Add DNS map summary ℹ️

app/lookup/[domain]/map/page.tsx

@@ -1,5 +1,5 @@
 import { isbot } from 'isbot';
-import { ShieldAlertIcon } from 'lucide-react';
+import { CheckCircleIcon, InfoIcon, ShieldAlertIcon } from 'lucide-react';
 import { headers } from 'next/headers';
 import type { FC } from 'react';
 
@@ -57,7 +57,51 @@ const MapResultsPage: FC<MapResultsPageProps> = async ({
     })
   );
 
-  return <ResultsGlobe domain={domain} markers={markers} />;
+  let hasDifferentRecords = false;
+  for (let i = 1; i < markers.length; i++) {
+    const previous = markers[i - 1].results;
+    const current = markers[i].results;
+    if (
+      previous.A.toSorted().toString() !== current.A.toSorted().toString() ||
+      previous.AAAA.toSorted().toString() !==
+        current.AAAA.toSorted().toString() ||
+      previous.CNAME.toSorted().toString() !==
+        current.CNAME.toSorted().toString()
+    ) {
+      console.log(previous, current);
+      hasDifferentRecords = true;
+      break;
+    }
+  }
+
+  return (
+    <>
+      <Alert className="mx-auto mt-16 w-max">
+        {hasDifferentRecords ? (
+          <>
+            <InfoIcon className="h-4 w-4" />
+            <AlertTitle>Different records detected!</AlertTitle>
+            <AlertDescription>
+              Not all regions have the same records for this domain. This{' '}
+              <i>could</i> be an indication for the use of GeoDNS.
+              <br /> Keep in mind however, that some providers rotate their IP
+              addresses, which can also lead to different results.
+            </AlertDescription>
+          </>
+        ) : (
+          <>
+            <CheckCircleIcon className="h-4 w-4" />
+            <AlertTitle>All records are the same!</AlertTitle>
+            <AlertDescription>
+              All records are the same for all regions. Therefore propagation
+              was successful and the domain is not using GeoDNS.
+            </AlertDescription>
+          </>
+        )}
+      </Alert>
+      <ResultsGlobe domain={domain} markers={markers} />
+    </>
+  );
 };
 
 export default MapResultsPage;