Network Diagnostics Simplified
NetLookup is a comprehensive suite of 25+ network diagnostic and analysis tools for developers, sysadmins, and security professionals.
Popular Tools
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DNS Lookup
Query all DNS record types for any domain
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Ping Tool
Test connectivity and measure latency
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SSL Checker
Verify SSL certificates and expiration dates
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MX Lookup
Verify mail server configurations
Powerful Tools for Every Need
NetLookup provides a comprehensive suite of tools designed to help you diagnose, analyze, and optimize your network infrastructure and web applications.
DNS Tools
Comprehensive DNS diagnostic tools to troubleshoot domain issues, verify configurations, and ensure proper resolution.
Query DNS records for any domain with support for all record types (A, AAAA, MX, TXT, etc.)
Convert IP addresses to hostnames and verify PTR records
Retrieve domain registration details, expiration dates, and registrar information
Check DNS propagation across global DNS servers
Networking Tools
Essential network analysis utilities to diagnose connectivity issues, measure performance, and identify bottlenecks.
Test connectivity and measure latency to any host
Visualize network paths and identify routing issues
Check for open ports and services on remote hosts
Measure download and upload speeds from multiple locations
Email Tools
Comprehensive email server diagnostics to verify configurations, check security records, and test deliverability.
Verify mail server configurations and priorities
Check and validate SPF records to prevent email spoofing
Verify DKIM signatures and key configurations
Test email delivery to major providers and check for spam triggers
HTTP Tools
Web application analysis tools to inspect HTTP traffic, headers, and response times for performance optimization.
Inspect HTTP headers and security configurations
Test HTTP status codes and redirects
Measure TTFB and full page load times from multiple locations
Check for modern HTTP protocol support
SSL Tools
SSL/TLS certificate analysis tools to verify security configurations, check expiration dates, and identify vulnerabilities.
Verify SSL/TLS certificates and check expiration dates
Inspect certificate details, chains, and authorities
Check for known SSL/TLS vulnerabilities like BEAST, POODLE, and Heartbleed
Analyze supported cipher suites and security strength
Why Choose NetLookup?
NetLookup stands out with its comprehensive feature set, reliability, and ease of use.
All-in-One Solution
Access all the network diagnostic tools you need in one place, with a consistent interface and experience.
Cloud-Based
No software to install or maintain. Access NetLookup from any device with a web browser.
Real-Time Results
Get instant results for all your queries, with detailed analysis and recommendations.
Global Network
Run tests from multiple locations worldwide to identify regional issues and performance bottlenecks.
Detailed Reports
Generate comprehensive reports with visualizations and actionable insights.
Who Uses NetLookup?
Our tools are designed for professionals who need reliable network diagnostics and analysis.
System Administrators
Diagnose network issues, monitor DNS changes, verify email configurations, and ensure system reliability.
- Troubleshoot connectivity issues
- Verify DNS propagation
- Monitor email server health
- Check SSL certificate expiration
Web Developers
Debug HTTP responses, test API endpoints, verify SSL certificates, and optimize web performance.
- Analyze HTTP headers and responses
- Test API endpoints
- Verify SSL configurations
- Optimize page load times
Security Analysts
Scan for vulnerabilities, verify security configurations, and monitor network traffic for potential threats.
- Identify security misconfigurations
- Check for SSL vulnerabilities
- Verify email security (SPF, DKIM, DMARC)
- Monitor for suspicious network activity
Ready to get started?
Access all NetLookup tools with a free account. Start diagnosing and optimizing your network today.