HTTP Headers Analysis for https://blockscout.com

Detected Technologies from Headers

See all in URL Inspect 10

Cloudflare NEL Monitoring

Cloudflare CDN

Google Analytics

Google Conversion Tracking

Google Fonts

Google Search

Google Tag Manager

Mixpanel

OpenAI Active incidents

Express

HTTP Security Headers

Status

Strict-Transport-Security

Missing

Not configured

Content-Security-Policy

Good

default-src; base-uri; object-src; +9 more 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 Strict-Transport-Security header with max-age of at least 1 year
• Strengthen CSP by removing 'unsafe-eval'
• 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

Cache-Control

Caching

no-store, max-age=0

cache-control: no-store, max-age=0

Content Headers

Content-Type

Content

text/html; charset=utf-8

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

Server Headers

Server

cloudflare

X-Powered-By

Server

Express

server: cloudflare
x-powered-by: Express

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

DYNAMIC

Cf-Ray

Other

9f58ae23cbd9e2ca-IAD

Date

Other

Sat, 02 May 2026 17:17:35 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=mY%2FJpVzxHZ6lVXxyEfSIIvQaHcC7ApLmMC7S9q1P%2BEmyJD4qqbO2CLx2RBn5nLttC2rXheTuB5cbYAObTBx2GNgmttp2po59hILaf%2FUS0aUIQMDnZuUYxC2rNeuEsyrpNVnssg%3D%3D

Server-Timing

Other

cfCacheStatus;desc="DYNAMIC", cfEdge;dur=19,cfOrigin;dur=654

alt-svc: h3=":443"; ma=86400
cf-cache-status: DYNAMIC
cf-ray: 9f58ae23cbd9e2ca-IAD
date: Sat, 02 May 2026 17:17:35 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=mY%2FJpVzxHZ6lVXxyEfSIIvQaHcC7ApLmMC7S9q1P%2BEmyJD4qqbO2CLx2RBn5nLttC2rXheTuB5cbYAObTBx2GNgmttp2po59hILaf%2FUS0aUIQMDnZuUYxC2rNeuEsyrpNVnssg%3D%3D"}]}
server-timing: cfCacheStatus;desc="DYNAMIC", cfEdge;dur=19,cfOrigin;dur=654

Recommendations

Enable compression (gzip/brotli) to improve performance

Consider removing X-Powered-By header to hide server technology