// ~/free-tools
Free Networking & Diagnostic Tools
A professional-grade library of calculators, lookups, and troubleshooting helpers designed to reduce MTTR without burying you in vendor fluff.
Traceroute Map
Visualize hop-by-hop latency on a global geographic map.
ISP Info
Identify ASN details and public IP routing information.
Subnet Calculator
Fast IPv4/IPv6 CIDR calculations and mask planning.
NOC Mode
A dashboard view designed for 24/7 network monitoring screens.
DNS Checker
Verify global DNS propagation and record health.
Config Generator
Template-based Cisco, Juniper, and Arista config builders.
Port Scanner
Check for open common ports and firewall vulnerabilities.
Ping Monitor
Track uptime and jitter with real-time ICMP graphing.
Outage Detector
Global status checks to identify regional backbone issues.