GeoIP (with MaxMind databases)

This is an alternative method to resolve IP addresses to real-world location data using MaxMind GeoLite2 City databases.

Prerequisites

Before you run this, you must first download a database from the MaxMind website - https://dev.maxmind.com/geoip/geoip2/geolite2/. To do this, you may need to register for a free account.

The database you need to download is the one with the edition ID GeoLite2-City. Place it in this folder and run

go run geoip-maxmind

Usage

Make a request to http://127.0.0.1:3000/geo/178.62.56.160, for example. You can omit an IP address to use your current IP address, or replace to use another. If the IP address is invalid, a HTTP 400 is returned.

The response fields can be modified from the ipLookup struct, found in the handlers/handlers.go file.

Example response

{
  "City": {
    "GeoNameID": 2643743,
    "Names": {
      "de": "London",
      "en": "London",
      "es": "Londres",
      "fr": "Londres",
      "ja": "ロンドン",
      "pt-BR": "Londres",
      "ru": "Лондон",
      "zh-CN": "伦敦"
    }
  },
  "Country": {
    "IsoCode": "GB"
  },
  "Location": {
    "AccuracyRadius": 50
  }
}