GeoIP2

GeoIP2-CN is an open-source geographic IP address database optimized for identifying connections associated with mainland China. It provides a compact alternative to global GeoIP databases commonly used by proxy management applications. The project combines Chinese IP address information from IPIP.net and the Chunzhen database. Its build process merges overlapping records, removes duplicates, and generates a streamlined GeoIP2 database. The resulting file is approximately 100 KB, reducing download sizes and lookup overhead. Users can integrate it with Surge, Quantumult X, Shadowrocket, Clash, and related networking tools. An additional CIDR list supports firewall configurations and older proxy clients. Automated workflows refresh the database every three days and distribute updated files through GitHub and CDN links.

Features

Mainland China IP Address Identification
Compact GeoIP2 MMDB Database
Multiple Chinese IP Data Sources
Automated Three-Day Database Updates
IP-CIDR List Generation
Proxy and Firewall Configuration Compatibility

Project Samples

Project Activity

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License

GNU General Public License version 3.0 (GPLv3)

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Additional Project Details

Operating Systems

Android, Apple iPhone, Mac, Windows

Programming Language

Related Categories

Go Libraries

Registered

2026-10-21

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