DNS Gurus
Cached · just now
28 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Weak
max-age=0
Content-Security-Policy
Basic
base-uri; block-all-mixed-content; frame-ancestors; +4 more
X-Frame-Options
Excellent
DENY
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
  • • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • • Improve CSP by adding more specific directives and removing 'unsafe-inline'
  • • 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, Accept-Encoding

Caching Headers

3 headers
Age
Caching
174
Cache-Control
Caching
max-age=0, public, must-revalidate, s-maxage=600
Etag
Caching
W/"046f665132947c6312f82ca8db60ff6d"

Content Headers

2 headers
Content-Length
Content
47195
Content-Type
Content
text/html; charset=utf-8

Server Headers

2 headers
Server
Server
Heroku
X-Runtime
Server
0.119386

CORS Headers

0 headers
No CORS headers found

Cookies Headers

0 headers
No cookies headers found

Other Headers

12 headers
Date
Other
Wed, 14 Jan 2026 22:54:18 GMT
Nel
Other
{"report_to":"heroku-nel","response_headers":["Via"],"max_age":3600,"success_fraction":0.01,"failure_fraction":0.1}
Report-To
Other
{"group":"heroku-nel","endpoints":[{"url":"https://nel.heroku.com/reports?s=l3au5kD%2B6yDSwHmab3tSFAnLJpPERM0983IY4PmSNQk%3D\u0026sid=c46efe9b-d3d2-4a0c-8c76-bfafa16c5add\u0026ts=1768431085"}],"max_age":3600}
Reporting-Endpoints
Other
heroku-nel="https://nel.heroku.com/reports?s=l3au5kD%2B6yDSwHmab3tSFAnLJpPERM0983IY4PmSNQk%3D&sid=c46efe9b-d3d2-4a0c-8c76-bfafa16c5add&ts=1768431085"
Via
Other
1.1 heroku-router, 1.1 varnish, 1.1 varnish, 1.1 varnish
X-Cache
Other
MISS, HIT, MISS
X-Cache-Hits
Other
0, 1, 0
X-Download-Options
Other
noopen
X-Permitted-Cross-Domain-Policies
Other
none
X-Request-Id
Other
cfc4b50e-2a23-379b-b7e3-1f4530a89efd
X-Served-By
Other
cache-lga21923-LGA, cache-lga21924-LGA, cache-ewr-kewr1740067-EWR
X-Timer
Other
S1768431259.851806,VS0,VE3

Recommendations

Enable compression (gzip/brotli) to improve performance