DNS Gurus
Cached · just now
29 Headers

HTTP Security Headers

Status
Strict-Transport-Security
Good
max-age=31536000; includeSubDomains
Content-Security-Policy
Good
base-uri; default-src; frame-ancestors; +9 more
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
no-referrer
Permissions-Policy
Missing
Not configured
Recommendations
  • • Consider adding 'preload' to HSTS for maximum security
  • • Strengthen CSP by removing 'unsafe-eval'
  • • Consider adding Permissions-Policy to control browser features

Performance Headers

3 headers
Accept-Ranges
Performance
bytes
Connection
Performance
close
Vary
Performance
Accept-Encoding

Caching Headers

3 headers
Cache-Control
Caching
no-store
Etag
Caching
W/"91e5-/d+PMlQL1IpYMX3EizIgOFw+idM"
Pragma
Caching
no-cache

Content Headers

2 headers
Content-Length
Content
37349
Content-Type
Content
text/html; charset=utf-8

Server Headers

0 headers
No server headers found

CORS Headers

0 headers
No CORS headers found

Cookies Headers

1 headers
Set-Cookie
Cookies
GU_mvt_id=657280;path=/;expires=Mon, 30 Mar 2026 11:00:21 GMT;domain=.code.dev-theguardian.com;Secure;SameSite=Lax

Other Headers

12 headers
Date
Other
Tue, 30 Dec 2025 11:00:21 GMT
Origin-Agent-Cluster
Other
?1
Via
Other
1.1 varnish
X-Cache
Other
MISS
X-Cache-Hits
Other
0
X-Dns-Prefetch-Control
Other
off
X-Download-Options
Other
noopen
X-Gu-Geolocation
Other
US
X-Gu-Geolocation-State
Other
VA
X-Permitted-Cross-Domain-Policies
Other
none
X-Served-By
Other
cache-iad-kiad7000154-IAD
X-Timer
Other
S1767092421.471363,VS0,VE466

Recommendations

Enable compression (gzip/brotli) to improve performance