diff --git a/aio/src/polyfills.ts b/aio/src/polyfills.ts
index a882913b83..5508a41d96 100644
--- a/aio/src/polyfills.ts
+++ b/aio/src/polyfills.ts
@@ -18,7 +18,7 @@
  * BROWSER POLYFILLS
  */
 
-/** IE10 and IE11 requires the following for NgClass support on SVG elements */
+/** IE11 requires the following for NgClass support on SVG elements */
 // import 'classlist.js';  // Run `npm install --save classlist.js`.
 
 /**
diff --git a/aio/src/testing/dom-utils.ts b/aio/src/testing/dom-utils.ts
index 54510abece..8e296fe352 100644
--- a/aio/src/testing/dom-utils.ts
+++ b/aio/src/testing/dom-utils.ts
@@ -5,7 +5,7 @@ export function createCustomEvent(doc: Document, name: string, detail: any): Cus
   const bubbles = false;
   const cancelable = false;
 
-  // On IE9-11, `CustomEvent` is not a constructor.
+  // On IE11, `CustomEvent` is not a constructor.
   if (typeof CustomEvent !== 'function') {
     const event = doc.createEvent('CustomEvent');
     event.initCustomEvent(name, bubbles, cancelable, detail);
diff --git a/aio/tools/examples/shared/boilerplate/cli/src/polyfills.ts b/aio/tools/examples/shared/boilerplate/cli/src/polyfills.ts
index cd7cfe977d..f38ef7d0e5 100644
--- a/aio/tools/examples/shared/boilerplate/cli/src/polyfills.ts
+++ b/aio/tools/examples/shared/boilerplate/cli/src/polyfills.ts
@@ -18,7 +18,7 @@
  * BROWSER POLYFILLS
  */
 
-/** IE10 and IE11 requires the following for NgClass support on SVG elements */
+/** IE11 requires the following for NgClass support on SVG elements */
 // import 'classlist.js';  // Run `npm install --save classlist.js`.
 
 /**
diff --git a/aio/tools/examples/shared/boilerplate/elements/src/polyfills.ts b/aio/tools/examples/shared/boilerplate/elements/src/polyfills.ts
index 031fc3d0c0..08b4d9cd60 100644
--- a/aio/tools/examples/shared/boilerplate/elements/src/polyfills.ts
+++ b/aio/tools/examples/shared/boilerplate/elements/src/polyfills.ts
@@ -18,7 +18,7 @@
  * BROWSER POLYFILLS
  */
 
-/** IE10 and IE11 requires the following for NgClass support on SVG elements */
+/** IE11 requires the following for NgClass support on SVG elements */
 // import 'classlist.js';  // Run `npm install --save classlist.js`.
 
 /**
diff --git a/aio/tools/examples/shared/boilerplate/i18n/src/polyfills.ts b/aio/tools/examples/shared/boilerplate/i18n/src/polyfills.ts
index d06dbf69c5..3424b9d3f4 100644
--- a/aio/tools/examples/shared/boilerplate/i18n/src/polyfills.ts
+++ b/aio/tools/examples/shared/boilerplate/i18n/src/polyfills.ts
@@ -22,7 +22,7 @@ import '@angular/localize/init';
  * BROWSER POLYFILLS
  */
 
-/** IE10 and IE11 requires the following for NgClass support on SVG elements */
+/** IE11 requires the following for NgClass support on SVG elements */
 // import 'classlist.js';  // Run `npm install --save classlist.js`.
 
 /**
diff --git a/integration/cli-hello-world-ivy-compat/src/polyfills.ts b/integration/cli-hello-world-ivy-compat/src/polyfills.ts
index aa665d6b87..f39dafba9c 100644
--- a/integration/cli-hello-world-ivy-compat/src/polyfills.ts
+++ b/integration/cli-hello-world-ivy-compat/src/polyfills.ts
@@ -18,7 +18,7 @@
  * BROWSER POLYFILLS
  */
 
-/** IE10 and IE11 requires the following for NgClass support on SVG elements */
+/** IE11 requires the following for NgClass support on SVG elements */
 // import 'classlist.js';  // Run `npm install --save classlist.js`.
 
 /**
diff --git a/integration/cli-hello-world-ivy-i18n/src/polyfills.ts b/integration/cli-hello-world-ivy-i18n/src/polyfills.ts
index dcfb640835..ac4cd2caed 100644
--- a/integration/cli-hello-world-ivy-i18n/src/polyfills.ts
+++ b/integration/cli-hello-world-ivy-i18n/src/polyfills.ts
@@ -18,7 +18,7 @@
  * BROWSER POLYFILLS
  */
 
-/** IE10 and IE11 requires the following for NgClass support on SVG elements */
+/** IE11 requires the following for NgClass support on SVG elements */
 // import 'classlist.js';  // Run `npm install --save classlist.js`.
 
