IP address lookup
Find out which network an IP address belongs to, the organisation announcing it, roughly where it is routed and its reverse DNS name.
How to read an IP lookup
ASN and organisation
Every routed block of addresses belongs to an autonomous system — a network with its own number, such as AS13335 for Cloudflare. This is the most factual part of the result: it tells you whether an address belongs to a home broadband provider, a datacentre, a mobile carrier or a cloud platform.
Geolocation is approximate
IP geolocation is inference, not measurement. Country level is usually right; city level is a good guess that fails routinely for mobile networks, VPNs and large ISPs that route regionally. Never treat it as evidence of where a person is.
Reverse DNS
The PTR record often gives away more than the geolocation: hostnames like mail.example.com or ec2-52-...compute.amazonaws.com tell you exactly what kind of machine you are looking at. A missing PTR on a mail server is itself a deliverability problem.
Datacentre or residential?
We flag hosting and proxy ranges where the data supports it. Traffic that claims to be a home visitor but comes from a cloud range is usually a bot or a VPN.
FAQ
Can I find a person from an IP address?
No. You can identify the network operator. Linking an address to a subscriber requires a legal request to that operator.
Why does my own IP show the wrong city?
Your ISP routes traffic through a regional hub and the databases record the hub. It is normal to appear fifty miles from where you are.
What is a reverse DNS record for?
Mainly email. Receiving mail servers check that the sending IP has a PTR record matching its hostname; without one, messages are far more likely to be rejected.
Related reading
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