About the IP Address Lookup
The IP Address Lookup shows the public IP address your device uses on the internet, and lets you look up any other IPv4 or IPv6 address. For each public address you see the country, region and city it is registered to, the network that owns it (its ASN and organization), and the address in other forms such as decimal, hex and its reverse DNS name.
It helps when you set up a firewall rule or an allow list, check whether a VPN is working, look into a suspicious login or a log entry, or just want to know which provider an address belongs to. Private and special addresses, such as 192.168.1.1 on a home network, are recognized and explained instead of being given a made-up location.
IP location is always approximate. At best it points to a city; often it shows where the internet provider or the network operator is registered, which can be far from the actual device. Location and network data come from DB-IP's free Lite databases (IP Geolocation by DB-IP, licensed under CC BY 4.0).
How to use it
- See your own IPYour public address appears at the top as soon as the page loads, with its approximate place and network.
- Show the detailsClick Show details for the full breakdown of your own address.
- Look up another addressPaste any IPv4 or IPv6 address into the box and press Look up or Enter.
- Try an exampleThe buttons fill in well-known addresses such as Google DNS, Cloudflare DNS, Quad9 and a typical home router.
- Read and copyCheck the location, network and the other formats on the right, and copy what you need.
Key features
Your public IP
The address websites see when you connect, which is usually your router's or your provider's, not your device's local address.
IPv4 and IPv6
Both versions, including shortened IPv6 forms like 2606:4700:4700::1111, which are also shown in full.
Network owner
The autonomous system number (ASN) and the organization behind it, such as AS15169 Google LLC.
Special addresses explained
Private, loopback, carrier-grade NAT, documentation, link-local and IPv4-mapped addresses are named instead of being located.
Other formats
Decimal, hex, binary, the IPv4-mapped IPv6 form, and the in-addr.arpa or ip6.arpa name used for reverse DNS.
No outside services
Addresses are checked against a copy of the database on the server, so your lookups are not passed on to a third party. Requests are rate-limited to prevent abuse.
Examples
Well-known public addresses
At the time of writing (October 2026), the database gives these results:
| Address | Location shown | Network |
|---|---|---|
| 8.8.8.8 | Mountain View, California, US | AS15169 Google LLC |
| 1.1.1.1 | Sydney, New South Wales, AU | AS13335 Cloudflare, Inc. |
| 9.9.9.9 | Berkeley, California, US | AS19281 Quad9 |
| 2606:4700:4700::1111 | Montreal, Quebec, CA | AS13335 Cloudflare, Inc. |
These DNS services answer from hundreds of locations at once (a technique called anycast), so the city shown is just the place the address is registered to. Cloudflare's IPv4 and IPv6 resolvers even land on different continents. This is the clearest example of why IP location is approximate.
Private and special addresses
| Address | Shown as |
|---|---|
| 192.168.1.1 | Private network |
| 100.64.0.1 | Carrier-grade NAT (shared) |
| 127.0.0.1 | Loopback (this device) |
| 2001:db8::1 | Documentation example |
| ::ffff:8.8.8.8 | IPv4-mapped address |
None of these can be located: they exist only inside a local network, inside a provider's network, or have a special purpose.
One address, several forms
8.8.8.8 is also 134744072 in decimal, 0x08080808 in hex, and ::ffff:8.8.8.8 as an IPv4-mapped IPv6 address. Its reverse DNS name is 8.8.8.8.in-addr.arpa; for 192.168.1.1 it is 1.1.168.192.in-addr.arpa, with the parts reversed. IPv6 addresses are expanded in full, so 2606:4700:4700::1111 becomes 2606:4700:4700:0000:0000:0000:0000:1111.
Tips
- To check a VPN, note your IP and location, connect the VPN and reload the page. Both should change to the VPN server's address and location.
- If your location looks wrong, that is normal. Many providers route traffic through a regional hub, so the city shown can be a large city hours away.
- For a firewall or allow list, use the exact address shown at the top. Home addresses can change when your router restarts, unless your provider gives you a static IP.
- An address starting with 100.64 to 100.127 on your router usually means carrier-grade NAT: you share a public address with other customers.
- To see what a web server sends back, rather than where it is, use the HTTP Headers Viewer.
Common mistakes and limits
- Treating the location as a street addressIP data never gives a home address. The coordinates point to the center of a city or region, and the map link is only a rough area.
- Forgetting VPNs, proxies and relaysWith a VPN, a proxy, a corporate network or a privacy relay, websites see that service's address and location, not yours. The lookup shows exactly what they see.
- Using IP location to identify a personAn address belongs to a network, often shared by many people, and changes over time. Only the provider can link it to a customer, and only through a legal process.
- Looking up 192.168.x.x to find a devicePrivate addresses are reused in millions of homes and offices. They have no location and say nothing outside your own network.
- Expecting mobile IPs to match your townMobile carriers often send traffic through a few large gateways, so phones on cellular data can appear hundreds of miles away.