diff --git a/src/utils.js b/src/utils.js
index 0071d319f7b..b3ffbfc9896 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -159,47 +159,56 @@ export function parseGPTSingleSizeArray(singleSize) {
   }
 };
 
-export function getTopWindowLocation() {
+exports.getTopWindowLocation = function() {
   if (exports.inIframe()) {
-    return getIframeParentLoc();
-  } else {
-    return window.location;
+    let loc;
+    try {
+      loc = exports.getAncestorOrigins() || exports.getTopFrameReferrer();
+    } catch (e) {
+      logInfo('could not obtain top window location', e);
+    }
+    if (loc) return parse(loc);
   }
+  return exports.getWindowLocation();
 }
 
-const getIframeParentLoc = function() {
-  let loc = window.location;
+exports.getTopFrameReferrer = function () {
   try {
-    if (window.$sf) {
-      loc = window.document.referrer;
-    } else {
-      if (window.document.location && window.document.location.ancestorOrigins &&
-        window.document.location.ancestorOrigins.length >= 1) {
-        loc = window.document.location.ancestorOrigins[window.document.location.ancestorOrigins.length - 1];
-      } else if (window.document.location) {
-        // force an exception in x-domain environments. #1509
-        window.top.location.toString();
-        loc = getNonWebKitIframeParentLoc();
+    // force an exception in x-domain environments. #1509
+    window.top.location.toString();
+    let referrerLoc = '';
+    let currentWindow;
+    do {
+      currentWindow = currentWindow ? currentWindow.parent : window;
+      if (currentWindow.document && currentWindow.document.referrer) {
+        referrerLoc = currentWindow.document.referrer;
       }
     }
-    loc = parse(loc);
+    while (currentWindow !== window.top);
+    return referrerLoc;
   } catch (e) {
-    this.logMessage('getTopParentLoc failure', e);
+    return window.document.referrer;
   }
-  return loc;
 };
 
-const getNonWebKitIframeParentLoc = function() {
-  let referrerLoc = '';
-  let currentWindow;
-  do {
-    currentWindow = currentWindow ? currentWindow.parent : window;
-    if (currentWindow.document && currentWindow.document.referrer) {
-      referrerLoc = currentWindow.document.referrer;
-    }
+exports.getAncestorOrigins = function () {
+  if (window.document.location && window.document.location.ancestorOrigins &&
+    window.document.location.ancestorOrigins.length >= 1) {
+    return window.document.location.ancestorOrigins[window.document.location.ancestorOrigins.length
+    - 1];
   }
-  while (currentWindow !== window.top);
-  return referrerLoc;
+};
+
+exports.getWindowTop = function () {
+  return window.top;
+};
+
+exports.getWindowSelf = function () {
+  return window.self;
+};
+
+exports.getWindowLocation = function () {
+  return window.location;
 };
 
 exports.getTopWindowUrl = function () {
@@ -684,7 +693,7 @@ export function deepClone(obj) {
 
 export function inIframe() {
   try {
-    return window.self !== window.top;
+    return exports.getWindowSelf() !== exports.getWindowTop();
   } catch (e) {
     return true;
   }
diff --git a/test/spec/utils_spec.js b/test/spec/utils_spec.js
index f02b4881be3..37f8d90168b 100755
--- a/test/spec/utils_spec.js
+++ b/test/spec/utils_spec.js
@@ -1,8 +1,7 @@
-import { getSlotTargeting, getAdServerTargeting } from 'test/fixtures/fixtures';
-import { cookiesAreEnabled } from '../../src/utils';
+import { getAdServerTargeting } from 'test/fixtures/fixtures';
 
 var assert = require('assert');
-var utils = require('../../src/utils');
+var utils = require('src/utils');
 
