This is your IP address.

What is an IP address?

An IP address is the number that makes your connection reachable on the internet. Every website you visit sees that number, otherwise the page could not be sent back to you. You get it from your internet provider. It usually belongs to your whole home or office: all devices on the same Wi-Fi share it.

What can someone do with my IP address?

Less than people often think. An IP address reveals your provider and roughly the region, but not your name or your home address. Only your provider knows which customer belongs to an address, and only hands that over when the law requires it.

Why is the location wrong?

The location comes from a database that records, per block of addresses, where a provider hands them out. That is often the place of one of your provider's hubs, not the place where you live. On mobile data or with a VPN it can be a different city or a different country.

What is the difference between IPv4 and IPv6?

An IPv4 address looks like 84.26.10.5. There are just over 4 billion of them, and they have run out. IPv6 is the successor, with much longer addresses such as 2a02:a44f:1c2::1. Many connections have both. Which one your browser uses depends on the site you visit.

Does my IP address change?

With most providers you keep the same address as long as your modem stays on, sometimes for months. After a restart or an outage you may get a different one. A fixed IP address is an option on many business plans.

How do I use iptje in a script?

Request iptje.nl with curl, wget or PowerShell and you get just your address back, as text.

With iptje.nl/json you also get provider and location, as JSON. Use it in moderation: ask too often and you get no answer for a while.