Guest session
Check Detail

heathrow.com · DNS

Passed Grade A
100.0%
Hostname heathrow.com
Check name DNS
last run 12/12/2025 09:48
Result
Passed Grade B 88.5%

Result Detail

DNS
Host Type Answer TTL
20.123.127.245 —
20.101.251.73 —

Result Detail

HEADER
Alerts
  • Strict-Transport-Security: HSTS active but consider preload
  • Cross-Origin-Opener-Policy: Header missing
  • Cross-Origin-Embedder-Policy: Header missing
  • Cross-Origin-Resource-Policy: Header missing
  • Expect-CT: Expect-CT missing
  • X-Permitted-Cross-Domain-Policies: Header missing
  • Access-Control-Allow-Origin: Access-Control-Allow-Origin missing
  • Origin-Agent-Cluster: Header missing
Normalized headers
date Fri, 12 Dec 2025 08:48:54 GMT
content-type text/html;charset=utf-8
content-length 1150860
service-worker-allowed /
x-frame-options SAMEORIGIN
strict-transport-security max-age=63072000; includeSubdomains;
permissions-policy fullscreen=(self "https://www.youtube-nocookie.com"), microphone=(), camera=()
x-dispatcher dispatcher3euwest2-b80
x-vhost publish
x-content-type-options nosniff
x-xss-protection 1; mode=block
content-security-policy frame-ancestors 'self';; frame-ancestors 'self';
referrer-policy strict-origin-when-cross-origin
vary Accept-Encoding,User-Agent
x-cache TCP_MISS
via 1.1 5321ce1f67b98139d1f43997aea9b44a.cloudfront.net (CloudFront)
x-amz-cf-pop CDG50-P1
x-amz-cf-id 2V3l4hHpLF0CAmeyqHcAoguEeHchhEjdd0sdIVw01DYX2cBGWDYRbw==
x-azure-ref 20251212T084854Z-185d974d666h7gj4hC1FRAfzk800000006gg000000009twn
cache-control public, max-age=300
x-fd-int-roxy-purgeid 0
accept-ranges bytes
Transport
Check name Status Actual Expected Detail Severity Recommendation
Strict-Transport-Security ⚠️ Warning max-age=63072000; includeSubdomains; max-age>=15768000; includeSubDomains; preload HSTS active but consider preload Critical Strict-Transport-Security: max-age=63072000; includeSubDomains; preload
Expect-CT ❌ Missing enforce; max-age>=86400 Expect-CT missing Medium Expect-CT: enforce, max-age=86400, report-uri="https://report.example.com"
Content Security
Check name Status Actual Expected Detail Severity Recommendation
Content-Security-Policy ✅ Passed frame-ancestors 'self';; frame-ancestors 'self'; default-src 'self'; frame-ancestors 'none' default-src 'self'; frame-ancestors 'none' Critical Content-Security-Policy: default-src 'self'; frame-ancestors 'none'
MIME
Check name Status Actual Expected Detail Severity Recommendation
X-Content-Type-Options ✅ Passed nosniff nosniff Value matches recommendation High X-Content-Type-Options: nosniff
Framing
Check name Status Actual Expected Detail Severity Recommendation
X-Frame-Options ✅ Passed SAMEORIGIN DENY or SAMEORIGIN Value accepted High X-Frame-Options: DENY
Privacy
Check name Status Actual Expected Detail Severity Recommendation
Referrer-Policy ✅ Passed strict-origin-when-cross-origin strict-origin-when-cross-origin / same-origin strict-origin-when-cross-origin Medium Referrer-Policy: strict-origin-when-cross-origin
Browser Features
Check name Status Actual Expected Detail Severity Recommendation
Permissions-Policy ✅ Passed fullscreen=(self "https://www.youtube-nocookie.com"), microphone=(), camera=() camera=(); geolocation=(); microphone=() camera=(); geolocation=(); microphone=() Medium Permissions-Policy: camera=(), geolocation=(), microphone=()
Cross-Origin
Check name Status Actual Expected Detail Severity Recommendation
Cross-Origin-Opener-Policy ❌ Missing same-origin Header missing High Cross-Origin-Opener-Policy: same-origin
Cross-Origin-Embedder-Policy ❌ Missing require-corp Header missing High Cross-Origin-Embedder-Policy: require-corp
Cross-Origin-Resource-Policy ❌ Missing same-origin Header missing Medium Cross-Origin-Resource-Policy: same-origin
Origin-Agent-Cluster ❌ Missing ?1 Header missing Low Origin-Agent-Cluster: ?1
Caching
Check name Status Actual Expected Detail Severity Recommendation
Cache-Control ✅ Passed public, max-age=300 no-store, private, max-age=0 no-store, private, max-age=0 High Cache-Control: no-store, private, max-age=0
Legacy
Check name Status Actual Expected Detail Severity Recommendation
X-Permitted-Cross-Domain-Policies ❌ Missing none Header missing Low X-Permitted-Cross-Domain-Policies: none
CORS
Check name Status Actual Expected Detail Severity Recommendation
Access-Control-Allow-Origin ❌ Missing Scoped origin (no wildcard) Access-Control-Allow-Origin missing Medium Access-Control-Allow-Origin: https://app.example.com
Information Disclosure
Check name Status Actual Expected Detail Severity Recommendation
Server ✅ Passed Header removed or generic Header not exposed High Remove Server header or set to a generic token
X-Powered-By ✅ Passed Header removed Header not exposed High Remove X-Powered-By header
X-AspNet-Version ✅ Passed Header removed Header not exposed Medium Remove framework version headers
Raw headers
HTTP/2 200 
date: Fri, 12 Dec 2025 08:48:54 GMT
content-type: text/html;charset=utf-8
content-length: 1150860
service-worker-allowed: /
x-frame-options: SAMEORIGIN
strict-transport-security: max-age=63072000; includeSubdomains;
permissions-policy: fullscreen=(self "https://www.youtube-nocookie.com"), microphone=(), camera=()
x-dispatcher: dispatcher3euwest2-b80
x-vhost: publish
x-content-type-options: nosniff
x-xss-protection: 1; mode=block
content-security-policy: frame-ancestors 'self';
content-security-policy: frame-ancestors 'self';
referrer-policy: strict-origin-when-cross-origin
vary: Accept-Encoding,User-Agent
x-cache: TCP_MISS
via: 1.1 5321ce1f67b98139d1f43997aea9b44a.cloudfront.net (CloudFront)
x-amz-cf-pop: CDG50-P1
x-amz-cf-id: 2V3l4hHpLF0CAmeyqHcAoguEeHchhEjdd0sdIVw01DYX2cBGWDYRbw==
x-azure-ref: 20251212T084854Z-185d974d666h7gj4hC1FRAfzk800000006gg000000009twn
cache-control: public, max-age=300
x-fd-int-roxy-purgeid: 0
accept-ranges: bytes

