diff --git a/common/djangoapps/util/request.py b/common/djangoapps/util/request.py
index fcd5eed610..cdf052af6c 100644
--- a/common/djangoapps/util/request.py
+++ b/common/djangoapps/util/request.py
@@ -7,8 +7,8 @@ from microsite_configuration import microsite
 from opaque_keys import InvalidKeyError
 from opaque_keys.edx.locations import SlashSeparatedCourseKey
 
-
-COURSE_REGEX = re.compile(r'^.*?/(api/courses/v1/)?courses/{}'.format(settings.COURSE_ID_PATTERN))
+# accommodates course api urls, excluding /blocks routes.
+COURSE_REGEX = re.compile(r'^(.*?/courses/)+(?!v[0-9]+/blocks){}'.format(settings.COURSE_ID_PATTERN))
 
 
 def safe_get_host(request):
diff --git a/common/djangoapps/util/tests/test_request.py b/common/djangoapps/util/tests/test_request.py
index 87b4e3d958..6325ca8e7c 100644
--- a/common/djangoapps/util/tests/test_request.py
+++ b/common/djangoapps/util/tests/test_request.py
@@ -50,8 +50,26 @@ class ResponseTestCase(unittest.TestCase):
         self.assertIsNone(course_id_from_url('/login'))
         self.assertIsNone(course_id_from_url('/course/edX/maths/2020'))
         self.assertIsNone(course_id_from_url('/courses/edX/maths/'))
+        self.assertIsNone(course_id_from_url('/api/courses/v1/blocks/edX/maths/2020'))
+        self.assertIsNone(course_id_from_url('/api/courses/v1/blocks/course-v1:edX+maths+2020'))
 
         course_id = course_id_from_url('/courses/edX/maths/2020')
         self.assertEqual(course_id.org, 'edX')
         self.assertEqual(course_id.course, 'maths')
         self.assertEqual(course_id.run, '2020')
+
+        course_id = course_id_from_url('/courses/course-v1:edX+maths+2020')
+        self.assertEqual(course_id.org, 'edX')
+        self.assertEqual(course_id.course, 'maths')
+        self.assertEqual(course_id.run, '2020')
+
+        course_id = course_id_from_url('/api/courses/v1/courses/course-v1:edX+maths+2020')
+        self.assertEqual(course_id.org, 'edX')
+        self.assertEqual(course_id.course, 'maths')
+        self.assertEqual(course_id.run, '2020')
+
+        course_id = course_id_from_url('/api/courses/v1/courses/edX/maths/2020')
+        self.assertEqual(course_id.org, 'edX')
+        self.assertEqual(course_id.course, 'maths')
+        self.assertEqual(course_id.run, '2020')
+