Fast, private, accurate IP lookup
Port forwarding tells your router to let the internet reach one device inside your network. When you actually need it, why UPnP quietly opens doors on its own, what an open port really exposes, and how to forward safely — or skip it entirely.
Your devices juggle two addresses at once: a private IP only your home network knows and a public IP the whole internet sees. How NAT bridges the two, how to find each one, which one websites actually track, and why “private” doesn’t automatically mean safe.
Most “dynamic” home IPs don't actually change for months — and a static IP won't make anything faster. How DHCP leases really work, when a static IP is worth paying for, why DDNS is the free answer for most people, and a two-minute test to find out which one you have.
Traceroute output is one of the most misread things in networking. What each hop means, why a spike at hop 7 usually isn't a problem, what rows of asterisks really tell you, and how to find the hop where your connection actually goes slow.
Your router is port-scanned thousands of times a night. What open ports are, why RDP, Telnet, SMB and UPnP are the doors attackers try first, and how to scan your own public IP from the outside.
Someone has your IP address — now what? What they can really do (location, ads, DDoS, scans), what they can't (hack you, find your home), and how to protect it.
Email headers reveal where a message really came from. How to open the full header in Gmail, Outlook or Apple Mail, what SPF, DKIM and DMARC mean, and the red flags that expose a fake.
We ran 15 IPs through three geolocation APIs. All three agreed on the country every time — and placed the same address up to 3,859 km apart. The raw data, and the four mechanisms behind every disagreement.
Your VPN can quietly leak your real IP through DNS, WebRTC or IPv6 even when it looks connected. Here's how to test your VPN in five minutes and fix the leaks you find.
Cybercriminals are quietly routing traffic through home routers, streaming boxes, and free VPN apps as "residential proxies." Here's how it works, why the FBI is warning about it, and how to check your own network.
From August 2026 Google starts using IP addresses for ad measurement and personalisation in the EEA, UK and Switzerland. Here's what actually changed, how it relates to fingerprinting, and practical ways to limit IP-based tracking.
VPN downloads are spiking worldwide as age-verification laws roll out across the UK, US, and beyond. Here's what's driving it, the privacy trade-offs, and how to check your VPN actually works.
If port forwarding doesn't work and you can't reach your home network from outside, CGNAT is probably why. Learn what it is, how to detect it, and the best workarounds.
If emails aren't delivering or websites are blocking you, a blacklisted IP might be the reason. Learn what blacklists are, how to check yours, and how to get removed.
Both hide your IP address — but they work very differently. Learn the types of proxy servers, when to use each, and why a VPN offers stronger protection for most users.
A practical, jargon-free checklist covering passwords, two-factor authentication, scam recognition, public Wi-Fi, privacy settings, and more. No technical knowledge needed.
What actually happens on coffee shop, airport, and hotel Wi-Fi — and the practical steps that protect you, including when a VPN is essential.
Learn how VPNs encrypt your traffic and hide your IP address, when you should use one, how to verify it's working — and what VPNs genuinely cannot do.
DNS leaks can expose your browsing activity even when your VPN is running. Learn what causes them, why they matter, and exactly how to test for and fix them.
What your IP address actually reveals about you, the difference between public and private IPs, how dynamic and static IPs work, and how to hide your IP if needed.
Browser fingerprinting tracks you without cookies — using your device's screen, fonts, and hardware. It persists through incognito mode and VPNs. Learn how it works and how to reduce it.
How artificial intelligence is reshaping data collection, surveillance, and personal privacy — and practical steps to reduce the data available for AI systems to use against you.
Why IPv4 ran out of addresses, how IPv6 solves the problem, key differences in format and security, and what the transition means for your privacy — including VPN IPv6 leaks.
Most people only check their IP when something goes wrong. These are the 8 specific situations where checking it proactively protects your privacy and fixes real problems.