CDN Checker
Discover which Content Delivery Network (CDN) a website uses. Comprehensive analysis of server configuration, security headers, SSL/TLS, and performance.
Error
CDN Detection
Domain & Network Information
Performance Metrics
Security Analysis
SSL/TLS Certificate
Email Security
HTTP Headers
How to Use the CDN Checker
Quick CDN Analysis
- 1 Enter the website URL you want to analyze
- 2 Complete the reCAPTCHA verification
- 3 Click "Analyze CDN & Server" to start the analysis
- 4 Review comprehensive CDN detection, security, and performance results
What You'll Discover
- Which CDN the website uses (Cloudflare, CloudFront, Fastly, etc.)
- Security grade based on HTTP headers and SSL/TLS configuration
- SSL certificate details including expiration date
- Performance metrics like response time and compression
What This CDN Checker Does
CDN Detection & Analysis
- Detect 14+ major CDNs including Cloudflare, CloudFront, Fastly, Akamai
- Analyze DNS records (CNAME, IP address) for CDN identification
- Examine HTTP headers for CDN-specific signatures
- Identify server configuration and hosting infrastructure
- Display evidence-based detection with multiple verification methods
Security & Performance Audit
- Security grade (A+ to F) based on 7 critical headers
- SSL/TLS certificate validation and expiration monitoring
- Email security analysis (SPF, DMARC, MX records)
- Response time measurement and performance metrics
- Complete HTTP headers inspection for troubleshooting
Why CDN Analysis Matters
Performance Optimization
CDNs deliver content from servers closest to your users, reducing latency and improving page load times. Knowing if a site uses a CDN helps you understand its performance strategy and identify optimization opportunities.
Security Analysis
Our security grading system evaluates critical headers like CSP, HSTS, and X-Frame-Options. Sites with poor security grades (C or below) are vulnerable to attacks and should implement missing security headers immediately.
Competitive Intelligence
Discover what infrastructure your competitors use. If competitors use enterprise CDNs like Cloudflare or Akamai, it indicates they prioritize performance and security — insights valuable for your own infrastructure decisions.
Frequently Asked Questions
14+ CDN Detection
Accurately identify which CDN a website uses from our database of 14+ major providers including Cloudflare, CloudFront, and Fastly.
Security Grade A+ to F
Comprehensive security analysis with letter grading based on HTTP security headers, SSL/TLS configuration, and best practices.
SSL/TLS Monitoring
Monitor SSL certificate validity, expiration dates, issuer information, and TLS version to ensure secure HTTPS connections.
Performance Metrics
Measure response time, page size, compression type, and HTTP status to identify performance bottlenecks and optimization opportunities.
Email Security Analysis
Verify SPF, DMARC, and MX records to ensure proper email authentication and protect your domain from spoofing and phishing.
DNS & Network Info
Analyze IP addresses, CNAME records, and server headers to understand website infrastructure and hosting configuration.