diff --git a/client/src/app.tsx b/client/src/app.tsx
index 88c702a3de60..ee6eca2f61a4 100644
--- a/client/src/app.tsx
+++ b/client/src/app.tsx
@@ -25,6 +25,7 @@ import { useGleanPage } from "./telemetry/glean-context";
 import { MainContentContainer } from "./ui/atoms/page-content";
 import { Loading } from "./ui/atoms/loading";
 import { Advertising } from "./advertising";
+import { HydrationData } from "../../libs/types/hydration";
 
 const AllFlaws = React.lazy(() => import("./flaws"));
 const Translations = React.lazy(() => import("./translations"));
@@ -108,9 +109,18 @@ function PageOrPageNotFound({ pageNotFound, children }) {
   );
 }
 
-export function App(appProps) {
+export function App(appProps: HydrationData) {
+  const { pathname } = useLocation();
+  const initialPathname = React.useRef(pathname);
+  const pageNotFound = React.useMemo(
+    () =>
+      (appProps.pageNotFound || false) && initialPathname.current === pathname,
+    [appProps.pageNotFound, pathname]
+  );
+
   usePing();
-  useGleanPage();
+  useGleanPage(pageNotFound);
+
   const localeMatch = useMatch("/:locale/*");
 
   useEffect(() => {
@@ -119,18 +129,6 @@ export function App(appProps) {
     document.documentElement.setAttribute("lang", locale);
   }, [appProps.locale, localeMatch]);
 
-  const [pageNotFound, setPageNotFound] = React.useState<boolean>(
-    appProps.pageNotFound
-  );
-  const { pathname } = useLocation();
-  const initialPathname = React.useRef(pathname);
-
-  React.useEffect(() => {
-    setPageNotFound(
-      appProps.pageNotFound && initialPathname.current === pathname
-    );
-  }, [appProps.pageNotFound, pathname]);
-
   const isServer = useIsServer();
 
   // When preparing a build for use in the NPM package, CRUD_MODE is always true.
diff --git a/client/src/contributor-spotlight/index.tsx b/client/src/contributor-spotlight/index.tsx
index e42e9b7e3c55..f264c03606c6 100644
--- a/client/src/contributor-spotlight/index.tsx
+++ b/client/src/contributor-spotlight/index.tsx
@@ -3,7 +3,7 @@ import { useParams } from "react-router-dom";
 import useSWR from "swr";
 
 import { CRUD_MODE } from "../env";
-import { HydrationData } from "../types/hydration";
+import { HydrationData } from "../../../libs/types/hydration";
 import { GetInvolved } from "../ui/molecules/get_involved";
 import { Quote } from "../ui/molecules/quote";
 
diff --git a/client/src/homepage/contributor-spotlight/index.tsx b/client/src/homepage/contributor-spotlight/index.tsx
index 06869d1fd3ec..84aa2fc12100 100644
--- a/client/src/homepage/contributor-spotlight/index.tsx
+++ b/client/src/homepage/contributor-spotlight/index.tsx
@@ -1,6 +1,6 @@
 import useSWR from "swr";
 import { CRUD_MODE } from "../../env";
-import { HydrationData } from "../../types/hydration";
+import { HydrationData } from "../../../../libs/types/hydration";
 import { Icon } from "../../ui/atoms/icon";
 import Mandala from "../../ui/molecules/mandala";
 
diff --git a/client/src/homepage/featured-articles/index.tsx b/client/src/homepage/featured-articles/index.tsx
index 296a2410262e..19c785f6a2f2 100644
--- a/client/src/homepage/featured-articles/index.tsx
+++ b/client/src/homepage/featured-articles/index.tsx
@@ -1,6 +1,6 @@
 import useSWR from "swr";
 import { CRUD_MODE } from "../../env";
-import { HydrationData } from "../../types/hydration";
+import { HydrationData } from "../../../../libs/types/hydration";
 
 import "./index.scss";
 
diff --git a/client/src/homepage/latest-news/index.tsx b/client/src/homepage/latest-news/index.tsx
index 1b17a45b8e12..8d2affa34e9d 100644
--- a/client/src/homepage/latest-news/index.tsx
+++ b/client/src/homepage/latest-news/index.tsx
@@ -2,7 +2,7 @@ import dayjs from "dayjs";
 import relativeTime from "dayjs/plugin/relativeTime";
 import useSWR from "swr";
 import { CRUD_MODE } from "../../env";
-import { HydrationData } from "../../types/hydration";
+import { HydrationData } from "../../../../libs/types/hydration";
 import { NewsItem } from "../../../../libs/types/document";
 
 import "./index.scss";
diff --git a/client/src/homepage/recent-contributions/index.tsx b/client/src/homepage/recent-contributions/index.tsx
index f233f493beea..f4b91f31d79a 100644
--- a/client/src/homepage/recent-contributions/index.tsx
+++ b/client/src/homepage/recent-contributions/index.tsx
@@ -2,7 +2,7 @@ import dayjs from "dayjs";
 import relativeTime from "dayjs/plugin/relativeTime";
 import useSWR from "swr";
 import { CRUD_MODE } from "../../env";
-import { HydrationData } from "../../types/hydration";
+import { HydrationData } from "../../../../libs/types/hydration";
 
 import "./index.scss";
 
diff --git a/client/src/telemetry/generated/page.ts b/client/src/telemetry/generated/page.ts
index 796171479b37..63ab4eb20b04 100644
--- a/client/src/telemetry/generated/page.ts
+++ b/client/src/telemetry/generated/page.ts
@@ -5,6 +5,7 @@
 // AUTOGENERATED BY glean_parser v6.2.1. DO NOT EDIT. DO NOT COMMIT.
 
