node-maxmind

IP geo lookup using Maxmind databases, written in pure javascript with no dependencies.

GEO databases

Free GEO databases available for download here: http://dev.maxmind.com/geoip/geolite.

Installation

npm install maxmind

Main features

• Location lookup
• Region Loopup
• Country lookup
• Distance between two IP addresses (locations)
• Timezone lookup by IP
• Autonomous System Numbers (ASN) lookup

Usage

** see code samples in ./examples directory **

var maxmind = require('maxmind');

// City/Location lookup
maxmind.init('/path/to/GeoLiteCity.dat');
var location = maxmind.getLocation('66.6.44.4');

// Country Lookup
maxmind.init('/path/to/GeoIP.dat');
var country = maxmind.getCountry('66.6.44.4');

// Autonomous System Numbers (ASN) lookup
maxmind.init('/path/to/GeoIPASNum.dat');
var org = maxmind.getOrganization('66.6.44.4');

You can initialize module with several databases at once, and proper db will be automatically selected for particular query. If any options given they apply for all databases you initialize.

var maxmind = require('maxmind');
maxmind.init(['/path/to/GeoLiteCity.dat', '/path/to/GeoIPASNum.dat']);
// now both org and location lookups will work
var org = maxmind.getOrganization('66.6.44.4');
var location = maxmind.getLocation('66.6.44.4');

Options

By default module does not use cache, and works directly with file system. Enabling cache leads to better performance though consumes more memory.

• indexCache saves in memory the country index only
• memoryCache saves in memory full database file
• checkForUpdates checks databases for updates (via fs mtime)

If you decided to enable some options you can pass it as a flag in init method:

var maxmind = require('maxmind');
maxmind.init('/path/to/GeoIP.dat', { indexCache: true });

Caching could significantly increase performance, refer to this camparison which was made on average laptop:

• default: 18,000 lookups / second
• indexCache: 80,000 lookups / second
• memoryCache: 130,000 lookups / second

Tests

If you want to run tests you will need mocha installed, then just run it:

$ npm test

Disclaimer

Module is quite young and serious bugs are possible. Feel free to send pull request / bug reports.