https://frankl.in/code/geoip2ws-module-for-node-js

geoip2ws_code.js

var geo = require ('geoip2ws') ('userId', 'licenseKey');

// console.log is limited to only 3 levels
function output (err, data) {
  console.dir (err || data, {depth: 10});
}

// Lookup Google
geo ('insights', '173.194.65.100', output);

geoip2ws_output.js

{ country: 
   { iso_code: 'US',
     names: 
      { 'pt-BR': 'Estados Unidos',
        es: 'Estados Unidos',
        ru: 'Сша',
        en: 'United States',
        'zh-CN': '美国',
        fr: 'États-Unis',
        de: 'USA',
        ja: 'アメリカ合衆国' },
     geoname_id: 6252001 },
  location: 
   { longitude: -122.0574,
     latitude: 37.4192,
     time_zone: 'America/Los_Angeles',
     metro_code: 807 },
  subdivisions: 
   [ { iso_code: 'CA',
       names: 
        { 'pt-BR': 'Califórnia',
          es: 'California',
          ru: 'Калифорния',
          en: 'California',
          'zh-CN': '加利福尼亚州',
          fr: 'Californie',
          de: 'Kalifornien',
          ja: 'カリフォルニア州' },
       geoname_id: 5332921 } ],
  postal: { code: '94043' },
  city: 
   { names: 
      { en: 'Mountain View',
        'zh-CN': '芒廷维尤',
        fr: 'Mountain View',
        de: 'Mountain View',
        ja: 'マウンテンビュー',
        ru: 'Маунтин-Вью' },
     geoname_id: 5375480 },
  continent: 
   { names: 
      { 'pt-BR': 'América do Norte',
        es: 'Norteamérica',
        ru: 'Северная Америка',
        en: 'North America',
        'zh-CN': '北美洲',
        fr: 'Amérique du Nord',
        de: 'Nordamerika',
        ja: '北アメリカ' },
     geoname_id: 6255149,
     code: 'NA' },
  maxmind: { queries_remaining: 72081 },
  registered_country: 
   { iso_code: 'US',
     names: 
      { 'pt-BR': 'Estados Unidos',
        es: 'Estados Unidos',
        ru: 'Сша',
        en: 'United States',
        'zh-CN': '美国',
        fr: 'États-Unis',
        de: 'USA',
        ja: 'アメリカ合衆国' },
     geoname_id: 6252001 },
  traits: 
   { domain: '1e100.net',
     autonomous_system_number: 15169,
     ip_address: '74.125.206.100',
     organization: 'Google',
     isp: 'Google',
     autonomous_system_organization: 'Google Inc.' } }