🌍 IP Address Lookup
Look up any IP address to find its geolocation, ISP, timezone, and more. Free IP lookup tool powered by ipapi.co. No signup required.
What IP Address Lookup Does
This tool does not locate a device. It looks up how a public IP address is registered and estimates a location from that registration data plus a commercial geolocation database — two different things that get conflated constantly. An IP address identifies a network interface on the internet, not a street address, and the "location" a lookup returns is the geolocation provider's best guess about where the connection to the internet enters the world, which is frequently the city of an ISP's regional hub rather than the building the device sits in.
The chain behind a result is: IANA allocated large IPv4 blocks to five Regional Internet Registries — ARIN, RIPE NCC, APNIC, LACNIC and AFRINIC, each responsible for one region of the world — which in turn allocate smaller blocks to ISPs and large organizations. Those allocations are recorded in public WHOIS records, and it is those records, not GPS, that tell a lookup tool who operates a given block and roughly where. A commercial geolocation database (this tool queries ipapi.co, which aggregates registry data with additional signals) then refines that registry-level guess down toward a city and coordinate pair.
The IANA free pool of unallocated IPv4 space ran out on February 3, 2011, when the last five /8 blocks were split one each among the five RIRs. ARIN exhausted its own pool in 2015 and RIPE NCC in 2019; APNIC has been rationing single addresses at a time for years. That scarcity is why almost every residential and mobile connection today sits behind carrier-grade NAT, sharing one public IP address across many customers — which is the single biggest reason IP geolocation is approximate rather than precise, addressed in the limits section below.
How to Use IP Address Lookup
- Enter an IP address (or leave blank for your own IP)
- Click "Lookup" to query the IP
- View geolocation, ISP, timezone, and network details
- Copy the results if needed
The Five Regional Internet Registries
Every IP lookup ultimately traces back to one of these five allocation authorities.
| Registry | Region covered | Headquarters |
|---|---|---|
| ARIN | United States, Canada, parts of the Caribbean | Chantilly, Virginia, US |
| RIPE NCC | Europe, Russia, Central and Western Asia | Amsterdam, Netherlands |
| APNIC | East, South and Southeast Asia, Oceania | Brisbane, Australia |
| LACNIC | Latin America, parts of the Caribbean | Montevideo, Uruguay |
| AFRINIC | Africa | Ebene, Mauritius |
Worked Example — Looking Up 8.8.8.8
The actual response for Google Public DNS, fetched from ipapi.co and checked field by field before publishing this page.
| Field | Value | What it actually means |
|---|---|---|
| ip / network | 8.8.8.8 / 8.8.8.0/24 | The queried address and the block it belongs to in WHOIS |
| city, region | Mountain View, California | The geolocation database's estimate, not a confirmed device location |
| postal | 94043 | Estimated ZIP tied to that city guess |
| latitude, longitude | 37.42301, -122.083352 | Coordinates for the estimated city center, accurate to roughly this precision only for well-mapped organizational blocks |
| asn / org | AS15169 / Google LLC | The Autonomous System Number and registered operator — this part comes straight from routing/WHOIS data and is reliably accurate |
| timezone | America/Los_Angeles | Derived from the estimated location, not measured |
MaxMind GeoIP2 City-Level Accuracy (United States)
Independent accuracy disclosure from a major geolocation vendor — not the provider this tool queries, but representative of what every consumer-grade IP geolocation database can actually promise.
| Outcome | Share of US IP addresses |
|---|---|
| Located within 50 km of the true position | 60% |
| Located to a city, but more than 50 km off | 33% |
| No city-level data available at all | 7% |
How to Read Your Result
The org/ASN fields are the trustworthy part
Which network operator announced a given block to the internet's routing tables is a hard fact, recorded in WHOIS and visible to every router on the internet. That is why "org: Google LLC, asn: AS15169" for 8.8.8.8 is exact. Use these fields when you need to know who to contact about abuse, or which company runs an address — not the coordinates.
City and coordinates are an estimate, and the estimate degrades in three predictable ways
Large, well-known organizational blocks (major cloud providers, big ISPs' core infrastructure) tend to have accurate city-level data, because the operator's own registered address is a good proxy. Residential and mobile blocks are worse, because carrier-grade NAT means one IP is shared by thousands of subscribers spread across an ISP's whole service region, and the database can only place it at the ISP's nearest hub. VPNs, corporate proxies and cloud-hosted traffic will show the data center's location, which has nothing to do with the person behind it.
A rate-limit response looks like an error, not a data problem
ipapi.co's free tier caps out at 1,000 lookups per day, shared across every visitor using this tool from the same network path, and it can throttle a shared or data-center IP address more aggressively than an individual residential one. If a lookup fails, that is usually the provider protecting its free tier, not something wrong with the IP address you entered.
Limitations & Accuracy Notes
- This tool cannot find a person, a street address, or a precise device location from an IP address, and no IP geolocation service can — that capability does not exist outside of subpoenaing the ISP for its own subscriber records, which this tool has no access to.
- Accuracy is city-level at best and often worse. By the geolocation industry's own published numbers, roughly 4 in 10 US lookups land more than 50 km from the true location, and city/region fields for mobile carriers in particular are frequently just the carrier's regional gateway, not the phone.
- A VPN, proxy, Tor exit node, or corporate NAT gateway will report its own location, not the underlying user's — this is by design, not a bug in the lookup.
- IPv6 addresses and newly reassigned IPv4 blocks are geolocated less reliably than long-established ones, because the commercial databases that back this tool rely partly on historical usage data that takes time to accumulate.
- The data is only as current as the provider's last database refresh. IP blocks are bought, sold, and reassigned between organizations regularly, so an ASN/organization field can lag a real-world ownership change by weeks or months.
- This tool depends entirely on a free third-party API (ipapi.co) with a 1,000-lookup-per-day limit and no uptime guarantee. When that limit is hit or the service is unavailable, the lookup fails outright — there is no offline or local fallback, because IP-to-location mapping requires a maintained external database that cannot reasonably ship to a browser.
Frequently Asked Questions
What information does an IP lookup show?
Is IP geolocation 100% accurate?
Can an IP lookup reveal someone’s exact identity?
Why does my IP show a different location than where I actually am?
References & Further Reading
- ARIN — The IANA IPv4 Free Pool has Depleted — Confirms February 3, 2011 as the date IANA allocated its last IPv4 /8 blocks to the five RIRs
- Wikipedia — Regional Internet Registry — Lists the five RIRs, their regions and headquarters, and how they delegate address blocks to ISPs
- MaxMind — GeoIP2 City Accuracy — Source of the 60% within-50km / 33% beyond-50km / 7% unavailable US city-accuracy figures
- ipapi.co — Pricing — States the free tier limit of 1,000 lookups per day that this tool relies on
- ipapi.co — live lookup for 8.8.8.8 — Actual JSON response used as the worked example in the table above, fetched and checked before publishing