DNS Gurus
Cached · just now
19 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Excellent
max-age=64072000; includeSubDomains; preload
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Add Content-Security-Policy header to prevent XSS attacks
  • • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
  • • Consider adding Permissions-Policy to control browser features

Performance Headers

3 headers
Connection
Performance
close
Transfer-Encoding
Performance
chunked
Vary
Performance
accept-encoding

Caching Headers

4 headers
Cache-Control
Caching
must-revalidate
Expires
Caching
Thu, 01 Jan 1970 00:00:00 GMT
Last-Modified
Caching
Tue, 16 Dec 2025 02:02:54 GMT
Pragma
Caching
no-cache

Content Headers

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

Server Headers

1 headers
Server
Server
cloudflare

CORS Headers

0 headers
No CORS headers found

Cookies Headers

1 headers
Set-Cookie
Cookies
serializedPermissionData=0:1:1767602039352:1976790000000002014; Max-Age=1200; Expires=Mon, 05 Jan 2026 08:53:59 GMT; Domain=www.synclogic.io; Path=/; Secure

Other Headers

6 headers
Alt-Svc
Other
h3=":443"; ma=86400
Cf-Cache-Status
Other
DYNAMIC
Cf-Ray
Other
9b91a248be50d63b-IAD
Date
Other
Mon, 05 Jan 2026 08:33:59 GMT
Nel
Other
{"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
Report-To
Other
{"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=TNOYAvRC0NvaWER8nApk%2F7C5YmXNC0ZzPxdoFgFvSImpzW9xpbCqIe2jY2EleraLAE2kZwiAQrac3%2FOlc0Owqk2IS1jGlbPuuf8ZuRzqD4Y%3D"}]}

Recommendations

Enable compression (gzip/brotli) to improve performance