HTTP Headers Analysis for https://greynoise.io

Detected Technologies from Headers

See all in URL Inspect 1

Cloudflare CDN

HTTP Security Headers

Status

Strict-Transport-Security

Present

max-age=31536000

Content-Security-Policy

Weak

frame-ancestors Analyze

Content-Security-Policy-Report-Only

Missing

Not configured Analyze

X-Frame-Options

Good

SAMEORIGIN

X-Content-Type-Options

Missing

Not configured

Referrer-Policy

Missing

Not configured

Permissions-Policy

Missing

Not configured

Recommendations

• Increase HSTS max-age to at least 1 year and add includeSubDomains
• Significantly strengthen CSP directives
• Add X-Content-Type-Options: nosniff
• Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
• Consider adding Permissions-Policy to control browser features

Performance Headers

Connection

Performance

close

Transfer-Encoding

Performance

chunked

Vary

Performance

accept-encoding

connection: close
transfer-encoding: chunked
vary: accept-encoding

Caching Headers

Age

Caching

362332

Last-Modified

Caching

Thu, 23 Apr 2026 19:40:42 GMT

age: 362332
last-modified: Thu, 23 Apr 2026 19:40:42 GMT

Content Headers

Content-Type

Content

text/html; charset=utf-8

content-type: text/html; charset=utf-8

Server Headers

Server

cloudflare

server: cloudflare

CORS Headers

No CORS headers found

Cookies Headers

Set-Cookie

Cookies

set-cookie: _cfuvid=SRvFQTEA8Q6gFxInMNIv.tcgHXNyE7p6GoXyl6I1ISs-1777335574.9950762-1.0.1.1-7XkqylmyMAOIo8wfpXm9OF_d_IkZ46xeiK1GHBtgfWM; HttpOnly; SameSite=None; Secure; Path=/; Domain=www.greynoise.io

Other Headers

Alt-Svc

Other

h3=":443"; ma=86400

Cf-Cache-Status

Other

HIT

Cf-Ray

Other

9f31e56fbec15008-IAD

Date

Other

Tue, 28 Apr 2026 00:19:35 GMT

Surrogate-Control

Other

max-age=432000

Surrogate-Key

Other

www.greynoise.io 667dd40ebb8095e89f275639 pageId:667dd7d57680869346a61e0e 6837c2b3f2d39b2f0fdde0ff 67222a78f970e5bce0e1527d 667dd40ebb8095e89f2756d2 667dd40ebb8095e89f2757f3 667dd40ebb8095e89f2757f9

X-Lambda-Id

Other

ebcbfb25-801b-4d26-856f-fb79c2d7e28e

X-Wf-Region

Other

us-east-1

alt-svc: h3=":443"; ma=86400
cf-cache-status: HIT
cf-ray: 9f31e56fbec15008-IAD
date: Tue, 28 Apr 2026 00:19:35 GMT
surrogate-control: max-age=432000
surrogate-key: www.greynoise.io 667dd40ebb8095e89f275639 pageId:667dd7d57680869346a61e0e 6837c2b3f2d39b2f0fdde0ff 67222a78f970e5bce0e1527d 667dd40ebb8095e89f2756d2 667dd40ebb8095e89f2757f3 667dd40ebb8095e89f2757f9
x-lambda-id: ebcbfb25-801b-4d26-856f-fb79c2d7e28e
x-wf-region: us-east-1

Recommendations

Enable compression (gzip/brotli) to improve performance

Add Cache-Control header to optimize caching