diff --git a/modules/ttdBidAdapter.js b/modules/ttdBidAdapter.js
index 56dc44827b7..e12e3441a5d 100644
--- a/modules/ttdBidAdapter.js
+++ b/modules/ttdBidAdapter.js
@@ -133,7 +133,7 @@ function getUser(bidderRequest) {
 
 function getSite(bidderRequest, firstPartyData) {
   var site = utils.mergeDeep({
-    page: utils.deepAccess(bidderRequest, 'refererInfo.page'),
+    page: utils.deepAccess(bidderRequest, 'refererInfo.topmostLocation') || utils.deepAccess(bidderRequest, 'refererInfo.page'),
     ref: utils.deepAccess(bidderRequest, 'refererInfo.ref'),
     publisher: {
       id: utils.deepAccess(bidderRequest, 'bids.0.params.publisherId'),
diff --git a/test/spec/modules/ttdBidAdapter_spec.js b/test/spec/modules/ttdBidAdapter_spec.js
index 346f1ef88f6..f8004a246ad 100644
--- a/test/spec/modules/ttdBidAdapter_spec.js
+++ b/test/spec/modules/ttdBidAdapter_spec.js
@@ -291,6 +291,19 @@ describe('ttdBidAdapter', function () {
       expect(requestBody.site.page).to.equal('https://www.example.com/test');
     });
 
+    it('use top most location if available in the bid request', function () {
+      const topmostLocation = 'https://www.topdomain.com/xyz';
+      const bidRequestWithTopMost = {
+        ...baseBidderRequest,
+        refererInfo: {
+          ...baseBidderRequest.refererInfo,
+          topmostLocation: topmostLocation
+        }
+      };
+      const requestBody = testBuildRequests(baseBannerBidRequests, bidRequestWithTopMost).data;
+      expect(requestBody.site.page).to.equal(topmostLocation);
+    });
+
     it('sets the banner pos correctly if sent', function () {
       let clonedBannerRequests = deepClone(baseBannerBidRequests);
       clonedBannerRequests[0].mediaTypes.banner.pos = 1;