Checks come from cloud address ranges that change, so there are no fixed IP addresses to allowlist. If a firewall or bot protection sits in front of your site, let our checks through in one of these ways:

  • Add a secret custom header to the monitor and allow requests that carry it. This is the reliable option, because nobody else knows the value.
  • Match our User-Agent, site-qwality-check/1.0. It identifies our checks but is not a secret, so treat it as a hint rather than proof.
  • If the site’s bot protection still refuses a check, the result says Blocked by bot protection and counts as down. Checking from a location on another provider can help.
  • The allowlisting guide walks through each step. If you need checks from a fixed address, contact us.