What Is My IP
Your public IP, reverse DNS, and approximate geolocation. Detected server-side from your request — we do not log it.
What this address really is
This tool reads the address your connection presents at the edge, from the CF-Connecting-IP header with X-Forwarded-For as a fallback, and shows it back to you. It is not a scan of your machine. It reports the address the requesting edge could see, which is not always the same thing as the one on your interface.
Behind a proxy, a corporate NAT or a VPN, the returned value is the exit point, not the address on your laptop. That is exactly what a remote server would observe, so it is the right number for allowlisting, but the wrong one for troubleshooting a local NIC. Do not use it to confirm a server's outbound identity during a migration either, since traffic may egress over a different path than it arrives on.
Dual-stack clients can be handed two different addresses in the same session. A v4 address and a v6 address may come from separate upstreams and geolocate to different places. If the result does not match your expectation, check whether the request left over IPv6. A resolver or load balancer in front of the client can also mask which stack was used.
One further trap: an address inside 100.64.0.0/10 is carrier-grade NAT, not a public IP. It is not globally routable, and services keyed on a public address will never see it. Before you firewall or allowlist based on this page, verify the value is stable, since mobile and dynamic connections change it and a rule tied to a stale address fails quietly.
Related reading
- What is my IP address, and why does it matter?Your public IP is the address the rest of the internet uses to talk to you. Here's what it reveals, what it doesn't, and how to check it.
- Subnet calculator cheatsheet: CIDR, masks, and host countsA quick-reference for IPv4 subnet math — how to read a CIDR, what the mask actually means, and the easy way to count usable hosts.
- How to read an open port (and when to actually worry)An 'open port' isn't a vulnerability by itself — it's information. Here's how to tell whether a port being open is fine, suspicious, or actively dangerous, and what to do about each case.