4by4.ru

We performed a comprehensive analysis of 4by4.ru on 2026-06-28. The website returned an HTTP 200 status code with a server response time of 12879ms. The page is served over HTTP/2 protocol with Gzip compression enabled, achieving approximately 60.0% size reduction. The total page weight is 227 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 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 6 technologies across 6 categories powering 4by4.ru. The detected stack includes WordPress 7.0, Webpack, Meta Pixel, Google Fonts, jQuery, and Font Awesome. Based on our comprehensive analysis of domain age, SSL configuration, email authentication, security headers, and blacklist status, 4by4.ru receives an overall trust score of 63/100, classified as "Likely Safe".

After conducting a thorough safety and legitimacy analysis, 4by4.ru receives a trust score of 63/100, 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, SPF (Sender Policy Framework) email authentication preventing email spoofing, DMARC email authentication with a reject policy — the strongest available setting, 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, 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, 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 4by4.ru 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 4by4.ru and identified 6 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. CMS: WordPress (version 7.0) — manages the content and page structure for 4by4.ru. Build Tool: Webpack — bundles and optimizes the JavaScript and CSS assets for 4by4.ru. Advertising: Meta Pixel — handles advertising pixel tracking and conversion measurement for 4by4.ru. Fonts: Google Fonts — delivers web fonts for typography for 4by4.ru. JavaScript Library: jQuery — provides utility functions and DOM manipulation for 4by4.ru. Icon Set: Font Awesome — provides additional functionality for 4by4.ru. We also extracted the following tracking identifiers: Meta (Facebook) Pixel ID 919229788461509. These IDs can be used to identify other websites operated by the same organization.

4by4.ru delivers its homepage in 12879ms (server response time), which is considered slow by industry standards. The total page weight is 227 KB, and we detected 331 resource requests loading assets from 15 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: 35 out of 81 CSS files and 30 out of 39 JavaScript files are minified. Minifying the remaining 55 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 4by4.ru produces approximately 0.11g 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 227 KB is the primary factor in this calculation. Core Web Vitals data from the Chrome User Experience Report (CrUX) is not available for 4by4.ru. 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.

4by4.ru resolves to the IPv4 address 87.236.16.17, 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: kip.ns.cloudflare.com and mina.ns.cloudflare.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 4by4.ru is handled by Google Workspace with 8 MX records configured: aspmx.l.google.com, smtp.google.com, and alt1.aspmx.l.google.com and 5 more. 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 reject policy — the strongest setting, instructing receiving servers to reject unauthorized emails entirely. 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 4by4.ru. 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 1 active subdomains for 4by4.ru: www.4by4.ru. Active subdomains can reveal the organization's infrastructure, including development environments, API endpoints, and third-party service integrations.

The homepage of 4by4.ru contains 993 words of visible text content. This is a moderate amount of content. The page is structured with 20 H2 headings, 21 H3 headings, 0 H4 headings, 0 H5, and 2 H6 headings. The page includes 28 images. 28 images (100%) 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 0% of images have proper alt text — we recommend adding descriptive alt attributes to all images. The link structure consists of 157 internal links pointing to other pages on the same domain and 11 external links pointing to third-party websites. The high number of internal links suggests a well-interconnected site structure, which helps search engines discover and crawl all pages efficiently. There are 39 external JavaScript files, 81 CSS stylesheets, and 2 iframes on the page. The site implements the following web standards and features: XML Sitemap (helps search engines discover all pages), robots.txt (controls search engine crawling behavior), Schema.org structured data (BreadcrumbList, EntryPoint, ImageObject, ListItem, Organization, PropertyValueSpecification, ReadAction, SearchAction, WebPage, and WebSite), and RSS feed for content syndication. The website has social media presence across 1 platforms: Facebook (@4by4.ru). An active social media presence is a positive trust indicator and helps build brand awareness and customer engagement.

The title tag for 4by4.ru is good at 27 characters: "Системный интегратор 4х4 ИТ". The length is acceptable, though it may be slightly truncated in some search result displays. The meta description is 150 characters (well-optimized): "Компания 4х4 оказывает полный комплекс услуг в рамках построения и модернизации безопасной ИТ-инфраструктуры - от консал...". 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://4by4.ru/, preventing duplicate content issues, the page language is declared as ru-ru, the meta robots directive is set to index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1, and a favicon is configured. Open Graph meta tags are configured with 4/4 recommended fields: OG title ("Системный интегратор 4х4..."), OG description, OG image (social sharing thumbnail), OG type (website). 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. The site implements Schema.org structured data with the following types: BreadcrumbList, EntryPoint, ImageObject, ListItem, Organization, PropertyValueSpecification, ReadAction, SearchAction, WebPage, and WebSite. Structured data helps search engines understand the page content and can enable rich results (featured snippets, knowledge panels, star ratings) in Google search results, which can significantly increase click-through rates.