DNS Gurus
Cached · just now
22 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

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

Caching Headers

4 headers
Cache-Control
Caching
max-age=600
Etag
Caching
"68fbf331-107b"
Expires
Caching
Fri, 26 Dec 2025 03:40:04 GMT
Last-Modified
Caching
Fri, 24 Oct 2025 21:44:17 GMT

Content Headers

2 headers
Content-Length
Content
4219
Content-Type
Content
text/html; charset=utf-8

Server Headers

1 headers
Server
Server
GitHub.com

CORS Headers

1 headers
Access-Control-Allow-Origin
Cors
*

Cookies Headers

0 headers
No cookies headers found

Other Headers

11 headers
Date
Other
Fri, 26 Dec 2025 03:30:04 GMT
Via
Other
1.1 varnish, 1.1 87231a08ea3c7f15402d76db2a29d98c.cloudfront.net (CloudFront)
X-Amz-Cf-Id
Other
3FwwQ63Tl3NCzI_C5CqXby8RqdDnQnmarAieqGIF63onV67i0nyBFQ==
X-Amz-Cf-Pop
Other
IAD61-P4
X-Cache
Other
RefreshHit from cloudfront
X-Cache-Hits
Other
0
X-Fastly-Request-Id
Other
7d14f77e8b220f1331fc6daa59d79652d272f08b
X-Github-Request-Id
Other
1186:20FC7E:2362A5F:25B57FF:694CDD82
X-Proxy-Cache
Other
MISS
X-Served-By
Other
cache-iad-kcgs7200064-IAD
X-Timer
Other
S1766648532.984943,VS0,VE11

Recommendations

Enable compression (gzip/brotli) to improve performance

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