diff --git a/tracker-radar-tests/TR-domain-matching/domain_matching_tests.json b/tracker-radar-tests/TR-domain-matching/domain_matching_tests.json
index 6186e11..2c25056 100644
--- a/tracker-radar-tests/TR-domain-matching/domain_matching_tests.json
+++ b/tracker-radar-tests/TR-domain-matching/domain_matching_tests.json
@@ -975,6 +975,26 @@
                 "requestURL": "https://sub1asub2.format.test/test6.js",
                 "requestType": "script",
                 "expectAction": "ignore"
+            },
+            {
+                "name": "private eTLD+1 tracker - default block match",
+                "siteURL": "https://example.com",
+                "requestURL": "https://privateetld.appspot.com/script.js",
+                "requestType": "script",
+                "expectAction": "block"
+            },
+            {
+                "name": "private eTLD+1 other domain - no match",
+                "siteURL": "https://example.com",
+                "requestURL": "https://other.appspot.com/script.js",
+                "requestType": "script"
+            },
+            {
+                "name": "private eTLD tracker - default block match",
+                "siteURL": "https://example.com",
+                "requestURL": "https://track.withgoogle.com/script.js",
+                "requestType": "script",
+                "expectAction": "block"
             }
         ]
     },
diff --git a/tracker-radar-tests/TR-domain-matching/tracker_radar_reference.json b/tracker-radar-tests/TR-domain-matching/tracker_radar_reference.json
index 9a831c9..536748b 100644
--- a/tracker-radar-tests/TR-domain-matching/tracker_radar_reference.json
+++ b/tracker-radar-tests/TR-domain-matching/tracker_radar_reference.json
@@ -798,6 +798,24 @@
                     "action": "ignore"
                 }
             ]
+        },
+        "privateetld.appspot.com": {
+            "domain": "privateetld.appspot.com",
+            "owner": {},
+            "prevalence": 0.1,
+            "fingerprinting": 2,
+            "cookies": 0.1,
+            "categories": [],
+            "default": "block"
+        },
+        "withgoogle.com": {
+            "domain": "withgoogle.com",
+            "owner": {},
+            "prevalence": 0.1,
+            "fingerprinting": 2,
+            "cookies": 0.1,
+            "categories": [],
+            "default": "block"
         }
     },
     "entities": {