s.to Website Overview & Technology Report
🤖 AI Summary
We performed a comprehensive analysis of s.to on 2026-06-28. The website returned an HTTP 200 status code with a server response time of 20229ms. The page is served over HTTP/2 protocol with Gzip compression enabled, achieving approximately 60.0% size reduction. The total page weight is 407 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 40/100 (below average). The following security headers are properly configured: Content-Security-Policy and Strict-Transport-Security (HSTS). However, the site is missing 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 4 technologies across 4 categories powering s.to. The detected stack includes React, Google Analytics 4, Cloudflare, and Google Fonts. The UI is built with React.
Based on our comprehensive analysis of domain age, SSL configuration, email authentication, security headers, and blacklist status, s.to receives an overall trust score of 70/100, classified as "Likely Safe".
HTTP Response
Status200 OK
Response Time20229ms
ProtocolHTTP/2
Page Size407 KB
CompressionGzip
Compression Savings~60.0%
CDNNo
Serverddos-guard
Total Requests600
3rd Party Domains11
RedirectNone
Detected Technologies (4)
⚛️ React
📊 Google Analytics 4
☁️ Cloudflare
🔤 Google Fonts
Security Headers
✓
Content-Security-Policy
Set ✓
✓
Strict-Transport-Security (HSTS)
Set ✓
✗
X-Frame-Options
Not set
✗
X-Content-Type-Options
Not set
✗
Referrer-Policy
Not set
✗
Permissions-Policy
Not set
SSL Certificate
IssuerLet's Encrypt
Issuer FullcountryName=US, organizationName=Let's Encrypt, commonName=R13
SubjectcommonName=s.to
Type—
TLS VersionTLS 1.3
Cipher SuiteTLS_AES_128_GCM_SHA256
Algorithm—
Issued—
Expires— (? days)
SANs—
s.to Trust Score & Safety Analysis
🤖 AI Summary
After conducting a thorough safety and legitimacy analysis, s.to receives a trust score of 70/100, 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: 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 s.to 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.
Trust Signals
✅ Valid HTTPS
✅ HSTS enabled
✅ SPF configured
✅ DMARC configured (p=none)
✅ DKIM configured
⚠️ DNSSEC not enabled
⚠️ Missing X-Frame-Options
⚠️ Missing Referrer-Policy
Blacklist Checks (8/8 clean)
✓
Google Safe Browsing
clean
✓
Phishtank
clean
✓
Urlhaus
clean
✓
Openphish
clean
✓
Dnsfilter
clean
✓
Spamhaus Dbl
clean
✓
Surbl
clean
✓
Virustotal
clean
s.to Technology Stack & Detected Technologies
🤖 AI Summary
Our technology detection engine scanned s.to 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.
UI Library: React — handles the user interface rendering and component management for s.to.
Analytics: Google Analytics 4 — tracks visitor behavior and provides traffic insights for s.to.
CDN: Cloudflare — accelerates content delivery by caching assets at edge locations worldwide for s.to.
Fonts: Google Fonts — delivers web fonts for typography for s.to.
We also extracted the following tracking identifiers: Google Analytics 4 Measurement ID G-1776990615. These IDs can be used to identify other websites operated by the same organization.
UI Library
Analytics
📊 Google Analytics 4(95%)
CDN
Fonts
Tracking IDs
s.to Performance, Speed & Core Web Vitals
🤖 AI Summary
s.to delivers its homepage in 20229ms (server response time), which is considered slow by industry standards. The total page weight is 407 KB, and we detected 600 resource requests loading assets from 11 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 6 CSS files and 0 out of 6 JavaScript files are minified. Minifying the remaining 12 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 s.to produces approximately 0.2g of CO₂, earning a carbon rating of B. 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 407 KB is the primary factor in this calculation.
Core Web Vitals data from the Chrome User Experience Report (CrUX) is not available for s.to. 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.
Core Web Vitals data not available
Requires CrUX API key configuration
Carbon Footprint
CO₂ per page view0.2g
RatingB
Page Weight & Optimization
HTML Size407 KB
CompressionGzip
Compression Savings~60.0%
CDNNo
Total Requests600
3rd Party Domains11
CSS Minified0/6
JS Minified0/6
s.to DNS Records, Email Authentication & Domain Registration
🤖 AI Summary
s.to resolves to the IPv4 address 186.2.163.237, 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: jack.ns.cloudflare.com and megan.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 s.to is handled by mail.ru with 1 MX records configured: emx.mail.ru. 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 s.to. 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 s.to: www.s.to. Active subdomains can reveal the organization's infrastructure, including development environments, API endpoints, and third-party service integrations.
