 20,
@@ -218,14 +218,14 @@ class TestConstellixProvider(TestCase):
 
         # recreate for update, and deletes for the 2 parts of the other
         provider._client._request.assert_has_calls([
-            call('POST', '/123123/records/A', data={
+            call('POST', '/domains/123123/records/A', data={
                 'roundRobin': [{
                     'value': '3.2.3.4'
                 }],
                 'name': 'ttl',
                 'ttl': 300
             }),
-            call('DELETE', '/123123/records/A/11189897'),
-            call('DELETE', '/123123/records/A/11189898'),
-            call('DELETE', '/123123/records/ANAME/11189899')
+            call('DELETE', '/domains/123123/records/A/11189897'),
+            call('DELETE', '/domains/123123/records/A/11189898'),
+            call('DELETE', '/domains/123123/records/ANAME/11189899')
         ], any_order=True)