Free IP lookup: location, ISP and owner of any address
This IP lookup tool tells you where an internet address is registered and who operates it. Enter any IPv4 or IPv6 address — or a domain name such as wikipedia.org — and you get the country, region and city, the internet service provider (ISP), the organisation and autonomous system number (ASN), the local time zone, and country facts such as currency and calling code.
It is useful for checking an unfamiliar sign-in alert, tracing the sender in an email header, reviewing server or firewall logs, confirming which data centre a website runs from, or making sense of an address a customer gives you. When you enter a private or reserved address, the tool explains exactly which range it belongs to and why it cannot be located, instead of returning a confusing error.
How to use the IP Lookup
- Type or paste an IP address or domain into the box. Full URLs and addresses with a port, such as 203.0.113.5:8080, are cleaned up automatically.
- Press “Look up” or Enter. Leave the box empty, or press “My IP”, to look up your own connection.
- Read the location, network, time zone and country facts. Domains that resolve to several addresses show each one as a button you can switch between.
- Use the copy buttons to grab the IP or a full text summary, and the map button to see the area on OpenStreetMap.
- Jump back to earlier searches from “Recent lookups”, which is saved only in your browser.
IP Lookup features
IPv4, IPv6 and domains
Domains are resolved with DNS over HTTPS, following CNAME aliases, and every A and AAAA address is listed.
Private range detector
Recognises RFC 1918 private networks, carrier-grade NAT, loopback, link-local, documentation, multicast and IPv6 unique local addresses before any request is sent.
Network ownership
ISP, organisation, ASN and provider domain, with a link to the AS’s routing details.
Time zone and currency
The IP’s time zone with current local time and daylight-saving status, plus the country’s currency, calling code, capital and neighbours.
Embedded IPv4 support
IPv4-mapped (::ffff:a.b.c.d) and NAT64 (64:ff9b::/96) addresses are unwrapped and the real IPv4 address is looked up.
Shareable results
The address you looked up is added to the page link, so you can bookmark it or send it to a colleague.
What an IP lookup can and cannot tell you
Geolocation databases are built from regional internet registry records, routing data and measurements. Country-level results are reliable for most addresses; city-level results are an estimate that is often right for fixed broadband but can be far off for mobile networks, satellite links, corporate VPNs and cloud servers. The coordinates mark the centre of an area, not a building.
An IP lookup never reveals a person’s name, street address or phone number. Only the ISP holds the record of which customer used an address at a given time, and it releases that only to law enforcement with legal authority. If you are dealing with fraud or harassment, report it to the platform involved and the police rather than trying to trace someone yourself.
Private and reserved IP ranges
These ranges are set aside by the IETF and IANA. They are never assigned to a specific organisation on the public internet, so a lookup cannot return a location for them.
| Range | Purpose | Defined in |
|---|---|---|
| 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16 | Private networks (home and office LANs) | RFC 1918 |
| 100.64.0.0/10 | Carrier-grade NAT inside ISPs | RFC 6598 |
| 127.0.0.0/8, ::1 | Loopback (this device) | RFC 1122, RFC 4291 |
| 169.254.0.0/16, fe80::/10 | Link-local / automatic addressing | RFC 3927, RFC 4291 |
| 192.0.2.0/24, 198.51.100.0/24, 203.0.113.0/24, 2001:db8::/32 | Documentation and examples | RFC 5737, RFC 3849 |
| 224.0.0.0/4, ff00::/8 | Multicast groups | RFC 5771, RFC 4291 |
| fc00::/7 | IPv6 unique local (private) addresses | RFC 4193 |
| 240.0.0.0/4 | Reserved for future use | RFC 1112 |
ISP, organisation and ASN explained
The ISP is the company that provides the connection. The organisation is the customer or business the block is registered to — a large company or university can hold its own addresses even when another firm carries the traffic. The ASN identifies the network that announces the address on the internet’s routing system (BGP); AS13335 is Cloudflare and AS15169 is Google, for example. When a hosting or cloud ASN appears for a residential-looking login, the visitor is probably using a VPN, proxy or server.
To see the records behind a domain — mail servers, TXT records and name servers — use the DNS Lookup tool. To check your own connection, open What Is My IP, and to split a long link into its parts, try the URL Parser.
IP Lookup FAQ
How accurate is IP lookup location?
Country is correct for the vast majority of addresses. Region and city are best-effort estimates: often accurate for home broadband, but mobile, satellite, VPN and cloud addresses can appear hundreds of kilometres away from the real user.
Can I find someone’s home address from their IP?
No. An IP lookup shows the provider and an approximate area only. The link between an address and a subscriber is held privately by the ISP and is disclosed only to authorities with a legal order.
Why does my 192.168.x.x address say it can’t be geolocated?
Addresses in 192.168.0.0/16, 10.0.0.0/8 and 172.16.0.0/12 are private ranges used inside local networks worldwide. They are not unique and never travel across the internet, so there is nothing to locate. Look up your public IP instead.
Can I look up a website’s IP address?
Yes. Enter the domain (or paste the full URL) and the tool resolves it through Google Public DNS, lists every IPv4 and IPv6 address, and looks up the first one. Large sites behind a CDN return the location of the CDN’s server, not the company’s office.
What is an ASN?
An autonomous system number identifies one network on the internet’s routing system. Every ISP, cloud provider and large company that runs its own network has one, and it tells you who is responsible for traffic from an address.
Is this IP lookup tool free?
Yes. It is free with no account or daily limit on our side. The underlying ipwho.is service may briefly rate-limit very heavy use from one network; if that happens, wait a minute and press Retry.