DNS Records
NS
jack.ns.cloudflare.com
megan.ns.cloudflare.com
Email & Authentication
MX Providermail.ru
Registrar—
Organisation—
Country—
Contact—
Registered—
Expires—
Domain Age—
IPv6 SupportNo
Subdomains (1 found)
s.to Page Content, Images & Accessibility
🤖 AI Summary
The homepage of s.to contains 1,298 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 14 H2 headings, 58 H3 headings, 17 H4 headings, 6 H5, and 6 H6 headings.
The page includes 134 images. 14 images (10%) 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 90% of images have proper alt text — we recommend adding descriptive alt attributes to all images.
The link structure consists of 289 internal links pointing to other pages on the same domain and 19 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 6 external JavaScript files, 6 CSS stylesheets, and 0 iframes on the page.
The site implements the following web standards and features: Schema.org structured data (WebSite) and Progressive Web App (PWA) manifest (enabling app-like installation).
Notable missing features: XML Sitemap and robots.txt. Adding these could improve search engine discoverability and rich result eligibility.
We detected the following payment methods accepted on s.to: Discover. Offering multiple payment options including credit cards and digital wallets improves customer trust and can increase conversion rates.
Content Structure
H1—
H2 Tags14
H3 Tags58
H4 Tags17
H5 Tags6
H6 Tags6
Internal Links289
External Links19
Assets & Features
JavaScript Files6
JS Minified0/6
CSS Files6
CSS Minified0/6
Iframes0
Images134
Missing Alt14
SitemapNo
Robots.txtNo
PWAYes ✓
AMPNo
RSS FeedNo
Schema.org Types
Payment Methods Detected
s.to SEO Analysis, Meta Tags & Open Graph
🤖 AI Summary
The title tag for s.to is good at 70 characters: "Serien Online gratis ansehen & streamen - Kostenloses Streaming | S.to". The length is acceptable, though it may be slightly truncated in some search result displays.
The meta description is 132 characters (well-optimized): "Streame 10.000 TV-Serien online kostenlos. Schaue neueste Episoden, entdecke neue Serien und erkunde unsere umfangreiche...". 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 /, preventing duplicate content issues, the page language is declared as de, the meta robots directive is set to index, follow, and a favicon is configured.
Open Graph meta tags are configured with 4/4 recommended fields: OG title ("Serien Online gratis ansehen & streamen - Kostenloses Stream..."), 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 site implements Schema.org structured data with the following types: 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.
The meta keywords tag contains 6 terms including serien online anschauen, kostenloses streaming, tv serien, episoden, and serien kostenlos anschauen. 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.
Google SERP Preview
Serien Online gratis ansehen & streamen - Kostenloses Streaming | S.to
https://s.to
Streame 10.000 TV-Serien online kostenlos. Schaue neueste Episoden, entdecke neue Serien und erkunde unsere umfangreiche Bibliothek.
Meta Tags
TitleSerien Online gratis ansehen & streamen - Kostenloses Stream...
Title Length70 chars
Meta Desc Length132 chars
H1—
Languagede
Canonical/
Meta Robotsindex, follow
Meta Keywordsserien online anschauen, kostenloses streaming, tv serien, e...
Schema.org & Social
Schema TypesWebSite
OG Typewebsite
OG ImageSet ✓
Twitter Card—
FaviconSet ✓
Open Graph Preview
s.to
Serien Online gratis ansehen & streamen - Kostenloses Streaming | S.to
Streame 10.000 TV-Serien online kostenlos. Schaue neueste Episoden, entdecke neue Serien und erkunde unsere umfangreiche Bibliothek.
s.to Related Domains & Cross-References
🤖 AI Summary
Related domain discovery works by finding other websites that share the same IP address, Google Tag Manager container ID, Google Analytics property, or advertising pixel IDs with s.to. This data becomes available after batch-crawling the domain database — individual domain lookups cannot populate this section. We extracted the following tracking IDs that can be used for cross-referencing: ga4_id: G-1776990615.
Tracking IDs for Cross-Referencing
Related Domains
Related domain data requires database (populated after batch crawl)
s.to Data Breaches, History, Green Hosting & Mobile Apps
🤖 AI Summary
This section shows additional intelligence about s.to including data breach history (via HaveIBeenPwned), web archive history (Wayback Machine), green/eco-friendly hosting status, and mobile app presence in the iOS App Store.
✅No Data Breaches Found
This domain has not appeared in any known data breaches.