About
Answers derived from the public record, compiled daily on our own servers.
What this site is
ipaddress.im answers the question its domain asks: what address is the internet seeing you as, and what does the public record say about it. Alongside that it carries the lookups that question leads to — WHOIS and RDAP registry records, autonomous system numbers, DNS, blocklist status, and whether anything on your own address answers from outside.
Where the answers come from
Every routing, registry and AS-name answer on this site is read from datasets we compile ourselves and serve from our own disk. There is no commercial geolocation API behind them, no reseller, and no account that could be cancelled or repriced.
The sources are all public and free: the global BGP table published by APNIC's Thyme project, the delegated-extended files from the five regional internet registries, IANA's RDAP bootstrap, and GeoNames for place coordinates. They are rebuilt daily into flat binary indexes, so a lookup costs one binary search — and, more to the point, costs zero outbound requests. Nobody else learns that you were here.
The live queries are the exceptions, and they are the ones you ask for explicitly: RDAP and WHOIS go to the registry that holds the record, and DNS goes to a resolver. Those are the authoritative sources, and going anywhere else for them would mean showing you a copy instead of the record.
What we will not do
We will not show a city for an address unless the network's own operator published one under RFC 8805. Everything else on the market is an estimate, and an estimate rendered as a pin on a map is a claim we cannot stand behind. Where we have nothing, the page says so.
We do not offer a way to scan an address you do not control. The port check runs against the address your own request arrived on and has no field to point it elsewhere.
We do not sell, and have never held, a record linking a person to an address over time. The address history feature keeps its list in your browser for exactly that reason.
Corrections
If a record here is wrong, it is usually wrong at the source, and the contact page is the fastest way to tell us which one. Registry data we can only reproduce; where we have introduced the error ourselves we would like to know.