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IPinfo IPinfo Perl Client Library

This is the official Perl client library for the IP address API, allowing you to lookup your own IP address, or get any of the following details for an IP:

  • IP to Geolocation (city, region, country, postal code, latitude and longitude)
  • IP to ASN (ISP or network operator, associated domain name, and type, such as business, hosting or company)
  • IP to Company (the name and domain of the business that uses the IP address)
  • IP to Carrier (the name of the mobile carrier and MNC and MCC for that carrier if the IP is used exclusively for mobile traffic)

Check all the data we have for your IP address here.

Getting Started

You'll need an IPinfo API access token, which you can get by singing up for a free account at

The free plan is limited to 50,000 requests per month, and doesn't include some of the data fields such as IP type and company data. To enable all the data fields and additional request volumes see


Using cpanm install the Geo::IPinfo module:

$ cpanm Geo::IPinfo

Add this line to your application application code:

use Geo::IPinfo;

If you'd like to install from source (not necessary for use in your application), download the source and run the following commands:

perl Makefile.PL
make test
make install

Quick Start

use Geo::IPinfo;

$access_token = '123456789abc';
$ipinfo = Geo::IPinfo->new($access_token);

$ip_address = '';
$details = $ipinfo->info($ip_address);
$city = $details->city; # Emeryville
$loc = $details->loc; # 37.8342,-122.2900


  • Cache::LRU
  • File::Share
  • File::ShareDir::Install
  • JSON
  • LWP::UserAgent


The Geo::IPinfo->info() method accepts an IP address as an optional, positional argument. If no IP address is specified, the API will return data for the IP address from which it receives the request.

use Geo::IPinfo;

$access_token = '123456789abc';
$ipinfo = Geo::IPinfo->new($access_token);
$details = $ipinfo->info($ip_address);

if (defined $details)   # valid data returned
  $city = $details->city; # Emeryville
  $loc = $details->loc; # 37.8342,-122.2900
else   # invalid data obtained, show error message
  print $ipinfo->error_msg . "\n";

If the Details object is empty the error message can be accessed via Geo::IPinfo->error_msg.


The IPinfo library can be authenticated with your IPinfo API token, which is passed in as a positional argument. It also works without an authentication token, but in a more limited capacity.

$access_token = '123456789abc';
$ipinfo = Geo::IPinfo->new($access_token);

Details Data

Geo::IPinfo->info() will return a Details object that contains all fields listed in the IPinfo developer docs with a few minor additions. Properties can be accessed through methods of the same name.

$hostname = $details->hostname; #
Country Name

Details->country_name will return the country name, as supplied by the countries.json file. See below for instructions on changing that file for use with non-English languages. Details->country will still return country code.

$country = $details->country; # US
$country_name = $details->country_name; # United States

IP Address

Details->ip_address will return the an IPAddr object from the Perl Standard Library. Details->ip will still return a string.

$ip = $details->ip; #
$ip_addr = $details->ip_address; # <IPAddr: IPv4:>
Longitude and Latitude

Details->latitude and Details->longitude will return latitude and longitude, respectively, as strings. Details->loc will still return a composite string of both values.

$loc = $details->loc; # 34.0293,-118.3570
$lat = $details->latitude; # 34.0293
$lon = $details->longitude; # -118.3570
Accessing all properties

Details->all will return all details data as a dictionary.

$details->all = {
  "ip": "",
  "hostname": "",
  "city": "Los Angeles",
  "region": "California",
  "country": "US",
  "loc": "34.0290,-118.4000",
  "postal": "90034",
  "asn": {
    "asn": "AS20001",
    "name": "Time Warner Cable Internet LLC",
    "domain": "",
    "route": "",
    "type": "isp"
  "company": {
    "name": "Time Warner Cable Internet LLC",
    "domain": "",
    "type": "isp"


In-memory caching of Details data is provided by default via the Cache::LRU package. This uses an LRU (least recently used) cache with a TTL (time to live) by default. This means that values will be cached for the specified duration; if the cache's max size is reached, cache values will be invalidated as necessary, starting with the oldest cached value.

Modifying cache options

Cache behavior can be modified with the %options argument.

  • Default maximum cache size: 4096 (multiples of 2 are recommended to increase efficiency)
  • Default TTL: 24 hours (in seconds)
$token = '1234';
$ipinfo = Geo::IPinfo->new($token, ("cache_ttl" => 100, "cache_max_size" => 1000));
Using a different cache

It's possible to use a custom cache by passing this into the handler object with the cache option. A custom cache must include the following methods:

  • $custom_cache->get($key);
  • $custom_cache->set($key, $value);

If a custom cache is used then the cache_ttl and cache_max_size options will not be used.

$ipinfo = Geo::IPinfo->new($token, ("cache" => $my_custom_cache));

Request options

The request timeout period can be set in the %options parameter.

  • Default request timeout: 2 seconds
$ipinfo = Geo::IPinfo->new($token, ("timeout" => 5));


When looking up an IP address, the $details object includes a $details->country_name method which includes the country name based on American English. It is possible to return the country name in other languages by setting the countries setting when creating the IPinfo object.

The file must be a .json file with the following structure:

 "BD": "Bangladesh",
 "BE": "Belgium",
 "BF": "Burkina Faso",
 "BG": "Bulgaria"
$ipinfo = Geo::IPinfo->new($token, ("countries" => $path_to_countries_file));

Additional Information

Additional package information can be found at the following locations:

RT, CPAN's request tracker (report bugs here)

AnnoCPAN, Annotated CPAN documentation

CPAN Ratings

Search CPAN

Other Libraries

There are official IPinfo client libraries available for many languages including PHP, Go, Java, Ruby, and many popular frameworks such as Django, Rails and Laravel. There are also many third party libraries and integrations available for our API.

About IPinfo

Founded in 2013, IPinfo prides itself on being the most reliable, accurate, and in-depth source of IP address data available anywhere. We process terabytes of data to produce our custom IP geolocation, company, carrier, privacy detection, Reverse IP, hosted domains, and IP type data sets. Our API handles over 40 billion requests a month for 100,000 businesses and developers.



After installing, you can find documentation for this module with the perldoc command.

perldoc Geo::IPinfo


Official Perl client library for IPinfo API (IP geolocation and other types of IP data)




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