NetworkGeekTools.com is a comprehensive suite of network engineering tools designed for IT professionals, system administrators, network engineers, and anyone who works with computer networks.
Built on edge computing infrastructure with global CDN distribution. Get instant results no matter where you are in the world.
Your queries are processed in real-time and never stored. We respect your privacy and don't track your network information.
99.9% uptime with redundant infrastructure. Access your essential network tools whenever you need them.
Built with Next.js, TypeScript, and modern web standards. Responsive design that works on desktop, tablet, and mobile.
Designed by network engineers who understand the daily challenges of managing networks and infrastructure.
From subnet calculations to DNS lookups, port checking to bandwidth estimation - all the tools you need in one place.
Instantly see your public IPv4 or IPv6 address
Calculate IPv4/IPv6 subnets with CIDR notation
Query A, AAAA, MX, TXT, CNAME, NS records
Test TCP port availability on any host
Check if websites are up or down
Geolocation, ISP, and ASN information
Convert units and estimate transfer times
Analyze SSL certificates and validity
Domain registration information
TCP latency measurement and statistics
Generate firewall and proxy configs
Identify private, CGNAT, and special IP ranges
Design and troubleshoot network infrastructure
Manage servers and network configurations
Deploy and monitor cloud infrastructure
Learn networking concepts hands-on
Our tools are completely free to use with no registration required. Start calculating subnets, looking up DNS records, and checking ports right away.