diff --git a/requirements/tests.in b/requirements/tests.in
index 0db91b605dc5..0c8c524f062c 100644
--- a/requirements/tests.in
+++ b/requirements/tests.in
@@ -4,6 +4,7 @@ freezegun
 pretend
 pytest>=3.0.0
 pytest-icdiff
+pytest-mock
 pytest-postgresql>=3.1.3,<8.0.0
 pytest-randomly
 pytest-socket
diff --git a/requirements/tests.txt b/requirements/tests.txt
index 110aa87c7be1..4c6e6020e38c 100644
--- a/requirements/tests.txt
+++ b/requirements/tests.txt
@@ -252,6 +252,7 @@ pytest==8.3.5 \
     # via
     #   -r requirements/tests.in
     #   pytest-icdiff
+    #   pytest-mock
     #   pytest-postgresql
     #   pytest-randomly
     #   pytest-socket
@@ -261,6 +262,10 @@ pytest-icdiff==0.9 \
     --hash=sha256:13aede616202e57fcc882568b64589002ef85438046f012ac30a8d959dac8b75 \
     --hash=sha256:efee0da3bd1b24ef2d923751c5c547fbb8df0a46795553fba08ef57c3ca03d82
     # via -r requirements/tests.in
+pytest-mock==3.14.0 \
+    --hash=sha256:0b72c38033392a5f4621342fe11e9219ac11ec9d375f8e2a0c164539e0d70f6f \
+    --hash=sha256:2719255a1efeceadbc056d6bf3df3d1c5015530fb40cf347c0f9afac88410bd0
+    # via -r requirements/tests.in
 pytest-postgresql==7.0.1 \
     --hash=sha256:7723dfbfc57ea6f6f9876c2828e7b36f8b0e60b6cb040b1ddd444a60eed06e0a \
     --hash=sha256:cbc6a67bbad5128b1f00def8cca5cf597020acc79893723f7a9cb60981b6840f
diff --git a/tests/conftest.py b/tests/conftest.py
index c16f1137339e..d8c9310704cf 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -550,8 +550,10 @@ def search_service():
 
 
 @pytest.fixture
-def domain_status_service():
-    return account_services.NullDomainStatusService()
+def domain_status_service(mocker):
+    service = account_services.NullDomainStatusService()
+    mocker.spy(service, "get_domain_status")
+    return service
 
 
 class QueryRecorder:
diff --git a/tests/unit/admin/views/test_users.py b/tests/unit/admin/views/test_users.py
index bf9cf89a2364..57cb7f2ddf37 100644
--- a/tests/unit/admin/views/test_users.py
+++ b/tests/unit/admin/views/test_users.py
@@ -20,6 +20,7 @@
 from sqlalchemy.orm import joinedload
 from webob.multidict import MultiDict, NoVars
 
+from warehouse.accounts import IDomainStatusService
 from warehouse.accounts.interfaces import IEmailBreachedService, IUserService
 from warehouse.accounts.models import (
     DisableReason,
@@ -1542,7 +1543,7 @@ def test_no_recovery_codes_provided(self, db_request, monkeypatch, user_service)
 
 
 class TestUserEmailDomainCheck:
-    def test_user_email_domain_check(self, db_request):
+    def test_user_email_domain_check(self, db_request, domain_status_service, mocker):
         user = UserFactory.create(with_verified_primary_email=True)
         db_request.POST["email_address"] = user.primary_email.email
         db_request.route_path = pretend.call_recorder(lambda *a, **kw: "/foobar")
@@ -1550,6 +1551,8 @@ def test_user_email_domain_check(self, db_request):
             flash=pretend.call_recorder(lambda *a, **kw: None)
         )
 
+        spied_req = mocker.spy(db_request, "find_service")
+
         result = views.user_email_domain_check(user, db_request)
 
         assert isinstance(result, HTTPSeeOther)
@@ -1562,3 +1565,14 @@ def test_user_email_domain_check(self, db_request):
         ]
         assert user.primary_email.domain_last_checked is not None
         assert user.primary_email.domain_last_status == ["active"]
+
+        # Total calls
+        assert domain_status_service.get_domain_status.call_count == 1
+        # most recent return value
+        assert domain_status_service.get_domain_status.spy_return == ["active"]
+        # all return values
+        assert domain_status_service.get_domain_status.spy_return_list == [["active"]]
+        # most recent exception
+        assert domain_status_service.get_domain_status.spy_exception is None
+
+        spied_req.assert_called_once_with(IDomainStatusService)