DNS Gurus
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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=0D60FD4C702091AD57646BA62AB23E1F~000000000000000000000000000000~YAAQUmrcF6DqLO+bAQAAYoiW+R6oBAmTy9fs0IgzFpt/ch65M5ybQahFc5oB5+L0WlSpsVVkvJ2Iz27BrB33xFY1JBymrwTBienDv18uEGqlCpnnNo/wkp9O34tdEanTZpibqhCXWGAzVHn5qBCtnB0qFZLDistBwTsdjcvUfJC9ymJw7gR4x5Pxu6O4cCQV9IuSos0IxBvJZ+zLRJsDzCox8LaPOdVeC+voqWncc/pPWFL7cTjiLoWpe9jLEeu+7MAcDWuA4z4z0i7/xxWGKLROOS+pgWhEhtKfi80me5ZKBNDsIU4lCSpQqPBZrbrWpdVBfsCGiNjKXwIGm2csFupCB9gxpESnSrsyj6WyyQ92Tj+5m0oAQ3v3I0y5sacE/dIoHilH8RfzDFe1eFno5Ks66fZT; Domain=.groupon.com; Path=/; Expires=Mon, 26 Jan 2026 11:15:50 GMT; Max-Age=7200; HttpOnly

Other Headers

3 headers
Date
Other
Mon, 26 Jan 2026 09:15:50 GMT
Mime-Version
Other
1.0
X-Reference-Error
Other
18.526adc17.1769418950.1d318835

Recommendations

Enable compression (gzip/brotli) to improve performance