Topics Glossary About Privacy Terms Free IP Tools →
48 articles • 100+ glossary terms

The Networking
Knowledge Base

Learn IP addresses, DNS, VPNs, protocols, and security. No corporate bias, no affiliate spam, no fluff. Just clear explanations that actually make sense.

7 topics 48 articles 100+ terms
Start Here

Featured Articles

The most important networking concepts, explained clearly and without the usual corporate jargon.

IP Fundamentals

What Is an IP Address?

The fundamental identifier that makes the entire internet work. Every device, every connection, every packet.

Beginner • 8 min read
DNS

What Is DNS?

The internet's phone book, except way more complicated and honestly kind of fragile. Here's how it actually works.

Beginner • 7 min read
Privacy & Security

What Is a VPN?

Everybody talks about VPNs but most explanations are just thinly veiled ads. Here's the unbiased truth.

Beginner • 8 min read
Protocols

What Is SSL/TLS?

That little padlock in your browser bar? It's doing a LOT more than you think. Here's the full breakdown.

Beginner • 7 min read
Browse

Topics

Everything organized by category. Pick your lane and start learning.

IP Fundamentals

8 articles

Privacy & Security

10 articles

DNS

6 articles

Network Protocols

6 articles

Tools & Concepts

6 articles

Threats & Attacks

5 articles

Infrastructure

7 articles
Reference

Quick Reference Guides

Bookmark these. You'll come back to them more than you think.

Common Port Numbers

Complete reference table

HTTP Status Codes

Every code explained

Subnet Cheat Sheet

CIDR table at a glance

Ecosystem

More Than Just Articles

whatismyip.wiki is part of a bigger picture. Free tools, API access, and deep documentation.

Tools

whatismyip.technology

15 free networking tools. IP lookup, DNS checker, WHOIS, port scanner, headers inspector, and more. No signup, no limits.

API

whatismyip.codes

RESTful API for IP geolocation, DNS resolution, and network intelligence. Built for developers who need reliable data.

FAQ

Common Questions

Yes, but hear us out. Go Google "what is a VPN" right now. The first page is basically a NordVPN infomercial. Every result is either an affiliate cashgrab or a 2,000-word essay that says nothing. We wrote 48 articles that actually explain networking without trying to sell you something. No ads, no affiliate links, no "our partner recommends" nonsense. Just explanations that don't make you want to close the tab.
People who've spent too many years explaining the difference between TCP and UDP to friends at dinner parties. We're networking nerds, developers, and writers who got tired of linking people to articles that were either biased, outdated, or buried under 47 cookie consent pop-ups. So we built our own.
Cloudflare's content is genuinely excellent — but by the end of every article, Cloudflare's own product somehow comes out looking pretty great. Funny how that works. We're not owned by a CDN company, a VPN provider, or a firewall vendor. When we compare DNS providers, nobody's paying us to pick a winner. Plus we link every concept to free hands-on tools so you can actually test what you just read, not just take our word for it.
Please do. Link to us from your syllabus, reference articles in your presentations, assign them as reading. If you're a professor who replaces a 400-page textbook chapter with one of our articles, honestly, that would make our entire month. No permission needed. Just don't copy-paste entire articles and slap your name on them. That's not cool, and also that's plagiarism.
Same team, different purpose. whatismyip.technology has 15 free networking tools — IP lookup, DNS checker, WHOIS, port scanner, VPN leak test, the whole toolkit. This wiki is the educational side: we explain what those tools do and why you'd use them. Read about DNS here, then go run a DNS lookup there. Theory and practice, no signup required for either.
No catch. No paywall behind "premium" articles. No "subscribe to read the rest." No newsletter pop-up after 3 seconds. The site runs on a $5 server, the CSS is one file, and nobody here has a salary that depends on your email address. We built it because we wanted it to exist. If that sounds suspicious in 2026, that says more about the internet than it does about us.