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Clear, practical explainers on IP basics, networking, and security.
18 guides
What Is DNS? How Domains Find IP Addresses
A beginner-friendly introduction to DNS, the system that turns domain names into IP addresses so your browser can find websites.
What Is My Local IP Address? (Public, Private, and Loopback)
“My IP” can mean three different things—your public address, your private LAN address, or the loopback on your own machine. Here’s how to tell which is which and how to check each one safely.
What Is 127.0.0.1?
Learn what 127.0.0.1 means, why it is called localhost, and how to use it safely when testing services on your own computer.
The Loopback IP Range Explained
Understand the 127.0.0.0/8 loopback range, how it differs from private and public IPs, and why local services use it for safe testing.
Intranet vs Internet: Key Differences Explained
A practical comparison between intranets (private networks) and the internet (public network), with examples of how each works and why the distinction matters.