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.
Find your console IP, reserve it in the router, and use it for port forwarding and DMZ rules, with the official paths for PS5, Xbox, and Switch.
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Menu paths for Roku, Fire TV, Samsung, LG, Google TV, and Apple TV, the router method when the remote is gone, and how to keep the address stable.
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Where HP, Canon, Epson, and Brother printers show their IP address, how to find it from your computer or router, and how to stop it changing.
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DHCP leases, router reconnects, CGNAT, mobile data, VPNs, and IPv6 privacy addresses explained, plus how to keep the same public or local IP.
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Why sites block IP addresses, who shows which block message, how long a temporary block lasts, and how to get your IP unblocked.
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What "Sorry, you have been blocked" and Cloudflare errors 1020, 1015, 1005, and 1009 mean, why they hit your IP, and the fixes that work.
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Use the AdGuard Home query log to diagnose missing filtering, DNS bypass, IPv6, browser encrypted DNS, and client exceptions.
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Find the cause of duplicate local IP addresses, fix Windows and Mac conflicts, and prevent printer and router DHCP collisions.
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Scam texts no longer have typos. The five scripts behind most smishing, how to check a link without tapping it, what to do if you clicked, and how to filter them.
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