geoip2fast ☆
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Description:
GeoIP2 country/ASN lookup tool
Type: Formula  |  Tracked Since: Dec 28, 2025
Links: Homepage  |  formulae.brew.sh
Category: Networking
Tags: geoip networking cli security devops
Install: brew install geoip2fast
About:
Geoip2fast is a high-performance command-line utility for performing fast country and ASN lookups using GeoIP2 databases. It provides a lightweight and efficient alternative to heavier libraries, delivering rapid results for IP geolocation tasks. This tool is ideal for developers and system administrators needing quick, scriptable IP intelligence.
Key Features:
  • High-speed lookups optimized for performance
  • Supports both country and ASN (Autonomous System Number) detection
  • Simple command-line interface for easy scripting and automation
  • Works with standard MaxMind GeoIP2 database files
Use Cases:
  • Automating security log analysis to identify the geographic origin of traffic
  • Enriching user data in applications by appending country and ISP information
  • Network monitoring scripts to flag IPs from unexpected regions or ASNs
Alternatives:
  • mmdblookup – Part of the libmaxminddb library; more verbose output, less focused on speed.
  • geoiplookup – Legacy tool for older GeoIP databases; not compatible with GeoIP2 format.
Version History
Detected Version Rev Change Commit
Oct 10, 2024 6:32pm 0 VERSION_BUMP 51a8558f
Sep 13, 2024 8:33am 0 VERSION_BUMP 7620fb4e
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