Sofia Marquez
Geocoding and IP geolocation for sthan.io
Sofia writes about IP geolocation for developers: finding where a visitor is from their IP address, and what that is used for, such as showing local content, spotting fraud and enforcing regional rules.
Her guide includes code in cURL, JavaScript, Python and C#, and covers the limits too: accuracy, IPv6, VPNs and privacy rules.
- 4 articles
- 34 minutes of reading
- Code in 4 languages
- Latest: Oct 16, 2026
What the guide covers
- Detecting location IP Geolocation API: Complete Developer Guidecountry, region and city from an IP address
- Uses IP Geolocation API: Complete Developer Guidepersonalizing content, preventing fraud, enforcing geo-restrictions
- Code IP Geolocation API: Complete Developer GuidecURL, JavaScript, Python and C# examples
Questions these articles answer
Each question links to the answer inside the article.
About IP geolocation
- What is an IP Geolocation API? IP geolocation guide
- How accurate is IP geolocation? IP geolocation guide
- Does IP geolocation work with IPv6 addresses? IP geolocation guide
- Can IP geolocation detect VPN or proxy usage? IP geolocation guide
Using it
- Is IP geolocation GDPR compliant? IP geolocation guide
- What are the most common use cases for IP geolocation? IP geolocation guide
- How fast are IP geolocation API lookups? IP geolocation guide
Related on sthan.io
Terms explained
All articles by Sofia
Geocoding API Cost: 10 Vendors at 10K, 100K and 1M
Forward geocoding prices read from 10 vendors' own pricing pages on October 16, 2026: free tiers and the monthly bill at 10,000, 100,000 and 1,000,000 requests.
Reverse Geocoding API: What It Returns and Costs
What a reverse geocoding API returns, three live sthan.io results with distances, precision caveats from vendors, and free tiers and prices compared.
Free IP Geolocation APIs: Limits, HTTPS, Commercial Use
Free IP geolocation tiers from 10 providers, read October 16, 2026: requests per day or month, HTTPS, commercial use rules and the fields you get.
IP Geolocation API: Complete Developer Guide
How to detect visitor location, personalize content, prevent fraud, and enforce geo-restrictions with IP geolocation. Includes code examples in cURL, JavaScript, Python, and C#.