diff --git a/libraries/intentIqUtils/getRefferer.js b/libraries/intentIqUtils/getRefferer.js
index 20c6a6a5b47..2ed8a668a56 100644
--- a/libraries/intentIqUtils/getRefferer.js
+++ b/libraries/intentIqUtils/getRefferer.js
@@ -4,19 +4,25 @@ import { getWindowTop, logError, getWindowLocation, getWindowSelf } from '../../
  * Determines if the script is running inside an iframe and retrieves the URL.
  * @return {string} The encoded vrref value representing the relevant URL.
  */
-export function getReferrer() {
+
+export function getCurrentUrl() {
+  let url = '';
   try {
-    const url = getWindowSelf() === getWindowTop()
-      ? getWindowLocation().href
-      : getWindowTop().location.href;
+    if (getWindowSelf() === getWindowTop()) {
+      // top page
+      url = getWindowLocation().href || '';
+    } else {
+      // iframe
+      url = getWindowTop().location.href || '';
+    }
 
     if (url.length >= 50) {
-      const { origin } = new URL(url);
-      return origin;
-    }
+      return new URL(url).origin;
+    };
 
     return url;
   } catch (error) {
+    // Handling access errors, such as cross-domain restrictions
     logError(`Error accessing location: ${error}`);
     return '';
   }
@@ -31,12 +37,12 @@ export function getReferrer() {
  * @return {string} The modified URL with appended `vrref` or `fui` parameters.
  */
 export function appendVrrefAndFui(url, domainName) {
-  const fullUrl = encodeURIComponent(getReferrer());
+  const fullUrl = getCurrentUrl();
   if (fullUrl) {
     return (url += '&vrref=' + getRelevantRefferer(domainName, fullUrl));
   }
   url += '&fui=1'; // Full Url Issue
-  url += '&vrref=' + encodeURIComponent(domainName || '');
+  if (domainName) url += '&vrref=' + encodeURIComponent(domainName);
   return url;
 }
 
@@ -47,10 +53,9 @@ export function appendVrrefAndFui(url, domainName) {
  * @return {string} The relevant referrer
  */
 export function getRelevantRefferer(domainName, fullUrl) {
-  if (domainName && isDomainIncluded(fullUrl, domainName)) {
-    return fullUrl;
-  }
-  return domainName ? encodeURIComponent(domainName) : fullUrl;
+  return encodeURIComponent(
+    domainName && isDomainIncluded(fullUrl, domainName) ? fullUrl : (domainName || fullUrl)
+  );
 }
 
 /**
@@ -61,7 +66,7 @@ export function getRelevantRefferer(domainName, fullUrl) {
  */
 export function isDomainIncluded(fullUrl, domainName) {
   try {
-    return fullUrl.includes(domainName);
+    return new URL(fullUrl).hostname === domainName;
   } catch (error) {
     logError(`Invalid URL provided: ${error}`);
     return false;
diff --git a/modules/intentIqAnalyticsAdapter.js b/modules/intentIqAnalyticsAdapter.js
index 03f1aa65654..2122d918e44 100644
--- a/modules/intentIqAnalyticsAdapter.js
+++ b/modules/intentIqAnalyticsAdapter.js
@@ -5,7 +5,7 @@ import { ajax } from '../src/ajax.js';
 import { EVENTS } from '../src/constants.js';
 import { detectBrowser } from '../libraries/intentIqUtils/detectBrowserUtils.js';
 import { appendSPData } from '../libraries/intentIqUtils/urlUtils.js';
-import { appendVrrefAndFui, getReferrer } from '../libraries/intentIqUtils/getRefferer.js';
+import { appendVrrefAndFui, getCurrentUrl, getRelevantRefferer } from '../libraries/intentIqUtils/getRefferer.js';
 import { getCmpData } from '../libraries/intentIqUtils/getCmpData.js';
 import {
   VERSION,
@@ -267,9 +267,10 @@ function getRandom(start, end) {
 