Result Detail

SSL
Check name Status Value
certificate chain is complete ✅ Passed 4
root CA is trusted ✅ Passed Trusted
cert valid for ✅ Passed 240
chain certs are valid until ✅ Passed 09.08.2026
CN matches Domainname ✅ Passed heathrow.com
certificate subject ✅ Passed C=GB, L=Hounslow, O=Heathrow Airport Holdings Limited, CN=www.heathrow.com
certificate issuer ✅ Passed C=US, O=DigiCert Inc, CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1
signature algorithm ✅ Passed RSA-SHA256
TLS protocol ✅ Passed TLSv1.3 TLS_AES_256_GCM_SHA384
Subject Alternative Names ✅ Passed heathrow.com, www.heathrow.com
Public Key ✅ Passed RSA 2048
Certificate chain
# Common name Issuer Valid until CA
0 www.heathrow.com C=US, O=DigiCert Inc, CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1 09.08.2026 01:59:59 No
1 www.heathrow.com C=US, O=DigiCert Inc, CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1 09.08.2026 01:59:59 No
2 DigiCert Global G2 TLS RSA SHA256 2020 CA1 C=US, O=DigiCert Inc, OU=www.digicert.com, CN=DigiCert Global Root G2 30.03.2031 00:59:59 Yes
3 DigiCert Global Root G2 C=US, O=DigiCert Inc, OU=www.digicert.com, CN=DigiCert Global Root G2 15.01.2038 13:00:00 Yes
TLS details
Negotiated protocol TLSv1.3
Cipher suite TLS_AES_256_GCM_SHA384 (256 bit)
Cipher version TLSv1.3
Perfect Forward Secrecy Attention
Earliest chain expiry 09.08.2026 01:59
Fingerprints
SHA-256 58:9D:C9:AC:29:76:CD:87:4C:D8:E0:69:F4:17:2A:53:DA:F7:72:6F:ED:67:D0:4B:3F:AC:AA:0B:BE:E9:C8:6A
SHA-1 3F:8F:8E:5B:93:A7:8F:01:DF:CD:61:B7:D4:47:15:BD:2C:A3:9D:2A
Revocation
OCSP URLs
http://ocsp.digicert.com
CRL URLs
Full Name: URI:http://crl3.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crl Full Name: URI:http://crl4.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crl
Issuer URLs (AIA)
http://cacerts.digicert.com/DigiCertGlobalG2TLSRSASHA2562020CA1-1.crt
OCSP Must-Staple No
Trust evaluation

Attempted: Yes

Trusted: Yes

OpenSSL diagnostic command
openssl s_client -connect heathrow.com:443 -servername heathrow.com

Result Detail

WAF
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  • Shield level Mythisch
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