Internet Privacy & Security Guides

Plain-English explanations of how IP addresses, VPN leaks, DNS, WebRTC, browser fingerprinting, and autonomous systems work — and how to test them.

What Is an ASN?

Autonomous System Numbers identify network operators on the internet. Learn what ASNs mean in VPN and IP tests.

VPN leaks expose your real IP, DNS queries, or WebRTC data despite your VPN being active. The four types explained.

A DNS leak lets your ISP see every domain you visit even when you are connected to a VPN. Causes, risks, and fixes.

WebRTC leaks your real IP through the browser even with a VPN active. How ICE candidates expose you and how to block it.

IP geolocation maps an IP to an approximate location. How it works, why it is often inaccurate, and what VPNs change.

Browser fingerprinting identifies you without cookies using GPU, fonts, and screen data. How it works and how to reduce it.

These guides explain concepts — use MyIPScan's tools to check your actual exposure.