 /**
diff --git a/integration/cli-hello-world-ivy-minimal/src/polyfills.ts b/integration/cli-hello-world-ivy-minimal/src/polyfills.ts
index aa665d6b87..f39dafba9c 100644
--- a/integration/cli-hello-world-ivy-minimal/src/polyfills.ts
+++ b/integration/cli-hello-world-ivy-minimal/src/polyfills.ts
@@ -18,7 +18,7 @@
  * BROWSER POLYFILLS
  */
 
-/** IE10 and IE11 requires the following for NgClass support on SVG elements */
+/** IE11 requires the following for NgClass support on SVG elements */
 // import 'classlist.js';  // Run `npm install --save classlist.js`.
 
 /**
diff --git a/integration/cli-hello-world-lazy-rollup/src/polyfills.ts b/integration/cli-hello-world-lazy-rollup/src/polyfills.ts
index aa665d6b87..f39dafba9c 100644
--- a/integration/cli-hello-world-lazy-rollup/src/polyfills.ts
+++ b/integration/cli-hello-world-lazy-rollup/src/polyfills.ts
@@ -18,7 +18,7 @@
  * BROWSER POLYFILLS
  */
 
-/** IE10 and IE11 requires the following for NgClass support on SVG elements */
+/** IE11 requires the following for NgClass support on SVG elements */
 // import 'classlist.js';  // Run `npm install --save classlist.js`.
 
 /**
diff --git a/integration/cli-hello-world-lazy/src/polyfills.ts b/integration/cli-hello-world-lazy/src/polyfills.ts
index aa665d6b87..f39dafba9c 100644
--- a/integration/cli-hello-world-lazy/src/polyfills.ts
+++ b/integration/cli-hello-world-lazy/src/polyfills.ts
@@ -18,7 +18,7 @@
  * BROWSER POLYFILLS
  */
 
-/** IE10 and IE11 requires the following for NgClass support on SVG elements */
+/** IE11 requires the following for NgClass support on SVG elements */
 // import 'classlist.js';  // Run `npm install --save classlist.js`.
 
 /**
diff --git a/integration/cli-hello-world/src/polyfills.ts b/integration/cli-hello-world/src/polyfills.ts
index aa665d6b87..f39dafba9c 100644
--- a/integration/cli-hello-world/src/polyfills.ts
+++ b/integration/cli-hello-world/src/polyfills.ts
@@ -18,7 +18,7 @@
  * BROWSER POLYFILLS
  */
 
-/** IE10 and IE11 requires the following for NgClass support on SVG elements */
+/** IE11 requires the following for NgClass support on SVG elements */
 // import 'classlist.js';  // Run `npm install --save classlist.js`.
 
 /**
diff --git a/integration/ivy-i18n/src/polyfills-runtime.ts b/integration/ivy-i18n/src/polyfills-runtime.ts
index 30b721ff77..63ba0f8456 100644
--- a/integration/ivy-i18n/src/polyfills-runtime.ts
+++ b/integration/ivy-i18n/src/polyfills-runtime.ts
@@ -18,7 +18,7 @@
  * BROWSER POLYFILLS
  */
 
-/** IE10 and IE11 requires the following for NgClass support on SVG elements */
+/** IE11 requires the following for NgClass support on SVG elements */
 // import 'classlist.js';  // Run `npm install --save classlist.js`.
 
 /**
diff --git a/integration/ivy-i18n/src/polyfills.ts b/integration/ivy-i18n/src/polyfills.ts
index dcfb640835..ac4cd2caed 100644
--- a/integration/ivy-i18n/src/polyfills.ts
+++ b/integration/ivy-i18n/src/polyfills.ts
@@ -18,7 +18,7 @@
  * BROWSER POLYFILLS
  */
 
-/** IE10 and IE11 requires the following for NgClass support on SVG elements */
+/** IE11 requires the following for NgClass support on SVG elements */
 // import 'classlist.js';  // Run `npm install --save classlist.js`.
 
 /**
diff --git a/integration/ng_update_migrations/src/polyfills.ts b/integration/ng_update_migrations/src/polyfills.ts
index aa665d6b87..f39dafba9c 100644
--- a/integration/ng_update_migrations/src/polyfills.ts
+++ b/integration/ng_update_migrations/src/polyfills.ts
@@ -18,7 +18,7 @@
  * BROWSER POLYFILLS
  */
 
-/** IE10 and IE11 requires the following for NgClass support on SVG elements */
+/** IE11 requires the following for NgClass support on SVG elements */
 // import 'classlist.js';  // Run `npm install --save classlist.js`.
 
