DNS Gurus
Cached · just now
16 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Present
max-age=31536000
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

3 headers
Connection
Performance
close
Transfer-Encoding
Performance
chunked
Vary
Performance
accept-encoding

Caching Headers

2 headers
Age
Caching
168010
Last-Modified
Caching
Wed, 14 Jan 2026 22:16:04 GMT

Content Headers

1 headers
Content-Type
Content
text/html

Server Headers

1 headers
Server
Server
cloudflare

CORS Headers

0 headers
No CORS headers found

Cookies Headers

1 headers
Set-Cookie
Cookies
_cfuvid=tlrmgIFp3G0i4xeuUN5M5HtWH_kHIxhw7Cxal11Lzd8-1768596974841-0.0.1.1-604800000; path=/; domain=.www.bartlettinstrument.com; HttpOnly; Secure; SameSite=None

Other Headers

7 headers
Alt-Svc
Other
h3=":443"; ma=86400
Cf-Cache-Status
Other
HIT
Cf-Ray
Other
9bf084b47de08bd6-IAD
Date
Other
Fri, 16 Jan 2026 20:56:14 GMT
Surrogate-Control
Other
max-age=432000
Surrogate-Key
Other
www.bartlettinstrument.com 650de1c200bf9fc02e608d44 pageId:65c2d8430b635b7ab1e026a6 65c2d8430b635b7ab1e0275e
X-Lambda-Id
Other
1f893786-afdc-4411-a4ac-3adc54d278e9

Recommendations

Enable compression (gzip/brotli) to improve performance

Add Cache-Control header to optimize caching