# BeaverCheck Audit Report — https://denic.de **Date:** April 22, 2026 **URL:** https://denic.de **Overall Grade:** C (74/100) **Report:** https://beavercheck.com/results/2aee1a53-7f2d-4940-901c-bb7b8d274a6c ## Top Findings 1. **[CRITICAL]** Content-Security-Policy header is missing — Security > Security Headers 2. **[CRITICAL]** HSTS header is missing — Security > Security Headers 3. **[CRITICAL]** No Content-Security-Policy header found — Security > Content Security Policy 4. **[CRITICAL]** Page weighs 14.3 MB (13.6 MB transferred) — Performance > Page Weight Budget 5. **[CRITICAL]** 3 button(s) with no accessible text — Accessibility > Link & Button Quality --- ## Lighthouse Scores | Category | Score | |----------|-------| | Performance | 85 | | Accessibility | 96 | | Best Practices | 100 | | SEO | 100 | --- ## Security ### Security Headers (F — 10/100) *2 of 10 headers properly configured* - **[CRITICAL]** HSTS header is missing — Strict-Transport-Security forces browsers to use HTTPS, preventing downgrade attacks. Add the header with a max-age of at least 1 year. - **[WARNING]** X-Content-Type-Options header is missing — This header prevents MIME-type sniffing, which can lead to XSS attacks. Set it to 'nosniff'. - **[WARNING]** X-Frame-Options header is missing — This header prevents clickjacking by controlling who can embed your page in a frame. Set it to DENY or SAMEORIGIN. - **[WARNING]** Referrer-Policy header is missing — Controls how much referrer information is sent with requests. Set to 'strict-origin-when-cross-origin' or stricter. - **[WARNING]** Permissions-Policy header is missing — Controls which browser features (camera, microphone, geolocation) are allowed. Set it to restrict unused features. - **[CRITICAL]** Content-Security-Policy header is missing — CSP is the most important header for preventing XSS attacks. See the CSP section for detailed analysis. - **[WARNING]** Cross-Origin-Opener-Policy header is missing — COOP isolates your browsing context, preventing cross-origin side-channel attacks. Set to 'same-origin'. - **[WARNING]** Cross-Origin-Embedder-Policy header is missing — COEP prevents loading cross-origin resources without explicit permission. Required for SharedArrayBuffer and high-resolution timers. - **[PASS]** X-Powered-By header is not present - **[PASS]** Server header is present without version info ### Content Security Policy (F — 0/100) *No enforcing CSP policy found* - **[CRITICAL]** No Content-Security-Policy header found — CSP is the most effective defense against XSS attacks. Add a Content-Security-Policy header to restrict resource loading. ### TLS & Certificates (A+ — 100/100) *TLS 1.3, 7 checks passed* - **[PASS]** TLS 1.3 is used - **[PASS]** Strong cipher suite is used - **[INFO]** HTTP/2 is not negotiated — HTTP/2 provides multiplexing and header compression for better performance. - **[PASS]** Certificate is valid (expires in 63 days) - **[PASS]** Certificate chain has 2 certificates - **[PASS]** Certificate uses modern signature algorithm - **[PASS]** Certificate covers 92 domain(s) - **[PASS]** Certificate is issued by a trusted CA ### Cookie Security (A+ — 100/100) *No cookies set — no cookie security risks* - **[PASS]** No cookies set — no cookie security risks --- ## Advanced Security ### Subresource Integrity (F — 20/100) *0 of 2 external resources have SRI* - **[WARNING]** External link from www.denic.de lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. - **[WARNING]** External script from www.denic.de lacks integrity attribute — Without SRI, if this CDN is compromised, attackers could inject malicious code. ### JS Library Vulnerabilities (A+ — 100/100) *No known vulnerabilities* - **[PASS]** No known JavaScript library vulnerabilities detected ### Information Leakage (A+ — 100/100) *No exposures* - **[PASS]** security.txt is present — good practice - **[PASS]** No sensitive files exposed ### Email Security (A+ — 100/100) *DMARC: reject* - **[PASS]** DMARC policy is reject — strongest protection ### Permissions-Policy (D — 40/100) *No header set* - **[WARNING]** No Permissions-Policy header — Consider adding a Permissions-Policy header to restrict browser feature access from embedded content. ### CORS Configuration (B — 80/100) *No CORS headers* - **[PASS]** No CORS headers present — secure default --- ## Performance ### Page Weight Budget (F — 0/100) *13.6 MB transferred, 44 requests* - **[CRITICAL]** Page weighs 14.3 MB (13.6 MB transferred) - **[PASS]** 44 HTTP requests - **[INFO]** Estimated 2.8 g CO2 per page load ### Third-Party Impact (D — 50/100) *100% third-party, 0 ms blocking* - **[WARNING]** Third-party code accounts for 100% of page weight (13.6 MiB of 13.6 MiB) - **[PASS]** Third-party blocking time is low (0 ms) ### Text Compression (A+ — 100/100) *All text resources are compressed* - **[PASS]** All text resources are compressed ### Image Optimization (C — 60/100) *24 images, 0 KB saveable* - **[WARNING]** https://www.denic.de/_assets/d0d26efed57d317ec4497... