ip_geolocate

IPv4 geolocation for Dart & Flutter, backed by the free geolite2-city-json dataset (derived from MaxMind's GeoLite2-City) served as static JSON from a CDN.

Install

dart pub add ip_geolocate

Usage

import 'package:ip_geolocate/ip_geolocate.dart';

Future<void> main() async {
  final loc = await geolocate('8.8.8.8');
  print(loc?.country);              // US
  print('${loc?.lat}, ${loc?.lon}'); // 37.751, -97.822
}

geolocate returns a GeoLocation? — null means the dataset has no data for the address. The last few lookups are cached in memory, and concurrent lookups of the same address share a single request.

Any field of GeoLocation may be null:

Non-IPv4 input throws a FormatException.

Attribution

Uses GeoLite2 data created by MaxMind, available from https://www.maxmind.com, under the GeoLite2 EULA. Package code is MIT-licensed. Not affiliated with or endorsed by MaxMind.