Add anonymizer property to IpAddress model

CHANGELOG.md

@@ -1,9 +1,12 @@
 CHANGELOG
 =========
 
-4.1.0
+4.1.0 (2026-01-20)
 ------------------
 
+* Added `anonymizer` property to `IpAddress` response model. This contains
+  information about whether the IP address is an anonymous network, including
+  confidence score, VPN provider name, and various anonymizer flags.
 * Added `BANQUEST`, `SUMMIT_PAYMENTS`, and `YAADPAY` to the
   `Payment.Processor` enum.
 

README.md

@@ -16,7 +16,7 @@ To do this, add the dependency to your pom.xml:
     <dependency>
         <groupId>com.maxmind.minfraud</groupId>
         <artifactId>minfraud</artifactId>
-        <version>4.0.0</version>
+        <version>4.1.0</version>
     </dependency>
 ```
 
@@ -29,7 +29,7 @@ repositories {
     mavenCentral()
 }
 dependencies {
-    implementation 'com.maxmind.minfraud:minfraud:4.0.0'
+    implementation 'com.maxmind.minfraud:minfraud:4.1.0'
 }
 ```
 
@@ -300,6 +300,6 @@ This API uses [Semantic Versioning](https://semver.org/).
 
 ## Copyright and License ##
 
-This software is Copyright (c) 2015-2025 by MaxMind, Inc.
+This software is Copyright (c) 2015-2026 by MaxMind, Inc.
 
 This is free software, licensed under the Apache License, Version 2.0.

pom.xml

@@ -4,7 +4,7 @@
 
     <groupId>com.maxmind.minfraud</groupId>
     <artifactId>minfraud</artifactId>
-    <version>4.0.0</version>
+    <version>4.1.0</version>
     <name>MaxMind minFraud API</name>
     <description>MaxMind minFraud Score, Insights, Factors and Report Transaction API</description>
     <url>http://dev.maxmind.com/minfraud</url>
@@ -53,22 +53,22 @@
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-core</artifactId>
-            <version>2.20.1</version>
+            <version>2.21.0</version>
         </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-databind</artifactId>
-            <version>2.20.1</version>
+            <version>2.21.0</version>
         </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-annotations</artifactId>
-            <version>2.20</version>
+            <version>2.21</version>
         </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.datatype</groupId>
             <artifactId>jackson-datatype-jsr310</artifactId>
-            <version>2.20.1</version>
+            <version>2.21.0</version>
         </dependency>
         <dependency>
             <groupId>com.maxmind.geoip2</groupId>
@@ -96,7 +96,7 @@
         <dependency>
             <groupId>com.fasterxml.jackson.jr</groupId>
             <artifactId>jackson-jr-objects</artifactId>
-            <version>2.20.1</version>
+            <version>2.21.0</version>
             <scope>test</scope>
         </dependency>
         <dependency>
@@ -252,7 +252,7 @@
             <plugin>
                 <groupId>org.codehaus.mojo</groupId>
                 <artifactId>versions-maven-plugin</artifactId>
-                <version>2.20.1</version>
+                <version>2.21.0</version>
             </plugin>
             <plugin>
                 <groupId>org.sonatype.central</groupId>
@@ -270,7 +270,7 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <!-- Baseline version for API compatibility checking. Update after each release. -->
-        <japicmp.baselineVersion>4.0.0</japicmp.baselineVersion>
+        <japicmp.baselineVersion>4.1.0</japicmp.baselineVersion>
     </properties>
 
     <distributionManagement>

src/main/java/com/maxmind/minfraud/response/IpAddress.java

@@ -1,6 +1,7 @@
 package com.maxmind.minfraud.response;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
+import com.maxmind.geoip2.record.Anonymizer;
 import com.maxmind.geoip2.record.City;
 import com.maxmind.geoip2.record.Continent;
 import com.maxmind.geoip2.record.Country;
@@ -14,6 +15,8 @@
 /**
  * This class contains minFraud response data related to the IP location.
  *
+ * @param anonymizer         Anonymizer record for the requested IP address. This contains
+ *                           information about whether the IP address is an anonymous network.
  * @param city               City record for the requested IP address.
  * @param continent          Continent record for the requested IP address.
  * @param country            Country record for the requested IP address.
@@ -29,6 +32,8 @@
  * @param traits             Traits record for the requested IP address.
  */
 public record IpAddress(
+    @JsonProperty("anonymizer")
+    Anonymizer anonymizer,
     @JsonProperty("city")
     City city,
 
