IPTools UK

HTTP Header Checker

See your own browser's request headers, or safely check the response headers, status and redirect chain of any public URL.

Your request headers

HeaderValue
accept*/*
accept-encodinggzip, br
cf-ipcountryUS
cf-raya3d382202be724d3
cf-visitor{"scheme":"https"}
connectionKeep-Alive
hostiptools.uk
user-agentMozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
x-forwarded-protohttps
x-real-ip216.73.217.120

Check a public URL

Only public http:// and https:// URLs on standard web ports are supported.

About this tool

HTTP headers carry metadata about a request or response — content type, caching rules, security policy, server software and more. This page has two independent parts: the headers your own browser sent to load this page, and a checker for inspecting the response headers of any public URL, with strong protections against the tool being misused to probe internal or private infrastructure.

How to use this tool

  1. Your own request headers are shown automatically at the top of this page.
  2. To check another site, enter a full URL including https:// and select "Check".

Frequently asked questions

Why can't I check any URL, like an internal address?
This tool blocks requests to localhost, private networks (e.g. 192.168.x.x, 10.x.x.x), link-local and other reserved IP ranges, to prevent it being used to probe internal infrastructure — a class of vulnerability known as server-side request forgery (SSRF). Only public, internet-routable HTTP/HTTPS URLs on standard web ports can be checked.
Why do I only see some response headers?
All headers the remote server returned are shown below the "commonly checked" summary. Some servers and CDNs deliberately omit headers like "Server" for security reasons — this is normal and not an error.
What counts as my own request headers?
These are the exact headers your browser sent with this page request, as seen by the server — useful for confirming what a proxy, VPN or browser extension might be adding, removing or changing.

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