DNS Gurus
Cached · just now
15 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
Connection
Performance
close
Vary
Performance
Accept-Encoding

Caching Headers

2 headers
Cache-Control
Caching
private, no-cache, no-store, max-age=0, must-revalidate
Etag
Caching
"15y53n889zuav2o"

Content Headers

3 headers
Content-Language
Content
en-US
Content-Length
Content
508172
Content-Type
Content
text/html; charset=utf-8

Server Headers

1 headers
Server
Server
istio-envoy

CORS Headers

0 headers
No CORS headers found

Cookies Headers

1 headers
Set-Cookie
Cookies
_strava4_session=vaj21faj2ilb6rhblk070dap1rom9b3n; Domain=.strava.com; Path=/; HttpOnly; Secure

Other Headers

6 headers
Date
Other
Tue, 30 Dec 2025 15:27:08 GMT
Via
Other
1.1 87e02820e63ff6cf9cd98d9efbaab1fc.cloudfront.net (CloudFront)
X-Amz-Cf-Id
Other
CxXx7lmkZBYDd-NVemys6vM-tBiYCB2z9Xe6y8bcQ3jQB9F0kx1HGw==
X-Amz-Cf-Pop
Other
IAD55-P5
X-Cache
Other
Miss from cloudfront
X-Envoy-Upstream-Service-Time
Other
136

Recommendations

Enable compression (gzip/brotli) to improve performance