HTTP Headers Analysis for https://mail.blockscout.com

Detected Technologies from Headers

See all in URL Inspect 2

Cloudflare CDN

Heroku

HTTP Security Headers

Status

Strict-Transport-Security

Missing

Not configured

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 Strict-Transport-Security header with max-age of at least 1 year
• 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

Cache-Control

Caching

public, max-age=0, s-maxage=2592000, stale-while-revalidate=60

cache-control: public, max-age=0, s-maxage=2592000, stale-while-revalidate=60

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: __cf_bm=BMlAtiOfixD5w1NQU86C.2L40hIAA6LdQbNMTeOHohg-1778375001.5495949-1.0.1.1-mFqKAUbOyD6OXBC3skmTjfkhY77mVHTbZpEAaQuISJXA8I1hQOQkIl2onmqKzXQM0vm2K_68KDhJ7BkvY48Dg4zKcnNyoeQG_.jua8izpsc3096QEnbvOd6lbl3BJiiM; HttpOnly; Secure; Path=/; Domain=mail.blockscout.com; Expires=Sun, 10 May 2026 01:33:21 GMT

Other Headers

Cf-Cache-Status

Other

DYNAMIC

Cf-Ray

Other

9f95060faf20706a-IAD

Date

Other

Sun, 10 May 2026 01:03:21 GMT

Nel

Other

Report-To Group heroku-nel max-age: 1h

success: 1.0% failure: 10.0%

Report-To

Other

Group heroku-nel max-age: 1h

Endpoint 1 https://nel.heroku.com/reports?s=VuRs%2BDvYBz0%2BC9smqR%2FzupjQLnxXp5EOdad%2BRcTsZ8o%3D&sid=1b10b0ff-8a76-4548-befa-353fc6c6c045&ts=1778375001

Reporting-Endpoints

Other

heroku-nel="https://nel.heroku.com/reports?s=VuRs%2BDvYBz0%2BC9smqR%2FzupjQLnxXp5EOdad%2BRcTsZ8o%3D&sid=1b10b0ff-8a76-4548-befa-353fc6c6c045&ts=1778375001"

Server-Timing

Other

cfCacheStatus;desc="DYNAMIC", cfEdge;dur=8,cfOrigin;dur=124

Via

Other

1.1 heroku-router

X-Correlation-Id

Other

786d8e40-30a5-4560-9705-e0839b422cd6

X-Orchid-Version

Other

2

X-Release-Version

Other

v738

cf-cache-status: DYNAMIC
cf-ray: 9f95060faf20706a-IAD
date: Sun, 10 May 2026 01:03:21 GMT
nel: {"report_to":"heroku-nel","response_headers":["Via"],"max_age":3600,"success_fraction":0.01,"failure_fraction":0.1}
report-to: {"group":"heroku-nel","endpoints":[{"url":"https://nel.heroku.com/reports?s=VuRs%2BDvYBz0%2BC9smqR%2FzupjQLnxXp5EOdad%2BRcTsZ8o%3D\u0026sid=1b10b0ff-8a76-4548-befa-353fc6c6c045\u0026ts=1778375001"}],"max_age":3600}
reporting-endpoints: heroku-nel="https://nel.heroku.com/reports?s=VuRs%2BDvYBz0%2BC9smqR%2FzupjQLnxXp5EOdad%2BRcTsZ8o%3D&sid=1b10b0ff-8a76-4548-befa-353fc6c6c045&ts=1778375001"
server-timing: cfCacheStatus;desc="DYNAMIC", cfEdge;dur=8,cfOrigin;dur=124
via: 1.1 heroku-router
x-correlation-id: 786d8e40-30a5-4560-9705-e0839b422cd6
x-orchid-version: 2
x-release-version: v738

Recommendations

Enable compression (gzip/brotli) to improve performance