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 a248.e.akamai.net, *.akamaized.net, *.akamaized-staging.net, *.akamaihd.net, *.akamaihd-staging.net, not for groupondev.com

Cached · just now
12 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Present
max-age=15768000
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
  • • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • • 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
Connection
Performance
close
Vary
Performance
Accept-Encoding, User-Agent

Caching Headers

2 headers
Cache-Control
Caching
no-cache, no-store, must-revalidate
Expires
Caching
0

Content Headers

2 headers
Content-Length
Content
2138
Content-Type
Content
text/html

Server Headers

1 headers
Server
Server
Groupon

CORS Headers

0 headers
No CORS headers found

Cookies Headers

1 headers
Set-Cookie
Cookies
ak_bmsc=B14E09F64035DE5598DA172A8594CE20~000000000000000000000000000000~YAAQDR/XFw2mdgycAQAAZp26Th5lsgpgO7dfpWh1xdWelL3r/dPsyG60J3yNAVDsJTQ1sK0C0bGbpmNER7ILasDBK1jyZoUEm38Twm7gzQpZXjUWrihEbKWTnLp8u5vrG/xJ0I7fK4INIuOspMNOpBJB36DzC5N1CiPCsalqv3mOWgk5Zfx9ERe6yxaCzIWljeY1X2bK0eLHamC/GfzJ87IhbfEq8swwjIq5i/+xV0P2M3VaUX6cLNYroOjl92Ox5E+7ZnRw72hADm6Xwa0XI3euItUTQ3vJLYVonLwj0t0bcw+EOQkHhBOtNeOaP1mPFmAACFdEXjpCXlxpxK/zKa3eXRSjqOqyz/+KqBgHiXWUK5Mh46hmT33Ve6oU8mD+N+q8ik8sshpfEKe/QfWq9jWLDgHF; Domain=.groupon.com; Path=/; Expires=Thu, 12 Feb 2026 00:02:58 GMT; Max-Age=7200; HttpOnly

Other Headers

3 headers
Date
Other
Wed, 11 Feb 2026 22:02:58 GMT
Mime-Version
Other
1.0
X-Reference-Error
Other
18.d1fd717.1770847378.630abad8

Recommendations

Enable compression (gzip/brotli) to improve performance