DNS Gurus
Cached · just now
11 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Missing
Not configured
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
  • • Add Strict-Transport-Security header with max-age of at least 1 year
  • • 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
rsc, next-router-state-tree, next-router-prefetch, next-router-segment-prefetch, Accept-Encoding

Caching Headers

1 headers
Cache-Control
Caching
private, no-cache, no-store, max-age=0, must-revalidate

Content Headers

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

Server Headers

1 headers
X-Powered-By
Server
Next.js

CORS Headers

0 headers
No CORS headers found

Cookies Headers

1 headers
Set-Cookie
Cookies
NEXT_LOCALE=ja; Path=/; SameSite=lax

Other Headers

4 headers
Alt-Svc
Other
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
Date
Other
Mon, 12 Jan 2026 11:13:45 GMT
Link
Other
</_next/static/media/e24507cc2fd99222-s.p.842583a9.woff2>; rel=preload; as="font"; crossorigin=""; type="font/woff2", </_next/static/media/sf_pro_rounded_bold-s.p.8338b5e5.otf>; rel=preload; as="font"; crossorigin=""; type="font/otf", </_next/static/media/sf_pro_rounded_regular-s.p.f01bc858.otf>; rel=preload; as="font"; crossorigin=""; type="font/otf"
Via
Other
1.1 google

Recommendations

Enable compression (gzip/brotli) to improve performance

Consider removing X-Powered-By header to hide server technology