lentrance.com

We performed a comprehensive analysis of lentrance.com on 2026-06-30. The website returned an HTTP 200 status code with a server response time of 30396ms. The page is served over HTTP/2 protocol, however no compression (Gzip or Brotli) is enabled, which means the page is transferred at its full uncompressed size. The total page weight is 48 KB, and the site is served behind a CDN (Content Delivery Network). The website uses a secure HTTPS connection with a valid SSL certificate issued by Amazon (DV type). The connection is encrypted using TLS 1.3 with the TLS_AES_128_GCM_SHA256 cipher suite and sha256WithRSAEncryption signature algorithm. The certificate covers 2 domain(s) (Subject Alternative Names) and expires on 2027-01-02, which is 186 days from now. The security headers analysis reveals a score of 100/100 (excellent). The following security headers are properly configured: Content-Security-Policy, Strict-Transport-Security (HSTS), X-Frame-Options, X-Content-Type-Options, Referrer-Policy, and Permissions-Policy. All recommended security headers are in place, providing comprehensive protection against common web attacks. Our technology detection scan identified 4 technologies across 4 categories powering lentrance.com. The detected stack includes WordPress 6.5.8, Google Analytics 4, Google Fonts, and jQuery 3.2.1.. Based on our comprehensive analysis of domain age, SSL configuration, email authentication, security headers, and blacklist status, lentrance.com receives an overall trust score of 80/100, classified as "Very Likely Safe".

After conducting a thorough safety and legitimacy analysis, lentrance.com receives a trust score of 80/100, which places it in the "Very 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, a valid SSL certificate issued by Amazon with 186 days until expiration, SPF (Sender Policy Framework) email authentication preventing email spoofing, DMARC email authentication with a none policy, and a well-established domain registered for over 10.8 years, indicating long-term commitment and legitimacy. Areas of concern include: 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 lentrance.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 GMO Internet Group, Inc. d/b/a Onamae.com based in FI, with a registration date of 2015-10-09 and expiration date of 2026-10-09.

Our technology detection engine scanned lentrance.com and identified 4 distinct technologies across 4 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 6.5.8) — manages the content and page structure for lentrance.com. Analytics: Google Analytics 4 — tracks visitor behavior and provides traffic insights for lentrance.com. Fonts: Google Fonts — delivers web fonts for typography for lentrance.com. JavaScript Library: jQuery (version 3.2.1.) — provides utility functions and DOM manipulation for lentrance.com.

lentrance.com delivers its homepage in 30396ms (server response time), which is considered slow by industry standards. The total page weight is 48 KB, and we detected 146 resource requests loading assets from 3 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. No compression is currently enabled on lentrance.com. Enabling Brotli or Gzip compression could reduce page size by 60-80% for text-based assets (HTML, CSS, JavaScript), significantly improving load times and reducing bandwidth costs. This is one of the simplest and most impactful performance optimizations available. Asset minification status: 1 out of 5 CSS files and 4 out of 7 JavaScript files are minified. Minifying the remaining 7 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. The site is served through a Content Delivery Network (CDN), which caches static assets at edge servers around the world. This means visitors from different geographic regions receive content from the nearest edge server, significantly reducing latency. CDN usage is particularly important for websites with a global audience, as it can reduce page load times by 40-60% for distant visitors. From an environmental perspective, each page view of lentrance.com produces approximately 0.02g 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 48 KB is the primary factor in this calculation. Core Web Vitals data from the Chrome User Experience Report (CrUX) is not available for lentrance.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.

lentrance.com resolves to the IPv4 address 3.174.113.90 and also supports IPv6 (2600:9000:28f7:4200:17:ffb3:5500:93a1), demonstrating modern network infrastructure readiness. The domain has 4 A record(s) configured. The domain name system is managed by 4 name servers: ns-1126.awsdns-12.org, ns-1704.awsdns-21.co.uk, ns-316.awsdns-39.com, and ns-817.awsdns-38.net. 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 lentrance.com is handled by Google Workspace with 5 MX records configured: aspmx.l.google.com, alt1.aspmx.l.google.com, and alt2.aspmx.l.google.com and 2 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 none policy — a monitoring-only setting that doesn't enforce any action on unauthorized emails. DKIM was not detected. Without DKIM, recipients cannot cryptographically verify that emails claiming to be from this domain are authentic. DNSSEC is not enabled for lentrance.com. 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. The domain is registered through GMO Internet Group, Inc. d/b/a Onamae.com (FI). It was first registered on 2015-10-09 and is set to expire on 2026-10-09, making it 10.8 years old. Our subdomain enumeration scan discovered 1 active subdomains for lentrance.com: www.lentrance.com. Active subdomains can reveal the organization's infrastructure, including development environments, API endpoints, and third-party service integrations.

The homepage of lentrance.com contains 167 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 2 H2 headings, 3 H3 headings, 5 H4 headings, 10 H5, and 7 H6 headings. The page includes 59 images. 1 images (2%) 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 98% of images have proper alt text — we recommend adding descriptive alt attributes to all images. The link structure consists of 54 internal links pointing to other pages on the same domain and 6 external links pointing to third-party websites. There are 7 external JavaScript files, 5 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). Notable missing features: robots.txt and Schema.org structured data. Adding these could improve search engine discoverability and rich result eligibility.

The title tag for lentrance.com is good at 17 characters: "Lentrance（レントランス）". The length is acceptable, though it may be slightly truncated in some search result displays. The meta description is 125 characters (well-optimized): "Lentrance（レントランス）は、いつでも、どこでも、学びにアクセスできるICTプラットフォームです。デジタル教科書をはじめとする学校用教材の利用や通信教育・塾などの教育サービス、自宅学習など、一人ひとりの多様な学びをICTの力でサポー...". 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://www.lentrance.com/, preventing duplicate content issues, the page language is declared as ja, the meta robots directive is set to max-image-preview:large, and a favicon is configured. Open Graph meta tags are configured with 4/4 recommended fields: OG title ("Lentrance®(レントランス)..."), 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. The meta keywords tag contains 11 terms including Lentrance, レントランス, デジタル教科書, デジタル教材, and ICT教育. 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.