53kf.com

We performed a comprehensive analysis of 53kf.com on 2026-06-29. The website returned an HTTP 200 status code with a server response time of 16592ms. The page is served over HTTP/1.1 protocol with Gzip compression enabled, achieving approximately 60.0% size reduction. The total page weight is 95 KB. The website uses a secure HTTPS connection with a valid SSL certificate issued by DigiCert Inc (OV type). The connection is encrypted using TLS 1.3 with the TLS_AES_256_GCM_SHA384 cipher suite and sha256WithRSAEncryption signature algorithm. The certificate covers 2 domain(s) (Subject Alternative Names) and expires on 2026-10-29, which is 122 days from now. The security headers analysis reveals a score of 0/100 (poor). No security headers are configured, which is a significant security concern. However, the site is missing Content-Security-Policy, Strict-Transport-Security (HSTS), X-Frame-Options, X-Content-Type-Options, Referrer-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 3 technologies across 3 categories powering 53kf.com. The detected stack includes Google Analytics 4, VWO, and jQuery 3.2.1.. Based on our comprehensive analysis of domain age, SSL configuration, email authentication, security headers, and blacklist status, 53kf.com receives an overall trust score of 65/100, classified as "Likely Safe".

After conducting a thorough safety and legitimacy analysis, 53kf.com receives a trust score of 65/100, 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, a valid SSL certificate issued by DigiCert Inc with 122 days until expiration, SPF (Sender Policy Framework) email authentication preventing email spoofing, DNSSEC providing authenticated DNS responses, and a well-established domain registered for over 20.7 years, indicating long-term commitment and legitimacy. Areas of concern include: the absence of a Content-Security-Policy header, which leaves the site more vulnerable to cross-site scripting (XSS) attacks, no X-Frame-Options header, which could allow the site to be embedded in malicious iframes (clickjacking), missing Referrer-Policy, potentially leaking URL information to third parties, and the domain's WHOIS information is hidden behind a privacy service, making it harder to verify the owner's identity. While these issues don't necessarily indicate malicious intent, they represent areas where the website's security posture could be improved. We checked 53kf.com 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. The domain is registered through Chengdu West Dimension Digital Technology Co., Ltd. based in CN, with a registration date of 2005-11-07 and expiration date of 2030-11-07.

Our technology detection engine scanned 53kf.com and identified 3 distinct technologies across 3 categories. This analysis is performed by examining HTTP response headers, HTML source code patterns, JavaScript library fingerprints, CSS framework signatures, and DNS records. Analytics: Google Analytics 4 — tracks visitor behavior and provides traffic insights for 53kf.com. A/B Testing: VWO — enables experimentation and conversion optimization for 53kf.com. JavaScript Library: jQuery (version 3.2.1.) — provides utility functions and DOM manipulation for 53kf.com.

53kf.com delivers its homepage in 16592ms (server response time), which is considered slow by industry standards. The total page weight is 95 KB, and we detected 213 resource requests loading assets from 16 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 4 CSS files and 2 out of 7 JavaScript files are minified. Minifying the remaining 9 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 53kf.com produces approximately 0.05g 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 95 KB is the primary factor in this calculation. Core Web Vitals data from the Chrome User Experience Report (CrUX) is not available for 53kf.com. 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.

53kf.com resolves to the IPv4 address 101.66.249.208, 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 2 name servers: vip3.alidns.com and vip4.alidns.com. Having 2 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 53kf.com is handled by 163.com with 1 MX records configured: mx.mail.ym.163.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 is not configured, leaving the domain vulnerable to email spoofing and phishing attacks that impersonate this domain. DKIM was not detected. Without DKIM, recipients cannot cryptographically verify that emails claiming to be from this domain are authentic. DNSSEC is enabled for 53kf.com, providing an additional layer of security by cryptographically signing DNS records. This prevents DNS cache poisoning and man-in-the-middle attacks that could redirect visitors to malicious websites. The domain is registered through Chengdu West Dimension Digital Technology Co., Ltd. (CN). It was first registered on 2005-11-07 and is set to expire on 2030-11-07, making it 20.7 years old. Our subdomain enumeration scan discovered 10 active subdomains for 53kf.com: admin.53kf.com, api.53kf.com, app.53kf.com, blog.53kf.com, cdn.53kf.com, dev.53kf.com, m.53kf.com, and mail.53kf.com. Plus 2 additional subdomains. Active subdomains can reveal the organization's infrastructure, including development environments, API endpoints, and third-party service integrations.

The homepage of 53kf.com contains 287 words of visible text content. This is a relatively short page — adding more descriptive content could improve search engine visibility. The page is structured with 20 H2 headings, 12 H3 headings, 0 H4 headings. The page includes 64 images. 36 images (56%) 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 44% of images have proper alt text — we recommend adding descriptive alt attributes to all images. The link structure consists of 68 internal links pointing to other pages on the same domain and 7 external links pointing to third-party websites. There are 7 external JavaScript files, 4 CSS stylesheets, and 0 iframes on the page. Notable missing features: XML Sitemap, robots.txt, and Schema.org structured data. Adding these could improve search engine discoverability and rich result eligibility.

The title tag for 53kf.com is well-optimized at 31 characters: "客服系统_在线客服系统_网站客服系统_智能客服系统【53快服】". The length falls within the ideal range for Google search results, ensuring the full title is displayed without truncation. The meta description is 88 characters (well-optimized): "53KF客服系统作为行业领先品牌。入口全渠道覆盖，界面外观高度自定义，客服全链路工作平台。智能机器人辅助接待，全维度数据分析报表，帮助企业提高销售额、提升留存率、减少人工成本。". 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. A favicon is configured. No Open Graph tags are configured. When someone shares a link to 53kf.com on social media, the platform will have to guess the title, description, and image — often producing unattractive or inaccurate previews. Adding OG tags is essential for social media marketing. The meta keywords tag contains 1 terms including 客服系统、在线客服、在线客服系统、智能客服机器人、网站客服系统、免费在线客服系统、网页聊天、在线客服工具、企业级客服软件、微信客服、快手抖音客服系统. Note: Google has officially confirmed that it does not use the meta keywords tag as a ranking signal. However, some other search engines (Bing, Yandex) may still reference it.