@@ -67,6 +72,7 @@ public record IpAddress(
      * Compact canonical constructor that sets defaults for null values.
      */
     public IpAddress {
+        anonymizer = anonymizer != null ? anonymizer : new Anonymizer();
         location = location != null ? location : new GeoIp2Location();
         riskReasons = riskReasons != null ? List.copyOf(riskReasons) : List.of();
         subdivisions = subdivisions != null ? List.copyOf(subdivisions) : List.of();
@@ -77,7 +83,42 @@ public record IpAddress(
      */
     public IpAddress() {
         this(null, null, null, null, null, null,
-            null, null, null, null, null);
+            null, null, null, null, null, null);
+    }
+
+    /**
+     * Constructs an instance of {@code IpAddress}.
+     *
+     * @param city               City record for the requested IP address.
+     * @param continent          Continent record for the requested IP address.
+     * @param country            Country record for the requested IP address.
+     * @param location           Location record for the requested IP address.
+     * @param postal             Postal record for the requested IP address.
+     * @param registeredCountry  Registered country record for the requested IP address.
+     * @param representedCountry Represented country record for the requested IP address.
+     * @param risk               The risk associated with the IP address.
+     * @param riskReasons        List of risk reason objects.
+     * @param subdivisions       List of subdivision records for the requested IP address.
+     * @param traits             Traits record for the requested IP address.
+     * @deprecated Use the canonical constructor instead. This constructor will be removed in 5.0.0.
+     */
+    @Deprecated(since = "4.1.0", forRemoval = true)
+    public IpAddress(
+        City city,
+        Continent continent,
+        Country country,
+        GeoIp2Location location,
+        Postal postal,
+        Country registeredCountry,
+        RepresentedCountry representedCountry,
+        Double risk,
+        List<IpRiskReason> riskReasons,
+        List<Subdivision> subdivisions,
+        Traits traits
+    ) {
+        this(null, city, continent, country, location, postal,
+            registeredCountry, representedCountry, risk, riskReasons,
+            subdivisions, traits);
     }
 
     /**

src/test/java/com/maxmind/minfraud/response/InsightsResponseTest.java

@@ -2,6 +2,7 @@
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
 import com.fasterxml.jackson.jr.ob.JSON;
@@ -28,6 +29,17 @@ public void testInsights() throws Exception {
                 .end()
                 .end()
                 .startObjectField("ip_address")
+                .startObjectField("anonymizer")
+                .put("confidence", 99)
+                .put("is_anonymous", true)
+                .put("is_anonymous_vpn", true)
+                .put("is_hosting_provider", true)
+                .put("is_public_proxy", true)
+                .put("is_residential_proxy", true)
+                .put("is_tor_exit_node", true)
+                .put("network_last_seen", "2025-01-15")
+                .put("provider_name", "TestVPN")
+                .end()
                 .startObjectField("country")
                 .put("iso_code", "US")
                 .end()
@@ -120,5 +132,25 @@ public void testInsights() throws Exception {
         );
         assertEquals("152.216.7.110", insights.ipAddress().traits().ipAddress().getHostAddress());
         assertEquals("81.2.69.0/24", insights.ipAddress().traits().network().toString());
+
+        // Test anonymizer
+        assertNotNull(insights.ipAddress().anonymizer(), "anonymizer should not be null");
+        assertEquals(
+            Integer.valueOf(99),
+            insights.ipAddress().anonymizer().confidence(),
+            "correct anonymizer confidence"
+        );
+        assertTrue(insights.ipAddress().anonymizer().isAnonymous(), "correct isAnonymous");
+        assertTrue(insights.ipAddress().anonymizer().isAnonymousVpn(), "correct isAnonymousVpn");
+        assertTrue(insights.ipAddress().anonymizer().isHostingProvider(), "correct isHostingProvider");
+        assertTrue(insights.ipAddress().anonymizer().isPublicProxy(), "correct isPublicProxy");
+        assertTrue(insights.ipAddress().anonymizer().isResidentialProxy(), "correct isResidentialProxy");
+        assertTrue(insights.ipAddress().anonymizer().isTorExitNode(), "correct isTorExitNode");
+        assertEquals(
+            LocalDate.parse("2025-01-15"),
+            insights.ipAddress().anonymizer().networkLastSeen(),
+            "correct networkLastSeen"
+        );
+        assertEquals("TestVPN", insights.ipAddress().anonymizer().providerName(), "correct providerName");
     }
 }

src/test/resources/test-data/factors-response.json

@@ -15,6 +15,17 @@
         "reason": "Suspicious activity has been seen on this IP address across minFraud customers."
       }
     ],
+    "anonymizer": {
+      "confidence": 99,
+      "is_anonymous": true,
+      "is_anonymous_vpn": true,
+      "is_hosting_provider": true,
+      "is_public_proxy": true,
+      "is_residential_proxy": true,
+      "is_tor_exit_node": true,
+      "network_last_seen": "2025-01-15",
+      "provider_name": "TestVPN"
+    },
     "city": {
       "confidence": 42,
       "geoname_id": 2643743,

src/test/resources/test-data/insights-response.json

@@ -15,6 +15,17 @@
         "reason": "Suspicious activity has been seen on this IP address across minFraud customers."
       }
     ],
+    "anonymizer": {
+      "confidence": 99,
+      "is_anonymous": true,
+      "is_anonymous_vpn": true,
+      "is_hosting_provider": true,
+      "is_public_proxy": true,
+      "is_residential_proxy": true,
+      "is_tor_exit_node": true,
+      "network_last_seen": "2025-01-15",
+      "provider_name": "TestVPN"
+    },
     "city": {
       "confidence": 42,
       "geoname_id": 2643743,