How to Find Your Router’s WAN IP Address
Your router’s WAN IP address is the address your ISP assigns to the internet-facing side of your router — not the admin page address your devices use locally. Here’s exactly how to find it.
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Does a VPN Hide Your IP Address?
Does a VPN hide your IP address? Yes — but DNS, WebRTC, and IPv6 leaks can expose it. Learn what a VPN hides, how to test it, and how to stop leaks.
IP Address Formats: Decimal, Binary, Hex, and How to Convert
Master IP address formats: dotted decimal, binary, hexadecimal, and integer. Learn to convert between them by hand, identify IP classes, and see why format parsing ambiguity has caused real security bugs.
IPv4 vs. IPv6: Address Exhaustion and the Path Forward
Understand the IPv4 vs IPv6 differences with a 2026 perspective. Learn why IPv4 ran out, how IPv6 solves it, and what the March 2026 majority milestone on Google means for your network.
Public vs. Private IP Addresses: What’s the Difference?
Understand public vs private IP addresses, how NAT bridges them, and the often-missed fourth range (RFC 6598’s 100.64.0.0/10) that ISPs now use for carrier-grade NAT on mobile and satellite networks.
How to Find Your Public IP Address (And Why It Matters)
TL;DR — Key Takeaways Your public IP address is the address the rest of the internet sees when your devices connect. It is assigned by your ISP, not by you. The fastest way to find it is to use a web-based IP lookup tool. One click. You can also check your IP from the command … Read more