---
title: "Unfamiliar Google Tag Manager container GTM-MLRSRZ3"
description: "You may see a Google Tag Manager container ID, GTM-MLRSRZ3, in your site's page source that you did not add. This is HomeRunner's own analytics container.…"
url: "https://homerunner.io/docs/there-is-a-google-tag-manager-container-id-gtm-mlrsrz3-in-my-homerunner-site-s-p/"
updated: "2026-10-26"
category: Setup and plugins
---

# Unfamiliar Google Tag Manager container GTM-MLRSRZ3

You may see a Google Tag Manager container ID, GTM-MLRSRZ3, in your site's page source that you did not add.

This is HomeRunner's own analytics container. It is used across HomeRunner-powered sites for booking-engine measurement and is separate from your GA4 property. You do not need to remove or change it.

Still stuck? [Contact the HomeRunner team](https://homerunner.io/contact/) with your site address and what you tried, and we take it from there.