Where IP Location Data Comes From
An IP address does not contain a location. IP geolocation databases infer a location by combining several sources: registry data that says which organization received an address block and in which country, routing information, network measurements such as latency from known points, and data shared by internet providers. The result is an estimate that is stored in a database and looked up when you query an address.
Our IP Location tool uses the MaxMind GeoLite2 City and ASN databases, which we update weekly.
Accuracy by Level
- Country: usually correct, because address blocks are assigned to organizations in a specific country.
- Region or state: often correct for residential broadband, less reliable for mobile and business connections.
- City: frequently approximate. The “city” may be the location of the provider’s equipment, which can be in a different city from the user.
- Street address: not possible from public IP data. Only the internet provider knows which subscriber used an address at a given time.
What the Accuracy Radius Means
Next to the coordinates, our tool shows an accuracy radius, for example “~20 km” or “~1000 km”. This is the database’s own estimate of how far the real location may be from the coordinates. A small radius means the database is fairly confident; a large radius means it only knows the general area. When the radius is very large, the coordinates are often just the geographic center of a country — not a real place where the user is.
This is why some lookups land in the middle of a field or a lake. The point is a placeholder, not an address.
Why Your IP Shows the Wrong City
Mobile Networks
Mobile operators route traffic through a small number of gateways. A phone in one city may appear to be in another city hundreds of kilometers away, where the operator’s gateway is located.
Carrier-Grade NAT (CGNAT)
Many providers share one public IPv4 address among many customers using carrier-grade NAT. The shared address cannot point to a single household, so its location is usually generalized.
VPNs and Proxies
A VPN replaces your IP address with the address of the VPN server. A geolocation lookup shows the server’s location, which is exactly what VPN users want.
Corporate Networks and Cloud Providers
Company traffic often leaves the internet through a central office or a security service in another city or country. Cloud addresses are located at data centers.
Reassigned Address Blocks
Address blocks are sometimes sold or moved between regions. Databases catch up over time, but recently moved blocks can show the old location for a while.
Is IP Geolocation a Privacy Risk?
An IP address reveals your approximate area and your internet provider, which is why many privacy laws treat IP addresses as personal data. It does not reveal your home address or identity on its own. Linking an address to a person requires records held by the internet provider, which are normally only released through legal processes.
Good Uses and Bad Uses
- Good: choosing a default language or currency, showing nearby content, detecting suspicious logins from a new country, analytics at country level.
- Bad: treating the city as exact, locking users out because the city looks wrong, or using IP location as proof of where a person was.
Correcting Wrong Data
If your own address is consistently placed in the wrong country, the database provider usually offers a correction form. Your internet provider can also publish geolocation feeds (RFC 8805) that databases use. Changes take time to appear because databases are rebuilt periodically.
Related Tools
- ASN Lookup – find the network behind an address.
- Reverse DNS Lookup – the hostname of an address often hints at its city or role.
- IP History – see which addresses a domain has used.