geoip-lite/node-geoip

This project provides a native Node.js implementation of MaxMind's GeoIP API, enabling fast IP address geolocation lookups. It converts MaxMind's CSV data files into a binary format for efficient in-memory lookups, supporting both IPv4 and IPv6 addresses to return country, region, city, and coordinates information. This library is designed for developers building Node.js applications that need to map IP addresses to geographic locations, offering significantly faster performance than traditional C-based implementations while maintaining a simple synchronous API.