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://www.denic.de/_assets/d0d26efed57d317ec4497... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. - **[WARNING]** https://blog.denic.de/content/images/2025/11/blog-... is missing width/height — may cause layout shift — Set explicit width and height to prevent CLS. ### JS Execution Cost (C — 60/100) *1541ms total JS execution* - **[WARNING]** Unattributable: 745ms CPU time - **[WARNING]** https://www.denic.de/: 513ms CPU time - **[INFO]** https://www.denic.de/_assets/d0d26efed57d317ec4497...: 124ms CPU time - **[INFO]** https://www.denic.de/_assets/d0d26efed57d317ec4497...: 82ms CPU time - **[INFO]** https://www.denic.de/fileadmin/_static/assets/cook...: 77ms CPU time - **[WARNING]** Third-party scripts: 1541ms (100% of total) ### Font Loading (A+ — 100/100) *7 fonts (86 KB)* - **[INFO]** 7 font(s) use font-display: swap (FOUT risk but functional) ### JS Bundles (A+ — 100/100) *5 scripts, 21 KB unused* - **[WARNING]** https://www.denic.de/_assets/d0d26efed57d317ec4497...: 21 KB unused (87%) — Consider code splitting or tree shaking to reduce unused code. - **[INFO]** Total unused JavaScript: 21 KB ### Resource Caching (A+ — 100/100) *All resources properly cached* - **[PASS]** No caching issues found ### Critical Rendering Path (A+ — 100/100) *No render-blocking resources* - **[PASS]** No render-blocking resources detected ### Resource Hints (A+ — 100/100) *No optimization needed* - **[PASS]** No resource hint issues ### Page Weight Inventory (D — 45/100) *44 resources · 13.6 MB · 21 KB savings available* - **[WARNING]** Page weight 12.6 MB over 1MB target - **[WARNING]** 43 third-party resources (100% of weight) - **[INFO]** 3 resources over 200KB ### Render-Blocking Resources (A+ — 100/100) *No render-blocking resources detected* - **[PASS]** No render-blocking resources detected in ### Third-Party Resources (A+ — 100/100) *No third-party resources detected* --- ## Content Quality ### Links (F — 40/100) *95 links checked, 62 healthy, 33 broken* - **[CRITICAL]** 62 of 95 links are healthy - **[WARNING]** Broken link: https://www.denic.de/ — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://denic.de/produkte/statistiken-rund-um-de/ — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://denic.de/produkte/de-domains/idn-domains/ — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://denic.de/ueber-uns/informationssicherheit/ — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://denic.de/kontakt/ — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://denic.de/ueber-uns/rechtliches-zu-denic/ — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://denic.de/ueber-uns/taetigkeitsberichte/ — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://denic.de/ueber-uns/organe-und-gremien/ — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://denic.de/ueber-uns/unsere-mitglieder/ — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://denic.de/ueber-uns/denic-geschichte/ — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://denic.de/faq/top-10-faq/ — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://denic.de/faq/allgemeine-faqs/ — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://denic.de/faq/faqs-zu-dnssec/ — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://denic.de/faq/faqs-fuer-domainanmelder/ — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://denic.de/faq/faqs-fuer-interessenten-an-einer-reg... — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://denic.de/faq/faqs-zu-rechtsthemen/ — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://denic.de/faq/faqs-zu-transit/ — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://denic.de/faq/faqs-zu-idn-domains-ss/ — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://denic.de/faq/faqs-fuer-denicdirect-kunden/ — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://denic.de/news/presse/ — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://denic.de/news/mailinglisten/ — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://denic.de/news/presse/aktuelle-domainstatistik/ — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://denic.de/en/ — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://transit.secure.denic.de/ — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://denic.de/produkte/inhaberdatenverifizierung/ — Found in . Returns HTTP 429. - **[WARNING]** Broken link: https://denic.de/fileadmin/_processed_/8/d/csm_denic-karr... — Found in . Returns HTTP 429. - **[WARNING]** Broken link: https://www.denic.de/fileadmin/Grafiken_Bilder/Personen/d... — Found in . Returns HTTP 429. - **[WARNING]** Broken link: https://www.denic.de/fileadmin/_processed_/2/b/csm_denic-... — Found in . Returns HTTP 429. - **[WARNING]** Broken link: https://www.denic.de/fileadmin/_processed_/2/8/csm_denic-... — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://denic.de/domainbedingungen/ — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://denic.de/domainrichtlinien/ — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://denic.de/preisliste/ — Found in . Returns HTTP 429. - **[CRITICAL]** Broken link: https://denic.de/impressum/ — Found in . Returns HTTP 429. ### Mixed Content (A+ — 100/100) *No mixed content detected — all resources use HTTPS.* - **[PASS]** No mixed content detected — all resources use HTTPS ### Open Graph (B — 85/100) *Open Graph tags are partially configured — some improvements recommended.* - **[INFO]** Missing og:url — The og:url tag specifies the canonical URL for the shared content. - **[INFO]** Missing og:type — The og:type tag helps social platforms categorize the content. - **[INFO]** Missing og:site_name — The og:site_name tag displays the website name in social previews. ### Structured Data (C — 40/100) *No structured data (JSON-LD) found.* - **[INFO]** No structured data (JSON-LD) found — Adding structured data helps search engines understand your content and can enable rich results. --- ## Infrastructure ### DNS Records (A+ — 95/100) *1 A records, 65 ms lookup* - **[PASS]** Resolves to 1 IPv4 address(es) - **[INFO]** Single A record — no DNS redundancy — Multiple A records provide failover if one server goes down. - **[INFO]** No IPv6 (AAAA) records - **[PASS]** 4 nameserver(s) configured - **[PASS]** 3 mail exchanger(s) configured - **[INFO]** CAA records not checked — CAA record lookup requires a specialized DNS resolver. This check will be available in a future update. - **[PASS]** SPF record present in TXT - **[PASS]** DNS resolution time: 65 ms ### Redirect Chain (A — 90/100) *1 redirect(s), 261 ms total* - **[PASS]** Single redirect - **[INFO]** WWW normalization redirect ### IPv6 Readiness (C — 60/100) *No IPv6 support* - **[INFO]** No IPv6 (AAAA) records found — IPv6 support is increasingly important for global accessibility. About 40% of internet users have IPv6 connectivity. ### Crawlability (A — 90/100) *no robots.txt, sitemap with 1 URLs* - **[INFO]** No robots.txt found — robots.txt is optional but recommended. It tells search engine crawlers which pages to index. - **[PASS]** sitemap.xml is present - **[PASS]** sitemap.xml is valid XML - **[PASS]** sitemap.xml contains 1 entries - **[PASS]** Sitemap index with 1 child sitemaps ### URL Variants (B — 75/100) *www/non-www, trailing slash, HTTP→HTTPS* - **[CRITICAL]** Both www and non-www versions serve content - **[PASS]** HTTP correctly 301-redirects to HTTPS ### Domain Intelligence (A+ — 100/100) *denic.de — hosted on DENIC-AS Theodor-Stern-Kai 1, DE* - **[WARNING]** Registrar lock is NOT enabled — The domain can be transferred without an unlock step. Enable registrar lock (clientTransferProhibited) in your registrar's control panel to protect against unauthorized or accidental transfers. - **[PASS]** Hosting: DENIC-AS Theodor-Stern-Kai 1, DE --- ## Compliance ### WCAG Compliance (A+ — 100/100) *No testable criteria* ### Cookie Consent & Privacy (A+ — 95/100) *privacy policy found* - **[PASS]** Privacy policy link found - **[INFO]** No terms of service link detected - **[INFO]** No cookie consent banner detected - **[INFO]** This is an automated check, not legal advice — BeaverCheck detects technical indicators of consent management. This does not constitute a legal compliance assessment. Consult a privacy professional for GDPR/CCPA compliance. ### Language & i18n (A — 90/100) *Lang attribute present* - **[PASS]** attribute is present - **[PASS]** value is valid - **[INFO]** No Content-Language HTTP header - **[INFO]** Language signals are inconsistent — The attribute and Content-Language header should agree. ### Readability & Typography (A+ — 100/100) *Font sizes and tap targets checked* ### Viewport Configuration (A+ — 100/100) *Viewport properly configured* - **[PASS]** Viewport meta tag is present - **[PASS]** width=device-width is set - **[PASS]** User zooming is allowed ### Third-Party Trackers (A+ — 95/100) *1 trackers detected* - **[INFO]** 1 third-party trackers detected — Found 1 analytics, 0 advertising, 0 marketing, 0 tag manager trackers. ### Cookie & Tracker Inventory (A+ — 100/100) *0 cookies · 1 trackers · 0 pre-consent* - **[INFO]** 1 third-party tracker(s) detected on page --- ## Legal ### Legal Page Ecosystem (F — 30/100) *1 of 7 expected legal pages detected* - **[PASS]** Privacy Policy detected — Found at /datenschutzerklaerung/?disableOptIn=1&cHash=bfd3634bb46f0e25bccad43c686f9199. - **[WARNING]** Terms of Service not detected — No link matching common Terms of Service URL patterns or link text was found. Most websites are expected to have a Terms of Service, especially those collecting user data. - **[INFO]** Cookie Policy not detected — No link matching common Cookie Policy URL patterns or link text was found. Most websites are expected to have a Cookie Policy, especially those collecting user data. - **[INFO]** Accessibility Statement not detected — No link matching common Accessibility Statement URL patterns or link text was found. Most websites are expected to have a Accessibility Statement, especially those collecting user data. - **[INFO]** DMCA / Copyright Notice not detected — No link matching common DMCA / Copyright Notice URL patterns or link text was found. Most websites are expected to have a DMCA / Copyright Notice, especially those collecting user data. - **[INFO]** Refund / Returns Policy not detected — No link matching common Refund / Returns Policy URL patterns or link text was found. Most websites are expected to have a Refund / Returns Policy, especially those collecting user data. - **[INFO]** Acceptable Use Policy not detected — No link matching common Acceptable Use Policy URL patterns or link text was found. Most websites are expected to have a Acceptable Use Policy, especially those collecting user data. ### Copyright Notice (C — 55/100) *No copyright notice detected* - **[INFO]** No copyright notice detected — No copyright notice detected in the page content. While not legally required in most jurisdictions (copyright exists automatically), a notice is standard practice and signals site ownership. ### Regulatory Indicators *1 regulatory indicator(s) detected* - **[INFO]** This is a technical scan, not a legal assessment — BeaverCheck detects technical indicators that may suggest regulatory relevance. This is not a compliance audit and should not be relied upon for legal decisions. Consult qualified legal counsel for compliance assessments. - **[INFO]** GDPR indicators detected (strong confidence) — Indicators suggesting GDPR may be relevant: European TLD detected: .de; Privacy policy page found. EU General Data Protection Regulation — governs collection and processing of personal data of EU residents. ### Third-Party Data Sharing *0 third-party service(s) detected* - **[INFO]** Data inventory for transparency purposes — This inventory identifies third-party services that receive data from your site visitors. Under regulations like GDPR (Article 30), maintaining records of data processing activities is commonly considered a best practice. This automated scan provides a starting point — it may not capture all data flows. - **[INFO]** No recognized third-party data-sharing services detected — This page does not appear to load external tracking, analytics, or advertising scripts. ### Compliance Badges (B — 70/100) *1 compliance badge(s) detected* - **[PASS]** ISO 27001 badge detected — Found via image alt text: 'iso 27001'. Note: the presence of a badge does not verify the certification is current or valid. --- ## Availability ### CDN & Delivery (D — 50/100) *No CDN detected* - **[WARNING]** No CDN detected — A CDN can significantly improve load times for users around the world by caching content at edge nodes closer to them. ### HTTP Caching (F — 30/100) *No cache headers* - **[WARNING]** No Cache-Control header found — Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers. ### Transport Security (B — 75/100) *HTTP/3, HSTS, and TLS version analysis* - **[INFO]** HTTP/3 (QUIC) not advertised — HTTP/3 eliminates head-of-line blocking. If your CDN supports it, consider enabling it. - **[WARNING]** Missing Strict-Transport-Security header — HSTS tells browsers to only use HTTPS, preventing SSL stripping attacks. - **[PASS]** TLS 1.3 in use (fastest handshake, 1-RTT) --- ## Accessibility ### Landmark Structure (A — 85/100) *11 landmarks* - **[PASS]**
landmark present - **[PASS]** 2