Articles
Practical guides, technical explanations and actionable advice on IP addresses, network security and online privacy.
Does airplane mode change your IP address?
Toggling airplane mode can change your mobile IP address. Here is why it works, when it does not and what it actually changes.
What is an AI agent?
An AI agent can plan, use tools and act autonomously. How they work, architecture, use cases, limitations: everything you need to know in 2026.
How to stop your ISP from seeing the sites you visit
Your internet service provider can see every site you visit. Encrypted DNS, VPN, HTTPS, Tor: here is how to protect your browsing activity.
Who controls the internet and how IP addresses work
ICANN, IANA, regional registries: discover who actually runs the internet, how IP addresses are assigned and why nobody owns the network.
How to change DNS on Android
Changing DNS on Android improves speed, privacy and access to certain sites. Here is how to do it on Android 9+ and older versions.
How does domain name registration work?
Registrar, registry, WHOIS, ICANN: find out what actually happens when you register a domain name and how the whole system works behind the scenes.
The 10 most used Nslookup commands
Nslookup is the built-in DNS diagnostic tool on Windows, Mac and Linux. Here are the 10 most useful commands with practical examples for every situation.
What is a DNS SOA record?
The SOA record defines a DNS zone's authority and controls how secondary servers synchronise. Learn how to read it, configure it and avoid common mistakes.
How many IPv4 addresses are there?
There are exactly 4,294,967,296 IPv4 addresses. Learn why they are nearly all exhausted, how they are distributed, and what it means for you.
How to fully disable IPv6 and switch to IPv4-only mode
Disabling IPv6 can fix connection problems, VPN leaks or network slowdowns. Here is how to do it cleanly on Windows, Mac, Linux and your router.