diff --git a/service/src/main/java/org/whispersystems/textsecuregcm/WhisperServerService.java b/service/src/main/java/org/whispersystems/textsecuregcm/WhisperServerService.java
index b5132ef74..ddd2876d2 100644
--- a/service/src/main/java/org/whispersystems/textsecuregcm/WhisperServerService.java
+++ b/service/src/main/java/org/whispersystems/textsecuregcm/WhisperServerService.java
@@ -80,7 +80,6 @@ import org.whispersystems.textsecuregcm.badges.ConfiguredProfileBadgeConverter;
 import org.whispersystems.textsecuregcm.badges.ResourceBundleLevelTranslator;
 import org.whispersystems.textsecuregcm.configuration.DirectoryServerConfiguration;
 import org.whispersystems.textsecuregcm.configuration.dynamic.DynamicConfiguration;
-import org.whispersystems.textsecuregcm.controllers.AcceptNumericOnlineFlagRequestFilter;
 import org.whispersystems.textsecuregcm.controllers.AccountController;
 import org.whispersystems.textsecuregcm.controllers.AttachmentControllerV1;
 import org.whispersystems.textsecuregcm.controllers.AttachmentControllerV2;
@@ -591,12 +590,7 @@ public class WhisperServerService extends Application<WhisperServerConfiguration
         .addFilter("RemoteDeprecationFilter", new RemoteDeprecationFilter(dynamicConfigurationManager))
         .addMappingForUrlPatterns(EnumSet.of(DispatcherType.REQUEST), false, "/*");
 
-    // TODO Remove on or after 2022-03-01
-    final AcceptNumericOnlineFlagRequestFilter acceptNumericOnlineFlagRequestFilter =
-        new AcceptNumericOnlineFlagRequestFilter("v1/messages/multi_recipient");
-
     environment.jersey().register(new ContentLengthFilter(TrafficSource.HTTP));
-    environment.jersey().register(acceptNumericOnlineFlagRequestFilter);
     environment.jersey().register(MultiDeviceMessageListProvider.class);
     environment.jersey().register(MultiRecipientMessageProvider.class);
     environment.jersey().register(new MetricsApplicationEventListener(TrafficSource.HTTP));
@@ -619,7 +613,6 @@ public class WhisperServerService extends Application<WhisperServerConfiguration
             clientPresenceManager, retrySchedulingExecutor));
     webSocketEnvironment.jersey().register(new WebsocketRefreshApplicationEventListener(accountsManager, clientPresenceManager));
     webSocketEnvironment.jersey().register(new ContentLengthFilter(TrafficSource.WEBSOCKET));
-    webSocketEnvironment.jersey().register(acceptNumericOnlineFlagRequestFilter);
     webSocketEnvironment.jersey().register(MultiDeviceMessageListProvider.class);
     webSocketEnvironment.jersey().register(MultiRecipientMessageProvider.class);
     webSocketEnvironment.jersey().register(new MetricsApplicationEventListener(TrafficSource.WEBSOCKET));
diff --git a/service/src/main/java/org/whispersystems/textsecuregcm/controllers/AcceptNumericOnlineFlagRequestFilter.java b/service/src/main/java/org/whispersystems/textsecuregcm/controllers/AcceptNumericOnlineFlagRequestFilter.java
deleted file mode 100644
index 12ec73ff8..000000000
--- a/service/src/main/java/org/whispersystems/textsecuregcm/controllers/AcceptNumericOnlineFlagRequestFilter.java
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * Copyright 2013-2021 Signal Messenger, LLC
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-
-package org.whispersystems.textsecuregcm.controllers;
-
-import java.io.IOException;
-import javax.ws.rs.container.ContainerRequestContext;
-import javax.ws.rs.container.ContainerRequestFilter;
-import javax.ws.rs.container.PreMatching;
-
-@PreMatching
-public class AcceptNumericOnlineFlagRequestFilter implements ContainerRequestFilter {
-
-  private final String pathPrefix;
-
-  public AcceptNumericOnlineFlagRequestFilter(final String pathPrefix) {
-    this.pathPrefix = pathPrefix;
-  }
-
-  @Override
-  public void filter(final ContainerRequestContext requestContext) throws IOException {
-    if (requestContext.getUriInfo().getPath().startsWith(pathPrefix)) {
-      if ("1".equals(requestContext.getUriInfo().getQueryParameters().getFirst("online"))) {
-        requestContext.setRequestUri(requestContext.getUriInfo().getRequestUriBuilder()
-            .replaceQueryParam("online", "true")
-            .build());
-      }
-    }
-  }
-}
diff --git a/service/src/test/java/org/whispersystems/textsecuregcm/controllers/AcceptNumericOnlineFlagRequestFilterTest.java b/service/src/test/java/org/whispersystems/textsecuregcm/controllers/AcceptNumericOnlineFlagRequestFilterTest.java
deleted file mode 100644
index 6e89a2780..000000000
--- a/service/src/test/java/org/whispersystems/textsecuregcm/controllers/AcceptNumericOnlineFlagRequestFilterTest.java
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * Copyright 2013-2021 Signal Messenger, LLC
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-
-package org.whispersystems.textsecuregcm.controllers;
-
-import static org.junit.jupiter.api.Assertions.assertEquals;
-
-import io.dropwizard.testing.junit5.DropwizardExtensionsSupport;
-import io.dropwizard.testing.junit5.ResourceExtension;
-import javax.ws.rs.GET;
-import javax.ws.rs.Path;
-import javax.ws.rs.QueryParam;
-import org.glassfish.jersey.test.grizzly.GrizzlyWebTestContainerFactory;
-import org.junit.jupiter.api.extension.ExtendWith;
-import org.junit.jupiter.params.ParameterizedTest;
-import org.junit.jupiter.params.provider.CsvSource;
-
-@ExtendWith(DropwizardExtensionsSupport.class)
-class AcceptNumericOnlineFlagRequestFilterTest {
-
-  @Path("/test")
-  public static class TestResource {
-
-    @Path("/convert-boolean")
-    @GET
-    public boolean convertBoolean(@QueryParam("online") final boolean online) {
-      return online;
-    }
-
-    @Path("/no-conversion")
-    @GET
-    public boolean noConversion(@QueryParam("online") final boolean online) {
-      return online;
-    }
-  }
-
-  private static final ResourceExtension RESOURCE_EXTENSION = ResourceExtension.builder()
-      .addProvider(new AcceptNumericOnlineFlagRequestFilter("test/convert-boolean"))
-      .setTestContainerFactory(new GrizzlyWebTestContainerFactory())
-      .addResource(new TestResource())
-      .build();
-
-  @ParameterizedTest
-  @CsvSource({
-      "/test/convert-boolean, true,  true",
-      "/test/convert-boolean, false, false",
-      "/test/convert-boolean, 1,     true",
-      "/test/convert-boolean, 0,     false",
-      "/test/no-conversion,   true,  true",
-      "/test/no-conversion,   false, false",
-      "/test/no-conversion,   1,     false",
-      "/test/no-conversion,   0,     false"
-  })
-  void filter(final String path, final String value, final boolean expected) {
-    final boolean response =
-        RESOURCE_EXTENSION.getJerseyTest()
-            .target(path)
-            .queryParam("online", value)
-            .request()
-            .get(boolean.class);
-
-    assertEquals(expected, response);
-  }
-}