IPinfo Perl Client Library

January 23, 2026 · View on GitHub

This is the official Perl client library for the IPinfo.io IP address API, allowing you to look up 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 signing up for a free account at https://ipinfo.io/signup.

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 https://ipinfo.io/pricing

The library also supports the Lite API, see the Lite API section for more info.

Installation

Using cpanm install the Geo::IPinfo module:

$ cpanm Geo::IPinfo

Add this line to your 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
make test
make install

Quick Start

use Geo::IPinfo;

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

$ip_address = '216.239.36.21';
$details = $ipinfo->info($ip_address);
$city = $details->city; # Emeryville
$loc = $details->loc; # 37.8342,-122.2900

Dependencies

Cache::LRU
JSON
LWP::UserAgent
HTTP::Headers
Net::CIDR
Net::CIDR::Set

Usage

The Geo::IPinfo->info() method accepts an IPv4 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. The Geo::IPinfo->info_v6() method works in a similar fashion but for IPv6 addresses.

use Geo::IPinfo;

$access_token = '123456789abc';
$ipinfo = Geo::IPinfo->new($access_token);
$details = $ipinfo->info($ip_address);
# for IPv6
# $details = $ipinfo->info_v6($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.

Authentication

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() and Geo::IPinfo->info_v6() 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; # cpe-104-175-221-247.socal.res.rr.com

Country Name

Details->country_name will return the country name. See below for instructions on changing these country names for use with non-English languages. Details->country will still return the country code.

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

IP Address

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

$ip = $details->ip; # 104.175.221.247
$ip_addr = $details->ip_address; # <IPAddr: IPv4:104.175.221.247/255.255.255.255>

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": "104.175.221.247",
  "hostname": "cpe-104-175-221-247.socal.res.rr.com",
  "city": "Los Angeles",
  "region": "California",
  "country": "US",
  "loc": "34.0290,-118.4000",
  "postal": "90034",
  "asn": {
    "asn": "AS20001",
    "name": "Time Warner Cable Internet LLC",
    "domain": "twcable.com",
    "route": "104.172.0.0/14",
    "type": "isp"
  },
  "company": {
    "name": "Time Warner Cable Internet LLC",
    "domain": "twcable.com",
    "type": "isp"
  }
}

Lite API

The library gives the possibility to use the Lite API too, authentication with your token is still required.

The returned details are slightly different from the Core API.

use Geo::IPinfoLite;

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

$ip_address = '216.239.36.21';
$details = $ipinfo->info($ip_address);
$country_code = $details->country_code; # US
$country = $details->country; # United States

Core API

The library also supports the Core API, which provides city-level geolocation with nested geo and AS objects. Authentication with your token is required.

use Geo::IPinfoCore;

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

$details = $ipinfo->info('8.8.8.8');
$ip = $details->ip; # 8.8.8.8
$city = $details->geo->{city}; # Mountain View
$country = $details->geo->{country}; # United States
$asn = $details->as->{asn}; # AS15169
$as_name = $details->as->{name}; # Google LLC

Plus API

The library also supports the Plus API, which provides enhanced data including mobile carrier info and privacy detection. Authentication with your token is required.

use Geo::IPinfoPlus;

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

$details = $ipinfo->info('8.8.8.8');
$ip = $details->ip; # 8.8.8.8
$city = $details->geo->{city}; # Mountain View
$mobile = $details->mobile; # mobile carrier info
$is_proxy = $details->anonymous->{is_proxy}; # false

Residential Proxy API

The library also supports the Residential Proxy API, which allows you to check if an IP address is a residential proxy. Authentication with your token is required.

use Geo::IPinfo;

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

$resproxy = $ipinfo->get_resproxy('175.107.211.204');
$ip = $resproxy->{ip}; # 175.107.211.204
$last_seen = $resproxy->{last_seen}; # 2025-01-20
$percent_days_seen = $resproxy->{percent_days_seen}; # 0.85
$service = $resproxy->{service}; # Bright Data

Caching

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));

Internationalization

When looking up an IP address, the $details object includes a $details->country_name method which includes the country name based on American English, $details->is_eu method which returns true if the country is a member of the European Union (EU) else undef, $details->country_flag method which returns a dictionary of emoji and Unicode of the country's flag, $details->country_flag_url will return a public link to the country's flag image as an SVG which can be used anywhere and $details->country_currency method which returns a dictionary of code, the symbol of a country's currency and $details->continent which includes code and name of the continent. It is possible to return the country name in other languages, change the EU countries, countries flags, countries' currencies, and continents by setting the countries, eu_countries, countries_flags, countries_currencies and continents settings when creating the IPinfo object. The countries, countries_flags, countries_currencies, and continents are hashes while eu_countries is an array.

my %custom_countries = (
    "US" => "Custom United States",
    "DE" => "Custom Germany"
);
my @custom_eu_countries = ( "FR", "DE" );
my %custom_countries_flags = (
    'AD' => { 'emoji' => '🇦🇩', 'unicode' => 'U+1F1E6 U+1F1E9' },
    'AE' => { 'emoji' => '🇦🇪', 'unicode' => 'U+1F1E6 U+1F1EA' }
);
my %custom_countries_currencies = (
    'AD' => { 'code' => 'EUR', 'symbol' => '€' },
    'AE' => { 'code' => 'AED', 'symbol' => 'د.إ' }
);
my %custom_continents = (
    "BE" => { "code" => "EU", "name" => "Europe" },
    "BF" => { "code" => "AF", "name" => "Africa" }
);

$ipinfo = Geo::IPinfo->new($token, countries => \%custom_countries);
$ipinfo = Geo::IPinfo->new($token, eu_countries => \@custom_eu_countries);
$ipinfo = Geo::IPinfo->new($token, countries_flags => \%custom_countries_flags);
$ipinfo = Geo::IPinfo->new($token, countries_currencies => \%custom_countries_currencies);
$ipinfo = Geo::IPinfo->new($token, continents => \%custom_continents);

Additional Information

Additional package information can be found at the following locations:

RT, CPAN's request tracker (report bugs here)
    http://rt.cpan.org/NoAuth/Bugs.html?Dist=Geo-IPinfo

AnnoCPAN, Annotated CPAN documentation
    http://annocpan.org/dist/Geo-IPinfo

CPAN Ratings
    http://cpanratings.perl.org/d/Geo-IPinfo

Search CPAN
    http://search.cpan.org/dist/Geo-IPinfo/

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.

SUPPORT AND DOCUMENTATION

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

perldoc Geo::IPinfo