IP / geolocation lookup
Enter an IP or hostname - we'll show country flag, ASN/ISP and reverse DNS. No registration, no logs.
How IP geolocation works
If you enter a hostname, the tool first resolves it to an IP address. The IP is then looked up in a geolocation database (a local DB-IP Lite copy for the country) and enriched with the ASN, provider and city from ipinfo.io. Reverse DNS (PTR) is read directly from the DNS system.
Geolocation databases map IP ranges to locations based on registry data (RIR allocations), routing information and provider disclosures. They tell you where the network operator announces the range - which is usually, but not always, where the device actually sits.
The ASN (autonomous system number) identifies the network that announces the IP range on the internet - for example a hosting company, a telecom operator or a cloud provider. When investigating logs, the ASN is often more telling than the city: it distinguishes a residential ISP from a data centre.
How to read the results
Reliability differs per field:
- Country - the most reliable field, correct for the vast majority of addresses.
- City/region - approximate. Databases often place an IP at the provider's regional hub, tens of kilometres away. Treat it as an area, not an address.
- Organization/ASN - who operates the network. A hosting ASN on a login attempt in your logs is a red flag; a residential ISP is normal for real users.
Common problems
Wrong city shown. Databases lag behind network changes and often register the ISP's central office instead of the user's town. Country-level accuracy is high; street-level accuracy does not exist for IP geolocation at all.
VPN, proxy or mobile network. A VPN or proxy shows the exit server's location, not the user's. Mobile carriers using CGNAT aggregate thousands of users behind one IP, so the location reflects the carrier's gateway.
No PTR record. Reverse DNS is optional and many networks do not maintain it. A missing PTR is not suspicious by itself - but mail servers without a valid PTR will have trouble delivering email.
Frequently asked questions
How accurate is IP geolocation?
Country detection is reliable. City detection is approximate and can be off by tens of kilometres. IP geolocation can never identify a street or a person - it locates the network, not the device.
Can an IP address identify a specific person?
Not from public data. Only the internet provider can link an IP and a timestamp to a customer, and it does so only on a lawful request. Public geolocation shows the network operator and an approximate area.
What is an ASN?
An autonomous system number identifies a network that participates in internet routing - every ISP, hosting provider and large company has its own. It is the most stable clue about who an IP belongs to, because IP blocks rarely change their announcing AS.
Why does my own IP show a different city than where I live?
Your provider routes you through a regional aggregation point and the databases place the whole range there. With CGNAT or mobile data, the visible IP may be shared by an entire region.
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About this tool
Enter any IP or hostname to see its country, the network it belongs to (ASN and ISP) and its reverse DNS name. It is handy for placing a visitor from your logs or confirming who hosts a service - geolocation is approximate at city level and never identifies a person.