About your IP address
What is an IP address?
An IP (Internet Protocol) address is the number that identifies your connection on the internet. Every website you visit sees it, because it needs to know where to send the response. The address shown above is your public IP address: the one the rest of the internet sees, usually assigned by your internet provider or mobile operator.
Public vs. private IP addresses
Devices on your home or office network have private addresses such as 192.168.x.x or 10.x.x.x, which only work inside that network. Your router shares one public address between them, so every device on the same network usually shows the same IP address here.
IPv4 vs. IPv6
An IPv4 address is four numbers like 203.0.113.42, and there are only about 4.3 billion of them. IPv6 addresses are longer and written in hexadecimal, like 2001:db8::1, and there are enough for every device. Many connections have both; this page shows the one your browser used to reach us.
Frequently asked questions
How do I find my public IP address from the command line?
Run curl https://ipnu.dk/ip in a terminal on Windows, macOS or Linux. It returns just your IP address as plain text, and https://ipnu.dk/json returns everything on this page as JSON.
Can someone find my location from my IP address?
Only roughly. An IP address usually reveals your internet provider and an approximate city or region, but not your street address. Only your provider can link an IP address to a specific customer.
Why does my IP address change?
Most home and mobile connections get a dynamic IP address that the provider can change, for example when your router restarts. Businesses can usually get a static IP address that stays the same.
How can I hide my IP address?
A VPN, a proxy or the Tor Browser sends your traffic through another server, so websites see that server's IP address instead of yours. Reload this page after connecting to check that it works.
What do Do Not Track and Global Privacy Control mean?
They are signals your browser can send to ask websites not to track you or sell your data. Do Not Track is old and mostly ignored. Global Privacy Control is newer and is recognised by some privacy laws, for example in California. The Privacy signals card above shows whether your browser sends them.