Add Anonymous Plus support

.rubocop.yml

@@ -1,4 +1,5 @@
-require: rubocop-performance
+plugins:
+    - rubocop-performance
 
 AllCops:
     TargetRubyVersion: '3.0'
@@ -40,4 +41,4 @@ Style/HashTransformKeys:
     Enabled: true
 
 Gemspec/DevelopmentDependencies:
-  Enabled: false
+    Enabled: false

CHANGELOG.md

@@ -2,6 +2,9 @@
 
 ## 1.3.0
 
+* Support for the GeoIP Anonymous Plus database has been added. To do a
+  lookup in this database, use the `anonymous_plus` method on
+  `MaxMind::GeoIP2::Reader`.
 * Ruby 3.0+ is now required. If you're using Ruby 2.5, 2.6, or 2.7, please
   use version 1.2.0 of this gem.
 * Deprecated `metro_code` on `MaxMind::GeoIP2::Record::Location`. The code

README.md

@@ -133,6 +133,21 @@ record = reader.anonymous_ip('128.101.101.101')
 puts "Anonymous" if record.is_anonymous
 ```
 
+### Anonymous Plus Example
+
+```ruby
+require 'maxmind/geoip2'
+
+# This creates the Reader object which should be reused across lookups.
+reader = MaxMind::GeoIP2::Reader.new(
+  database: '/usr/share/GeoIP/GeoIP-Anonymous-Plus.mmdb',
+)
+
+record = reader.anonymous_plus('128.101.101.101')
+
+puts record.anonymizer_confidence # 30
+```
+
 ### ASN Example
 
 ```ruby

lib/maxmind/geoip2/model/anonymous_plus.rb

@@ -0,0 +1,46 @@
+# frozen_string_literal: true
+
+require 'date'
+require 'maxmind/geoip2/model/anonymous_ip'
+
+module MaxMind
+  module GeoIP2
+    module Model
+      # Model class for the Anonymous Plus database.
+      class AnonymousPlus < AnonymousIP
+        # A score ranging from 1 to 99 that is our percent confidence that the
+        # network is currently part of an actively used VPN service.
+        #
+        # @return [Integer, nil]
+        def anonymizer_confidence
+          get('anonymizer_confidence')
+        end
+
+        # The last day that the network was sighted in our analysis of
+        # anonymized networks. This value is parsed lazily.
+        #
+        # @return [Date, nil] A Date object representing the last seen date,
+        #   or nil if the date is not available.
+        def network_last_seen
+          return @network_last_seen if defined?(@network_last_seen)
+
+          date_string = get('network_last_seen')
+
+          if !date_string
+            return nil
+          end
+
+          @network_last_seen = Date.parse(date_string)
+        end
+
+        # The name of the VPN provider (e.g., NordVPN, SurfShark, etc.)
+        # associated with the network.
+        #
+        # @return [String, nil]
+        def provider_name
+          get('provider_name')
+        end
+      end
+    end
+  end
+end

lib/maxmind/geoip2/reader.rb

@@ -3,6 +3,7 @@
 require 'maxmind/db'
 require 'maxmind/geoip2/errors'
 require 'maxmind/geoip2/model/anonymous_ip'
+require 'maxmind/geoip2/model/anonymous_plus'
 require 'maxmind/geoip2/model/asn'
 require 'maxmind/geoip2/model/city'
 require 'maxmind/geoip2/model/connection_type'
@@ -86,7 +87,7 @@ def initialize(*args)
       # rubocop:enable Metrics/CyclomaticComplexity
       # rubocop:enable Metrics/PerceivedComplexity
 
-      # Look up the IP address in the database.
+      # Look up the IP address in the Anonymous IP database.
       #
       # @param ip_address [String] a string in the standard notation. It may be
       #   IPv4 or IPv6.
@@ -110,6 +111,30 @@ def anonymous_ip(ip_address)
         )
       end
 
+      # Look up the IP address in the Anonymous Plus database.
+      #
+      # @param ip_address [String] a string in the standard notation. It may be
+      #   IPv4 or IPv6.
+      #
+      # @return [MaxMind::GeoIP2::Model::AnonymousPlus]
+      #
+      # @raise [ArgumentError] if used against a non-Anonymous Plus database
+      #   or if you attempt to look up an IPv6 address in an IPv4 only database.
+      #
+      # @raise [AddressNotFoundError] if the IP address is not found in the
+      #   database.
+      #
+      # @raise [MaxMind::DB::InvalidDatabaseError] if the database appears
+      #   corrupt.
+      def anonymous_plus(ip_address)
+        flat_model_for(
+          Model::AnonymousPlus,
+          'anonymous_plus',
+          'GeoIP-Anonymous-Plus',
+          ip_address,
+        )
+      end
+
       # Look up the IP address in an ASN database.
       #
       # @param ip_address [String] a string in the standard notation. It may be

test/test_reader.rb

@@ -37,6 +37,29 @@ def test_anonymous_ip_residential_proxy
     reader.close
   end
 
+  def test_anonymous_plus
+    reader = MaxMind::GeoIP2::Reader.new(
+      'test/data/test-data/GeoIP-Anonymous-Plus-Test.mmdb',
+    )
+    ip = '1.2.0.1'
+    record = reader.anonymous_plus(ip)
+
+    assert_equal(30, record.anonymizer_confidence)
+    assert_equal(true, record.anonymous?)
+    assert_equal(true, record.anonymous_vpn?)
+    assert_equal(false, record.hosting_provider?)
+    assert_equal(Date.new(2025, 4, 14), record.network_last_seen)
+    assert_equal('foo', record.provider_name)
+    assert_equal(false, record.public_proxy?)
+    assert_equal(false, record.residential_proxy?)
+    assert_equal(false, record.tor_exit_node?)
+
+    assert_equal(ip, record.ip_address)
+    assert_equal('1.2.0.1/32', record.network)
+
+    reader.close
+  end
+
   def test_asn
     reader = MaxMind::GeoIP2::Reader.new(
       'test/data/test-data/GeoLite2-ASN-Test.mmdb',