 /**
diff --git a/packages/animations/browser/test/render/css_keyframes/css_keyframes_driver_spec.ts b/packages/animations/browser/test/render/css_keyframes/css_keyframes_driver_spec.ts
index 95c2a61a40..c062712e8d 100644
--- a/packages/animations/browser/test/render/css_keyframes/css_keyframes_driver_spec.ts
+++ b/packages/animations/browser/test/render/css_keyframes/css_keyframes_driver_spec.ts
@@ -106,7 +106,7 @@ describe('CssKeyframesDriver tests', () => {
 
     it('should animate until the `animationend` method is emitted, but stil retain the <style> method and the element animation details',
        fakeAsync(() => {
-         // IE10 and IE11 cannot create an instanceof AnimationEvent
+         // IE11 cannot create an instanceof AnimationEvent
          if (!supportsAnimationEventCreation()) return;
 
          const elm = createElement();
diff --git a/packages/animations/browser/test/render/css_keyframes/element_animation_style_handler_spec.ts b/packages/animations/browser/test/render/css_keyframes/element_animation_style_handler_spec.ts
index f0a8caed09..0d2420e9fd 100644
--- a/packages/animations/browser/test/render/css_keyframes/element_animation_style_handler_spec.ts
+++ b/packages/animations/browser/test/render/css_keyframes/element_animation_style_handler_spec.ts
@@ -195,7 +195,7 @@ const EMPTY_FN = () => {};
     });
 
     it('should fire the onDone method when the matching animationend event is emitted', () => {
-      // IE10 and IE11 cannot create an instanceof AnimationEvent
+      // IE11 cannot create an instanceof AnimationEvent
       if (!supportsAnimationEventCreation()) return;
 
       const element = createElement();
diff --git a/packages/common/src/i18n/format_date.ts b/packages/common/src/i18n/format_date.ts
index 5d4c704510..4c5d653d51 100644
--- a/packages/common/src/i18n/format_date.ts
+++ b/packages/common/src/i18n/format_date.ts
@@ -667,7 +667,7 @@ function getDateFormatter(format: string): DateFormatter|null {
 }
 
 function timezoneToOffset(timezone: string, fallback: number): number {
-  // Support: IE 9-11 only, Edge 13-15+
+  // Support: IE 11 only, Edge 13-15+
   // IE/Edge do not "understand" colon (`:`) in timezone
   timezone = timezone.replace(/:/g, '');
   const requestedTimezoneOffset = Date.parse('Jan 01, 1970 00:00:00 ' + timezone) / 60000;
diff --git a/packages/common/upgrade/src/location_shim.ts b/packages/common/upgrade/src/location_shim.ts
index 781b1205d2..7c3c010365 100644
--- a/packages/common/upgrade/src/location_shim.ts
+++ b/packages/common/upgrade/src/location_shim.ts
@@ -689,7 +689,7 @@ export class $locationShim {
    *
    * This method is supported only in HTML5 mode and only in browsers supporting
    * the HTML5 History API methods such as `pushState` and `replaceState`. If you need to support
-   * older browsers (like IE9 or Android < 4.0), don't use this method.
+   * older browsers (like Android < 4.0), don't use this method.
    *
    */
   state(): unknown;
diff --git a/packages/core/src/sanitization/inert_body.ts b/packages/core/src/sanitization/inert_body.ts
index d4aed03163..c460c5dc65 100644
--- a/packages/core/src/sanitization/inert_body.ts
+++ b/packages/core/src/sanitization/inert_body.ts
@@ -88,7 +88,7 @@ class InertDocumentHelper implements InertBodyHelper {
     const inertBody = this.inertDocument.createElement('body');
     inertBody.innerHTML = trustedHTMLFromString(html) as string;
 
-    // Support: IE 9-11 only
+    // Support: IE 11 only
     // strip custom-namespaced attributes on IE<=11
     if ((this.defaultDoc as any).documentMode) {
       this.stripCustomNsAttrs(inertBody);
@@ -98,7 +98,7 @@ class InertDocumentHelper implements InertBodyHelper {
   }
 
