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HTTP Header Checker

Fetch a limited public HTTPS response and show the status and headers, under strict request controls.

An https address, such as https://example.com/. You may leave out https://.

Try:

The button sends only what you typed to this site, which asks public DNS or that address for you. Up to 10 lookups a minute.

Your result

Type an address and press Look up to see its response headers.

How to use it

  1. Type an https address with a public hostname.
  2. Press Look up.
  3. Read the status. Redirects stay not followed.

Examples

  • Public pagehttps://smart.example/ status: 200 content-type: text/html strict-transport-security: (none) location: (none) set-cookie: (none) redirects: not followed
  • Cookie presenthttps://smart.example/cookie status: 301 content-type: (none) strict-transport-security: (none) location: https://smart.example/new set-cookie: present redirects: not followed
  • Missing pagehttps://smart.example/missing status: 404 content-type: text/plain strict-transport-security: (none) location: (none) set-cookie: (none) redirects: not followed
Tool details and privacy

Type one https address. This site requests that public address once, without following redirects, and shows the status and a few headers. A Set-Cookie value is not shown.

The status and a short header list show what the public response said. The page does not follow the next address and does not print a cookie.

Options

  • Only https on port 443. An IP address is refused.
  • The response is not cached, because the address is arbitrary.
  • A private or reserved address is not requested.

Limits

  • The download is capped and the request times out.
  • Set-Cookie is reported as present or (none).
  • An http address is refused.

Privacy

What you type is sent to this site so it can ask a public service or DNS. It is not stored in the tool analytics. A failed lookup is an error, not a made-up result.

Questions

Are redirects followed?

No.

Is the Set-Cookie value shown?

No. The line says present or (none).

Can I check an IP address or an http address?

No.

Is a private address requested?

No. The lookup stops before the request.

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