This is the pure Node API for reading MaxMind DB files. MaxMind DB is a binary file format that stores data indexed by IP address subnets (IPv4 or IPv6).
npm i maxmind-db-reader
// require the db reader
var mmdbreader = require('maxmind-db-reader');
// create new reader from a countries file
var countries = new mmdbreader('./countries.mmdb');
// get geo data and console.log it
console.log(countries.getGeoData('128.101.101.101'));It will console log something like this
{
"city": {
"geoname_id": 5037649,
"names": {
"de": "Minneapolis",
"en": "Minneapolis",
"es": "Mineápolis",
"fr": "Minneapolis",
"ja": "ミネアポリス",
"pt-BR": "Minneapolis",
"ru": "Миннеаполис",
"zh-CN": "明尼阿波利斯"
}
},
"continent": {
"code": "NA",
"geoname_id": 6255149,
"names": {
"de": "Nordamerika",
"en": "North America",
"es": "Norteamérica",
"fr": "Amérique du Nord",
"ja": "北アメリカ",
"pt-BR": "América do Norte",
"ru": "Северная Америка",
"zh-CN": "北美洲"
}
},
"country": {
"geoname_id": 6252001,
"iso_code": "US",
"names": {
"de": "USA",
"en": "United States",
"es": "Estados Unidos",
"fr": "États-Unis",
"ja": "アメリカ合衆国",
"pt-BR": "Estados Unidos",
"ru": "США",
"zh-CN": "美国"
}
},
"location": {
"latitude": 44.9759,
"longitude": -93.2166,
"metro_code": "613",
"time_zone": "America/Chicago"
},
"postal": {
"code": "55414"
},
"registered_country": {
"geoname_id": 6252001,
"iso_code": "US",
"names": {
"de": "USA",
"en": "United States",
"es": "Estados Unidos",
"fr": "États-Unis",
"ja": "アメリカ合衆国",
"pt-BR": "Estados Unidos",
"ru": "США",
"zh-CN": "美国"
}
},
"subdivisions": [
{
"geoname_id": 5037779,
"iso_code": "MN",
"names": {
"en": "Minnesota",
"es": "Minnesota",
"ja": "ミネソタ州",
"ru": "Миннесота"
}
}
]
}Most IP's don't seem to have city data in the GeoLite2 City database. Only american cities are present, if your IP is american but not returning a city try to replace the last number of your IP by a 0 (only with a IPv4 address. for IPv6 address it doesn't seem to work).
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