DNS Gurus
Cached · just now
17 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Missing
Not configured
Content-Security-Policy
Good
default-src; style-src; img-src; +1 more
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
  • • Strengthen CSP by removing 'unsafe-eval'
  • • 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

3 headers
Accept-Ranges
Performance
bytes
Connection
Performance
close
Vary
Performance
Accept-Encoding

Caching Headers

2 headers
Age
Caching
55
Etag
Caching
"695d4919-239b"

Content Headers

2 headers
Content-Length
Content
9115
Content-Type
Content
text/html; charset=utf-8

Server Headers

1 headers
Server
Server
GitHub.com

CORS Headers

0 headers
No CORS headers found

Cookies Headers

0 headers
No cookies headers found

Other Headers

8 headers
Date
Other
Thu, 15 Jan 2026 21:01:07 GMT
Via
Other
1.1 varnish
X-Cache
Other
HIT
X-Cache-Hits
Other
1
X-Fastly-Request-Id
Other
5677bb72b4fd6462a03bd099cf595029d45f4766
X-Github-Request-Id
Other
837D:23A191:891878:97842E:6969555C
X-Served-By
Other
cache-ewr-kewr1740078-EWR
X-Timer
Other
S1768510868.826282,VS0,VE4

Recommendations

Enable compression (gzip/brotli) to improve performance

Add Cache-Control header to optimize caching