Understand the basics
Plain-English explainers on IPs, DNS, ASN, CGNAT, VPNs, WiFi, and networking - no jargon assumed.
Every article is paired with a live tool so the theory turns into real diagnostics immediately. Troubleshooting a VPN? Read the leak guide first, then run DNS and WebRTC checks. Investigating an unfamiliar IP? Pair the ASN and WHOIS articles with the lookup tools. Start with a concept, finish with a verified result.
Plain-English explainers on IPs, DNS, ASN, CGNAT, VPNs, WiFi, and networking - no jargon assumed.
Each article links to the diagnostic tool that proves the point, so you move from reading to real data in one session.
Troubleshooting guides walk through port forwarding, CGNAT, wrong IP location, VPN leaks, and more with step-by-step checks.
Step-by-step commands to read your router IP on Windows, macOS, iPhone, Android, and Linux. For login addresses and admin troubleshooting, see the router login guide.
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Learn what a router does, how routing works, the difference between routers, modems, and switches, and why router security matters.
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Learn what the internet is, how packets, protocols, routers, and physical infrastructure fit together, and why these basics matter.
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Find your computer IP address, understand the internet address of your computer, and learn router IP vs public IP differences.
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