How can I use an API to detect if an IP address is a VPN in Ruby?

To detect if an IP address is a VPN using IP2Location.io in Ruby, you can use the IP2Location.io API to retrieve geolocation and related data.

  1. We'll assume that you have already installed Ruby and we won't cover that here. You will also need a paid subscription to the Security plan. Subscribe now!
  2. Save the below code into a file called test.rb on your computer.
    Ruby 
    
require 'net/http'
require 'json'

key = 'YOUR_API_KEY'
ip = '8.8.8.8'

uri = URI('https://api.ip2location.io/')
params = { :key => key, :ip => ip }
uri.query = URI.encode_www_form(params)

res = Net::HTTP.get_response(uri)

if !res.body.nil?
	begin
		myobj = JSON.parse(res.body)
		if res.is_a?(Net::HTTPSuccess)
			if myobj.key? 'proxy'
				if myobj['proxy']['is_vpn']
					puts 'The IP ' + ip + ' is a VPN.'
				else
					puts 'The IP ' + ip + ' is NOT a VPN.'
				end
			else
				puts 'ERROR: The is_vpn field requires a paid subscription to the Security plan.'
			end
		else
			if res.body.include? 'error_message'
				puts 'ERROR: ' + myobj['error']['error_message']
			else
				puts 'ERROR: ' + res.body
			end
		end
	rescue JSON::ParserError
		puts 'ERROR: Invalid JSON in response.'
	end
else
	puts 'ERROR: Error calling API.'
end
  3. In the command line, run the below command.
    Bash 
    
ruby test.rb

This script will check if the specified IP address is a VPN. Make sure to replace 8.8.8.8 with the IP address you want and replace YOUR_API_KEY to your own API key.

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