Blog
Plain-English guides on IP addresses, networking, VPNs, and online privacy
Every time you connect to a website, your device shares more information than most people realise — your IP address, approximate location, ISP, browser fingerprint, HTTP headers, and more. This blog covers what that information reveals, who can see it, and what you can do about it.
Articles are written for regular internet users, not network engineers. No assumed background required. If you want to go deeper on any topic, each post links to the relevant live tool on this site so you can check your own data directly.
How Does HTTPS Work? TLS, Certificates, and Security Headers Explained
HTTPS encrypts your connection using TLS. But the padlock icon only tells you part of the story — the actual security of a site is visible in its response headers. Here is how to read them.
What Is an ASN? Autonomous System Numbers Explained
Every IP lookup shows an ASN — but what does it mean? ASNs are how the internet routes traffic between ISPs, cloud providers, and data centres. Here is what they reveal about any IP address.
What Is a Proxy Server? (And How It Differs From a VPN)
A proxy server routes your traffic through an intermediary — but what does that look like from the other side? This guide explains how proxies work, the types that exist, and when a proxy beats a VPN.
How Accurate Is IP Geolocation? (Honest Numbers)
IP geolocation is ~95% accurate at the country level but only 50–80% accurate at the city level — and often wrong entirely for mobile and VPN users. Here is why, with honest benchmarks.
What Is Browser Fingerprinting? The Tracking That Survives VPNs and Incognito Mode
Browser fingerprinting tracks you using canvas hash, WebGL, fonts, and dozens of other signals — and it works even through VPNs, cookie deletion, and private browsing. Here is how it works and what you can actually do about it.
DNS Propagation: Why Changes Take Time (and How to Speed It Up)
DNS propagation can take hours or days — but TTL is a lever you control. Learn why propagation happens, how to check it live, and how to pre-configure your DNS for near-instant migrations.
Is My IP Address Public? What You Need to Know
Find out whether your IP address is public or private, what the difference means, when a public IP is a security risk, and how CGNAT affects millions of users.
What Is a VPN and How Does It Work?
A plain-English explanation of what VPNs are, how they work, what they actually hide, and why millions of people use them in 2026 — including for accessing AI tools.
How to Change Your IP Address (4 Methods)
Need to change your IP address? The right method depends on why. This guide covers VPNs, proxies, Tor, and router resets — with a decision guide to pick the one that fits your situation.
What Are HTTP Headers? A Complete Guide
HTTP headers are invisible metadata sent with every web request and response. Learn what they are, which ones matter, and what yours reveal about you.
What Is My IP Address? Meaning, Types & What It Reveals
Find your IP address instantly and learn what it means — public vs private, IPv4 vs IPv6, what your IP reveals about you, and how to protect your privacy.
What Is My ISP? How to Find Your Internet Provider
Your ISP is the company that connects you to the internet. Learn what an ISP does, how to find yours instantly, what it can see about you, and how to switch.
What Can Someone Do With Your IP Address?
Learn what information your IP address reveals, what someone can realistically do with it, and how to protect yourself.
How to Hide Your IP Address: 5 Proven Methods
Complete guide to hiding your IP address using VPNs, Tor, proxies, and more. Learn which method is best for your use case.
What is WHOIS and How to Use It: Complete Guide
Learn what WHOIS is, how to use WHOIS lookup tools to find domain owner information, and why WHOIS matters for security and research.
IPv4 vs IPv6: Key Differences Explained (2026 Guide)
IPv4 vs IPv6 — clear comparison of address formats, speed, security, and adoption. Includes a side-by-side table and a live checker to see which one you're using.
What is DNS and How Does It Work? A Simple Explanation
Learn how DNS translates domain names to IP addresses, the different record types, and why DNS matters for your internet experience.
How to Check if Your VPN is Actually Working
Step-by-step guide to verify your VPN is properly hiding your IP address and not leaking data through DNS, WebRTC, or IPv6.