 import UrlMetricType from "@mozilla/glean/private/metrics/url";
+import StringMetricType from "@mozilla/glean/private/metrics/string";
 
 /**
  * The URL path of the page that was viewed.
@@ -31,3 +32,16 @@ export const referrer = new UrlMetricType({
   lifetime: "application",
   disabled: false,
 });
+
+/**
+ * The http status of the page.
+ *
+ * Generated from `page.http_status`.
+ */
+export const httpStatus = new StringMetricType({
+  category: "page",
+  name: "http_status",
+  sendInPings: ["action", "page"],
+  lifetime: "application",
+  disabled: false,
+});
diff --git a/client/src/telemetry/glean-context.tsx b/client/src/telemetry/glean-context.tsx
index 95d087e7e44a..1973e81955ea 100644
--- a/client/src/telemetry/glean-context.tsx
+++ b/client/src/telemetry/glean-context.tsx
@@ -12,10 +12,12 @@ import { handleSidebarClick } from "./sidebar-click";
 import { VIEWPORT_BREAKPOINTS } from "./constants";
 
 export type ViewportBreakpoint = "xs" | "sm" | "md" | "lg" | "xl" | "xxl";
+export type HTTPStatus = "200" | "404";
 
 export type PageProps = {
   referrer: string | undefined;
   path: string | undefined;
+  httpStatus: HTTPStatus;
   subscriptionType: string;
   geo: string | undefined;
   userAgent: string | undefined;
@@ -77,6 +79,7 @@ function glean(): GleanAnalytics {
       if (page.referrer) {
         pageMetric.referrer.set(page.referrer);
       }
+      pageMetric.httpStatus.set(page.httpStatus);
       if (page.geo) {
         navigatorMetric.geo.set(page.geo);
       }
@@ -147,7 +150,7 @@ export function useGlean() {
   return React.useContext(GleanContext);
 }
 
-export function useGleanPage() {
+export function useGleanPage(pageNotFound: boolean) {
   const loc = useLocation();
   const userData = useUserData();
   const path = useRef<String | null>(null);
@@ -156,6 +159,8 @@ export function useGleanPage() {
     const submit = gleanAnalytics.page({
       path: window?.location.toString(),
       referrer: document?.referrer,
+      // on port 3000 this will always return "200":
+      httpStatus: pageNotFound ? "404" : "200",
       userAgent: navigator?.userAgent,
       geo: userData?.geo?.country,
       subscriptionType: userData?.subscriptionType || "anonymous",
@@ -171,7 +176,7 @@ export function useGleanPage() {
       path.current = loc.pathname;
       submit();
     }
-  }, [loc.pathname, userData]);
+  }, [loc.pathname, userData, pageNotFound]);
 }
 
 export function useGleanClick() {
diff --git a/client/src/telemetry/metrics.yaml b/client/src/telemetry/metrics.yaml
index 16943e70e849..eed683b78a1a 100644
--- a/client/src/telemetry/metrics.yaml
+++ b/client/src/telemetry/metrics.yaml
@@ -37,6 +37,23 @@ page:
     notification_emails:
       - mdn-team@mozilla.com
     expires: 2023-09-05
+  http_status:
+    type: string
+    description: |
+      The HTTP status code of the page.
+    lifetime: application
+    send_in_pings:
+      - page
+      - action
+    data_sensitivity:
+      - technical
+    bugs:
+      - https://mozilla-hub.atlassian.net/browse/MP-285
+    data_reviews:
+      - https://bugzilla.mozilla.org/show_bug.cgi?id=1822124
+    notification_emails:
+      - mdn-team@mozilla.com
+    expires: 2023-09-05
 
 navigator:
   geo:
diff --git a/client/src/types/hydration.ts b/client/src/types/hydration.ts
deleted file mode 100644
index fa61b66a3617..000000000000
--- a/client/src/types/hydration.ts
+++ /dev/null
@@ -1,5 +0,0 @@
-interface HydrationData<Type = any> {
-  hyData: Type;
-}
-
-export type { HydrationData };
diff --git a/libs/types/hydration.ts b/libs/types/hydration.ts
new file mode 100644
index 000000000000..497605880923
--- /dev/null
+++ b/libs/types/hydration.ts
@@ -0,0 +1,11 @@
+interface HydrationData<T = any> {
+  hyData?: T;
+  doc?: any;
+  pageNotFound?: boolean;
+  pageTitle?: any;
+  possibleLocales?: any;
+  locale?: any;
+  noIndexing?: any;
+}
+
+export type { HydrationData };
diff --git a/ssr/render.ts b/ssr/render.ts
index 4e7a37188e8e..9daa648dce08 100644
--- a/ssr/render.ts
+++ b/ssr/render.ts
@@ -3,6 +3,7 @@ import path from "node:path";
 import { fileURLToPath } from "node:url";
 
 import { renderToString } from "react-dom/server";
+import { HydrationData } from "../libs/types/hydration";
 
 import { DEFAULT_LOCALE } from "../libs/constants";
 import { ALWAYS_ALLOW_ROBOTS, BUILD_OUT_ROOT } from "../libs/env";
@@ -142,16 +143,6 @@ function* extractCSSURLs(css, filterFunction) {
   }
 }
 
-interface HydrationData {
-  doc?: any;
-  pageNotFound?: boolean;
-  hyData?: any;
-  pageTitle?: any;
-  possibleLocales?: any;
-  locale?: any;
-  noIndexing?: any;
-}
-
 export default function render(
   renderApp,
   {