   /**
-   * When IE9-11 comes across an unknown namespaced attribute e.g. 'xlink:foo' it adds 'xmlns:ns1'
+   * When IE11 comes across an unknown namespaced attribute e.g. 'xlink:foo' it adds 'xmlns:ns1'
    * attribute to declare ns1 namespace and prefixes the attribute with 'ns1' (e.g.
    * 'ns1:xlink:foo').
    *
diff --git a/packages/elements/src/utils.ts b/packages/elements/src/utils.ts
index 9bddaa70dc..c058d1ad10 100644
--- a/packages/elements/src/utils.ts
+++ b/packages/elements/src/utils.ts
@@ -59,7 +59,7 @@ export function createCustomEvent(doc: Document, name: string, detail: any): Cus
   const bubbles = false;
   const cancelable = false;
 
-  // On IE9-11, `CustomEvent` is not a constructor.
+  // On IE11, `CustomEvent` is not a constructor.
   if (typeof CustomEvent !== 'function') {
     const event = doc.createEvent('CustomEvent');
     event.initCustomEvent(name, bubbles, cancelable, detail);
diff --git a/packages/platform-browser/src/browser/tools/common_tools.ts b/packages/platform-browser/src/browser/tools/common_tools.ts
index 46d8eb842e..3136bcbfde 100644
--- a/packages/platform-browser/src/browser/tools/common_tools.ts
+++ b/packages/platform-browser/src/browser/tools/common_tools.ts
@@ -45,7 +45,7 @@ export class AngularProfiler {
   timeChangeDetection(config: any): ChangeDetectionPerfRecord {
     const record = config && config['record'];
     const profileName = 'Change Detection';
-    // Profiler is not available in Android browsers, nor in IE 9 without dev tools opened
+    // Profiler is not available in Android browsers without dev tools opened
     const isProfilerAvailable = window.console.profile != null;
     if (record && isProfilerAvailable) {
       window.console.profile(profileName);
diff --git a/packages/router/test/bootstrap.spec.ts b/packages/router/test/bootstrap.spec.ts
index 12c768e784..6f8a5a87c4 100644
--- a/packages/router/test/bootstrap.spec.ts
+++ b/packages/router/test/bootstrap.spec.ts
@@ -301,7 +301,7 @@ describe('bootstrap', () => {
     await router.navigateByUrl('/aa');
     window.scrollTo(0, 5000);
 
-    // IE 9/10/11 use non-standard pageYOffset instead of scrollY
+    // IE 11 uses non-standard pageYOffset instead of scrollY
     const getScrollY = () => window.scrollY !== undefined ? window.scrollY : window.pageYOffset;
 
     await router.navigateByUrl('/fail');
diff --git a/packages/upgrade/src/dynamic/test/upgrade_spec.ts b/packages/upgrade/src/dynamic/test/upgrade_spec.ts
index aee46319fc..9ab7ba7ff8 100644
--- a/packages/upgrade/src/dynamic/test/upgrade_spec.ts
+++ b/packages/upgrade/src/dynamic/test/upgrade_spec.ts
@@ -2120,7 +2120,7 @@ withEachNg1Version(() => {
                }
              }
 
-             // On browsers that don't support `requestAnimationFrame` (IE 9, Android <= 4.3),
+             // On browsers that don't support `requestAnimationFrame` (Android <= 4.3),
              // `$animate` will use `setTimeout(..., 16.6)` instead. This timeout will still be
              // on
              // the queue at the end of the test, causing it to fail.
@@ -2217,7 +2217,7 @@ withEachNg1Version(() => {
                }
              }
 
-             // On browsers that don't support `requestAnimationFrame` (IE 9, Android <= 4.3),
+             // On browsers that don't support `requestAnimationFrame` (Android <= 4.3),
              // `$animate` will use `setTimeout(..., 16.6)` instead. This timeout will still be
              // on
              // the queue at the end of the test, causing it to fail.
@@ -2294,7 +2294,7 @@ withEachNg1Version(() => {
                }
              }
 
-             // On browsers that don't support `requestAnimationFrame` (IE 9, Android <= 4.3),
+             // On browsers that don't support `requestAnimationFrame` (Android <= 4.3),
              // `$animate` will use `setTimeout(..., 16.6)` instead. This timeout will still be
              // on
              // the queue at the end of the test, causing it to fail.
@@ -2342,10 +2342,9 @@ withEachNg1Version(() => {
                }
              }
 
-             // On browsers that don't support `requestAnimationFrame` (IE 9, Android <= 4.3),
+             // On browsers that don't support `requestAnimationFrame` (Android <= 4.3),
              // `$animate` will use `setTimeout(..., 16.6)` instead. This timeout will still be
-             // on
-             // the queue at the end of the test, causing it to fail.
+             // on the queue at the end of the test, causing it to fail.
              // Mocking animations (via `ngAnimateMock`) avoids the issue.
              angular.module_('ng1', ['ngAnimateMock'])
                  .component('ng1', {