---
title: "How to check the TLS version of your load balancers"
date: "2022-03-15T04:06:13+00:00"
summary:
image:
type: "article"
url: "/acquia-cloud-platform/help/92536-how-check-tls-version-your-load-balancers"
id: "f8b72e9f-98c0-474a-bf6e-2732a2a3fb87"
---

To accurately determine the TLS version of your load balancers, it is recommended that all tests are run against the default domain of your application (\[your-application\].prod.acquia-sites.com). Using other custom domains, which may or may not be routed through other services (for example a CDN such as Cloudflare) may not garner accurate results.

It is recommended that you use an online tool such as Qualys ([https://www.ssllabs.com/](https://www.ssllabs.com/)) for your tests or alternatively you can use the command line tool nmap like so:

    nmap --script ssl-enum-ciphers -p 443 [your-application].prod.acquia-sites.com