diff --git a/java/io/github/measurement_kit/jni/DnsApi.java b/java/io/github/measurement_kit/jni/DnsApi.java
index 82825e3..e04ef9e 100644
--- a/java/io/github/measurement_kit/jni/DnsApi.java
+++ b/java/io/github/measurement_kit/jni/DnsApi.java
@@ -9,6 +9,11 @@
  */
 public class DnsApi {
 
+    /**
+     * Clear all configured nameservers.
+     */
+    public static native void clearNameServers();
+
     /**
      * Count number of registered nameservers
      * @return Number of registered nameservers
diff --git a/jni/dns_api.cpp b/jni/dns_api.cpp
index 3e9de28..85df520 100644
--- a/jni/dns_api.cpp
+++ b/jni/dns_api.cpp
@@ -9,6 +9,16 @@
 #include "common.hpp"
 #include "io_github_measurement_kit_jni_DnsApi.h"
 
+JNIEXPORT void JNICALL
+Java_io_github_measurement_1kit_jni_DnsApi_clearNameServers
+  (JNIEnv * /*env*/, jclass /*clazz*/) {
+    try {
+        mk::clear_nameservers();
+    } catch (...) {
+        // XXX suppress
+    }
+}
+
 JNIEXPORT jint JNICALL
 Java_io_github_measurement_1kit_jni_DnsApi_countNameServers
   (JNIEnv * /*env*/, jclass /*clazz*/) {