HTTP Headers Analysis for https://doi.org

Detected Technologies from Headers

See all in URL Inspect 4

Cloudflare NEL Monitoring

AWS CloudFront

Amazon S3

Cloudflare CDN

HTTP Security Headers

Status

Strict-Transport-Security

Excellent

max-age=31536000; includeSubDomains; preload

Content-Security-Policy

Missing

Not configured Analyze

Content-Security-Policy-Report-Only

Missing

Not configured Analyze

X-Frame-Options

Missing

Not configured

X-Content-Type-Options

Missing

Not configured

Referrer-Policy

Missing

Not configured

Permissions-Policy

Missing

Not configured

Recommendations

• Add Content-Security-Policy header to prevent XSS attacks
• Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
• 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

6435

Etag

Caching

W/"7d3a34449b2d4744c15d94f9ff72b656"

Last-Modified

Caching

Wed, 30 Sep 2026 10:02:11 GMT

age: 6435
etag: W/"7d3a34449b2d4744c15d94f9ff72b656"
last-modified: Wed, 30 Sep 2026 10:02:11 GMT

Content Headers

Content-Type

Content

text/html

content-type: text/html

Server Headers

Server

cloudflare

server: cloudflare

CORS Headers

No CORS headers found

Cookies Headers

No cookies headers found

Other Headers

Alt-Svc

Other

h3=":443"; ma=86400

Cf-Cache-Status

Other

HIT

Cf-Ray

Other

a4c238237ead16a7-IAD

Date

Other

Sat, 17 Oct 2026 20:58:04 GMT

Nel

Other

Report-To Group cf-nel max-age: 1w

success: 0.0%

Report-To

Other

Group cf-nel max-age: 1w

Endpoint 1 https://a.nel.cloudflare.com/report/v4?s=9hkECMhgqXQf9%2BDW3Ve3ejRt4PelQMx%2BnelpDz%2Bm3NwwuqDPwjs2ZmezvXbTfpHXwQCvC5kamZHg1sqRp7ft5pwvXqU%2FgdGIqJqTHEHce2XjCMVy58WYA4fOIX%2BV

Via

Other

1.1 d50dfba7cdc75e038fa691e4f574341a.cloudfront.net (CloudFront)

X-Amz-Cf-Id

Other

ZjTx4i-C-8f_g6J72Zd72KH5BPbTWrxIqmg_9COgf-ofyRtuEBVYwQ==

X-Amz-Cf-Pop

Other

IAD55-P9

X-Amz-Meta-Md5chksum

Other

7d3a34449b2d4744c15d94f9ff72b656

X-Amz-Server-Side-Encryption

Other

AES256

X-Cache

Other

Hit from cloudfront

alt-svc: h3=":443"; ma=86400
cf-cache-status: HIT
cf-ray: a4c238237ead16a7-IAD
date: Sat, 17 Oct 2026 20:58:04 GMT
nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
report-to: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=9hkECMhgqXQf9%2BDW3Ve3ejRt4PelQMx%2BnelpDz%2Bm3NwwuqDPwjs2ZmezvXbTfpHXwQCvC5kamZHg1sqRp7ft5pwvXqU%2FgdGIqJqTHEHce2XjCMVy58WYA4fOIX%2BV"}]}
via: 1.1 d50dfba7cdc75e038fa691e4f574341a.cloudfront.net (CloudFront)
x-amz-cf-id: ZjTx4i-C-8f_g6J72Zd72KH5BPbTWrxIqmg_9COgf-ofyRtuEBVYwQ==
x-amz-cf-pop: IAD55-P9
x-amz-meta-md5chksum: 7d3a34449b2d4744c15d94f9ff72b656
x-amz-server-side-encryption: AES256
x-cache: Hit from cloudfront

Recommendations

Enable compression (gzip/brotli) to improve performance

Add Cache-Control header to optimize caching