How it works
When this page loads, your browser asks beancuit's own server function for the address it sees. That address is the public IP of your home router, office network, mobile carrier or VPN exit — the same address websites see when you visit them. Pressing Check again repeats the lookup, which is useful after switching networks or turning a VPN on or off.
Your device → beancuit server function → the address it saw → shown here
IPv4 and IPv6
- IPv4: four numbers like 203.0.113.25. Most homes still use this through carrier-grade NAT, so neighbours may share one address.
- IPv6: a longer address like 2001:db8::1. Mobile networks and newer ISPs hand these out, often one per device.
Tips
- If the address changes after enabling a VPN, the VPN is working; if it stays the same, traffic is leaking outside the tunnel.
- The lookup needs our server function. On a static preview without functions it reports that the service is unavailable.
- Everything else on this page runs in your browser; only the lookup itself touches our server.
Privacy
Your address is sent to beancuit's server function only when this page loads or when you press Check again, and the function returns it to your browser without storing anything beyond Cloudflare's standard request handling.
Standards and sources
- IPv4: RFC 791; IPv6: RFC 8200
- Address seen by the server: Cloudflare cf-connecting-ip and standard proxy headers
Last reviewed October 12, 2026
Frequently asked questions
What is my public IP address?
It is the address the rest of the internet sees: your router, office network, mobile carrier or VPN exit. This page asks our server which address your request came from and shows it back to you.
Why did my address change?
Home connections get a new address on reconnect, mobile networks change it as you move, and a VPN replaces it with the exit server's address. Press Check again after switching networks to see the current one.
How do I know my VPN is working?
Note your address with the VPN off, turn it on, then press Check again. A different address and usually a different country mean traffic goes through the tunnel. If nothing changed, traffic is leaking outside it.
Is my address stored anywhere?
No. The server function reads the address from your request, sends it back to your browser and keeps nothing. See the privacy page for details.