Powerful online tools for DNS lookup, SSL certificate checker, IP geolocation, port scanner, WHOIS lookup, and more. Trusted by IT professionals, developers, and network administrators worldwide.
Netlookup is a comprehensive suite of free online network tools designed for IT professionals, web developers, system administrators, and anyone who needs to analyze and troubleshoot network-related issues.
Whether you need to perform a DNS lookup, verify SSL certificates, find IP geolocation, scan ports, or test email configurations - we have the right tool for you. No registration required.
Query A, AAAA, MX, NS, TXT, CNAME records and check DNS propagation worldwide.
Verify SSL/TLS certificates, check expiration dates, and analyze security configurations.
Find location, ISP, organization, and network details for any IP address.
Port scanning, ping, traceroute, WHOIS lookup, and connectivity testing.
Powerful, accurate, and easy-to-use tools for DNS lookup, SSL checking, IP analysis, and network diagnostics
Query and analyze DNS records including A, AAAA, MX, NS, TXT, CNAME, and more.
Diagnose network issues with IP lookup, port scanning, ping, traceroute, and WHOIS.
Verify SSL/TLS certificates, check expiration dates, and analyze security configurations.
Validate email addresses, test SMTP servers, and check spam database listings.
Free online DNS lookup tools including DNS record checker, MX lookup, NS lookup, PTR lookup, DNSSEC checker, CAA record checker, and DNS propagation checker for domain analysis.
Free SSL certificate tools including SSL checker, CSR generator, CSR decoder, TLS version checker, certificate decoder, and SSL chain analyzer for website security.
Free email testing tools including email validator, mail server tester, SMTP tester, spam database lookup, and mail body parser for email deliverability analysis.
Free online network tools including IP lookup, port scanner, ping tool, traceroute, WHOIS lookup, and subnet calculator for network diagnostics and troubleshooting.
Free HTTP analysis tools including HTTP header checker, redirect checker, HTTP status code checker, and CORS tester for web application debugging.
Our most frequently used free online tools that help IT professionals and developers diagnose and troubleshoot network issues.
Query DNS records for any domain - A, AAAA, MX, NS, TXT, CNAME records
Find geolocation, ISP, organization, and network details for any IP address
Verify SSL/TLS certificates, check expiration dates and security status
Scan open ports on any IP address or hostname to check running services
Join thousands of IT professionals, developers, and network administrators who use Netlookup daily for DNS lookup, SSL checking, IP analysis, and network diagnostics.
