tdc.dk

We performed a comprehensive analysis of tdc.dk on 2026-06-28. The website returned an HTTP 200 status code with a server response time of 19608ms. The page is served over HTTP/2 protocol with Gzip compression enabled, achieving approximately 60.0% size reduction. The total page weight is 270 KB. Warning: The website does not have a valid SSL certificate. Visitors may see security warnings in their browser, and data transmitted to and from this website is not encrypted. The security headers analysis reveals a score of 65/100 (moderate). The following security headers are properly configured: Strict-Transport-Security (HSTS), X-Frame-Options, X-Content-Type-Options, and Referrer-Policy. However, the site is missing Content-Security-Policy and Permissions-Policy, which could expose the site and its users to cross-site scripting (XSS), clickjacking, and other web-based attacks. Our technology detection scan identified 7 technologies across 6 categories powering tdc.dk. The detected stack includes Gatsby, React, Webpack, Vite, Google Analytics 4, Google Tag Manager, and Netlify. The site uses Gatsby as its primary framework. The UI is built with React. Based on our comprehensive analysis of domain age, SSL configuration, email authentication, security headers, and blacklist status, tdc.dk receives an overall trust score of 75/100, classified as "Likely Safe".

After conducting a thorough safety and legitimacy analysis, tdc.dk receives a trust score of 75/100, which places it in the "Likely Safe" category. This score is calculated by evaluating multiple factors including SSL certificate validity, domain registration history, email authentication protocols, security header configuration, and blacklist status across major threat intelligence databases. The analysis identified several positive trust signals: a valid HTTPS connection protecting data in transit, HSTS (HTTP Strict Transport Security) enforcement preventing protocol downgrade attacks, SPF (Sender Policy Framework) email authentication preventing email spoofing, DMARC email authentication with a none policy, and DKIM (DomainKeys Identified Mail) providing cryptographic email verification. Areas of concern include: the absence of a Content-Security-Policy header, which leaves the site more vulnerable to cross-site scripting (XSS) attacks, the domain's WHOIS information is hidden behind a privacy service, making it harder to verify the owner's identity, and DNSSEC is not enabled, leaving DNS queries vulnerable to spoofing attacks. While these issues don't necessarily indicate malicious intent, they represent areas where the website's security posture could be improved. We checked tdc.dk against 8 major blacklist databases including Google Safe Browsing, Phishtank, Urlhaus, Openphish, Dnsfilter, Spamhaus Dbl, Surbl, and Virustotal. The domain passed all 8 checks with a clean status, meaning it has not been flagged for phishing, malware distribution, spam, or other malicious activities by any of the tested threat intelligence providers.

Our technology detection engine scanned tdc.dk and identified 7 distinct technologies across 6 categories. This analysis is performed by examining HTTP response headers, HTML source code patterns, JavaScript library fingerprints, CSS framework signatures, and DNS records. Framework: Gatsby — provides the application framework and routing for tdc.dk. UI Library: React — handles the user interface rendering and component management for tdc.dk. Build Tool: Webpack and Vite — bundles and optimizes the JavaScript and CSS assets for tdc.dk. Analytics: Google Analytics 4 — tracks visitor behavior and provides traffic insights for tdc.dk. Tag Manager: Google Tag Manager — manages marketing and analytics tags without code changes for tdc.dk. Hosting: Netlify — provides the server infrastructure for tdc.dk. We also extracted the following tracking identifiers: Google Tag Manager container GTM-MWNTJ5ZD. These IDs can be used to identify other websites operated by the same organization.

tdc.dk delivers its homepage in 19608ms (server response time), which is considered slow by industry standards. The total page weight is 270 KB, and we detected 131 resource requests loading assets from 10 third-party domains. A high number of third-party domains can significantly impact page load time due to additional DNS lookups and TLS handshakes required for each domain. The website uses Gzip compression for text-based assets, achieving an estimated 60.0% reduction in transfer size. This reduces bandwidth usage and improves page load times, especially for visitors on slower connections. Asset minification status: 0 out of 0 CSS files and 1 out of 6 JavaScript files are minified. Minifying the remaining 5 unminified file(s) could further reduce page weight by 10-30% for those assets. Minification is a best practice that reduces download sizes without affecting functionality. From an environmental perspective, each page view of tdc.dk produces approximately 0.13g of CO₂, earning a carbon rating of A. This places the website among the cleanest on the web, demonstrating efficient use of server resources and optimized content delivery. For reference, the average web page produces about 0.5g of CO₂ per page view. The page weight of 270 KB is the primary factor in this calculation. Core Web Vitals data from the Chrome User Experience Report (CrUX) is not available for tdc.dk. This typically means the site doesn't have enough real-world Chrome user traffic to generate statistically significant field data, or the domain is not included in the CrUX dataset. Core Web Vitals (LCP, INP, CLS) are important Google ranking factors that measure real user experience.

