puzzcore.com Website Overview & Technology Report
🤖 AI Summary
We performed a comprehensive analysis of puzzcore.com on 2026-06-28. The website returned an HTTP 200 status code with a server response time of 21710ms. The page is served over HTTP/1.1 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 146 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 4 technologies across 4 categories powering puzzcore.com. The detected stack includes Google AdSense, Cloudflare, Google Fonts, and Font Awesome.
Based on our comprehensive analysis of domain age, SSL configuration, email authentication, security headers, and blacklist status, puzzcore.com receives an overall trust score of 59/100, classified as "Caution Advised".
HTTP Response
Status200 OK
Response Time21710ms
ProtocolHTTP/1.1
Page Size146 KB
CompressionNone
Compression SavingsN/A
CDNNo
Servernginx/1.20.1
Total Requests778
3rd Party Domains7
Redirect1 hop(s)
Detected Technologies (4)
📢 Google AdSense
☁️ Cloudflare
🔤 Google Fonts
🎯 Font Awesome
Security Headers
✗
Content-Security-Policy
Not set
✗
Strict-Transport-Security (HSTS)
Not 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=E7
SubjectcommonName=www.puzzcore.com
Type—
TLS VersionTLS 1.3
Cipher SuiteTLS_AES_256_GCM_SHA384
Algorithm—
Issued—
Expires— (? days)
SANs—
puzzcore.com Trust Score & Safety Analysis
🤖 AI Summary
After conducting a thorough safety and legitimacy analysis, puzzcore.com receives a trust score of 59/100, which places it in the "Caution Advised" 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, and DMARC email authentication with a none policy.
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 puzzcore.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.
Trust Signals
✅ Valid HTTPS
✅ SPF configured
✅ DMARC configured (p=none)
⚠️ DNSSEC not enabled
⚠️ Missing Content-Security-Policy
⚠️ 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
puzzcore.com Technology Stack & Detected Technologies
🤖 AI Summary
Our technology detection engine scanned puzzcore.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.
Advertising: Google AdSense — handles advertising pixel tracking and conversion measurement for puzzcore.com.
CDN: Cloudflare — accelerates content delivery by caching assets at edge locations worldwide for puzzcore.com.
Fonts: Google Fonts — delivers web fonts for typography for puzzcore.com.
Icon Set: Font Awesome — provides additional functionality for puzzcore.com.
Advertising
CDN
Fonts
Icon Set
puzzcore.com Performance, Speed & Core Web Vitals
🤖 AI Summary
puzzcore.com delivers its homepage in 21710ms (server response time), which is considered slow by industry standards. The total page weight is 146 KB, and we detected 778 resource requests loading assets from 7 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 puzzcore.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 6 CSS files and 4 out of 6 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.
From an environmental perspective, each page view of puzzcore.com produces approximately 0.07g 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 146 KB is the primary factor in this calculation.
Core Web Vitals data from the Chrome User Experience Report (CrUX) is not available for puzzcore.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.
Core Web Vitals data not available
Requires CrUX API key configuration
Carbon Footprint
CO₂ per page view0.07g
RatingA
Page Weight & Optimization
HTML Size146 KB
CompressionNone
Compression SavingsN/A
CDNNo
Total Requests778
3rd Party Domains7
CSS Minified1/6
JS Minified4/6
puzzcore.com DNS Records, Email Authentication & Domain Registration
🤖 AI Summary
puzzcore.com resolves to the IPv4 address 133.125.71.134, 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: dns01.muumuu-domain.com and dns02.muumuu-domain.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 puzzcore.com is handled by ne.jp with 1 MX records configured: www2216.sakura.ne.jp. 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 puzzcore.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.
Our subdomain enumeration scan discovered 1 active subdomains for puzzcore.com: www.puzzcore.com. Active subdomains can reveal the organization's infrastructure, including development environments, API endpoints, and third-party service integrations.
DNS Records
NS
dns01.muumuu-domain.com
dns02.muumuu-domain.com
Email & Authentication
MX Providerne.jp
Registrar—
Organisation—
Country—
Contact—
Registered—
Expires—
Domain Age—
IPv6 SupportNo
Subdomains (1 found)
puzzcore.com Page Content, Images & Accessibility
🤖 AI Summary
The homepage of puzzcore.com contains 691 words of visible text content. This is a moderate amount of content. The page is structured with 3 H2 headings, 8 H3 headings, 0 H4 headings.
The page includes 64 images. 31 images (48%) 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 52% of images have proper alt text — we recommend adding descriptive alt attributes to all images.
The link structure consists of 651 internal links pointing to other pages on the same domain and 1 external link 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.
Notable missing features: XML Sitemap, robots.txt, and Schema.org structured data. Adding these could improve search engine discoverability and rich result eligibility.
Content Structure
H1—
H2 Tags3
H3 Tags8
H4 Tags0
H5 Tags0
H6 Tags0
Internal Links651
External Links1
Assets & Features
JavaScript Files6
JS Minified4/6
CSS Files6
CSS Minified1/6
Iframes0
Images64
Missing Alt31
SitemapNo
Robots.txtNo
PWANo
AMPNo
RSS FeedNo
puzzcore.com SEO Analysis, Meta Tags & Open Graph
🤖 AI Summary
The title tag for puzzcore.com is good at 24 characters: "ジグソーパズル【パズコレ】 無料オンラインゲーム". The length is acceptable, though it may be slightly truncated in some search result displays.
The meta description is 111 characters (well-optimized): "ジグソーパズル パズコレ!!パズコレは投稿画像をもとに、オンライン上でジグソーパズルゲームを無料で作成&遊んで楽しめるサイトです。会員登録すると途中セーブや遊んだジグソーパズルの成績を残したりコメントをつける事ができます。". 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 page language is declared as ja.
Open Graph meta tags are configured with 4/4 recommended fields: OG title ("ジグソーパズル【パズコレ】 無料オンラインゲーム..."), 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.
Google SERP Preview
ジグソーパズル【パズコレ】 無料オンラインゲーム
https://puzzcore.com
ジグソーパズル パズコレ!!パズコレは投稿画像をもとに、オンライン上でジグソーパズルゲームを無料で作成&遊んで楽しめるサイトです。会員登録すると途中セーブや遊んだジグソーパズルの成績を残したりコメントをつける事ができます。
Meta Tags
Titleジグソーパズル【パズコレ】 無料オンラインゲーム...
Title Length24 chars
Meta Desc Length111 chars
H1—
Languageja
Canonical—
Meta Robotsnot set
Meta Keywordsnot set
Schema.org & Social
Schema Types—
OG Typewebsite
OG ImageSet ✓
Twitter Cardsummary_large_image
FaviconNot set
Open Graph Preview
puzzcore.com
ジグソーパズル【パズコレ】 無料オンラインゲーム
ジグソーパズル パズコレ!!パズコレは投稿画像をもとに、オンライン上でジグソーパズルゲームを無料で作成&遊んで楽しめるサイトです。会員登録すると途中セーブや遊んだジグソーパズルの成績を残したりコメントをつける事ができます。
puzzcore.com Data Breaches, History, Green Hosting & Mobile Apps
🤖 AI Summary
This section shows additional intelligence about puzzcore.com 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.