| Header Name | Header Data |
|---|---|
| HTTP status code | 200 |
| X-Xss-Protection | 1; mode=block |
| X-Content-Type-Options | nosniff |
| Content-Security-Policy | frame-ancestors https://www.pnas.org |
| X-Webstats-Respid | d21e8d3d0b3e3240fd1e2da613783760 |
| Link | </products/pnas/releasedAssets/css/build-2ad62f1dd4248edef0e5.css>; rel=preload; as=style; |
| $0 | |
| Cf-Cache-Status | DYNAMIC |
| Server | cloudflare |
| Date | Tue, 08 Apr 2025 17:41:49 GMT |
| Connection | keep-alive |
| Referrer-Policy | no-referrer-when-downgrade |
| Alt-Svc | h3=":443"; ma=86400 |
| Cf-Ray | 92d38ec57f100a60-AMS |
| Content-Type | text/html;charset=UTF-8 |
| Cache-Control | no-cache |
| Strict-Transport-Security | max-age=15552000 |
| X-Frame-Options | ALLOW-FROM https://www.pnas.org |
| $1 |
By using SecurityHeaders.info, you can quickly identify missing or misconfigured headers and take steps to secure your website, improving both security and user confidence.
This tool is widely used by developers, security professionals, and organizations to ensure their websites adhere to best practices in web security.
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