When you look up an IP address on WheresThatIP.com or any other geolocation service, the accuracy of the results depends heavily on where in the world that IP is located. Country-level identification is usually very reliable, but city-level accuracy varies dramatically between regions. This guide explains why and provides data on what to expect from different parts of the world.
Understanding Geolocation Accuracy Levels
IP geolocation operates at several levels of precision, each with different accuracy rates:
| Level | Global Average Accuracy | What It Means |
|---|---|---|
| Country | 95-99% | Which country the IP is in |
| Region/State | 70-85% | Which state, province, or region |
| City | 50-75% | Which city or metropolitan area |
| Postal Code | 20-50% | Which ZIP or postal code area |
| Latitude/Longitude | Varies widely | Approximate coordinates (typically 10-50km radius) |
These are rough global averages. Actual accuracy for a specific country or ISP can be significantly better or worse.
Accuracy by Region
United States
The US has some of the best IP geolocation coverage globally, thanks to well-documented ISP registrations and extensive mapping efforts:
- Country accuracy: 99%+
- State accuracy: 85-90%
- City accuracy: 70-80%
Major metro areas (New York, San Francisco, Chicago) have the best city-level accuracy. Rural areas are less precise, often mapping to the nearest large city or ISP hub. Mobile IPs are generally less accurate than residential broadband.
Western Europe
Countries like the UK, Germany, France, and the Netherlands have excellent geolocation coverage:
- Country accuracy: 99%+
- City accuracy: 70-85%
The UK and Germany tend to have the highest city-level accuracy in Europe. Smaller countries benefit from their geographic size — even if the city is wrong, it is likely a nearby city.
Eastern Europe
Coverage varies significantly across Eastern European countries:
- Country accuracy: 95-99%
- City accuracy: 50-70%
Poland, Czech Republic, and Romania have relatively good coverage. Some smaller nations have less detailed mapping.
East Asia
- Japan: Excellent accuracy (80%+ city-level). Well-structured ISP networks.
- South Korea: Very good accuracy (75%+ city-level). Compact geography helps.
- China: Moderate accuracy (60-70% city-level). Large ISPs with centralized IP allocation can place users in provincial capitals rather than actual cities.
South/Southeast Asia
- India: Moderate accuracy (50-65% city-level). Mobile-first internet usage and CGNAT make city-level precision challenging.
- Singapore: Very high accuracy (90%+) — the entire country is essentially one city.
- Indonesia, Philippines: Lower accuracy (40-55% city-level). Island geography and distributed ISP infrastructure create challenges.
Middle East
- UAE, Israel: Good accuracy (70-80% city-level). Small countries with modern infrastructure.
- Saudi Arabia, Iran: Moderate accuracy (50-65% city-level). Large geographic areas with centralized internet gateways.
Africa
Africa generally has the lowest IP geolocation accuracy globally:
- Country accuracy: 85-95%
- City accuracy: 30-50%
South Africa and Nigeria have the best coverage on the continent. Many African IPs map only to the country level, with city-level data defaulting to the capital or a major hub. The rapid growth of mobile internet and limited fixed infrastructure contribute to lower accuracy.
South America
- Brazil: Moderate accuracy (55-70% city-level). Good coverage in major cities, less precise in rural areas.
- Argentina, Chile: Moderate accuracy (55-65% city-level).
- Smaller nations: Country-level is usually correct, but city-level data often defaults to the capital.
Oceania
- Australia: Good accuracy (70-80% city-level). Well-mapped ISP networks, but vast distances mean some IPs map to state capitals rather than actual locations.
- New Zealand: Good accuracy (70-80% city-level).
Why Accuracy Varies
Several factors determine how accurately an IP can be geolocated:
1. ISP Registration Practices
When ISPs register IP address blocks, they specify a location. Some ISPs register at city level, others at country level. The more granular the registration, the better the geolocation. US and European ISPs tend to register more precisely than those in developing regions.
2. Network Architecture
ISPs with many distributed points of presence (PoPs) are easier to geolocate because IP blocks can be tied to specific PoP locations. ISPs that route all traffic through one or two national hubs make city-level geolocation difficult.
3. Mobile vs. Fixed-Line
Mobile IPs are generally harder to geolocate because mobile carriers use centralized gateways and CGNAT. A mobile user in one city might have an IP address that geolocates to the carrier's gateway hundreds of kilometers away.
4. VPN and Proxy Usage
High rates of VPN usage in a country can skew geolocation data. The IP geolocates to the VPN server, not the user. Countries with heavy censorship tend to have higher VPN adoption.
5. IPv6 Adoption Rate
IPv6 addresses are generally less accurately geolocated than IPv4, because geolocation databases have had decades to map IPv4 but only years for IPv6. Countries with high IPv6 adoption may see lower initial accuracy.
6. Database Investment
Geolocation providers invest more resources in mapping countries with higher commercial value. The US, Europe, and Japan receive more attention than smaller markets, leading to better accuracy in those regions.
How Different Databases Compare
| Database | Strengths | Typical Use |
|---|---|---|
| MaxMind GeoIP2 | Best overall accuracy, frequent updates | Web analytics, content delivery, fraud detection |
| IP2Location | Good global coverage, competitive pricing | Ad targeting, security applications |
| DB-IP | Free tier available, decent accuracy | Small businesses, personal projects |
| IPinfo | Excellent API, ASN data | Developer tools, network analysis |
Different databases can disagree on the same IP address. If accuracy matters, consider cross-referencing multiple sources. Our IP Lookup tool provides comprehensive geolocation data you can verify against other sources.
Improving Accuracy for Your Use Case
If you rely on IP geolocation for business purposes:
- Use multiple databases — Cross-reference results for higher confidence
- Supplement with other signals — GPS, Wi-Fi positioning, and user-provided location data can fill gaps
- Account for confidence levels — Many databases provide a confidence score. Use it
- Update frequently — IP assignments change. Use updated databases (monthly or more often)
- Handle gracefully — Always have a fallback for when geolocation is unavailable or uncertain
- Use our API — The WheresThatIP API provides geolocation data that is regularly updated and easy to integrate
Frequently Asked Questions
Why does my IP address show the wrong city?
The most common reason is that your ISP registered your IP block to a different location than where you actually are. For detailed causes and fixes, see our guide on why your IP shows the wrong location.
Is IP geolocation accurate enough for fraud detection?
At the country level, yes. City-level geolocation adds value but should not be the sole factor. Combine it with other signals (device fingerprint, behavioral analysis, transaction patterns) for reliable fraud detection.
Can IP geolocation tell me someone's exact address?
No. IP geolocation cannot determine a street address. At best, it narrows the location to a city or metropolitan area. Only ISPs and law enforcement (with legal process) can link an IP to a physical address. See our guide on how police track IP addresses.
Why are mobile IPs less accurate?
Mobile carriers route traffic through regional gateways and use CGNAT extensively. A mobile user in Austin might have an IP that geolocates to Dallas because that is where the carrier's gateway is. The physical distance between the user and the IP's geolocated position can be large.