IP lookup
Get geolocation, ISP, organization, and network information for any IP address.
How to read an IP lookup
An IP lookup answers who operates an address and roughly where it sits on the network. It does not identify a person, and the location is an estimate, so the useful fields are the ones about ownership rather than the map.
- ISP and organization tell you who runs the address. These often differ: the ISP may be a large carrier while the organization is the customer renting the range. The organization is usually the more informative of the two.
- AS number identifies the autonomous system announcing the address, which is the most reliable identity on this page. Two addresses in the same AS belong to the same network operator even when everything else differs.
- Reverse DNS is the name the address maps back to. Hosting providers usually set something descriptive here, and a missing reverse DNS on a mail server is a real deliverability problem.
- Country, region and city come from a geolocation database. Country is usually right. City is frequently wrong, sometimes by hundreds of miles, because it reflects where the address is registered rather than where the hardware is.
What this is useful for
- Confirming a site moved. Look up the domain and check whether the organization matches the host you expect. A migration that looks finished but still resolves to the old provider shows up immediately.
- Investigating traffic in your logs. The AS and organization separate a real visitor from a datacenter, a scraper, or a cloud function. Repeated hits from a hosting AS are rarely people.
- Checking a mail server before you trust it. Reverse DNS that does not match the sending domain is a common reason mail gets filtered.
- Deciding whether to block. Blocking a single address is usually pointless, because the next request comes from a neighbour in the same range. Knowing the AS tells you the real scope of what you are dealing with.
Common questions
How accurate is IP geolocation?
Country level is usually reliable. City level often is not, because the data reflects where the address block is registered rather than where the device is. Treat the city as a hint and never as evidence. VPNs, mobile carriers and large ISPs all routinely report locations far from the actual user.
Can I find out who someone is from their IP address?
No. A lookup identifies the network operator, not a person. Only that operator holds the subscriber record behind an address, and they release it to law enforcement on legal process, not to the public. Anything claiming to name an individual from an IP is guessing.
Why does the location look wrong?
Geolocation databases map address ranges to registration data, which lags reality. A carrier can route traffic through a hub in another state, and an address reassigned between regions can take months to update. VPNs deliberately report their exit node instead of you.
What does the AS number tell me?
It identifies the network announcing the address to the rest of the internet. It is the most stable identifier on this page and the best way to tell whether traffic comes from a residential ISP, a cloud provider or a hosting company. That distinction matters more than location for most abuse decisions.