DNS Gurus
Cached · just now
16 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Missing
Not configured
Content-Security-Policy
Missing
Not configured
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

2 headers
Accept-Ranges
Performance
bytes
Connection
Performance
close

Caching Headers

3 headers
Cache-Control
Caching
public, max-age=0
Etag
Caching
W/"40ea-19a3055cde8"
Last-Modified
Caching
Wed, 29 Oct 2025 14:18:41 GMT

Content Headers

2 headers
Content-Length
Content
16618
Content-Type
Content
text/html; charset=UTF-8

Server Headers

2 headers
Server
Server
cloudflare
X-Powered-By
Server
Express

CORS Headers

0 headers
No CORS headers found

Cookies Headers

0 headers
No cookies headers found

Other Headers

7 headers
Cf-Cache-Status
Other
DYNAMIC
Cf-Ray
Other
9c216ec09f228221-IAD
Date
Other
Thu, 22 Jan 2026 19:24:38 GMT
Nel
Other
{"report_to":"heroku-nel","response_headers":["Via"],"max_age":3600,"success_fraction":0.01,"failure_fraction":0.1}
Report-To
Other
{"group":"heroku-nel","endpoints":[{"url":"https://nel.heroku.com/reports?s=DKWfTTM%2Flws5IhZsF%2FZpZ7BLFccrxhJy5Hdex4WaMoI%3D\u0026sid=c4c9725f-1ab0-44d8-820f-430df2718e11\u0026ts=1769109878"}],"max_age":3600}
Reporting-Endpoints
Other
heroku-nel="https://nel.heroku.com/reports?s=DKWfTTM%2Flws5IhZsF%2FZpZ7BLFccrxhJy5Hdex4WaMoI%3D&sid=c4c9725f-1ab0-44d8-820f-430df2718e11&ts=1769109878"
Via
Other
2.0 heroku-router

Recommendations

Enable compression (gzip/brotli) to improve performance

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