free tool
IP address lookup
Find where any IP address is and which network it belongs to. Enter a domain to look up every address it points to.
- free
- no account
- runs on our server
How it works
What an address tells you.
A lookup reads the address in two databases: one places it on the map, the other names the network that announces it, by its autonomous system number (ASN) and organisation. A reverse DNS query adds the address's hostname when the network has set one.
For a domain, our server resolves its DNS records first and looks up each address. Large sites answer from many addresses, often through a CDN like Cloudflare or Fastly, so the location you see is the CDN's, not the company's.
- Country, region and city, with approximate coordinates on the map.
- ASN and organisation: the provider, host or carrier behind the address.
- The reverse DNS name, when the network sets one.
- Every lookup is kept in the page link, so you can share it or come back to it.
Questions
An autonomous system number identifies a network on the internet, such as an internet provider, a hosting company or a mobile carrier. Every public address is announced by one. Proxy users target by ASN to get IPs from one specific carrier.
IP databases estimate the city from how the network is registered and routed. Many addresses are placed at the provider's nearest hub, and mobile carriers often route whole regions through one city. The country is right far more often than the city.
Yes. Enter it with or without https://. Our server resolves it and shows up to 8 of its addresses, IPv4 first.
Locations and networks come from the DB-IP Lite databases, refreshed every month on our server. Hostnames come from a live reverse DNS query.
Yes, with no account. Each address can run up to 30 lookups a minute.
Addresses like 10.0.0.1, 172.16.0.1 and 192.168.1.1 are only used inside home and office networks. They never appear on the internet, so they have no location; the lookup says what kind of address it is instead.
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