diff --git a/scripts/seo-indexnow-submit.mjs b/scripts/seo-indexnow-submit.mjs
index 8ff20897c..8d755ed1c 100644
--- a/scripts/seo-indexnow-submit.mjs
+++ b/scripts/seo-indexnow-submit.mjs
@@ -3,36 +3,42 @@
  * Submit all worldmonitor.app URLs to IndexNow after deploy.
  * Run once after deploying the IndexNow key file:
  *   node scripts/seo-indexnow-submit.mjs
+ *
+ * IndexNow requires all URLs in one request to share the same host.
+ * Submits separate batches per subdomain.
  */
 
 const KEY = 'a7f3e9d1b2c44e8f9a0b1c2d3e4f5a6b';
-const HOST = 'www.worldmonitor.app';
-const KEY_LOCATION = `https://${HOST}/${KEY}.txt`;
 
-const URLS = [
-  'https://www.worldmonitor.app/',
-  'https://www.worldmonitor.app/pro',
-  'https://www.worldmonitor.app/blog/',
-  'https://tech.worldmonitor.app/',
-  'https://finance.worldmonitor.app/',
-  'https://happy.worldmonitor.app/',
-  'https://www.worldmonitor.app/blog/posts/what-is-worldmonitor-real-time-global-intelligence/',
-  'https://www.worldmonitor.app/blog/posts/five-dashboards-one-platform-worldmonitor-variants/',
-  'https://www.worldmonitor.app/blog/posts/track-global-conflicts-in-real-time/',
-  'https://www.worldmonitor.app/blog/posts/cyber-threat-intelligence-for-security-teams/',
-  'https://www.worldmonitor.app/blog/posts/osint-for-everyone-open-source-intelligence-democratized/',
-  'https://www.worldmonitor.app/blog/posts/natural-disaster-monitoring-earthquakes-fires-volcanoes/',
-  'https://www.worldmonitor.app/blog/posts/real-time-market-intelligence-for-traders-and-analysts/',
-  'https://www.worldmonitor.app/blog/posts/monitor-global-supply-chains-and-commodity-disruptions/',
-  'https://www.worldmonitor.app/blog/posts/satellite-imagery-orbital-surveillance/',
-  'https://www.worldmonitor.app/blog/posts/live-webcams-from-geopolitical-hotspots/',
-  'https://www.worldmonitor.app/blog/posts/prediction-markets-ai-forecasting-geopolitics/',
-  'https://www.worldmonitor.app/blog/posts/command-palette-search-everything-instantly/',
-  'https://www.worldmonitor.app/blog/posts/worldmonitor-in-21-languages-global-intelligence-for-everyone/',
-  'https://www.worldmonitor.app/blog/posts/ai-powered-intelligence-without-the-cloud/',
-  'https://www.worldmonitor.app/blog/posts/build-on-worldmonitor-developer-api-open-source/',
-  'https://www.worldmonitor.app/blog/posts/worldmonitor-vs-traditional-intelligence-tools/',
-  'https://www.worldmonitor.app/blog/posts/tracking-global-trade-routes-chokepoints-freight-costs/',
+const BATCHES = [
+  {
+    host: 'www.worldmonitor.app',
+    urls: [
+      'https://www.worldmonitor.app/',
+      'https://www.worldmonitor.app/pro',
+      'https://www.worldmonitor.app/blog/',
+      'https://www.worldmonitor.app/blog/posts/what-is-worldmonitor-real-time-global-intelligence/',
+      'https://www.worldmonitor.app/blog/posts/five-dashboards-one-platform-worldmonitor-variants/',
+      'https://www.worldmonitor.app/blog/posts/track-global-conflicts-in-real-time/',
+      'https://www.worldmonitor.app/blog/posts/cyber-threat-intelligence-for-security-teams/',
+      'https://www.worldmonitor.app/blog/posts/osint-for-everyone-open-source-intelligence-democratized/',
+      'https://www.worldmonitor.app/blog/posts/natural-disaster-monitoring-earthquakes-fires-volcanoes/',
+      'https://www.worldmonitor.app/blog/posts/real-time-market-intelligence-for-traders-and-analysts/',
+      'https://www.worldmonitor.app/blog/posts/monitor-global-supply-chains-and-commodity-disruptions/',
+      'https://www.worldmonitor.app/blog/posts/satellite-imagery-orbital-surveillance/',
+      'https://www.worldmonitor.app/blog/posts/live-webcams-from-geopolitical-hotspots/',
+      'https://www.worldmonitor.app/blog/posts/prediction-markets-ai-forecasting-geopolitics/',
+      'https://www.worldmonitor.app/blog/posts/command-palette-search-everything-instantly/',
+      'https://www.worldmonitor.app/blog/posts/worldmonitor-in-21-languages-global-intelligence-for-everyone/',
+      'https://www.worldmonitor.app/blog/posts/ai-powered-intelligence-without-the-cloud/',
+      'https://www.worldmonitor.app/blog/posts/build-on-worldmonitor-developer-api-open-source/',
+      'https://www.worldmonitor.app/blog/posts/worldmonitor-vs-traditional-intelligence-tools/',
+      'https://www.worldmonitor.app/blog/posts/tracking-global-trade-routes-chokepoints-freight-costs/',
+    ],
+  },
+  { host: 'tech.worldmonitor.app', urls: ['https://tech.worldmonitor.app/'] },
+  { host: 'finance.worldmonitor.app', urls: ['https://finance.worldmonitor.app/'] },
+  { host: 'happy.worldmonitor.app', urls: ['https://happy.worldmonitor.app/'] },
 ];
 
 const ENDPOINTS = [
@@ -43,20 +49,24 @@ const ENDPOINTS = [
   'https://yandex.com/indexnow',
 ];
 
-async function submitBatch(endpoint) {
+async function submit(endpoint, host, urlList) {
+  const keyLocation = `https://${host}/${KEY}.txt`;
   const res = await fetch(endpoint, {
     method: 'POST',
     headers: { 'Content-Type': 'application/json; charset=utf-8' },
-    body: JSON.stringify({ host: HOST, key: KEY, keyLocation: KEY_LOCATION, urlList: URLS }),
+    body: JSON.stringify({ host, key: KEY, keyLocation, urlList }),
   });
-  return { endpoint, status: res.status, ok: res.ok };
+  return { endpoint, host, status: res.status, ok: res.ok };
 }
 
-const results = await Promise.allSettled(ENDPOINTS.map(submitBatch));
-for (const r of results) {
-  if (r.status === 'fulfilled') {
-    console.log(`${r.value.ok ? '✓' : '✗'} ${r.value.endpoint} → ${r.value.status}`);
-  } else {
-    console.log(`✗ error: ${r.reason}`);
+for (const { host, urls } of BATCHES) {
+  console.log(`\n[${host}] (${urls.length} URLs)`);
+  const results = await Promise.allSettled(ENDPOINTS.map(ep => submit(ep, host, urls)));
+  for (const r of results) {
+    if (r.status === 'fulfilled') {
+      console.log(`  ${r.value.ok ? '✓' : '✗'} ${r.value.endpoint.replace('https://', '')} → ${r.value.status}`);
+    } else {
+      console.log(`  ✗ error: ${r.reason}`);
+    }
   }
 }