HTTP Headers Analysis for https://api.mailercloud.com

Detected Technologies from Headers

See all in URL Inspect 2

Cloudflare NEL Monitoring

Cloudflare CDN

HTTP Security Headers

Status

Strict-Transport-Security

Present

max-age=15552000; includeSubDomains; preload

Content-Security-Policy

Missing

Not configured Analyze

Content-Security-Policy-Report-Only

Missing

Not configured Analyze

X-Frame-Options

Good

SAMEORIGIN

X-Content-Type-Options

Good

nosniff

Referrer-Policy

Present

same-origin

Permissions-Policy

Missing

Not configured

Recommendations

• Increase HSTS max-age to at least 1 year and add includeSubDomains
• Add Content-Security-Policy header to prevent XSS attacks
• Consider adding Permissions-Policy to control browser features

Performance Headers

Connection

Performance

close

Transfer-Encoding

Performance

chunked

Vary

Performance

User-Agent, accept-encoding

connection: close
transfer-encoding: chunked
vary: User-Agent, accept-encoding

Caching Headers

Cache-Control

Caching

no-cache, private, max-age=0

Expires

Caching

Wed, 13 May 2026 00:54:24 GMT

cache-control: no-cache, private, max-age=0
expires: Wed, 13 May 2026 00:54:24 GMT

Content Headers

Content-Type

Content

application/json

content-type: application/json

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-Apo-Via

Other

origin,host

Cf-Cache-Status

Other

DYNAMIC

Cf-Ray

Other

9fadb110ecd5d962-IAD

Date

Other

Wed, 13 May 2026 00:54:24 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=Gpr%2BghYXhKI2fNqBqU0rufPx8fApzRvnE3dwxqFY%2FipTmBkderVOwhtWWF%2BtxXFExgKB9TaE%2B4VzRZnSTQcpkqIsdTDiLCKq6QwipabUsS5POg5hYEPSXHBWeT%2BmrDBBY9DQAgw%3D

Server-Timing

Other

cfCacheStatus;desc="DYNAMIC", cfEdge;dur=288,cfOrigin;dur=0

Speculation-Rules

Other

"/cdn-cgi/speculation"

alt-svc: h3=":443"; ma=86400
cf-apo-via: origin,host
cf-cache-status: DYNAMIC
cf-ray: 9fadb110ecd5d962-IAD
date: Wed, 13 May 2026 00:54:24 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=Gpr%2BghYXhKI2fNqBqU0rufPx8fApzRvnE3dwxqFY%2FipTmBkderVOwhtWWF%2BtxXFExgKB9TaE%2B4VzRZnSTQcpkqIsdTDiLCKq6QwipabUsS5POg5hYEPSXHBWeT%2BmrDBBY9DQAgw%3D"}]}
server-timing: cfCacheStatus;desc="DYNAMIC", cfEdge;dur=288,cfOrigin;dur=0
speculation-rules: "/cdn-cgi/speculation"

Recommendations

Enable compression (gzip/brotli) to improve performance