diff --git a/tests/domains.test.js b/tests/domains.test.js
index 9df9598f4..fc7a94696 100644
--- a/tests/domains.test.js
+++ b/tests/domains.test.js
@@ -24,26 +24,32 @@ function getDomainData(subdomain) {
 t("Nested subdomains should not exist without a parent subdomain", (t) => {
     files.forEach((file) => {
         const subdomain = file.replace(/\.json$/, "");
-        const parentDomain = subdomain.split(".").reverse()[0];
+        const parts = subdomain.split(".");
 
-        if (parentDomain !== subdomain) {
+        for (let i = 1; i < parts.length; i++) {
+            const parent = parts.slice(i).join(".");
             t.true(
-                parentDomain && files.includes(`${parentDomain}.json`),
-                `${file}: Parent subdomain does not exist`
+                files.includes(`${parent}.json`),
+                `${file}: Parent subdomain "${parent}" does not exist`
             );
         }
     });
 });
 
-t("Nested subdomains should not exist if the parent subdomain has NS records", (t) => {
+t("Nested subdomains should not exist if any parent subdomain has NS records", (t) => {
     files.forEach((file) => {
         const subdomain = file.replace(/\.json$/, "");
-        const parentDomain = subdomain.split(".").reverse()[0];
+        const parts = subdomain.split(".");
 
-        if (parentDomain !== subdomain) {
-            const parentData = getDomainData(parentDomain);
+        for (let i = 1; i < parts.length; i++) {
+            const parent = parts.slice(i).join(".");
+            const parentData = getDomainData(parent);
 
-            t.true(!parentData.record.NS, `${file}: Parent subdomain has NS records`);
+            if (!parentData) continue;
+            if (parentData.record.NS) {
+                t.fail(`${file}: Parent subdomain "${parent}" has NS records`);
+                return;
+            }
         }
     });
 });