cdmiennam.edu.vn Website Overview & Technology Report
🤖 AI Summary
We performed a comprehensive analysis of cdmiennam.edu.vn on 2026-06-27. The website returned an HTTP 200 status code with a server response time of 12230ms. The page is served over HTTP/2 protocol with Gzip compression enabled, achieving approximately 60.0% size reduction. The total page weight is 110 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 3 technologies across 3 categories powering cdmiennam.edu.vn. The detected stack includes Next.js media, React, and Google Fonts. The site uses Next.js as its primary framework (version media). The UI is built with React.
Based on our comprehensive analysis of domain age, SSL configuration, email authentication, security headers, and blacklist status, cdmiennam.edu.vn receives an overall trust score of 53/100, classified as "Caution Advised".
HTTP Response
Status200 OK
Response Time12230ms
ProtocolHTTP/2
Page Size110 KB
CompressionGzip
Compression Savings~60.0%
CDNNo
Serveropenresty
Total Requests121
3rd Party Domains12
RedirectNone
Detected Technologies (3)
🔧 Next.js
⚛️ React
🔤 Google Fonts
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=YE2
SubjectcommonName=cdmiennam.edu.vn
Type—
TLS VersionTLS 1.3
Cipher SuiteTLS_AES_256_GCM_SHA384
Algorithm—
Issued—
Expires— (? days)
SANs—
cdmiennam.edu.vn Trust Score & Safety Analysis
🤖 AI Summary
After conducting a thorough safety and legitimacy analysis, cdmiennam.edu.vn receives a trust score of 53/100, 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.
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 cdmiennam.edu.vn 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
⚠️ 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
cdmiennam.edu.vn Technology Stack & Detected Technologies
🤖 AI Summary
Our technology detection engine scanned cdmiennam.edu.vn 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.
Framework: Next.js (version media) — provides the application framework and routing for cdmiennam.edu.vn.
UI Library: React — handles the user interface rendering and component management for cdmiennam.edu.vn.
Fonts: Google Fonts — delivers web fonts for typography for cdmiennam.edu.vn.
Framework
UI Library
Fonts
cdmiennam.edu.vn Performance, Speed & Core Web Vitals
🤖 AI Summary
cdmiennam.edu.vn delivers its homepage in 12230ms (server response time), which is considered slow by industry standards. The total page weight is 110 KB, and we detected 121 resource requests loading assets from 12 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: 1 out of 4 CSS files and 0 out of 15 JavaScript files are minified. Minifying the remaining 18 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 cdmiennam.edu.vn produces approximately 0.05g 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 110 KB is the primary factor in this calculation.
Core Web Vitals data from the Chrome User Experience Report (CrUX) is not available for cdmiennam.edu.vn. 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 view0.05g
RatingA
Page Weight & Optimization
HTML Size110 KB
CompressionGzip
Compression Savings~60.0%
CDNNo
Total Requests121
3rd Party Domains12
CSS Minified1/4
JS Minified0/15
cdmiennam.edu.vn DNS Records, Email Authentication & Domain Registration
🤖 AI Summary
cdmiennam.edu.vn resolves to the IPv4 address 14.241.182.40, 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.
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 was not detected. Without DKIM, recipients cannot cryptographically verify that emails claiming to be from this domain are authentic.
DNSSEC is not enabled for cdmiennam.edu.vn. 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 2 active subdomains for cdmiennam.edu.vn: mail.cdmiennam.edu.vn and www.cdmiennam.edu.vn. Active subdomains can reveal the organization's infrastructure, including development environments, API endpoints, and third-party service integrations.
Email & Authentication
MX Provider—
Registrar—
Organisation—
Country—
Contact—
Registered—
Expires—
Domain Age—
IPv6 SupportNo
Subdomains (2 found)
mail.cdmiennam.edu.vn www.cdmiennam.edu.vn
cdmiennam.edu.vn Page Content, Images & Accessibility
🤖 AI Summary
The homepage of cdmiennam.edu.vn contains 716 words of visible text content. This is a moderate amount of content. The page is structured with 5 H2 headings, 5 H3 headings, 3 H4 headings.
The page includes 22 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 47 internal links pointing to other pages on the same domain and 13 external links pointing to third-party websites. There are 15 external JavaScript files, 4 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.
The website has social media presence across 1 platforms: Facebook (@cdmiennam). An active social media presence is a positive trust indicator and helps build brand awareness and customer engagement.
Content Structure
H1Đào tạo trình độchuyên mônkỹ năng vững vàng
H2 Tags5
H3 Tags5
H4 Tags3
H5 Tags0
H6 Tags0
Internal Links47
External Links13
Assets & Features
JavaScript Files15
JS Minified0/15
CSS Files4
CSS Minified1/4
Iframes0
Images22
Missing Alt0
SitemapNo
Robots.txtNo
PWANo
AMPNo
RSS FeedNo
Social Media Presence
cdmiennam.edu.vn SEO Analysis, Meta Tags & Open Graph
🤖 AI Summary
The title tag for cdmiennam.edu.vn is well-optimized at 36 characters: "Trường Cao Đẳng Miền Nam | CDMIENNAM". The length falls within the ideal range for Google search results, ensuring the full title is displayed without truncation.
The meta description is 176 characters (slightly long): "Trường Cao đẳng Miền Nam đào tạo đa ngành nghề, đảm bảo chất lượng giáo dục, mang đến cơ hội việc làm vững chắc cho sinh...". 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://cdmiennam.edu.vn, preventing duplicate content issues, the page language is declared as vi, 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 ("Trường Cao Đẳng Miền Nam | CDMIENNAM..."), 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 meta keywords tag contains 6 terms including Trường Cao Đẳng Miền Nam, Cao Đẳng Miền Nam, Tuyển sinh cao đẳng, NCTU, and Cao đẳng chính quy. 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
Trường Cao Đẳng Miền Nam | CDMIENNAM
https://cdmiennam.edu.vn
Trường Cao đẳng Miền Nam đào tạo đa ngành nghề, đảm bảo chất lượng giáo dục, mang đến cơ hội việc làm vững chắc cho sinh viên sau khi tốt nghiệp. Tuyển sinh cao đẳng chính quy.
Meta Tags
TitleTrường Cao Đẳng Miền Nam | CDMIENNAM...
Title Length36 chars
Meta Desc Length176 chars
H1Đào tạo trình độchuyên mônkỹ năng vững vàng
Languagevi
Canonicalhttps://cdmiennam.edu.vn
Meta Robotsindex, follow
Meta KeywordsTrường Cao Đẳng Miền Nam,Cao Đẳng Miền Nam,Tuyển sinh cao đẳ...
Schema.org & Social
Schema Types—
OG Typewebsite
OG ImageSet ✓
Twitter Cardsummary_large_image
FaviconSet ✓
Open Graph Preview
cdmiennam.edu.vn
Trường Cao Đẳng Miền Nam | CDMIENNAM
Trường Cao đẳng Miền Nam đào tạo đa ngành nghề, đảm bảo chất lượng giáo dục, mang đến cơ hội việc làm vững chắc cho sinh viên sau khi tốt nghiệp.