diff --git a/common/djangoapps/util/request.py b/common/djangoapps/util/request.py
index ed46d48b8f..922d0c25e1 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'^.*?/courses/{}'.format(settings.COURSE_ID_PATTERN))
+# accommodates course api urls, excluding any course api routes that do not fall under v*/courses, such as v1/blocks.
+COURSE_REGEX = re.compile(r'^(.*?/courses/)(?!v[0-9]+/[^/]+){}'.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..79e0e78f25 100644
--- a/common/djangoapps/util/tests/test_request.py
+++ b/common/djangoapps/util/tests/test_request.py
@@ -5,7 +5,6 @@ import unittest
 from django.conf import settings
 from django.core.exceptions import SuspiciousOperation
 from django.test.client import RequestFactory
-
 from util.request import course_id_from_url, safe_get_host
 
 
@@ -50,8 +49,24 @@ 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:incidental+courseid+formatting'))
+        self.assertIsNone(course_id_from_url('/api/courses/v41/notcourses/course-v1:incidental+courseid+formatting'))
+
+        course_id = course_id_from_url('/courses/course-v1:edX+maths+2020')
+        self.assertCourseIdFieldsMatch(course_id=course_id, org="edX", course='maths', run='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')
+        self.assertCourseIdFieldsMatch(course_id=course_id, org='edX', course='maths', run='2020')
+
+        course_id = course_id_from_url('/api/courses/v1/courses/course-v1:edX+maths+2020')
+        self.assertCourseIdFieldsMatch(course_id=course_id, org='edX', course='maths', run='2020')
+
+        course_id = course_id_from_url('/api/courses/v1/courses/edX/maths/2020')
+        self.assertCourseIdFieldsMatch(course_id=course_id, org='edX', course='maths', run='2020')
+
+    def assertCourseIdFieldsMatch(self, course_id, org, course, run):
+        """ Asserts that the passed-in course id matches the specified fields"""
+        self.assertEqual(course_id.org, org)
+        self.assertEqual(course_id.course, course)
+        self.assertEqual(course_id.run, run)