Networking

What is my IP?

Your public IPv4 and IPv6, provider and approximate location, and whether your VPN or WebRTC leak your real IP.

IP address lookup

Who owns this IP? ASN, announced prefix, country, reverse DNS, RPKI and abuse contact. IPv4 and IPv6.

Continuous ping

Does your connection drop? Live latency, loss, jitter and outages, plus a ping output analyzer.

Visual traceroute

Paste your tracert or traceroute and see which networks and countries it crosses and where delay appears.

Speed test

Download, upload, latency and bufferbloat with a clear verdict: good for video calls, 4K or gaming?

Subnet calculator

Network, broadcast, hosts, mask and wildcard. With step-by-step guide, map, diagnosis and configuration.

VLSM calculator

Split a network between departments without waste. Paste your list from Excel.

VLAN planner

Subnet, gateway and DHCP per VLAN, best-practice review and Cisco, MikroTik and Linux configuration.

IPv6 calculator

Compress, expand, split a /48 into /64s and generate EUI-64 addresses.

Ranges, routes and AllowedIPs

Range → CIDR, route summarization, WireGuard exclusions and overlap detection.

Network inventory

Python, PowerShell and Bash scripts that sweep your network and compare it with your plan.

Subnetting practice

Unlimited exercises in three levels and timed exams to share with your class.