DNS Gurus
Cached · just now
21 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Excellent
max-age=63072000; includeSubDomains; preload
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 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

4 headers
Accept-Ranges
Performance
bytes
Connection
Performance
close
Transfer-Encoding
Performance
chunked
Vary
Performance
Accept-Encoding

Caching Headers

3 headers
Cache-Control
Caching
private, max-age=0, proxy-revalidate, no-store, no-cache, must-revalidate
Expires
Caching
Sat, 26 Jul 2025 02:02:51 GMT
Pragma
Caching
no-cache

Content Headers

1 headers
Content-Type
Content
text/html; charset=UTF-8

Server Headers

3 headers
Server
Server
-
X-Aspnet-Version
Server
-
X-Aspnetmvc-Version
Server
-

CORS Headers

0 headers
No CORS headers found

Cookies Headers

1 headers
Set-Cookie
Cookies
SSRT_lq2r=pLNzaQAAAA; path=/; domain=.simyo.nl; expires=Sat, 23-Jan-2027 17:45:08 GMT

Other Headers

8 headers
Alt-Svc
Other
h3=":443"; ma=86400
Date
Other
Fri, 23 Jan 2026 17:45:08 GMT
Rtss
Other
100-*-2
Server-Timing
Other
cdn-upstream-layer;desc="EDGE",cdn-upstream-dns;dur=0,cdn-upstream-connect;dur=135,cdn-upstream-fbl;dur=314,cdn-cache-miss,cdn-pop;desc="IAD55-P10",cdn-rid;desc="MH8UJvcjao4pKQ5GgRAgf7juHckTiwhqKXyiY8-FEzVQIWyXQnw00A==",cdn-downstream-fbl;dur=355
Via
Other
1.1 312cc2b2351d4d9512783521cd4a9fcc.cloudfront.net (CloudFront)
X-Amz-Cf-Id
Other
MH8UJvcjao4pKQ5GgRAgf7juHckTiwhqKXyiY8-FEzVQIWyXQnw00A==
X-Amz-Cf-Pop
Other
IAD55-P10
X-Cache
Other
Miss from cloudfront

Recommendations

Enable compression (gzip/brotli) to improve performance