diff --git a/instrumentation/rabbitmq-2.7/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/rabbitmq/RabbitChannelNetAttributesGetter.java b/instrumentation/rabbitmq-2.7/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/rabbitmq/RabbitChannelNetAttributesGetter.java
index 1fd5da7796b6..e8b95cb61ffb 100644
--- a/instrumentation/rabbitmq-2.7/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/rabbitmq/RabbitChannelNetAttributesGetter.java
+++ b/instrumentation/rabbitmq-2.7/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/rabbitmq/RabbitChannelNetAttributesGetter.java
@@ -20,7 +20,8 @@ public String transport(ChannelAndMethod channelAndMethod, @Nullable Void unused
   @Nullable
   @Override
   public String peerName(ChannelAndMethod channelAndMethod, @Nullable Void unused) {
-    return channelAndMethod.getChannel().getConnection().getAddress().getHostName();
+    // not using InetAddress.getHostName() since that can trigger reverse name lookup
+    return null;
   }
 
   @Nullable
diff --git a/instrumentation/rabbitmq-2.7/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/rabbitmq/RabbitReceiveNetAttributesGetter.java b/instrumentation/rabbitmq-2.7/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/rabbitmq/RabbitReceiveNetAttributesGetter.java
index 09cca9bbab54..d51e752b8a29 100644
--- a/instrumentation/rabbitmq-2.7/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/rabbitmq/RabbitReceiveNetAttributesGetter.java
+++ b/instrumentation/rabbitmq-2.7/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/rabbitmq/RabbitReceiveNetAttributesGetter.java
@@ -21,7 +21,8 @@ public String transport(ReceiveRequest request, @Nullable GetResponse response)
   @Nullable
   @Override
   public String peerName(ReceiveRequest request, @Nullable GetResponse response) {
-    return request.getConnection().getAddress().getHostName();
+    // not using InetAddress.getHostName() since that can trigger reverse name lookup
+    return null;
   }
 
   @Nullable
diff --git a/instrumentation/reactor/reactor-netty/reactor-netty-1.0/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/reactornetty/v1_0/ReactorNettyHttpClientAttributesGetter.java b/instrumentation/reactor/reactor-netty/reactor-netty-1.0/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/reactornetty/v1_0/ReactorNettyHttpClientAttributesGetter.java
index cfb8380f45e9..829f1f17e3ae 100644
--- a/instrumentation/reactor/reactor-netty/reactor-netty-1.0/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/reactornetty/v1_0/ReactorNettyHttpClientAttributesGetter.java
+++ b/instrumentation/reactor/reactor-netty/reactor-netty-1.0/javaagent/src/main/java/io/opentelemetry/javaagent/instrumentation/reactornetty/v1_0/ReactorNettyHttpClientAttributesGetter.java
@@ -37,7 +37,7 @@ public String url(HttpClientConfig request) {
     if (hostAddress instanceof InetSocketAddress) {
       InetSocketAddress inetHostAddress = (InetSocketAddress) hostAddress;
       return (request.isSecure() ? "https://" : "http://")
-          + inetHostAddress.getHostName()
+          + inetHostAddress.getHostString()
           + ":"
           + inetHostAddress.getPort()
           + (uri.startsWith("/") ? "" : "/")