What Is My IP
Shows the public IP address your connection is using, as seen from the outside. The result appears as soon as the page loads — there is nothing to type and no button to press.
Looking up your address…
Shows the public IP address your connection is using, as seen from the outside. The result appears as soon as the page loads — there is nothing to type and no button to press.
Alongside the address you get the family it belongs to (IPv4 or IPv6), what kind of address it is, the reverse DNS name if your provider publishes one, and the source port the connection came from.
Your address is looked up for this one request and shown back to you. It is never written to a database, and the answer is marked so that no cache or CDN can keep it and hand it to somebody else.
Use cases
- Checking which address a site sees before allow-listing it on a firewall
- Confirming a VPN is actually carrying your traffic
FAQ
Why do I only see one of IPv4 or IPv6?
A connection uses one or the other, so only the address you actually arrived on can be seen. If you reach this page over IPv6, no IPv4 address exists for that connection to report.
Is my IP address stored?
No. It is read from the request, shown back to you, and nothing is written down. The response is marked no-store so it cannot be cached.
Why does it say my address is private or loopback?
Because the address reaching us is not a public one — usually you are on the same machine or network as the server, which happens during local development.
What is the reverse DNS name?
The name your provider has published for your address. Many providers, especially on mobile networks, publish nothing, in which case the field is empty.
Why does the port change every time?
Your computer picks a fresh source port for each connection, so it is expected to differ on every visit.