 describe('Utils', function () {
   var obj_string = 's',
@@ -623,4 +622,88 @@ describe('Utils', function () {
       expect(adUnitCopy[0].renderer.render).to.be.a('function');
     });
   });
+  describe('getTopWindowLocation', () => {
+    let sandbox;
+
+    beforeEach(() => {
+     sandbox = sinon.sandbox.create();
+    });
+
+    afterEach(() => {
+     sandbox.restore();
+    });
+
+    it('returns window.location if not in iFrame', () => {
+      sandbox.stub(utils, 'getWindowLocation').returns({
+        href: 'https://www.google.com/',
+        ancestorOrigins: {},
+        origin: 'https://www.google.com',
+        protocol: 'https',
+        host: 'www.google.com',
+        hostname: 'www.google.com',
+        port: '',
+        pathname: '/',
+        search: '',
+        hash: ''
+      });
+      let windowSelfAndTopObject = { self: 'is same as top' };
+      sandbox.stub(utils, 'getWindowSelf').returns(
+        windowSelfAndTopObject
+      );
+      sandbox.stub(utils, 'getWindowTop').returns(
+        windowSelfAndTopObject
+      );
+      var topWindowLocation = utils.getTopWindowLocation();
+      expect(topWindowLocation).to.be.a('object');
+      expect(topWindowLocation.href).to.equal('https://www.google.com/');
+      expect(topWindowLocation.protocol).to.equal('https');
+      expect(topWindowLocation.hostname).to.equal('www.google.com');
+      expect(topWindowLocation.port).to.equal('');
+      expect(topWindowLocation.pathname).to.equal('/');
+      expect(topWindowLocation.hash).to.equal('');
+      expect(topWindowLocation.search).to.equal('');
+      expect(topWindowLocation.host).to.equal('www.google.com');
+    });
+
+    it('returns parsed dom string from ancestorOrigins if in iFrame & ancestorOrigins is populated', () => {
+      sandbox.stub(utils, 'getWindowSelf').returns(
+        { self: 'is not same as top' }
+      );
+      sandbox.stub(utils, 'getWindowTop').returns(
+        { top: 'is not same as self' }
+      );
+      sandbox.stub(utils, 'getAncestorOrigins').returns('https://www.google.com/a/umich.edu/acs');
+      var topWindowLocation = utils.getTopWindowLocation();
+      expect(topWindowLocation).to.be.a('object');
+      expect(topWindowLocation.pathname).to.equal('/a/umich.edu/acs');
+      expect(topWindowLocation.href).to.equal('https://www.google.com/a/umich.edu/acs');
+      expect(topWindowLocation.protocol).to.equal('https');
+      expect(topWindowLocation.hostname).to.equal('www.google.com');
+      expect(topWindowLocation.port).to.equal(0);
+      expect(topWindowLocation.hash).to.equal('');
+      assert.deepEqual(topWindowLocation.search, {});
+      expect(topWindowLocation.host).to.equal('www.google.com');
+    });
+
+    it('returns parsed referrer string if in iFrame but no ancestorOrigins', () => {
+      sandbox.stub(utils, 'getWindowSelf').returns(
+        { self: 'is not same as top' }
+      );
+      sandbox.stub(utils, 'getWindowTop').returns(
+        { top: 'is not same as self' }
+      );
+      sandbox.stub(utils, 'getAncestorOrigins').returns(null);
+      sandbox.stub(utils, 'getTopFrameReferrer').returns('https://www.example.com/');
+      var topWindowLocation = utils.getTopWindowLocation();
+      expect(topWindowLocation).to.be.a('object');
+      expect(topWindowLocation.href).to.equal('https://www.example.com/');
+      expect(topWindowLocation.protocol).to.equal('https');
+      expect(topWindowLocation.hostname).to.equal('www.example.com');
+      expect(topWindowLocation.port).to.equal(0);
+      expect(topWindowLocation.pathname).to.equal('/');
+      expect(topWindowLocation.hash).to.equal('');
+      assert.deepEqual(topWindowLocation.search, {});
+      expect(topWindowLocation.host).to.equal('www.example.com');
+    });
+  });
 });