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Network diagnostics and lookup utilities
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Network Diagnostics for Developers
Network issues are among the most common challenges developers face: servers not responding, DNS misconfigurations, SSL certificate problems, and firewall blocking critical ports. Our network tools help you diagnose these issues directly from your browser, without installing command-line utilities or logging into remote servers.
From DevOps engineers checking server connectivity to frontend developers debugging API calls, these tools provide instant insights into network behavior. Understand why requests fail, verify DNS configurations, and ensure your infrastructure is properly configured.
Why ByteJSON Network Tools?
- Browser-Based DiagnosticsRun network tests directly from your browser. No SSH access needed, no command-line tools required. Works on any device including tablets and restricted environments.
- cURL to Code ConversionPaste any cURL command and instantly get equivalent code in Python, JavaScript, Go, PHP, and more. Saves time when integrating API examples from documentation.
- SSL Certificate AnalysisDecode certificates to check expiration dates, issuer information, and chain validity. Identify certificate issues before they cause production failures.
Common Use Cases
API Integration
Convert cURL examples from API docs into your language's code. Verify DNS resolves to correct IPs before deploying services.
DevOps Debugging
Check if servers are reachable from outside your network. Verify firewall rules by scanning ports on your infrastructure.
Security Auditing
Inspect SSL certificates for proper configuration and expiration. Check which ports are exposed on production servers.
Real-time Testing
Test WebSocket connections during development. Verify real-time messaging infrastructure is working.
Network Quick Reference
Common DNS Records
- • A - IPv4 address
- • AAAA - IPv6 address
- • CNAME - Alias to another domain
- • MX - Mail server
- • TXT - Text records (SPF, DKIM)
Common Ports
- • 22 - SSH
- • 80 - HTTP
- • 443 - HTTPS
- • 3306 - MySQL
- • 5432 - PostgreSQL
SSL Certificate Info
- • Subject - Certificate owner
- • Issuer - CA that signed it
- • Valid From/To - Date range
- • Serial Number - Unique ID
- • Signature Algorithm