tdc.dk resolves to the IPv4 address 75.2.60.5, but does not support IPv6. IPv6 adoption is increasingly important as IPv4 address space becomes exhausted, and some ISPs and regions are transitioning to IPv6-only connectivity. The domain has 1 A record(s) configured. The domain name system is managed by 4 name servers: ns-a.eurodns.com, ns-b.eurodns.org, ns-c.eurodns.eu, and ns-d.eurodns.biz. Having 4 name servers provides good redundancy — if one fails, the others can continue serving DNS queries. The choice of name servers often indicates the DNS hosting provider or CDN service being used. Email for tdc.dk is handled by pphosted.com with 2 MX records configured: mxa-00360101.gslb.pphosted.com and mxb-00360101.gslb.pphosted.com. Multiple MX records provide failover redundancy — if the primary mail server is unavailable, email will be routed to the next available server. SPF (Sender Policy Framework) is configured, which specifies which mail servers are authorized to send email on behalf of this domain. This helps prevent email spoofing and improves email deliverability. DMARC (Domain-based Message Authentication, Reporting and Conformance) is configured with a none policy — a monitoring-only setting that doesn't enforce any action on unauthorized emails. DKIM (DomainKeys Identified Mail) is configured, adding a cryptographic signature to outgoing emails that receiving servers can verify to confirm the email hasn't been tampered with in transit. DNSSEC is not enabled for tdc.dk. While not critical for most websites, DNSSEC adds an important security layer by ensuring DNS responses haven't been tampered with during transit. Enabling DNSSEC is recommended for domains handling sensitive data or financial transactions. Our subdomain enumeration scan discovered 7 active subdomains for tdc.dk: app.tdc.dk, m.tdc.dk, mail.tdc.dk, portal.tdc.dk, shop.tdc.dk, staging.tdc.dk, and www.tdc.dk. Active subdomains can reveal the organization's infrastructure, including development environments, API endpoints, and third-party service integrations.

The homepage of tdc.dk contains 1,466 words of visible text content. This is a substantial amount of content that provides good opportunities for search engine indexing. The page is structured with 13 H2 headings, 0 H3 headings, 0 H4 headings, 1 H5, and 53 H6 headings. The page includes 10 images. 6 images (60%) are missing alt text attributes, which is a significant concern for both accessibility and SEO. Screen readers rely on alt text to describe images to visually impaired users, and search engines use alt text to understand image content. Only 40% of images have proper alt text — we recommend adding descriptive alt attributes to all images. The link structure consists of 90 internal links pointing to other pages on the same domain and 13 external links pointing to third-party websites. There are 6 external JavaScript files, 0 CSS stylesheets, and 0 iframes on the page. The site implements the following web standards and features: XML Sitemap (helps search engines discover all pages) and Progressive Web App (PWA) manifest (enabling app-like installation). Notable missing features: robots.txt and Schema.org structured data. Adding these could improve search engine discoverability and rich result eligibility. The website has social media presence across 3 platforms: Facebook (@TDCErhvervDK), Instagram (@tdc_erhverv), and Linkedin (@tdcerhverv). An active social media presence is a positive trust indicator and helps build brand awareness and customer engagement.

The title tag for tdc.dk is good at 11 characters: "TDC Erhverv". The length is acceptable, though it may be slightly truncated in some search result displays. The meta description is 11 characters (acceptable): "TDC Erhverv". Google typically displays up to 155-160 characters of the meta description in search results. A compelling meta description with a clear call-to-action can significantly improve click-through rates from search results. The canonical url is correctly set to https://tdc.dk/, preventing duplicate content issues, the page language is declared as da, the meta robots directive is set to all, and a favicon is configured. Open Graph meta tags are configured with 3/4 recommended fields: OG title ("TDC Erhverv..."), OG description, OG image (social sharing thumbnail), These tags control how the page appears when shared on Facebook, LinkedIn, and other social media platforms that support the Open Graph protocol. A Twitter Card of type summary_large_image is configured, which controls how links appear when shared on Twitter/X. The "summary_large_image" type displays a large image preview, which typically generates higher engagement rates than the basic card type.