DNS Gurus
Cached · just now
26 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Present
max-age=31536000
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
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
  • • 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

5 headers
Age
Caching
38
Cache-Control
Caching
max-age=604800
Etag
Caching
"7db3b43a51ab1a9af12e80983dda2363"
Expires
Caching
Tue, 20 Jan 2026 12:22:50 GMT
Pragma
Caching
no-cache

Content Headers

1 headers
Content-Type
Content
text/html;charset=UTF-8

Server Headers

1 headers
Server
Server
istio-envoy

CORS Headers

3 headers
Access-Control-Allow-Credentials
Cors
true
Access-Control-Allow-Headers
Cors
Origin, X-Requested-With, Content-Type, Accept
Access-Control-Allow-Origin
Cors
https://www.busuu.com

Cookies Headers

1 headers
Set-Cookie
Cookies
grav-site-7f7febf=c2bb6d18122a0db8adec251b4399de7d; expires=Tue, 13-Jan-2026 14:22:49 GMT; Max-Age=7200; path=/; domain=www.busuu.com; secure; HttpOnly; SameSite=Lax

Other Headers

7 headers
Alt-Svc
Other
h3=":443"; ma=86400
Date
Other
Tue, 13 Jan 2026 12:22:50 GMT
Via
Other
1.1 b7cbbb5fc9e4636e7dedd6e4f6aa0eaa.cloudfront.net (CloudFront)
X-Amz-Cf-Id
Other
Ab8UALz6WFciD39_TvO47lGZn-KQ9HCI2incXeh-FidQ2b43btDWkA==
X-Amz-Cf-Pop
Other
IAD61-P12
X-Cache
Other
Hit from cloudfront
X-Envoy-Upstream-Service-Time
Other
1068

Recommendations

Enable compression (gzip/brotli) to improve performance