diff --git a/service/src/main/java/org/whispersystems/textsecuregcm/util/Util.java b/service/src/main/java/org/whispersystems/textsecuregcm/util/Util.java
index 95e0bcaa2..c9dcee541 100644
--- a/service/src/main/java/org/whispersystems/textsecuregcm/util/Util.java
+++ b/service/src/main/java/org/whispersystems/textsecuregcm/util/Util.java
@@ -104,14 +104,6 @@ public class Util {
     }
   }
 
-  public static String getNumberPrefix(String number) {
-    String countryCode  = getCountryCode(number);
-    int    remaining    = number.length() - (1 + countryCode.length());
-    int    prefixLength = Math.min(4, remaining);
-
-    return number.substring(0, 1 + countryCode.length() + prefixLength);
-  }
-
   public static byte[] truncate(byte[] element, int length) {
     byte[] result = new byte[length];
     System.arraycopy(element, 0, result, 0, result.length);
diff --git a/service/src/test/java/org/whispersystems/textsecuregcm/util/NumberPrefixTest.java b/service/src/test/java/org/whispersystems/textsecuregcm/util/NumberPrefixTest.java
deleted file mode 100644
index 7ca106d5a..000000000
--- a/service/src/test/java/org/whispersystems/textsecuregcm/util/NumberPrefixTest.java
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- * Copyright 2013 Signal Messenger, LLC
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-
-package org.whispersystems.textsecuregcm.util;
-
-import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
-
-import org.junit.jupiter.api.Test;
-
-class NumberPrefixTest {
-
-  @Test
-  void testPrefixes() {
-    assertThat(Util.getNumberPrefix("+14151234567")).isEqualTo("+14151");
-    assertThat(Util.getNumberPrefix("+22587654321")).isEqualTo("+2258765");
-    assertThat(Util.getNumberPrefix("+298654321")).isEqualTo("+2986543");
-    assertThat(Util.getNumberPrefix("+12")).isEqualTo("+12");
-  }
-
-}