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About Public Checker

Public Checker - Email Domain Security Analyzer Quickly verify your email domain's security configuration with Public Checker, a powerful yet simple tool for checking DNS records and SSL certificates.

What Public Checker Does: Public Checker helps IT administrators, security professionals, and domain owners ensure their email infrastructure is properly configured.

Enter any domain name and instantly analyze:
• SPF Records - Verify Sender Policy Framework configuration to prevent email spoofing
• DMARC Records - Check Domain-based Message Authentication, Reporting & Conformance settings
• DKIM Records - Validate DomainKeys Identified Mail signatures for email authentication
• Domain Registration - View WHOIS information including registrar and registration dates
• SSL/TLS Certificates - Analyze certificate validity, grade, and security with Qualys SSL Labs
• CDN Detection - Identify content delivery networks and hosting providers

Key Features:
✓ Fast & Easy - Just enter a domain and tap "Check Domain"
✓ Comprehensive Analysis - All critical email security records in one place
✓ Expert Insights - Powered by Google Public DNS, Qualys SSL Labs, and industry-standard APIs
✓ Privacy-Focused - No data storage, no tracking, no account required
✓ Direct Links - Quick access to detailed reports from dmarcian and SSL Labs
✓ Clean Interface - Simple, intuitive design focused on results

Perfect For:
• Email administrators validating domain security
• IT professionals troubleshooting email delivery issues
• Security teams conducting domain audits
• Web developers checking SSL configurations
• Small business owners verifying email authentication

How It Works:
1) Enter your domain name (e.g., example.com)
2) Tap "Check Domain"
3) View instant results for all DNS records and SSL analysis
4) Tap any result for detailed explanations and recommendations
5) Use external links for in-depth reports

Privacy & Security:
Public Checker respects your privacy. We don't collect personal information, store your queries, or track your usage. Domain names are sent only to trusted third-party services (Google DNS, Qualys SSL Labs, RDAP) for technical analysis. No data is saved on your device or our servers.

Why Email Security Matters:
Proper SPF, DMARC, and DKIM configuration protects your domain from being used in phishing attacks, improves email deliverability, and builds trust with recipients. SSL/TLS certificates ensure secure connections to your web and mail servers.

Powered By:
• Google Public DNS
• Qualys SSL Labs API
• API Layer
• RDAP.org

Download Public Checker today and take control of your email domain security!