Guest session
Check Detail

wikipedia.com · DNS

Passed Grade A
100.0%
Hostname wikipedia.com
Check name DNS
last run 27/11/2025 21:32
Result
Incomplete Grade C 73.7%

Result Detail

DNS
Host Type Answer TTL
185.15.59.226 —
2a02:ec80:300:ed1a::3 —

Result Detail

HEADER
Alerts
  • Content-Security-Policy: Content-Security-Policy missing
  • X-Content-Type-Options: Header missing
  • X-Frame-Options: Header missing
  • Referrer-Policy: Header missing
  • Permissions-Policy: Permissions-Policy missing
  • Cross-Origin-Opener-Policy: Header missing
  • Cross-Origin-Embedder-Policy: Header missing
  • Cross-Origin-Resource-Policy: Header missing
  • Cache-Control: Cache-Control missing restrictive directives
  • Expect-CT: Expect-CT missing
  • X-Permitted-Cross-Domain-Policies: Header missing
  • Access-Control-Allow-Origin: Access-Control-Allow-Origin missing
  • Server: Sensitive header exposed
  • Origin-Agent-Cluster: Header missing
Normalized headers
server nginx/1.22.1
date Thu, 27 Nov 2025 20:32:59 GMT
content-type text/html
content-length 169
location https://www.wikipedia.org/
strict-transport-security max-age=106384710; includeSubDomains; preload
Transport
Check name Status Actual Expected Detail Severity Recommendation
Strict-Transport-Security ✅ Passed max-age=106384710; includeSubDomains; preload max-age>=15768000; includeSubDomains; preload HSTS policy robust 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 ❌ Missing default-src 'self'; frame-ancestors 'none' Content-Security-Policy missing Critical Content-Security-Policy: default-src 'self'; frame-ancestors 'none'
MIME
Check name Status Actual Expected Detail Severity Recommendation
X-Content-Type-Options ❌ Missing nosniff Header missing High X-Content-Type-Options: nosniff
Framing
Check name Status Actual Expected Detail Severity Recommendation
X-Frame-Options ❌ Missing DENY or SAMEORIGIN Header missing High X-Frame-Options: DENY
Privacy
Check name Status Actual Expected Detail Severity Recommendation
Referrer-Policy ❌ Missing strict-origin-when-cross-origin / same-origin Header missing Medium Referrer-Policy: strict-origin-when-cross-origin
Browser Features
Check name Status Actual Expected Detail Severity Recommendation
Permissions-Policy ❌ Missing camera=(); geolocation=(); microphone=() Permissions-Policy missing 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 ❌ Missing no-store, private, max-age=0 Cache-Control missing restrictive directives 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 ❌ Missing nginx/1.22.1 Header removed or generic Sensitive header 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/2 301 
server: nginx/1.22.1
date: Thu, 27 Nov 2025 20:32:59 GMT
content-type: text/html
content-length: 169
location: https://www.wikipedia.org/
strict-transport-security: max-age=106384710; includeSubDomains; preload

Result Detail

SSL
Check name Status Value
certificate chain is complete ✅ Passed 3
root CA is trusted ✅ Passed Trusted
cert valid for ✅ Passed 58
chain certs are valid until ✅ Passed 24.01.2026
CN matches Domainname ✅ Passed wikipedia.com
certificate subject ✅ Passed CN=wikipedia.com
certificate issuer ✅ Passed C=US, O=Let's Encrypt, CN=E8
signature algorithm ✅ Passed ecdsa-with-SHA384
TLS protocol ✅ Passed TLSv1.3 TLS_AES_256_GCM_SHA384
Subject Alternative Names ✅ Passed *.en-wp.com, *.en-wp.org, *.mediawiki.com, *.voyagewiki.com, *.voyagewiki.org, *.wiikipedia.com, *.wikibook.com, *.wikibooks.com, *.wikiepdia.com, *.wikiepdia.org, *.wikiipedia.org, *.wikijunior.com, *.wikijunior.net, *.wikijunior.org, *.wikipedia.com, en-wp.com, en-wp.org, mediawiki.com, voyagewiki.com, voyagewiki.org, wiikipedia.com, wikibook.com, wikibooks.com, wikiepdia.com, wikiepdia.org, wikiipedia.org, wikijunior.com, wikijunior.net, wikijunior.org, wikipedia.com
Public Key ✅ Passed EC 256
Certificate chain
# Common name Issuer Valid until CA
0 wikipedia.com C=US, O=Let's Encrypt, CN=E8 24.01.2026 21:22:20 No
1 wikipedia.com C=US, O=Let's Encrypt, CN=E8 24.01.2026 21:22:20 No
2 E8 C=US, O=Internet Security Research Group, CN=ISRG Root X1 13.03.2027 00:59:59 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 24.01.2026 21:22
Fingerprints
SHA-256 93:75:F0:8B:E5:24:45:E7:61:2B:57:28:C9:BE:15:A1:AF:AF:B6:0D:57:66:49:8E:72:3C:4E:29:D7:F6:9E:4E
SHA-1 76:FA:C6:4B:60:10:7F:05:77:CA:08:0B:28:EB:5B:49:7F:72:AE:3F
Revocation
OCSP URLs
—
CRL URLs
Full Name: URI:http://e8.c.lencr.org/36.crl
Issuer URLs (AIA)
http://e8.i.lencr.org/
OCSP Must-Staple No
Trust evaluation

Attempted: Yes

Trusted: Yes

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

Result Detail

WAF
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