DNS Gurus

SSL Verification Bypassed

The server's SSL certificate could not be verified. The analysis was completed using insecure mode. Data may be less reliable.

Reason:

Hostname Mismatch - certificate is issued for *.github.io, *.github.com, *.githubusercontent.com, github.com, github.io, githubusercontent.com, www.github.com, not for artz.media

Cached · just now
20 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
Accept-Ranges
Performance
bytes
Vary
Performance
Accept-Encoding

Caching Headers

5 headers
Age
Caching
0
Cache-Control
Caching
max-age=600
Etag
Caching
"66a111d1-1dd7"
Expires
Caching
Tue, 13 Jan 2026 06:26:47 GMT
Last-Modified
Caching
Wed, 24 Jul 2024 14:38:09 GMT

Content Headers

2 headers
Content-Length
Content
7639
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

9 headers
Date
Other
Tue, 13 Jan 2026 06:16:47 GMT
Via
Other
1.1 varnish
X-Cache
Other
MISS
X-Cache-Hits
Other
0
X-Fastly-Request-Id
Other
b628d283e09350e6282dc501c4ba740e2dc17673
X-Github-Request-Id
Other
E7DF:30DD3D:D1397E:E91420:6965E34E
X-Proxy-Cache
Other
MISS
X-Served-By
Other
cache-lga21993-LGA
X-Timer
Other
S1768285007.150019,VS0,VE16

Recommendations

Enable compression (gzip/brotli) to improve performance