 export function preparePayload(data) {
   const result = getDefaultDataObject();
+  const fullUrl = getCurrentUrl();
   result[PARAMS_NAMES.partnerId] = iiqAnalyticsAnalyticsAdapter.initOptions.partner;
   result[PARAMS_NAMES.prebidVersion] = prebidVersion;
-  result[PARAMS_NAMES.referrer] = getReferrer();
+  result[PARAMS_NAMES.referrer] = getRelevantRefferer(iiqAnalyticsAnalyticsAdapter.initOptions.domainName, fullUrl);
   result[PARAMS_NAMES.terminationCause] = iiqAnalyticsAnalyticsAdapter.initOptions.terminationCause;
   result[PARAMS_NAMES.clientType] = iiqAnalyticsAnalyticsAdapter.initOptions.clientType;
   result[PARAMS_NAMES.siteId] = iiqAnalyticsAnalyticsAdapter.initOptions.siteId;
diff --git a/test/spec/modules/intentIqAnalyticsAdapter_spec.js b/test/spec/modules/intentIqAnalyticsAdapter_spec.js
index c103aff65a0..987dec98f51 100644
--- a/test/spec/modules/intentIqAnalyticsAdapter_spec.js
+++ b/test/spec/modules/intentIqAnalyticsAdapter_spec.js
@@ -21,7 +21,7 @@ import {
 } from "../../../libraries/intentIqConstants/intentIqConstants.js";
 import * as detectBrowserUtils from "../../../libraries/intentIqUtils/detectBrowserUtils.js";
 import {
-  getReferrer,
+  getCurrentUrl,
   appendVrrefAndFui,
 } from "../../../libraries/intentIqUtils/getRefferer.js";
 import {
@@ -483,7 +483,7 @@ describe("IntentIQ tests all", function () {
       .stub(utils, "getWindowLocation")
       .returns({ href: "http://localhost:9876/" });
 
-    const referrer = getReferrer();
+    const referrer = getCurrentUrl();
     expect(referrer).to.equal("http://localhost:9876/");
   });
 
@@ -494,7 +494,7 @@ describe("IntentIQ tests all", function () {
       .stub(utils, "getWindowTop")
       .returns({ location: { href: "http://example.com/" } });
 
-    const referrer = getReferrer();
+    const referrer = getCurrentUrl();
 
     expect(referrer).to.equal("http://example.com/");
   });
@@ -506,7 +506,7 @@ describe("IntentIQ tests all", function () {
       .stub(utils, "getWindowTop")
       .throws(new Error("Access denied"));
 
-    const referrer = getReferrer();
+    const referrer = getCurrentUrl();
     expect(referrer).to.equal("");
     expect(logErrorStub.calledOnce).to.be.true;
     expect(logErrorStub.firstCall.args[0]).to.contain(
@@ -594,6 +594,36 @@ describe("IntentIQ tests all", function () {
     expect(request.url).to.include("general=Lee");
   });
 
+  it("should include domainName in both query and payload when fullUrl is empty (cross-origin)", function () {
+    const domainName = "mydomain-frame.com";
+
+    enableAnalyticWithSpecialOptions({ domainName });
+
+    getWindowTopStub = sinon.stub(utils, "getWindowTop").throws(new Error("cross-origin"));
+
+    events.emit(EVENTS.BID_WON, getWonRequest());
+
+    const request = server.requests[0];
+
+    // Query contain vrref=domainName
+    const parsedUrl = new URL(request.url);
+    const vrrefParam = parsedUrl.searchParams.get("vrref");
+
+    // Payload contain vrref=domainName
+    const payloadEncoded = parsedUrl.searchParams.get("payload");
+    const payloadDecoded = JSON.parse(atob(JSON.parse(payloadEncoded)[0]));
+
+    expect(server.requests.length).to.be.above(0);
+    expect(vrrefParam).to.not.equal(null);
+    expect(decodeURIComponent(vrrefParam)).to.equal(domainName);
+    expect(parsedUrl.searchParams.get("fui")).to.equal("1");
+
+    expect(payloadDecoded).to.have.property("vrref");
+    expect(decodeURIComponent(payloadDecoded.vrref)).to.equal(domainName);
+
+    restoreReportList();
+  });
+
   it("should not send additionalParams in report if value is too large", function () {
     const longVal = "x".repeat(5000000);