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ace.mu.nu

HTTP/1.1 HSTS Gzip Crawled in 70,382ms · June 27, 2026 14:06 UTC

ace.mu.nu Website Overview & Technology Report

🤖 AI Summary
We performed a comprehensive analysis of ace.mu.nu on 2026-06-27. The website returned an HTTP 200 status code with a server response time of 1178ms. The page is served over HTTP/1.1 protocol with Gzip compression enabled, achieving approximately 0.0% size reduction. The total page weight is 222 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 20/100 (poor). The following security headers are properly configured: Strict-Transport-Security (HSTS). However, the site is missing Content-Security-Policy, 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 ace.mu.nu. The detected stack includes React, Google Analytics 4, and YouTube Embed. The UI is built with React. Based on our comprehensive analysis of domain age, SSL configuration, email authentication, security headers, and blacklist status, ace.mu.nu receives an overall trust score of 51/100, classified as "Caution Advised".
51
/ 100
Trust Score
20
/ 100
Security Headers
HTTP Response
Status200 OK
Response Time1178ms
ProtocolHTTP/1.1
Page Size222 KB
CompressionGzip
Compression Savings~0.0%
CDNNo
ServerCaddy, Apache/2.2.15 (CentOS)
Total Requests764
3rd Party Domains95
RedirectNone
Detected Technologies (3)
⚛️ React 📊 Google Analytics 4 🎬 YouTube Embed
Security Headers
Content-Security-Policy
Not 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=E8
SubjectcommonName=ace.mu.nu
Type
TLS VersionTLS 1.3
Cipher SuiteTLS_AES_128_GCM_SHA256
Algorithm
Issued
Expires— (? days)
SANs

ace.mu.nu Trust Score & Safety Analysis

🤖 AI Summary
After conducting a thorough safety and legitimacy analysis, ace.mu.nu receives a trust score of 51/100, 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: HSTS (HTTP Strict Transport Security) enforcement preventing protocol downgrade attacks 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 ace.mu.nu 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.
51
/ 100
Caution Advised
Trust Signals
HSTS enabled
DKIM configured
⚠️ 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

ace.mu.nu Technology Stack & Detected Technologies

🤖 AI Summary
Our technology detection engine scanned ace.mu.nu 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. UI Library: React — handles the user interface rendering and component management for ace.mu.nu. Analytics: Google Analytics 4 — tracks visitor behavior and provides traffic insights for ace.mu.nu. Video: YouTube Embed — provides video hosting and playback for ace.mu.nu.
UI Library
⚛️ React(95%)
Analytics
📊 Google Analytics 4(95%)
Video
🎬 YouTube Embed(95%)

ace.mu.nu Performance, Speed & Core Web Vitals

🤖 AI Summary
ace.mu.nu delivers its homepage in 1178ms (server response time), which is considered somewhat slow by industry standards. The total page weight is 222 KB, and we detected 764 resource requests loading assets from 95 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 0.0% 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 1 CSS files and 0 out of 42 JavaScript files are minified. Minifying the remaining 43 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 ace.mu.nu 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 222 KB is the primary factor in this calculation. Core Web Vitals data from the Chrome User Experience Report (CrUX) is not available for ace.mu.nu. 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 view0.11g
RatingA
Page Weight & Optimization
HTML Size222 KB
CompressionGzip
Compression Savings~0.0%
CDNNo
Total Requests764
3rd Party Domains95
CSS Minified0/1
JS Minified0/42

ace.mu.nu DNS Records, Email Authentication & Domain Registration

🤖 AI Summary
ace.mu.nu resolves to the IPv4 address 146.71.125.68, 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: ns1.mu.nu and ns2.mu.nu. 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 ace.mu.nu is handled by mu.nu with 1 MX records configured: ace.mu.nu. Multiple MX records provide failover redundancy — if the primary mail server is unavailable, email will be routed to the next available server. SPF is not configured, meaning any server could potentially send emails pretending to be from this domain. This is a significant email security concern. DMARC is not configured, leaving the domain vulnerable to email spoofing and phishing attacks that impersonate this domain. 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 ace.mu.nu. 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 5 active subdomains for ace.mu.nu: cdn.ace.mu.nu, ftp.ace.mu.nu, mail.ace.mu.nu, webmail.ace.mu.nu, and www.ace.mu.nu. Active subdomains can reveal the organization's infrastructure, including development environments, API endpoints, and third-party service integrations.
DNS Records
A
146.71.125.68
NS
ns1.mu.nu
ns2.mu.nu
MX
ace.mu.nu
Email & Authentication
SPF
DMARC p=—
DKIM
DNSSEC
MX Providermu.nu
Registrar
Organisation
Country
Contact
Registered
Expires
Domain Age
IPv6 SupportNo
Subdomains (5 found)
cdn.ace.mu.nu ftp.ace.mu.nu mail.ace.mu.nu webmail.ace.mu.nu www.ace.mu.nu

ace.mu.nu Page Content, Images & Accessibility

🤖 AI Summary
The homepage of ace.mu.nu contains 20,254 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 0 H2 headings, 20 H3 headings, 20 H4 headings. The page includes 25 images. All images have proper alt text attributes ✓, which is excellent for both accessibility (screen readers) and SEO (search engines can understand image content). The link structure consists of 358 internal links pointing to other pages on the same domain and 338 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 42 external JavaScript files, 1 CSS stylesheets, and 12 iframes on the page. The site implements the following web standards and features: RSS feed for content syndication. Notable missing features: XML Sitemap, robots.txt, and Schema.org structured data. Adding these could improve search engine discoverability and rich result eligibility. We detected the following payment methods accepted on ace.mu.nu: Discover, JCB, and Affirm. Offering multiple payment options including credit cards and digital wallets improves customer trust and can increase conversion rates. The website has social media presence across 2 platforms: Twitter (@charlescwcooke) and Instagram (@cutjibnewsletter). An active social media presence is a positive trust indicator and helps build brand awareness and customer engagement.
20,254
Words
25
Images
100%
Alt Text Score
222
Page Size (KB)
Content Structure
H1
H2 Tags0
H3 Tags20
H4 Tags20
H5 Tags0
H6 Tags0
Internal Links358
External Links338
Assets & Features
JavaScript Files42
JS Minified0/42
CSS Files1
CSS Minified0/1
Iframes12
Images25
Missing Alt0
SitemapNo
Robots.txtNo
PWANo
AMPNo
RSS FeedYes ✓
Payment Methods Detected
💳 Discover💳 JCB💳 Affirm
Social Media Presence
Twitter: @charlescwcookeInstagram: @cutjibnewsletter

ace.mu.nu SEO Analysis, Meta Tags & Open Graph

🤖 AI Summary
The title tag for ace.mu.nu is good at 16 characters: "Ace of Spades HQ". The length is acceptable, though it may be slightly truncated in some search result displays. No meta description is configured for ace.mu.nu. This is a critical SEO oversight — without a meta description, Google will auto-generate a snippet from page content, which may not accurately represent the page or entice users to click. Adding a unique, compelling meta description of 120-155 characters is strongly recommended. A favicon is configured. No Open Graph tags are configured. When someone shares a link to ace.mu.nu 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.
Google SERP Preview
Ace of Spades HQ
https://ace.mu.nu
Meta Tags
TitleAce of Spades HQ...
Title Length16 chars
Meta Desc Length0 chars
H1
Language
Canonical
Meta Robotsnot set
Meta Keywordsnot set
Schema.org & Social
Schema Types
OG Type
OG ImageNot set
Twitter Card
FaviconSet ✓